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Author SHA1 Message Date
jtg
fd624c0601 Imported sources 1999-08-19 00:55:39 +00:00
4463 changed files with 138351 additions and 1367449 deletions

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@@ -1,12 +0,0 @@
((nil
(indent-tabs-mode . nil)
(tab-width . 8)
(c-basic-offset . 3)
(c-file-style . "stroustrup")
(fill-column . 78)
(eval . (progn
(c-set-offset 'innamespace '0)
(c-set-offset 'inline-open '0)))
)
(makefile-mode (indent-tabs-mode . t))
)

4
.gitattributes vendored
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@@ -1,4 +0,0 @@
*.dsp -crlf
*.dsw -crlf
*.sln -crlf
*.vcproj -crlf

46
.gitignore vendored
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@@ -1,46 +0,0 @@
*.a
*.dll
*.exe
*.ilk
*.la
*.lo
*.log
*.o
*.obj
*.os
*.pc
*.pdb
*.pyc
*.pyo
*.so
*.so.*
*.sw[a-z]
*.tar
*.tar.bz2
*.tar.gz
*.trs
*.zip
*~
depend
depend.bak
bin/ltmain.sh
lib
lib64
configure
configure.lineno
autom4te.cache
aclocal.m4
config.log
config.status
cscope*
.scon*
config.py
build
libtool
manifest.txt
.dir-locals.el
.deps/
.dirstamp
.libs/
Makefile
Makefile.in

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@@ -1,66 +0,0 @@
# Mesa 3-D graphics library
#
# Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
# Copyright (C) 2010-2011 LunarG Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
# use c99 compiler by default
ifeq ($(LOCAL_CC),)
ifeq ($(LOCAL_IS_HOST_MODULE),true)
LOCAL_CC := $(HOST_CC) -std=c99
else
LOCAL_CC := $(TARGET_CC) -std=c99
endif
endif
LOCAL_C_INCLUDES += \
$(MESA_TOP)/include
MESA_VERSION=$(shell cat $(MESA_TOP)/VERSION)
# define ANDROID_VERSION (e.g., 4.0.x => 0x0400)
LOCAL_CFLAGS += \
-DPACKAGE_VERSION=\"$(MESA_VERSION)\" \
-DPACKAGE_BUGREPORT=\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\" \
-DANDROID_VERSION=0x0$(MESA_ANDROID_MAJOR_VERSION)0$(MESA_ANDROID_MINOR_VERSION)
LOCAL_CFLAGS += \
-DHAVE_PTHREAD=1 \
-fvisibility=hidden \
-Wno-sign-compare
ifeq ($(strip $(MESA_ENABLE_ASM)),true)
ifeq ($(TARGET_ARCH),x86)
LOCAL_CFLAGS += \
-DUSE_X86_ASM \
-DHAVE_DLOPEN \
endif
endif
LOCAL_CPPFLAGS += \
-Wno-error=non-virtual-dtor \
-Wno-non-virtual-dtor
# uncomment to keep the debug symbols
#LOCAL_STRIP_MODULE := false
ifeq ($(strip $(LOCAL_MODULE_TAGS)),)
LOCAL_MODULE_TAGS := optional
endif

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@@ -1,100 +0,0 @@
# Mesa 3-D graphics library
#
# Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
# Copyright (C) 2010-2011 LunarG Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
# BOARD_GPU_DRIVERS should be defined. The valid values are
#
# classic drivers: i915 i965
# gallium drivers: swrast i915g ilo nouveau r300g r600g radeonsi vmwgfx
#
# The main target is libGLES_mesa. For each classic driver enabled, a DRI
# module will also be built. DRI modules will be loaded by libGLES_mesa.
MESA_TOP := $(call my-dir)
MESA_ANDROID_MAJOR_VERSION := $(word 1, $(subst ., , $(PLATFORM_VERSION)))
MESA_ANDROID_MINOR_VERSION := $(word 2, $(subst ., , $(PLATFORM_VERSION)))
MESA_ANDROID_VERSION := $(MESA_ANDROID_MAJOR_VERSION).$(MESA_ANDROID_MINOR_VERSION)
MESA_COMMON_MK := $(MESA_TOP)/Android.common.mk
MESA_PYTHON2 := python
DRM_TOP := external/drm
DRM_GRALLOC_TOP := hardware/drm_gralloc
classic_drivers := i915 i965
gallium_drivers := swrast i915g ilo nouveau r300g r600g radeonsi vmwgfx
MESA_GPU_DRIVERS := $(strip $(BOARD_GPU_DRIVERS))
# warn about invalid drivers
invalid_drivers := $(filter-out \
$(classic_drivers) $(gallium_drivers), $(MESA_GPU_DRIVERS))
ifneq ($(invalid_drivers),)
$(warning invalid GPU drivers: $(invalid_drivers))
# tidy up
MESA_GPU_DRIVERS := $(filter-out $(invalid_drivers), $(MESA_GPU_DRIVERS))
endif
# host and target must be the same arch to generate matypes.h
ifeq ($(TARGET_ARCH),$(HOST_ARCH))
MESA_ENABLE_ASM := true
else
MESA_ENABLE_ASM := false
endif
ifneq ($(filter $(classic_drivers), $(MESA_GPU_DRIVERS)),)
MESA_BUILD_CLASSIC := true
else
MESA_BUILD_CLASSIC := false
endif
ifneq ($(filter $(gallium_drivers), $(MESA_GPU_DRIVERS)),)
MESA_BUILD_GALLIUM := true
else
MESA_BUILD_GALLIUM := false
endif
# add subdirectories
ifneq ($(strip $(MESA_GPU_DRIVERS)),)
SUBDIRS := \
src/loader \
src/mapi \
src/glsl \
src/mesa \
src/egl/main
ifeq ($(strip $(MESA_BUILD_CLASSIC)),true)
SUBDIRS += \
src/egl/drivers/dri2 \
src/mesa/drivers/dri
endif
ifeq ($(strip $(MESA_BUILD_GALLIUM)),true)
SUBDIRS += src/gallium
endif
mkfiles := $(patsubst %,$(MESA_TOP)/%/Android.mk,$(SUBDIRS))
include $(mkfiles)
endif

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Make-config Normal file

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Makefile.X11 Normal file
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@@ -0,0 +1,521 @@
# $Id: Makefile.X11,v 1.1.1.1 1999/08/19 00:55:39 jtg Exp $
# Mesa 3-D graphics library
# Version: 3.1
#
# Copyright (C) 1999 Brian Paul All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# Top-level makefile for Mesa
# To add a new configuration for your system add it to the list below
# then update the Make-config file.
SHELL = /bin/sh
default:
@echo "Type one of the following:"
@echo " make aix for IBM RS/6000 with AIX"
@echo " make aix-sl for IBM RS/6000, make shared libs"
@echo " make amiwin for Amiga with SAS/C and AmiWin"
@echo " make amix for Amiga 3000 UX SVR4 v2.1 systems"
@echo " make beos-r4 for BeOS R4"
@echo " make bsdos for BSD/OS from BSDI using GCC"
@echo " make bsdos4 for BSD/OS 4.x, dynamic libraries"
@echo " make cygnus for Win95/NT using Cygnus-Win32"
@echo " make cygnus-linux for Win95/NT using Cygnus-Win32 under Linux"
@echo " make dgux for Data General"
@echo " make freebsd for FreeBSD systems with GCC"
@echo " make freebsd-386 for FreeBSD systems with GCC, w/ Intel assembly"
@echo " make gcc for a generic system with GCC"
@echo " make hpux9 for HP systems with HPUX 9.x"
@echo " make hpux9-sl for HP systems with HPUX 9.x, make shared libs"
@echo " make hpux9-gcc for HP systems with HPUX 9.x using GCC"
@echo " make hpux9-gcc-sl for HP systems with HPUX 9.x, GCC, make shared libs"
@echo " make hpux10 for HP systems with HPUX 10.x"
@echo " make hpux10-sl for HP systems with HPUX 10.x, shared libs"
@echo " make hpux10-gcc for HP systems with HPUX 10.x w/ GCC"
@echo " make hpux10-gcc-sl for HP systems with HPUX 10.x w/ GCC, shared libs"
@echo " make irix4 for SGI systems with IRIX 4.x"
@echo " make irix5 for SGI systems with IRIX 5.x"
@echo " make irix5-gcc for SGI systems with IRIX 5.x using GCC"
@echo " make irix5-dso for SGI systems with IRIX 5.x, make DSOs"
@echo " make irix6-o32 for SGI systems with IRIX 6.x, make o32-bit libs"
@echo " make irix6-o32-dso for SGI systems with IRIX 6.x, make o32-bit DSOs"
@echo " make irix6-n32 for SGI systems with IRIX 6.x, make n32-bit libs"
@echo " make irix6-n32-dso for SGI systems with IRIX 6.x, make n32-bit DSOs"
@echo " make irix6-gcc-n32-sl for SGI systems with IRIX 6.x, GCC, make n32 DSOs"
@echo " make irix6-64 for SGI systems with IRIX 6.x, make 64-bit libs"
@echo " make irix6-64-dso for SGI systems with IRIX 6.x, make 64-bit DSOs"
@echo " make linux for Linux systems, make static .a libs"
@echo " make linux-elf for Linux systems, make ELF shared libs"
@echo " make linux-386 for Linux w/ Intel assembly"
@echo " make linux-386-elf for Linux w/ Intel assembly, make ELF shared libs"
@echo " make linux-ggi for Linux systems with libggi"
@echo " make linux-386-ggi for Linux systems with libggi w/ Intel assembly"
@echo " make linux-alpha for Linux on Alpha systems"
@echo " make linux-alpha-elf for Linux on Alpha systems, make ELF shared libs"
@echo " make linux-ppc for Linux on PowerPC systems"
@echo " make linux-ppc-so for Linux on PowerPC systems, make shared libs"
@echo " make linux-glide for Linux w/ 3Dfx Glide driver"
@echo " make linux-386-glide for Linux w/ 3Dfx Glide driver, Intel assembly"
@echo " make linux-386-opt-glide for Linux with 3Dfx Voodoo1 for GLQuake"
@echo " make linux-386-opt-V2-glide for Linux with 3Dfx Voodoo2 for GLQuake"
@echo " make linux-3dnow for Linux on AMD w/ 3DNow!"
@echo " make linux-3dnow-glide for Linux on AMD w/ 3DNow! for Glide"
@echo " make linux-386-pthread for Linux w/ Intel assembly and linuxthreads"
@echo " make linux-386-pthread-shared for Linux w/ Intel assembly and linuxthreads"
@echo " make linux-sparc for Linux on Sparc systems"
@echo " make linux-sparc5-elf for Sparc5 systems, make ELF shared libs"
@echo " make linux-sparc-ultra for UltraSparc systems, make ELF shared libs"
@echo " make lynxos for LynxOS systems with GCC"
@echo " make macintosh for Macintosh"
@echo " make machten-2.2 for Macs w/ MachTen 2.2 (68k w/ FPU)"
@echo " make machten-4.0 for Macs w/ MachTen 4.0.1 or newer with GNU make"
@echo " make mklinux for Linux on Power Macintosh"
@echo " make netbsd for NetBSD 1.0 systems with GCC"
@echo " make next for NeXT systems with NEXTSTEP 3.3"
@echo " make openbsd for OpenBSD systems"
@echo " make openstep for OpenStep/MacOSX Server systems"
@echo " make os2-x11 for OS/2 with XFree86"
@echo " make osf1 for DEC Alpha systems with OSF/1"
@echo " make osf1-sl for DEC Alpha systems with OSF/1, make shared libs"
@echo " make pgi-cygnus for Cygnus with Portland Group, Inc. compiler"
@echo " make pgi-mingw32 for mingW32 with Portland Group, Inc. compiler"
@echo " make qnx for QNX V4 systems with Watcom compiler"
@echo " make sco for SCO Unix systems with ODT"
@echo " make solaris-x86 for PCs with Solaris"
@echo " make solaris-x86-gcc for PCs with Solaris using GCC"
@echo " make sunos4 for Suns with SunOS 4.x"
@echo " make sunos4-sl for Suns with SunOS 4.x, make shared libs"
@echo " make sunos4-gcc for Suns with SunOS 4.x and GCC"
@echo " make sunos4-gcc-sl for Suns with SunOS 4.x, GCC, make shared libs"
@echo " make sunos5 for Suns with SunOS 5.x"
@echo " make sunos5-sl for Suns with SunOS 5.x, make shared libs"
@echo " make sunos5-ultra for Sun UltraSPARCs with SunOS 5.x"
@echo " make sunos5-ultra-sl for Sun UltraSPARCs with SunOS 5.x, make shared libs"
@echo " make sunos5-thread for Suns with SunOS 5.x, using Solaris threads"
@echo " make sunos5-pthread for Suns with SunOS 5.[56] using POSIX threads"
@echo " make sunos5-gcc-thread for Suns with SunOS 5.x and GCC, using Solaris threads"
@echo " make sunos5-gcc-pthread for Suns with SunOS 5.[56] and GCC, using POSIX threads"
@echo " make sunos5-gcc for Suns with SunOS 5.x and GCC"
@echo " make sunos5-gcc-sl for Suns with SunOS 5.x, GCC, make shared libs"
@echo " make sunos5-x11r6-gcc-sl for Suns with X11R6, GCC, make shared libs"
@echo " make sunos5-gcc-thread for Suns with SunOS 5.x and GCC, using Solaris threads"
@echo " make sunos5-gcc-pthread for Suns with SunOS 5.[56] and GCC, using POSIX threads"
@echo " make sunSolaris-CC for Solaris using C++ compiler"
@echo " make ultrix-gcc for DEC systems with Ultrix and GCC"
@echo " make unicos for Cray C90 (and other?) systems"
@echo " make unixware for PCs running UnixWare"
@echo " make unixware-shared for PCs running UnixWare, shared libs"
@echo " make uwin for Windows NT with AT&T/Wipro UWIN"
@echo " make vistra for Stardent Vistra systems"
@echo " make clean remove .o files"
@echo " make realclean remove .o, library and executable files"
aix aix-sl amix bsdos bsdos4 dgux freebsd freebsd-386 gcc \
hpux9 hpux9-sl hpux9-gcc hpux9-gcc-sl \
hpux10 hpux10-sl hpux10-gcc hpux10-gcc-sl \
irix-debug irix4 irix5 irix5-gcc irix5-dso irix6-o32 irix6-o32-dso \
linux linux-debug linux-prof linux-elf linux-elf-debug \
linux-glide linux-386-glide linux-386-opt-glide \
linux-386-opt-V2-glide \
linux-386 linux-386-elf \
linux-3dnow linux-3dnow-glide \
linux-alpha linux-alpha-elf \
linux-ppc linux-ppc-so \
linux-386-pthread linux-386-pthread-shared \
linux-sparc \
linux-sparc5-elf \
linux-sparc-ultra \
lynxos machten-2.2 machten-4.0 \
mklinux netbsd osf1 osf1-sl openbsd qnx sco \
solaris-x86 solaris-x86-gcc sunSolaris-CC \
sunos4 sunos4-sl sunos4-gcc sunos4-gcc-sl sunos4-gcc-x11r6-sl \
sunos5 sunos5-sl sunos5-ultra sunos5-ultra-sl sunos5-gcc sunos5-gcc-sl \
sunos5-thread sunos5-pthread sunos5-gcc-thread sunos5-gcc-pthread \
sunos5-x11r6-gcc-sl ultrix-gcc unicos unixware uwin vistra:
-mkdir lib
touch src/depend
touch src-glu/depend
if [ -d src-glut ] ; then touch src-glut/depend ; fi
cd src ; $(MAKE) -f Makefile.X11 $@
cd src-glu ; $(MAKE) -f Makefile.X11 $@
if [ -d src-glut ] ; then cd src-glut ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d demos ] ; then cd demos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d xdemos ] ; then cd xdemos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d samples ] ; then cd samples ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d book ] ; then cd book ; $(MAKE) -f Makefile.X11 $@ ; fi
irix6-n32 irix6-n32-dso irix6-gcc-n32-sl:
-mkdir lib32
touch src/depend
touch src-glu/depend
if [ -d src-glut ] ; then touch src-glut/depend ; fi
cd src ; $(MAKE) -f Makefile.X11 $@
cd src-glu ; $(MAKE) -f Makefile.X11 $@
if [ -d src-glut ] ; then cd src-glut ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d demos ] ; then cd demos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d xdemos ] ; then cd xdemos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d samples ] ; then cd samples ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d book ] ; then cd book ; $(MAKE) -f Makefile.X11 $@ ; fi
irix6-64 irix6-64-dso:
-mkdir lib64
touch src/depend
touch src-glu/depend
if [ -d src-glut ] ; then touch src-glut/depend ; fi
cd src ; $(MAKE) -f Makefile.X11 $@
cd src-glu ; $(MAKE) -f Makefile.X11 $@
if [ -d src-glut ] ; then cd src-glut ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d demos ] ; then cd demos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d xdemos ] ; then cd xdemos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d samples ] ; then cd samples ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d book ] ; then cd book ; $(MAKE) -f Makefile.X11 $@ ; fi
amiwin:
bin/mklib.amiwin
beos-r4:
-mkdir lib
-rm src/depend
touch src/depend
-rm src-glu/depend
touch src-glu/depend
cd src ; $(MAKE) -f Makefile.BeOS-R4 $@
cd src-glu ; $(MAKE) -f Makefile.BeOS-R4 $@
if [ -d BeOS ] ; then cd BeOS ; $(MAKE) ; fi
if [ -d src-glut.beos ] ; then cd src-glut.beos ; $(MAKE) ; fi
if [ -d src-glut.beos ] ; then cp src-glut.beos/obj*/libglut.so lib ; fi
if [ -d demos ] ; then cd demos ; $(MAKE) -f Makefile.BeOS-R4 $@ ; fi
if [ -d samples ] ; then cd samples ; $(MAKE) -f Makefile.BeOS-R4 $@ ; fi
if [ -d book ] ; then cd book ; $(MAKE) -f Makefile.BeOS-R4 $@ ; fi
pgi-cygnus pgi-mingw32 \
cygnus cygnus-linux:
-mkdir lib
touch src/depend
touch src-glu/depend
cd src ; $(MAKE) -f Makefile.X11 $@
cd src-glu ; $(MAKE) -f Makefile.X11 $@
cd src-glut ; $(MAKE) -f Makefile.X11 $@
cd demos ; $(MAKE) -f Makefile.X11 $@
if [ -d xdemos ] ; then cd xdemos ; $(MAKE) -f Makefile.X11 $@ ; fi
macintosh:
@echo "See the README file for Macintosh intallation information"
next:
-mkdir lib
cd src ; $(MAKE) -f Makefile.X11 "MYCC=${CC}" $@
cd src-glu ; $(MAKE) -f Makefile.X11 "MYCC=${CC}" $@
openstep:
-mkdir lib
cd src ; $(MAKE) -f Makefile.X11 "MYCC=${CC}" $@
cd src-glu ; $(MAKE) -f Makefile.X11 "MYCC=${CC}" $@
os2-x11:
if not EXIST .\lib md lib
touch src/depend
touch src-glu/depend
if exist src-glut touch src-glut/depend
cd src & make -f Makefile.X11 $@
cd src-glu & make -f Makefile.X11 $@
if exist src-glut cd src-glut & make -f Makefile.X11 $@
if exist demos cd demos & make -f Makefile.X11 $@
if exist xdemos cd xdemos & make -f Makefile.X11 $@
if exist samples cd samples & make -f Makefile.X11 $@
if exist book cd book & make -f Makefile.X11 $@
linux-ggi linux-386-ggi:
-mkdir lib
touch src/depend
touch src-glu/depend
if [ -d src-glut ] ; then touch src-glut/depend ; fi
if [ -d ggi ] ; then touch ggi/depend ; fi
cd src ; $(MAKE) -f Makefile.X11 $@
cd src/GGI/default ; $(MAKE)
cd src/GGI/display ; $(MAKE)
cd src-glu ; $(MAKE) -f Makefile.X11 $@
# if [ -d src-glut ] ; then cd src-glut ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d ggi ] ; then cd ggi ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d ggi ] ; then cd ggi/demos; $(MAKE) ; fi
if [ -d demos ] ; then cd demos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d xdemos ] ; then cd xdemos ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d samples ] ; then cd samples ; $(MAKE) -f Makefile.X11 $@ ; fi
if [ -d book ] ; then cd book ; $(MAKE) -f Makefile.X11 $@ ; fi
# if you change GGI_DEST please change it in ggimesa.conf, too.
DESTDIR=/usr/local
GGI_DEST=lib/ggi/mesa
linux-ggi-install linux-386-ggi-install:
install -d $(DESTDIR)/$(GGI_DEST)/default $(DESTDIR)/$(GGI_DEST)/display $(DESTDIR)/etc/ggi
install -m 0755 src/GGI/default/*.so $(DESTDIR)/$(GGI_DEST)/default
install -m 0755 src/GGI/display/*.so $(DESTDIR)/$(GGI_DEST)/display
install -m 0644 src/GGI/ggimesa.conf $(DESTDIR)/etc/ggi
# if [ -z "`grep ggimesa $(DESTDIR)/etc/ggi/libggi.conf`" ]; then \
# echo ".include $(DESTDIR)/etc/ggi/ggimesa.conf" >> $(DESTDIR)/etc/ggi/libggi.conf ; \
# fi
# Remove .o files, emacs backup files, etc.
clean:
-rm -f ggi/*~ *.o
-rm -f src/GGI/default/*~ *.so
-rm -f src/GGI/display/*~ *.so
-rm -f include/*~
-rm -f include/GL/*~
-rm -f src/*.o src/*~ src/*.a src/*/*.o src/*/*~
-rm -f src-glu/*.o src-glu/*~ src-glu/*.a
-rm -f src-glut/*.o
-rm -f demos/*.o
-rm -f book/*.o book/*~
-rm -f xdemos/*.o xdemos/*~
-rm -f samples/*.o samples/*~
-rm -f ggi/*.o ggi/demos/*.o ggi/*.a
# Remove everything that can be remade
realclean: clean
-rm -f lib/*
cd demos && $(MAKE) -f Makefile.X11 realclean || true
cd xdemos && $(MAKE) -f Makefile.X11 realclean || true
cd book && $(MAKE) -f Makefile.X11 realclean || true
cd samples && $(MAKE) -f Makefile.X11 realclean || true
cd ggi/demos && ($MAKE) -f Makefile.X11 realclean || true
cd src/GGI/default && $(MAKE) -f Makefile.X11 realclean || true
DIRECTORY = Mesa-3.1
LIB_NAME = MesaLib-3.1beta2
DEMO_NAME = MesaDemos-3.1beta2
LIB_FILES = \
$(DIRECTORY)/Makefile* \
$(DIRECTORY)/Make-config \
$(DIRECTORY)/acconfig.h \
$(DIRECTORY)/acinclude.m4 \
$(DIRECTORY)/aclocal.m4 \
$(DIRECTORY)/conf.h.in \
$(DIRECTORY)/config.guess \
$(DIRECTORY)/config.sub \
$(DIRECTORY)/configure \
$(DIRECTORY)/configure.in \
$(DIRECTORY)/install-sh \
$(DIRECTORY)/ltconfig \
$(DIRECTORY)/ltmain.sh \
$(DIRECTORY)/missing \
$(DIRECTORY)/mkinstalldirs \
$(DIRECTORY)/stamp-h.in \
$(DIRECTORY)/INSTALL \
$(DIRECTORY)/INSTALL.GNU \
$(DIRECTORY)/configure \
$(DIRECTORY)/docs/CONFIG \
$(DIRECTORY)/docs/CONFORM \
$(DIRECTORY)/docs/COPYRIGHT \
$(DIRECTORY)/docs/IAFA-PACKAGE \
$(DIRECTORY)/docs/LICENSE \
$(DIRECTORY)/docs/README \
$(DIRECTORY)/docs/README.* \
$(DIRECTORY)/docs/RELNOTES \
$(DIRECTORY)/docs/VERSIONS \
$(DIRECTORY)/bin/mklib* \
$(DIRECTORY)/*.BAT \
$(DIRECTORY)/*.bat \
$(DIRECTORY)/descrip.mms \
$(DIRECTORY)/mms-config \
$(DIRECTORY)/xlib.opt \
$(DIRECTORY)/STARTUP.MK \
$(DIRECTORY)/mesawin32.mak \
$(DIRECTORY)/Names.win \
$(DIRECTORY)/win32-openstep.sh \
$(DIRECTORY)/*.dja \
$(DIRECTORY)/include/GL/dosmesa.h \
$(DIRECTORY)/include/GL/foomesa.h \
$(DIRECTORY)/include/GL/fxmesa.h \
$(DIRECTORY)/include/GL/ggimesa.h \
$(DIRECTORY)/include/GL/gl.h \
$(DIRECTORY)/include/GL/gl_mangle.h \
$(DIRECTORY)/include/GL/glu.h \
$(DIRECTORY)/include/GL/glu_mangle.h \
$(DIRECTORY)/include/GL/glx.h \
$(DIRECTORY)/include/GL/glx_mangle.h \
$(DIRECTORY)/include/GL/mglmesa.h \
$(DIRECTORY)/include/GL/osmesa.h \
$(DIRECTORY)/include/GL/svgamesa.h \
$(DIRECTORY)/include/GL/wmesa.h \
$(DIRECTORY)/include/GL/xmesa.h \
$(DIRECTORY)/include/GL/xmesa_x.h \
$(DIRECTORY)/include/GL/xmesa_xf86.h \
$(DIRECTORY)/include/GLView.h \
$(DIRECTORY)/src/Makefile* \
$(DIRECTORY)/src/descrip.mms \
$(DIRECTORY)/src/mms_depend \
$(DIRECTORY)/src/*.def \
$(DIRECTORY)/src/depend \
$(DIRECTORY)/src/*.[chS] \
$(DIRECTORY)/src/Allegro/*.[ch] \
$(DIRECTORY)/src/BeOS/*.cpp \
$(DIRECTORY)/src/D3D/*.cpp \
$(DIRECTORY)/src/D3D/*.CPP \
$(DIRECTORY)/src/D3D/*.h \
$(DIRECTORY)/src/D3D/*.H \
$(DIRECTORY)/src/D3D/*.c \
$(DIRECTORY)/src/D3D/*.C \
$(DIRECTORY)/src/D3D/MAKEFILE \
$(DIRECTORY)/src/D3D/*bat \
$(DIRECTORY)/src/D3D/*DEF \
$(DIRECTORY)/src/DOS/DEPEND.DOS \
$(DIRECTORY)/src/DOS/*.c \
$(DIRECTORY)/src/FX/*.[ch] \
$(DIRECTORY)/src/FX/*.def \
$(DIRECTORY)/src/GGI/*.[ch] \
$(DIRECTORY)/src/GGI/ggimesa.conf \
$(DIRECTORY)/src/GGI/default/*.c \
$(DIRECTORY)/src/GGI/default/Makefile \
$(DIRECTORY)/src/GGI/display/*.c \
$(DIRECTORY)/src/GGI/display/Makefile \
$(DIRECTORY)/src/KNOWN_BUGS \
$(DIRECTORY)/src/MGL/*.[ch] \
$(DIRECTORY)/src/MGL/*.txt \
$(DIRECTORY)/src/OSmesa/*.[ch] \
$(DIRECTORY)/src/S3/*.[ch] \
$(DIRECTORY)/src/S3/*.def \
$(DIRECTORY)/src/S3/*.mak \
$(DIRECTORY)/src/S3/*.rc \
$(DIRECTORY)/src/SVGA/*.[ch] \
$(DIRECTORY)/src/Windows/*.[ch] \
$(DIRECTORY)/src/Windows/*.def \
$(DIRECTORY)/src/X/*.[ch] \
$(DIRECTORY)/src/X86/*.[ch] \
$(DIRECTORY)/src/X86/Makefile \
$(DIRECTORY)/src/X86/*.m4 \
$(DIRECTORY)/src/X86/*.S \
$(DIRECTORY)/src/*.dja \
$(DIRECTORY)/src-glu/README[12] \
$(DIRECTORY)/src-glu/Makefile* \
$(DIRECTORY)/src-glu/descrip.mms \
$(DIRECTORY)/src-glu/mms_depend \
$(DIRECTORY)/src-glu/*.def \
$(DIRECTORY)/src-glu/*.dja \
$(DIRECTORY)/src-glu/depend \
$(DIRECTORY)/src-glu/*.[ch] \
$(DIRECTORY)/widgets-mesa \
$(DIRECTORY)/widgets-sgi \
$(DIRECTORY)/util/README \
$(DIRECTORY)/util/*.[ch] \
$(DIRECTORY)/util/sampleMakefile \
$(DIRECTORY)/BeOS/Makefile \
$(DIRECTORY)/BeOS/*.cpp
# old stuff
# $(DIRECTORY)/Win32 \
# $(DIRECTORY)/win32
# $(DIRECTORY)/OpenStep \
#
#
DEMO_FILES = \
$(DIRECTORY)/include/GL/glut.h \
$(DIRECTORY)/include/GL/glutf90.h \
$(DIRECTORY)/include/GL/glut_h.dja \
$(DIRECTORY)/src-glut/Makefile* \
$(DIRECTORY)/src-glut/depend \
$(DIRECTORY)/src-glut/*def \
$(DIRECTORY)/src-glut/descrip.mms \
$(DIRECTORY)/src-glut/mms_depend \
$(DIRECTORY)/src-glut/*.[ch] \
$(DIRECTORY)/src-glut.dja/* \
$(DIRECTORY)/src-glut.beos/Makefile \
$(DIRECTORY)/src-glut.beos/*.cpp \
$(DIRECTORY)/src-glut.beos/*.h \
$(DIRECTORY)/images/* \
$(DIRECTORY)/demos/Makefile* \
$(DIRECTORY)/demos/descrip.mms \
$(DIRECTORY)/demos/*.[ch] \
$(DIRECTORY)/demos/*.dat \
$(DIRECTORY)/xdemos/Makefile* \
$(DIRECTORY)/xdemos/descrip.mms \
$(DIRECTORY)/xdemos/*.[cf] \
$(DIRECTORY)/book/Makefile* \
$(DIRECTORY)/book/README \
$(DIRECTORY)/book/*.[ch] \
$(DIRECTORY)/samples/Makefile* \
$(DIRECTORY)/samples/README \
$(DIRECTORY)/samples/*.c \
$(DIRECTORY)/samples/*.dja \
$(DIRECTORY)/3Dfx \
$(DIRECTORY)/mtdemos \
$(DIRECTORY)/ggi
lib_tar:
cd .. ; \
tar -cvf $(LIB_NAME).tar $(LIB_FILES) ; \
gzip $(LIB_NAME).tar ; \
mv $(LIB_NAME).tar.gz $(DIRECTORY)
demo_tar:
cd .. ; \
tar -cvf $(DEMO_NAME).tar $(DEMO_FILES) ; \
gzip $(DEMO_NAME).tar ; \
mv $(DEMO_NAME).tar.gz $(DIRECTORY)
lib_zip:
-rm $(LIB_NAME).zip
cd .. ; \
zip -r $(LIB_NAME).zip $(LIB_FILES) ; \
mv $(LIB_NAME).zip $(DIRECTORY)
demo_zip:
-rm $(DEMO_NAME).zip
cd .. ; \
zip -r $(DEMO_NAME).zip $(DEMO_FILES) ; \
mv $(DEMO_NAME).zip $(DIRECTORY)
SRC_FILES = \
RELNOTES \
src/Makefile* \
src/depend \
src/*.[chS] \
src/*/*.[ch] \
include/GL/*.h
srctar:
tar -cvf src.tar $(SRC_FILES) ; \
gzip src.tar
srctar.zip:
-rm src.zip
zip -r src.zip $(SRC_FILES) ; \

View File

@@ -1,106 +0,0 @@
# Copyright © 2012 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
SUBDIRS = src
ACLOCAL_AMFLAGS = -I m4
doxygen:
cd doxygen && $(MAKE)
.PHONY: doxygen
# Rules for making release tarballs
PACKAGE_DIR = Mesa-$(PACKAGE_VERSION)
PACKAGE_NAME = MesaLib-$(PACKAGE_VERSION)
EXTRA_FILES = \
aclocal.m4 \
configure \
bin/ar-lib \
bin/compile \
bin/config.sub \
bin/config.guess \
bin/depcomp \
bin/install-sh \
bin/ltmain.sh \
bin/missing \
bin/ylwrap \
bin/test-driver \
src/glsl/glsl_parser.cpp \
src/glsl/glsl_parser.h \
src/glsl/glsl_lexer.cpp \
src/glsl/glcpp/glcpp-lex.c \
src/glsl/glcpp/glcpp-parse.c \
src/glsl/glcpp/glcpp-parse.h \
src/mesa/program/lex.yy.c \
src/mesa/program/program_parse.tab.c \
src/mesa/program/program_parse.tab.h \
`git ls-files | grep "Makefile.am" | sed -e "s/Makefile.am/Makefile.in/"`
IGNORE_FILES = \
-x autogen.sh
parsers: configure
$(MAKE) -C src/glsl glsl_parser.cpp glsl_parser.h glsl_lexer.cpp glcpp/glcpp-lex.c glcpp/glcpp-parse.c glcpp/glcpp-parse.h
$(MAKE) -C src/mesa program/lex.yy.c program/program_parse.tab.c program/program_parse.tab.h
# Everything for new a Mesa release:
ARCHIVES = $(PACKAGE_NAME).tar.gz \
$(PACKAGE_NAME).tar.bz2 \
$(PACKAGE_NAME).zip
tarballs: md5
rm -f ../$(PACKAGE_DIR) $(PACKAGE_NAME).tar
manifest.txt: .git
( \
ls -1 $(EXTRA_FILES) ; \
git ls-files $(IGNORE_FILES) \
) | sed -e '/^\(.*\/\)\?\./d' -e "s@^@$(PACKAGE_DIR)/@" > $@
../$(PACKAGE_DIR):
ln -s $(PWD) $@
$(PACKAGE_NAME).tar: parsers ../$(PACKAGE_DIR) manifest.txt
cd .. ; tar -cf $(PACKAGE_DIR)/$(PACKAGE_NAME).tar -T $(PACKAGE_DIR)/manifest.txt
$(PACKAGE_NAME).tar.gz: $(PACKAGE_NAME).tar ../$(PACKAGE_DIR)
gzip --stdout --best $(PACKAGE_NAME).tar > $(PACKAGE_NAME).tar.gz
$(PACKAGE_NAME).tar.bz2: $(PACKAGE_NAME).tar
bzip2 --stdout --best $(PACKAGE_NAME).tar > $(PACKAGE_NAME).tar.bz2
$(PACKAGE_NAME).zip: parsers ../$(PACKAGE_DIR) manifest.txt
rm -f $(PACKAGE_NAME).zip ; \
cd .. ; \
zip -q -@ $(PACKAGE_NAME).zip < $(PACKAGE_DIR)/manifest.txt ; \
mv $(PACKAGE_NAME).zip $(PACKAGE_DIR)
md5: $(ARCHIVES)
@-md5sum $(PACKAGE_NAME).tar.gz
@-md5sum $(PACKAGE_NAME).tar.bz2
@-md5sum $(PACKAGE_NAME).zip
.PHONY: tarballs md5

View File

@@ -1,168 +0,0 @@
#######################################################################
# Top-level SConstruct
#
# For example, invoke scons as
#
# scons build=debug llvm=yes machine=x86
#
# to set configuration variables. Or you can write those options to a file
# named config.py:
#
# # config.py
# build='debug'
# llvm=True
# machine='x86'
#
# Invoke
#
# scons -h
#
# to get the full list of options. See scons manpage for more info.
#
import os
import os.path
import sys
import SCons.Util
import common
#######################################################################
# Configuration options
opts = Variables('config.py')
common.AddOptions(opts)
env = Environment(
options = opts,
tools = ['gallium'],
toolpath = ['#scons'],
ENV = os.environ,
)
# XXX: This creates a many problems as it saves...
#opts.Save('config.py', env)
# Backwards compatability with old target configuration variable
try:
targets = ARGUMENTS['targets']
except KeyError:
pass
else:
targets = targets.split(',')
print 'scons: warning: targets option is deprecated; pass the targets on their own such as'
print
print ' scons %s' % ' '.join(targets)
print
COMMAND_LINE_TARGETS.append(targets)
Help(opts.GenerateHelpText(env))
# fail early for a common error on windows
if env['gles']:
try:
import libxml2
except ImportError:
raise SCons.Errors.UserError, "GLES requires libxml2-python to build"
#######################################################################
# Environment setup
with open("VERSION") as f:
mesa_version = f.read().strip()
env.Append(CPPDEFINES = [
('PACKAGE_VERSION', '\\"%s\\"' % mesa_version),
('PACKAGE_BUGREPORT', '\\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\\"'),
])
# Includes
env.Prepend(CPPPATH = [
'#/include',
])
env.Append(CPPPATH = [
'#/src/gallium/include',
'#/src/gallium/auxiliary',
'#/src/gallium/drivers',
'#/src/gallium/winsys',
])
if env['msvc']:
env.Append(CPPPATH = ['#include/c99'])
# for debugging
#print env.Dump()
#######################################################################
# Invoke host SConscripts
#
# For things that are meant to be run on the native host build machine, instead
# of the target machine.
#
# Create host environent
if env['crosscompile'] and not env['embedded']:
host_env = Environment(
options = opts,
# no tool used
tools = [],
toolpath = ['#scons'],
ENV = os.environ,
)
# Override options
host_env['platform'] = common.host_platform
host_env['machine'] = common.host_machine
host_env['toolchain'] = 'default'
host_env['llvm'] = False
host_env.Tool('gallium')
host_env['hostonly'] = True
assert host_env['crosscompile'] == False
if host_env['msvc']:
host_env.Append(CPPPATH = ['#include/c99'])
target_env = env
env = host_env
Export('env')
SConscript(
'src/SConscript',
variant_dir = host_env['build_dir'],
duplicate = 0, # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
)
env = target_env
Export('env')
#######################################################################
# Invoke SConscripts
# TODO: Build several variants at the same time?
# http://www.scons.org/wiki/SimultaneousVariantBuilds
SConscript(
'src/SConscript',
variant_dir = env['build_dir'],
duplicate = 0 # http://www.scons.org/doc/0.97/HTML/scons-user/x2261.html
)
########################################################################
# List all aliases
try:
from SCons.Node.Alias import default_ans
except ImportError:
pass
else:
aliases = default_ans.keys()
aliases.sort()
env.Help('\n')
env.Help('Recognized targets:\n')
for alias in aliases:
env.Help(' %s\n' % alias)

View File

@@ -1 +0,0 @@
10.1.5

View File

@@ -1,14 +0,0 @@
#! /bin/sh
srcdir=`dirname "$0"`
test -z "$srcdir" && srcdir=.
ORIGDIR=`pwd`
cd "$srcdir"
autoreconf -v --install || exit 1
cd $ORIGDIR || exit $?
if test -z "$NOCONFIGURE"; then
"$srcdir"/configure "$@"
fi

View File

@@ -1,25 +0,0 @@
# This patch does not apply cleanly, author says it can be skipped.
dff3eccd158d648482bb47118ef5d57a9186e5a4
# And this one depends on the above, author says it too can be skipped.
ac35ded4733883037316d556af596524e5e02535
# This patch introduces some regressions. See:
# https://bugs.freedesktop.org/show_bug.cgi?id=77443
1afe3359258a9e89b62c8638761f52d78f6d1cbc
# Author retracted this from consideration for stable branch
3e817e7e56806d8adb8f16c35136045c29908944
# And this one was simply a bug fix for the previously-retracted commit
2bab95973d8ad3a84f62670143d6f26c230d9582
# Here we have a commit, and its subsequent "revert" both proposed within a
# single window of the stable release. So we can achieve the same final effect
# by ignoring both of the commits.
e3cc0d90e14e62a0a787b6c07a6df0f5c84039be
0d5ec2c615784929be095951f9269773a790a2dd
# The function being modified here (_eglCreateWindowSurfaceCommon) does not
# exist in the 10.1 branch.
91ff0d4c6510dc38f279c586ced17fba917873e7

9
bin/.gitignore vendored
View File

@@ -1,9 +0,0 @@
config.guess
config.sub
install-sh
/depcomp
/missing
ylwrap
compile
ar-lib
/test-driver

View File

@@ -1,52 +0,0 @@
#!/bin/bash
# This script is used to generate the list of fixed bugs that
# appears in the release notes files, with HTML formatting.
#
# Note: This script could take a while until all details have
# been fetched from bugzilla.
#
# Usage examples:
#
# $ bin/bugzilla_mesa.sh mesa-9.0.2..mesa-9.0.3
# $ bin/bugzilla_mesa.sh mesa-9.0.2..mesa-9.0.3 > bugfixes
# $ bin/bugzilla_mesa.sh mesa-9.0.2..mesa-9.0.3 | tee bugfixes
# $ DRYRUN=yes bin/bugzilla_mesa.sh mesa-9.0.2..mesa-9.0.3
# $ DRYRUN=yes bin/bugzilla_mesa.sh mesa-9.0.2..mesa-9.0.3 | wc -l
# regex pattern: trim before url
trim_before='s/.*\(http\)/\1/'
# regex pattern: trim after url
trim_after='s/\(show_bug.cgi?id=[0-9]*\).*/\1/'
# regex pattern: always use https
use_https='s/http:/https:/'
# extract fdo urls from commit log
urls=$(git log $* | grep 'bugs.freedesktop.org/show_bug' | sed -e $trim_before -e $trim_after -e $use_https | sort | uniq)
# if DRYRUN is set to "yes", simply print the URLs and don't fetch the
# details from fdo bugzilla.
#DRYRUN=yes
if [ "x$DRYRUN" = xyes ]; then
for i in $urls
do
echo $i
done
else
echo "<ul>"
echo ""
for i in $urls
do
id=$(echo $i | cut -d'=' -f2)
summary=$(wget --quiet -O - $i | grep -e '<title>.*</title>' | sed -e 's/ *<title>Bug [0-9]\+ &ndash; \(.*\)<\/title>/\1/')
echo "<li><a href=\"$i\">Bug $id</a> - $summary</li>"
echo ""
done
echo "</ul>"
fi

View File

@@ -1,35 +0,0 @@
#!/bin/sh
# Script for generating a list of candidates for cherry-picking to a stable branch
#
# Usage examples:
#
# $ bin/get-pick-list.sh
# $ bin/get-pick-list.sh > picklist
# $ bin/get-pick-list.sh | tee picklist
# Grep for commits with "cherry picked from commit" in the commit message.
git log --reverse --grep="cherry picked from commit" origin/master..HEAD |\
grep "cherry picked from commit" |\
sed -e 's/^[[:space:]]*(cherry picked from commit[[:space:]]*//' -e 's/)//' > already_picked
# Grep for commits that were marked as a candidate for the stable tree.
git log --reverse --pretty=%H -i --grep='^\([[:space:]]*NOTE: .*[Cc]andidate\|CC:.*10\.1.*mesa-stable\)' HEAD..origin/master |\
while read sha
do
# Check to see whether the patch is on the ignore list.
if [ -f bin/.cherry-ignore ] ; then
if grep -q ^$sha bin/.cherry-ignore ; then
continue
fi
fi
# Check to see if it has already been picked over.
if grep -q ^$sha already_picked ; then
continue
fi
git log -n1 --pretty=oneline $sha | cat
done
rm -f already_picked

View File

@@ -1,251 +0,0 @@
#!/usr/bin/env python
#
# Copyright 2012 VMware Inc
# Copyright 2008-2009 Jose Fonseca
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
"""Perf annotate for JIT code.
Linux `perf annotate` does not work with JIT code. This script takes the data
produced by `perf script` command, plus the diassemblies outputed by gallivm
into /tmp/perf-XXXXX.map.asm and produces output similar to `perf annotate`.
See docs/llvmpipe.html for usage instructions.
The `perf script` output parser was derived from the gprof2dot.py script.
"""
import sys
import os.path
import re
import optparse
import subprocess
class Parser:
"""Parser interface."""
def __init__(self):
pass
def parse(self):
raise NotImplementedError
class LineParser(Parser):
"""Base class for parsers that read line-based formats."""
def __init__(self, file):
Parser.__init__(self)
self._file = file
self.__line = None
self.__eof = False
self.line_no = 0
def readline(self):
line = self._file.readline()
if not line:
self.__line = ''
self.__eof = True
else:
self.line_no += 1
self.__line = line.rstrip('\r\n')
def lookahead(self):
assert self.__line is not None
return self.__line
def consume(self):
assert self.__line is not None
line = self.__line
self.readline()
return line
def eof(self):
assert self.__line is not None
return self.__eof
mapFile = None
def lookupMap(filename, matchSymbol):
global mapFile
mapFile = filename
stream = open(filename, 'rt')
for line in stream:
start, length, symbol = line.split()
start = int(start, 16)
length = int(length,16)
if symbol == matchSymbol:
return start
return None
def lookupAsm(filename, desiredFunction):
stream = open(filename + '.asm', 'rt')
while stream.readline() != desiredFunction + ':\n':
pass
asm = []
line = stream.readline().strip()
while line:
addr, instr = line.split(':', 1)
addr = int(addr)
asm.append((addr, instr))
line = stream.readline().strip()
return asm
samples = {}
class PerfParser(LineParser):
"""Parser for linux perf callgraph output.
It expects output generated with
perf record -g
perf script
"""
def __init__(self, infile, symbol):
LineParser.__init__(self, infile)
self.symbol = symbol
def readline(self):
# Override LineParser.readline to ignore comment lines
while True:
LineParser.readline(self)
if self.eof() or not self.lookahead().startswith('#'):
break
def parse(self):
# read lookahead
self.readline()
while not self.eof():
self.parse_event()
asm = lookupAsm(mapFile, self.symbol)
addresses = samples.keys()
addresses.sort()
total_samples = 0
sys.stdout.write('%s:\n' % self.symbol)
for address, instr in asm:
try:
sample = samples.pop(address)
except KeyError:
sys.stdout.write(6*' ')
else:
sys.stdout.write('%6u' % (sample))
total_samples += sample
sys.stdout.write('%6u: %s\n' % (address, instr))
print 'total:', total_samples
assert len(samples) == 0
sys.exit(0)
def parse_event(self):
if self.eof():
return
line = self.consume()
assert line
callchain = self.parse_callchain()
if not callchain:
return
def parse_callchain(self):
callchain = []
while self.lookahead():
function = self.parse_call(len(callchain) == 0)
if function is None:
break
callchain.append(function)
if self.lookahead() == '':
self.consume()
return callchain
call_re = re.compile(r'^\s+(?P<address>[0-9a-fA-F]+)\s+(?P<symbol>.*)\s+\((?P<module>[^)]*)\)$')
def parse_call(self, first):
line = self.consume()
mo = self.call_re.match(line)
assert mo
if not mo:
return None
if not first:
return None
function_name = mo.group('symbol')
if not function_name:
function_name = mo.group('address')
module = mo.group('module')
function_id = function_name + ':' + module
address = mo.group('address')
address = int(address, 16)
if function_name != self.symbol:
return None
start_address = lookupMap(module, function_name)
address -= start_address
#print function_name, module, address
samples[address] = samples.get(address, 0) + 1
return True
def main():
"""Main program."""
optparser = optparse.OptionParser(
usage="\n\t%prog [options] symbol_name")
(options, args) = optparser.parse_args(sys.argv[1:])
if len(args) != 1:
optparser.error('wrong number of arguments')
symbol = args[0]
p = subprocess.Popen(['perf', 'script'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
parser = PerfParser(p.stdout, symbol)
parser.parse()
if __name__ == '__main__':
main()
# vim: set sw=4 et:

View File

@@ -1,29 +0,0 @@
#!/bin/bash
# This script is used to generate the list of changes that
# appears in the release notes files, with HTML formatting.
#
# Usage examples:
#
# $ bin/shortlog_mesa.sh mesa-9.0.2..mesa-9.0.3
# $ bin/shortlog_mesa.sh mesa-9.0.2..mesa-9.0.3 > changes
# $ bin/shortlog_mesa.sh mesa-9.0.2..mesa-9.0.3 | tee changes
typeset -i in_log=0
git shortlog $* | while read l
do
if [ $in_log -eq 0 ]; then
echo '<p>'$l'</p>'
echo '<ul>'
in_log=1
elif echo "$l" | egrep -q '^$' ; then
echo '</ul>'
echo
in_log=0
else
mesg=$(echo $l | sed 's/ (cherry picked from commit [0-9a-f]\+)//;s/\&/&amp;/g;s/</\&lt;/g;s/>/\&gt;/g')
echo ' <li>'${mesg}'</li>'
fi
done

103
common.py
View File

@@ -1,103 +0,0 @@
#######################################################################
# Common SCons code
import os
import os.path
import re
import subprocess
import sys
import platform as _platform
import SCons.Script.SConscript
#######################################################################
# Defaults
host_platform = _platform.system().lower()
if host_platform.startswith('cygwin'):
host_platform = 'cygwin'
# Search sys.argv[] for a "platform=foo" argument since we don't have
# an 'env' variable at this point.
if 'platform' in SCons.Script.ARGUMENTS:
target_platform = SCons.Script.ARGUMENTS['platform']
else:
target_platform = host_platform
_machine_map = {
'x86': 'x86',
'i386': 'x86',
'i486': 'x86',
'i586': 'x86',
'i686': 'x86',
'BePC': 'x86',
'Intel': 'x86',
'ppc' : 'ppc',
'BeBox': 'ppc',
'BeMac': 'ppc',
'AMD64': 'x86_64',
'x86_64': 'x86_64',
'sparc': 'sparc',
'sun4u': 'sparc',
}
# find host_machine value
if 'PROCESSOR_ARCHITECTURE' in os.environ:
host_machine = os.environ['PROCESSOR_ARCHITECTURE']
else:
host_machine = _platform.machine()
host_machine = _machine_map.get(host_machine, 'generic')
default_machine = host_machine
default_toolchain = 'default'
if target_platform == 'windows' and host_platform != 'windows':
default_machine = 'x86'
default_toolchain = 'crossmingw'
# find default_llvm value
if 'LLVM' in os.environ:
default_llvm = 'yes'
else:
default_llvm = 'no'
try:
if target_platform != 'windows' and \
subprocess.call(['llvm-config', '--version'], stdout=subprocess.PIPE) == 0:
default_llvm = 'yes'
except:
pass
#######################################################################
# Common options
def AddOptions(opts):
try:
from SCons.Variables.BoolVariable import BoolVariable as BoolOption
except ImportError:
from SCons.Options.BoolOption import BoolOption
try:
from SCons.Variables.EnumVariable import EnumVariable as EnumOption
except ImportError:
from SCons.Options.EnumOption import EnumOption
opts.Add(EnumOption('build', 'build type', 'debug',
allowed_values=('debug', 'checked', 'profile', 'release')))
opts.Add(BoolOption('verbose', 'verbose output', 'no'))
opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
opts.Add(EnumOption('platform', 'target platform', host_platform,
allowed_values=('cygwin', 'darwin', 'freebsd', 'haiku', 'linux', 'sunos', 'windows')))
opts.Add(BoolOption('embedded', 'embedded build', 'no'))
opts.Add('toolchain', 'compiler toolchain', default_toolchain)
opts.Add(BoolOption('gles', 'EXPERIMENTAL: enable OpenGL ES support', 'no'))
opts.Add(BoolOption('llvm', 'use LLVM', default_llvm))
opts.Add(BoolOption('openmp', 'EXPERIMENTAL: compile with openmp (swrast)', 'no'))
opts.Add(BoolOption('debug', 'DEPRECATED: debug build', 'yes'))
opts.Add(BoolOption('profile', 'DEPRECATED: profile build', 'no'))
opts.Add(BoolOption('quiet', 'DEPRECATED: profile build', 'yes'))
opts.Add(BoolOption('texture_float', 'enable floating-point textures and renderbuffers', 'no'))
if host_platform == 'windows':
opts.Add(EnumOption('MSVC_VERSION', 'MS Visual C++ version', None, allowed_values=('7.1', '8.0', '9.0', '10.0', '11.0', '12.0')))

File diff suppressed because it is too large Load Diff

View File

@@ -1,4 +0,0 @@
Known issues in the ARB_color_buffer_float implementation:
- Rendering to multiple render targets, some fixed-point, some floating-point, with FIXED_ONLY fragment clamping and polygon smooth enabled may write incorrect values to the fixed point buffers (depends on spec interpretation)
- For fragment programs with ARB_fog_* options, colors are clamped before fog application regardless of the fragment clamping setting (this depends on spec interpretation)

View File

@@ -1,184 +0,0 @@
Status of OpenGL 3.x features in Mesa
Note: when an item is marked as "DONE" it means all the core Mesa
infrastructure is complete but it may be the case that few (if any) drivers
implement the features.
OpenGL Core and Compatibility context support
OpenGL 3.1 and later versions are only supported with the Core profile.
There are no plans to support GL_ARB_compatibility. The last supported OpenGL
version with all deprecated features is 3.0. Some of the later GL features
are exposed in the 3.0 context as extensions.
Feature Status
----------------------------------------------------- ------------------------
GL 3.0 --- all DONE: i965, nv50, nvc0, r600, radeonsi
GLSL 1.30 DONE ()
glBindFragDataLocation, glGetFragDataLocation DONE
Conditional rendering (GL_NV_conditional_render) DONE (r300, swrast)
Map buffer subranges (GL_ARB_map_buffer_range) DONE (r300, swrast)
Clamping controls (GL_ARB_color_buffer_float) DONE (r300)
Float textures, renderbuffers (GL_ARB_texture_float) DONE (r300)
GL_EXT_packed_float DONE ()
GL_EXT_texture_shared_exponent DONE (swrast)
Float depth buffers (GL_ARB_depth_buffer_float) DONE ()
Framebuffer objects (GL_ARB_framebuffer_object) DONE (r300, swrast)
GL_ARB_half_float_pixel DONE (r300, swrast)
GL_ARB_half_float_vertex DONE (r300, swrast)
GL_EXT_texture_integer DONE ()
GL_EXT_texture_array DONE ()
Per-buffer blend and masks (GL_EXT_draw_buffers2) DONE (swrast)
GL_EXT_texture_compression_rgtc DONE (r300, swrast)
GL_ARB_texture_rg DONE (r300, swrast)
Transform feedback (GL_EXT_transform_feedback) DONE ()
Vertex array objects (GL_ARB_vertex_array_object) DONE (all drivers)
sRGB framebuffer format (GL_EXT_framebuffer_sRGB) DONE ()
glClearBuffer commands DONE
glGetStringi command DONE
glTexParameterI, glGetTexParameterI commands DONE
glVertexAttribI commands DONE
Depth format cube textures DONE ()
GLX_ARB_create_context (GLX 1.4 is required) DONE
Multisample anti-aliasing DONE (r300)
GL 3.1 --- all DONE: i965, nv50, nvc0, r600, radeonsi
GLSL 1.40 DONE ()
Forward compatible context support/deprecations DONE ()
Instanced drawing (GL_ARB_draw_instanced) DONE (swrast)
Buffer copying (GL_ARB_copy_buffer) DONE (r300, swrast)
Primitive restart (GL_NV_primitive_restart) DONE (r300)
16 vertex texture image units DONE ()
Texture buffer objs (GL_ARB_texture_buffer_object) DONE for OpenGL 3.1 contexts ()
Rectangular textures (GL_ARB_texture_rectangle) DONE (r300, swrast)
Uniform buffer objs (GL_ARB_uniform_buffer_object) DONE (swrast)
Signed normalized textures (GL_EXT_texture_snorm) DONE (r300)
GL 3.2 --- all DONE: i965, nv50, nvc0, radeonsi
Core/compatibility profiles DONE
GLSL 1.50 DONE ()
Geometry shaders DONE ()
BGRA vertex order (GL_ARB_vertex_array_bgra) DONE (r300, r600, swrast)
Base vertex offset(GL_ARB_draw_elements_base_vertex) DONE (r300, r600, swrast)
Frag shader coord (GL_ARB_fragment_coord_conventions) DONE (r300, r600, swrast)
Provoking vertex (GL_ARB_provoking_vertex) DONE (r300, r600, swrast)
Seamless cubemaps (GL_ARB_seamless_cube_map) DONE (r600)
Multisample textures (GL_ARB_texture_multisample) DONE (r600)
Frag depth clamp (GL_ARB_depth_clamp) DONE (r600, swrast)
Fence objects (GL_ARB_sync) DONE (r300, r600, swrast)
GLX_ARB_create_context_profile DONE
GL 3.3 --- all DONE: i965, nv50, nvc0, radeonsi
GLSL 3.30 DONE ()
GL_ARB_blend_func_extended DONE (r600, softpipe)
GL_ARB_explicit_attrib_location DONE (all drivers that support GLSL)
GL_ARB_occlusion_query2 DONE (r300, r600, swrast)
GL_ARB_sampler_objects DONE (all drivers)
GL_ARB_shader_bit_encoding DONE (r600)
GL_ARB_texture_rgb10_a2ui DONE (r600)
GL_ARB_texture_swizzle DONE (r300, r600, swrast)
GL_ARB_timer_query DONE (r600)
GL_ARB_instanced_arrays DONE (r300, r600)
GL_ARB_vertex_type_2_10_10_10_rev DONE (r600)
GL 4.0:
GLSL 4.0 not started
GL_ARB_texture_query_lod DONE (i965)
GL_ARB_draw_buffers_blend DONE (i965, nv50, nvc0, r600, radeonsi, softpipe)
GL_ARB_draw_indirect DONE (i965)
GL_ARB_gpu_shader5 started
GL_ARB_gpu_shader_fp64 not started
GL_ARB_sample_shading DONE (i965)
GL_ARB_shader_subroutine not started
GL_ARB_tessellation_shader not started
GL_ARB_texture_buffer_object_rgb32 DONE (i965, r600, radeonsi, softpipe)
GL_ARB_texture_cube_map_array DONE (i965, nvc0, r600, softpipe)
GL_ARB_texture_gather DONE (i965)
GL_ARB_transform_feedback2 DONE (i965, nv50, nvc0, r600, radeonsi)
GL_ARB_transform_feedback3 DONE (i965, nv50, nvc0, r600, radeonsi)
GL 4.1:
GLSL 4.1 not started
GL_ARB_ES2_compatibility DONE (i965, nv50, nvc0, r300, r600, radeonsi)
GL_ARB_get_program_binary DONE (0 binary formats)
GL_ARB_separate_shader_objects started (Ian Romanick, Gregory Hainaut)
GL_ARB_shader_precision not started
GL_ARB_vertex_attrib_64bit not started
GL_ARB_viewport_array DONE (i965)
GL 4.2:
GLSL 4.2 not started
GL_ARB_texture_compression_bptc not started
GL_ARB_compressed_texture_pixel_storage not started
GL_ARB_shader_atomic_counters DONE (i965)
GL_ARB_texture_storage DONE (all drivers)
GL_ARB_transform_feedback_instanced DONE (i965, nv50, nvc0, r600, radeonsi)
GL_ARB_base_instance DONE (i965, nv50, nvc0, r600, radeonsi)
GL_ARB_shader_image_load_store in progress (curro)
GL_ARB_conservative_depth DONE (all drivers that support GLSL 1.30)
GL_ARB_shading_language_420pack DONE (all drivers that support GLSL 1.30)
GL_ARB_internalformat_query DONE (i965, nv50, nvc0, r300, r600, radeonsi)
GL_ARB_map_buffer_alignment DONE (all drivers)
GL 4.3:
GLSL 4.3 not started
GL_ARB_arrays_of_arrays started
GL_ARB_ES3_compatibility DONE (i965)
GL_ARB_clear_buffer_object DONE (all drivers)
GL_ARB_compute_shader started (Paul Berry)
GL_ARB_copy_image not started
GL_KHR_debug DONE (all drivers)
GL_ARB_explicit_uniform_location not started
GL_ARB_fragment_layer_viewport not started
GL_ARB_framebuffer_no_attachments not started
GL_ARB_internalformat_query2 not started
GL_ARB_invalidate_subdata DONE (all drivers)
GL_ARB_multi_draw_indirect DONE (i965)
GL_ARB_program_interface_query not started
GL_ARB_robust_buffer_access_behavior not started
GL_ARB_shader_image_size not started
GL_ARB_shader_storage_buffer_object not started
GL_ARB_stencil_texturing not started
GL_ARB_texture_buffer_range DONE (nv50, nvc0, i965, r600, radeonsi)
GL_ARB_texture_query_levels DONE (i965)
GL_ARB_texture_storage_multisample DONE (all drivers that support GL_ARB_texture_multisample)
GL_ARB_texture_view started (Courtney Goeltzenleuchter, Chris Forbes)
GL_ARB_vertex_attrib_binding DONE (all drivers)
GL 4.4:
GLSL 4.4 not started
GL_MAX_VERTEX_ATTRIB_STRIDE not started
GL_ARB_buffer_storage not started
GL_ARB_clear_texture not started
GL_ARB_enhanced_layouts not started
GL_ARB_multi_bind started (Fredrik Höglund)
GL_ARB_query_buffer_object not started
GL_ARB_texture_mirror_clamp_to_edge DONE (i965, nv30, nv50, nvc0, r300, r600, radeonsi, swrast)
GL_ARB_texture_stencil8 not started
GL_ARB_vertex_type_10f_11f_11f_rev DONE (i965, r600)
More info about these features and the work involved can be found at
http://dri.freedesktop.org/wiki/MissingFunctionality

182
docs/INSTALL.GNU Normal file
View File

@@ -0,0 +1,182 @@
Basic Installation
==================
These are generic installation instructions.
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, a file
`config.cache' that saves the results of its tests to speed up
reconfiguring, and a file `config.log' containing compiler output
(useful mainly for debugging `configure').
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release. If at some point `config.cache'
contains results you don't want to keep, you may remove or edit it.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The simplest way to compile this package is:
1. `cd' to the directory containing the package's source code and type
`./configure' to configure the package for your system. If you're
using `csh' on an old version of System V, you might need to type
`sh ./configure' instead to prevent `csh' from trying to execute
`configure' itself.
Running `configure' takes awhile. While running, it prints some
messages telling which features it is checking for.
2. Type `make' to compile the package.
3. Optionally, type `make check' to run any self-tests that come with
the package.
4. Type `make install' to install the programs and any data files and
documentation.
5. You can remove the program binaries and object files from the
source code directory by typing `make clean'. To also remove the
files that `configure' created (so you can compile the package for
a different kind of computer), type `make distclean'. There is
also a `make maintainer-clean' target, but that is intended mainly
for the package's developers. If you use it, you may have to get
all sorts of other programs in order to regenerate files that came
with the distribution.
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
Or on systems that have the `env' program, you can do it like this:
env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you must use a version of `make' that
supports the `VPATH' variable, such as GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not supports the `VPATH'
variable, you have to compile the package for one architecture at a time
in the source code directory. After you have installed the package for
one architecture, use `make distclean' before reconfiguring for another
architecture.
Installation Names
==================
By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc. You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PATH'.
You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you
give `configure' the option `--exec-prefix=PATH', the package will use
PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.
In addition, if you use an unusual directory layout you can give
options like `--bindir=PATH' to specify different values for particular
kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.
If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Optional Features
=================
Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System). The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.
For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.
Specifying the System Type
==========================
There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on. Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
CPU-COMPANY-SYSTEM
See the file `config.sub' for the possible values of each field. If
`config.sub' isn't included in this package, then this package doesn't
need to know the host type.
If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option to select the type of system they will
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share,
you can create a site shell script called `config.site' that gives
default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Operation Controls
==================
`configure' recognizes the following options to control how it
operates.
`--cache-file=FILE'
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.

View File

@@ -8,18 +8,19 @@ Name Strings
Contact
Brian Paul (brian.paul 'at' tungstengraphics.com)
Brian Paul, brianp 'at' mesa3d.org
Status
Obsolete.
Shipping (since Mesa version 2.2)
Version
$Id: MESA_resize_buffers.spec,v 1.1 1999/07/20 00:30:41 brianp Exp $
Number
196
XXX none assigned
Dependencies
@@ -35,7 +36,7 @@ Overview
Mesa's glViewport command queries the current window size and updates
its internal data structors accordingly. This normally works fine
since most applications call glViewport in response to window size
since most applications call glViewport in responce to window size
changes.
In some situations, however, the application may not call glViewport
@@ -65,7 +66,7 @@ Additions to the AGL/GLX/WGL Specifications
Errors
INVALID_OPERATION is generated if glResizeBuffersMESA is called between
INVALID_OPERATION is generated if ResizeBuffersMESA is called betweeen
Begin and End.
New State

114
docs/MESA_window_pos.spec Normal file
View File

@@ -0,0 +1,114 @@
Name
MESA_window_pos
Name Strings
GL_MESA_window_pos
Contact
Brian Paul, brianp 'at' mesa3d.org
Status
Shipping (since Mesa version 1.2.8)
Version
$Id: MESA_window_pos.spec,v 1.1 1999/07/20 00:30:41 brianp Exp $
Number
XXX non assigned
Dependencies
OpenGL 1.0 is required.
The extension is written against the OpenGL 1.2 Specification
Overview
In order to set the current raster position to a specific window
coordinate with the RasterPos command, the modelview matrix, projection
matrix and viewport must be set very carefully. Furthermore, if the
desired window coordinate is outside of the window's bounds one must
rely a subtle side-effect of the Bitmap command in order to circumvent
frustum clipping.
This extension provides a set of functions to directly set the
current raster position, bypassing the modelview matrix, the
projection matrix and the viewport to window mapping. Furthermore,
clip testing is not performed.
This greatly simplifies the process of setting the current raster
position to a specific window coordinate prior to calling DrawPixels,
CopyPixels or Bitmap.
New Procedures and Functions
void WindowPos2dMESA(double x, double y)
void WindowPos2fMESA(float x, float y)
void WindowPos2iMESA(int x, int y)
void WindowPos2sMESA(short x, short y)
New Tokens
none
Additions to Chapter 2 of the OpenGL 1.2 Specification (OpenGL Operation)
- (2.12, p. 41) Insert after third paragraph:
Alternately, the current raster position may be set by one of the
WindowPosMESA commands:
void WindowPos{234}{sidf}MESA( T coords );
void Window Pos{234}{sidf}vMESA( T coords );
WindosPos4MESA takes four values indicating x, y, z, and w.
WindowPos3MESA (or WindowPos2MESA) is analaguos, but sets only
x, y, and z with w implicitly set to 1 (or only x and y with z
implicititly set to 0 and w implicitly set to 1).
WindowPosMESA operates like RasterPos except that the current modelview
matrix, projection matrix and viewport parameters are ignored and the
clip test operation always passes. The current raster position values
are directly set to the parameters passed to WindowPosMESA. The current
color, color index and texture coordinate update the current raster
position's associated data.
The current raster distance ??? XXX ???
Additions to the AGL/GLX/WGL Specifications
None
GLX Protocol
Not specified at this time. However, a protocol message very similar
to that of RasterPos is expected.
Errors
INVALID_OPERATION is generated if WindowPosMESA is called betweeen
Begin and End.
New State
None.
New Implementation Dependent State
None.
Revision History
* Revision 1.0 - Initial specification

596
docs/README.3DFX Normal file
View File

@@ -0,0 +1,596 @@
3Dfx Glide device driver for Mesa 3.1
(see below for FAQ)
This software is distributed under the terms of the GNU Library
General Public License, see the LICENSE file for details.
What do you need ?
------------------
- A PC with a 3Dfx Voodoo1/2 Graphics or Voodoo Rush based board
(Pure3D, Monster 3D, R3D, Obsidian, Stingray 128/3D, etc.).
The Quantum3D Obsidian3D-2 X-24 requires some special env. setting
under Linux (more information in the "Useful Glide Environment
Variables");
- Mesa 3.1;
- The 3Dfx Glide library 2.3 or later for your OS (the 2.4 works fine).
The Voodoo2 requires the Glide library 2.51. The Glide 3.1 is not
compatible with the Glide 2.x so it doesn't work with the current
version of the driver;
- A compiler supported by the Glide library (Micro$oft VC++ (tested),
Watcom (tested), GCC for Linux (tested), etc.);
- A lot of patience, this is an alpha release.
- It's nice to have two monitors - one for your normal graphics
card and one for your 3Dfx card. If something goes wrong with
an application using the 3Dfx hardware you can still see your
normal screen in order to recover.
Tested on:
----------
Windows 95 - David Bucciarelli
Windows NT - Henri Fousse
MS-DOS
Linux - Daryll Strauss, Brian Paul, David Bucciarelli
FreeBSD
BeOS - Duncan Wilcox
MacOS - Fazekas Miklos
What is able to do ?
--------------------
- It is able accelerate points, lines and polygon with flat
shading, gouraud shading, Z-buffer, texture mapping, blending, fog and
antialiasing (when possible). There is also the support for rendering
in a window with a slow trick for the Voodoo Graphics (available only
for Linux) and at full speed with the Voodoo Rush chipset.
Under Linux is also possible to switch on-the-fly between the fullscreen
and in-window rendering hack.
There is also the support for using more than one Voodoo Graphics in the
some application/PC (you can create one context for each board and use
multiple video outputs for driving monitors, videoprojectors or HMDs).
The driver is able to fallback to pure software rendering when afeature
isn't supported by the Voodoo hardware (however software rendering is
very slow compared to hardware supported rendering)
How to compile:
---------------
Linux:
------
Here are the basic steps for using the 3Dfx hardware with Mesa
on Linux:
- You'll need the Glide library and headers. Mesa expects:
/usr/local/glide/include/*.h // all the Glide headers
/usr/local/glide/lib/libglide2x.so
If your Glide libraries and headers are in a different directory
you'll have to modify the Mesa-config and mklib.glide files.
- Unpack the MesaLib-3.1.tar.gz and MesaDemos-3.1.tar.gz archives;
- If you're going to use a newer Mesa/Glide driver than v0.27 then
unpack the new driver archive over the Mesa directory.
- In the Mesa-3.1 directory type "make linux-glide"
- Compilation _should_ finish without errors;
- Set your LD_LIBRARY_PATH environment variable so that the
libglide2x.so and Mesa library files can be found. For example:
setenv LD_LIBRARY_PATH "/usr/local/glide/lib:/SOMEDIR/Mesa-3.1/lib"
- You'll have to run Glide-based programs as root or set the suid
bit on executables;
- Try a demo:
cd gdemos
su
setenv MESA_GLX_FX f
./gears (hit ESC to exit)
- You can find the demos especially designed for the Voodoo driver in
in the Mesa-3.1/3Dfx/demos directory (type "make" in order to compile
everything).
MacOS:
------
Check the WEB page at http://valerie.inf.elte.hu/~boga/Mesa.html
MS Windows:
-----------
For the MSVC++:
- The glide2x.lib have to be in the default MSVC++ lib directory;
- The Glide headers have to be in the default MSVC++ include directory;
- You must have the vcvars32.bat script in your PATH;
- Go to the directory Mesa-3.1 and run the mesafx.bat;
- The script will compile everything (Mesa-3.1/lib/OpenGL32.{lib,dll},
Mesa-3.1/lib/GLU32.{lib,dll}, Mesa-3.1/lib/GLUT32.{lib,dll} and
Voodoo demos);
- At the end, you will be in the Mesa-3.1/3Dfx/demos directory;
- Try some demo (fire.exe, teapot.exe, etc.) in order to check if
everything is OK (you can use Alt-Tab or Ctrl-F9 to switch between
the Voodoo screen and the windows desktop);
- Remember to copy the Mesa OpenGL32.dll, GLU32.dll and GLUT32.dll in the
some directory were you run your Mesa based applications.
- I think that you can easy change the Makefile.fx files in order
to work with other kind of compilers;
- To discover how open the 3Dfx screen, read the sources under
the Mesa-3.1/3Dfx/demos directory. You can use the GLUT library or
the Diego Picciani's wgl emulator.
NOTE: the MSVC++ 5.0 optimizer is really buggy. Also if you install the
SP3, you could have some problem (you can disable optimization in order
solve these kind of problems).
Doing more with Mesa & Linux Glide:
-----------------------------------
The MESA_GLX_FX environment variable can be used to coax most
GLX-based programs into using Glide (and the __GLUT library
is GLX-based__).
Full-screen 3Dfx rendering:
---------------------------
1. Set the MESA_GLX_FX variable to "fullscreen":
ksh:
export MESA_GLX_FX = "fullscreen"
csh:
setenv MESA_GLX_FX fullscreen
2. As root, run a GLX-based program (any GLUT demo on Linux).
3. Be careful: once the 3Dfx screen appears you won't be able
to see the GLUT windows on your X display. This can make using
the mouse tricky! One solution is to hook up your 3Dfx card to
a second monitor. If you can do this then set these env vars
first:
setenv SST_VGA_PASS 1
setenv SST_NOSHUTDOWN
or for the Voodoo2:
setenv SSTV2_VGA_PASS 1
setenv SSTV2_NOSHUTDOWN
Rendering into an X window with the help of the Voodoo hardware:
----------------------------------------------------------------
1. Start your X server in 16 bpp mode (XFree86: startx -- -bpp 16)
in order to have the best performance and the best visual
quality. However you can use any visual depth supported by X.
2. Set the following environment variables:
export MESA_GLX_FX="window" // to enable window rendering
export SST_VGA_PASS=1 // to stop video signal switching
export SST_NOSHUTDOWN=1 // to stop video signal switching
OR
setenv MESA_GLX_FX window
setenv SST_VGA_PASS 1
setenv SST_NOSHUTDOWN 1
(the Voodoo2 requires to use "SSTV2_" instead "SST_").
3. As root, try running a GLX-based program
How does it work? We use the 3Dfx hardware to do rendering then
copy the image from the 3Dfx frame buffer into an X window when
the SwapBuffers() function is called. The problem with this
idea is it's slow. The image must be copied from the 3Dfx frame
buffer to main memory then copied into the X window (and when the X
visual depth doesn't match the Voodoo framebufffer bit per pixel, it
is required also a pixel format translation).
On the fly switching between in window rendering and full screen rendering
--------------------------------------------------------------------------
The Mesa 2.6 has introduced the capability of switching
on-the-fly between the fullscreen/fullspeed rendering and the in-window
hack and vice versa. The on-the-fly switching requires a direct support
by the application but it is really easy to add. You have to start
your X server in 16 bpp mode and to add the following lines to your
application:
#if defined(FX) && define(XMESA)
#include <GL/xmesa.h>
static int fullscreen=1;
#endif
...
/* In the GLUT keyboard event callback */
#if defined(FX) && !define(WIN32)
case ' ':
fullscreen=(!fullscreen);
XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
break;
#endif
...
See the 3Dfx/demos/tunnel.c program
for an example. You have to set the -DXMESA flag in the Makefile's COPTS
to enable it.
Rendering into an X window with the X11 software driver:
--------------------------------------------------------
Set the MESA_GLX_FX variable to "disable" your GLX-based program will use
the X11 software driver (the 3Dfx hardware isn't used at all).
Useful Glide Environment Variables:
-----------------------------------
- To disable the 3Dfx logo, set the FX_GLIDE_NO_SPLASH variable.
- To disable video signal switching:
setenv SST_VGA_PASS 1
setenv SST_NOSHUTDOWN
or for the Voodoo2:
setenv SSTV2_VGA_PASS 1
setenv SSTV2_NOSHUTDOWN
- To set the default screen refresh rate:
setenv SST_SCREENREFRESH=75
the supported values are 60, 70, 72, 75, 80, 85, 90, 100, 120.
- To force the Mesa library to swap buffers as fast as possible,
without any vertical blanking synchronization (useful for benchmarks):
setenv FX_GLIDE_SWAPINTERVAL 0
setenv SST_SWAP_EN_WAIT_ON_VIDSYNC 0
- You can slight improve the performances of your Voodoo1 board with
the following env. var.:
setenv SST_FASTMEM 1
setenv SST_PCIRD 1
setenv SST_GRXCLK 57
(don't use this setting with the Quantum3D 100SB or with any other
SLI configuration: it will hang everything !).
The following setting can be used with the Voodoo2:
setenv SSTV2_FASTMEM_RAS_READS=1
setenv SSTV2_FASTPCIRD=1
setenv SSTV2_GRXCLK=95
- The Quantum3D Obsidian3D-2 X-24 requires some special env. setting
in order to work under Linux:
export SSTV2_FT_CLKDEL=5
export SSTV2_TF0_CLKDEL=7
export SSTV2_TF1_CLKDEL=7
export SSTV2_TF2_CLKDEL=7
export SSTV2_SLIM_VIN_CLKDEL=3
export SSTV2_SLIM_VOUT_CLKDEL=2
export SSTV2_SLIS_VIN_CLKDEL=3
export SSTV2_SLIS_VOUT_CLKDEL=2
(Thanks to Phil Ross for this trick).
The Mesa/Voodoo Environment Variables:
--------------------------------------
- Only for Windows/Voodoo Rush users, if you define the
env. var. MESA_WGL_FX:
export MESA_WGL_FX=fullscreen
you will get fullscreen rendering;
- Only for Windows/Voodoo Rush users, if you define the
env. var. MESA_WGL_FX:
export MESA_WGL_FX=window
you will get window rendering (default value);
- Only for Linux users, you can find more informations about
the env. var. MESA_GLX_FX in the "Doing more with Mesa & Linux Glide"
section;
- If you define the env. var. MESA_FX_SWAP_PENDING:
export MESA_FX_SWAP_PENDING=4
you will able to set the maximum number of swapbuffers
commands in the Voodoo FIFO after a swapbuffer (default value: 2);
- If you define the env. var. MESA_FX_INFO:
export MESA_FX_INFO=1
you will get some useful statistic.
Know BUGS and Problems:
-----------------------
- fog doesn't work in the right way when using the glDepthRange() function;
- Maximum texture size: 256x256 (this is an hardware limit);
- Texture border aren't yet supported;
- A GL_BLEND in a glTexEnv() is not supported (it is an hardware limit);
- Use the glBindTexture extension (standard in OpenGL 1.1) for texture
mapping (the old way: glTexImage inside a display list, download
the texture map each time that you call the display list !!!);
- Stencil buffer and Accumulation buffer are emulated in software (they are not
directly supported by the Hardware);
- Color index mode not implemented (this is an hardware limit);
- Thre is an know bug in the Linux Glide library so the in-window-rendering hack
and any other operations that requires to read the Voodoo frame buffer
(like the accumulation buffer support) doesn't work on Voodoo SLI cards.
- The driver switch to pure software (_slow_) rendering when:
- Stencil enabled;
- Using the Accumulation buffer;
- Blend enabled and blend equation != GL_FUNC_ADD_EXT;
- Color logic operation enabled and color logic operation != GL_COPY;
- Using GL_SEPARATE_SPECULAR_COLOR;
- The four values of glColorMask() aren't the some;
- Texture 1D or 3D enabled;
- Texture function is GL_BLEND;
- Using the Multitexture extension with Voodoo cards with only one TMU;
- Using the Multitexture extension with Voodoo cards with more than
one TMU, and texture function isn't GL_MODULATE;
- Point size is != 1.0 or point params vector != (1.0,0.0,0.0);
- Line width != 1.0 or using stipple lines.
- Using polygon offset or stipple polygons;
NOTE: this is list is not yet complete.
Hints and Special Features:
---------------------------
- Under Linux and with a Voodoo Graphics board, you can use
XMesaSetFXmode(XMESA_FX_FULLSCREEN or XMESA_FX_WINDOW) in order to
switch on the fly between fullscreen rendering and the in-window-rendering
hack.
- The driver is able to use all the texture memory available: 2/4MB on
Voodoo1 boards and 8MB (!) on high-end Voodoo1 and Voodoo2 boards.
- Trilinear filtering is fully supported on Voodoo boards with two TMUs
(high-end Voodoo1 boards and Voodoo2 boards). When only one TMU is
available the driver fallback to bilinear filter also if you ask
for trilinear filtering.
- The Voodoo driver support multiple Voodoo Graphics boards in the
some PC. Using this feature, you can write applications that use
multiple monitors, videoprojectors or HMDs for the output. See
Mesa-3.1/3Dfx/demos/tunnel2.c for an example of how setup one
context for each board.
- The v0.19 introduces a new powerful texture memory manager: the
texture memory is used as a cache of the set of all defined texture
maps. You can now define several MBs of texture maps also with a 2MB
of texture memory (the texture memory manager will do automatically
all the swap out/swap in
texture memory work). The new texture memory manager has also
solved a lot of other bugs/no specs compliance/problems
related to the texture memory usage.
- Use triangles and quads strip: they are a LOT faster than sparse
triangles and quads.
- The Voodoo driver supports the GL_EXT_paletted_texture. it works
only with GL_COLOR_INDEX8_EXT, GL_RGBA palettes and the alpha value
is ignored because this is a limitation of the the current Glide
version and of the Voodoo hardware. See Mesa-3.1/3Dfx/demos/paltex.c for
a demo of this extension.
- The Voodoo driver directly supports 3Dfx Global Palette extension.
It was written for GLQuake and I think that it isn't a good idea
to use this extension for any other purpose (it is a trick). See
Mesa-3.1/3Dfx/demos/glbpaltex.c for a demo of this extension.
- The Voodoo driver chooses the screen resolution according to the
requested window size. If you open a 640x480 window, you will get
a 640x480 screen resolution, if you open a 800x600 window, you
will get a 800x600 screen resolution, etc.
Most GLUT demos support the '-geometry' option, so you can choose
the screen resolution: 'tunnel -geometry 800x600'.
Clearly, you Voodoo board must have enough framebuffer RAM (otherwise
the window creation will fail).
- The glGetString(GL_RENDERER) returns more information
about the hardware configuration: "Mesa Glide <version>
<Voodoo_Graphics|Voodoo_Rush|UNKNOWN> <num> CARD/<num> FB/
<num> TM/<num> TMU/<NOSLI|SLI>"
where: <num> CARD is the card used for the current context,
<num> FB is the number of MB for the framebuffer,
<num> TM is the number of MB for the texture memory,
<num> TMU is the number of TMU. You can try to run
Mesa/demos/glinfo in order to have an example of the output.
Did you find a lot BUGs and problems ? Good, send me an email.
FAQ:
----
For a complete FAQ check the Bernd Kreimeier's Linux 3Dfx HOWTO
available at http://www.gamers.org/dEngine/xf3D (it includes also
a lot of informations not strictly related to Linux, so it can be
useful also if you don't use Linux)
1. What is 3Dfx?
3Dfx Interactive, Inc. is the company which builds the VooDoo 3-D graphics
chipset (and others) used in popular PC cards such as the Diamond Monster 3D
and the Orchid Righteous 3D (more informations at http://www.3dfx.com).
2. What is Glide?
Glide is a "thin" programming interface for the 3Dfx hardware. It was
originally written for Windows/Intel but has been ported to Linux/Intel
by Daryll Strauss.
3Dfx, Inc. should be applauded for allowing the Linux version of Glide
to be written.
You can directly program with the Glide library if you wish. You can
obtain Glide from the "Developer" section of the 3Dfx website: www.3dfx.com
There's a Linux/Glide newsgroup at news://news.3dfx.com/3dfx.glide.linux
3. What is fxmesa?
"fxmesa" is the name of the Mesa device driver for the 3Dfx Glide library.
It was written by David Bucciarelli and others. It works on both Linux
and Windows. Basically, it allows you to write and run OpenGL-style programs
on the 3Dfx hardware.
4. What is GLQuake?
Quake is a very popular game from id software, Inc. See www.idsoftware.com
GLQuake is a version of Quake written for OpenGL. There is now a Linux
version of GLQuake with works with the Mesa/3Dfx/Glide combo.
Here's what you need to run GLQuake on Linux:
PC with 100MHz Pentium or better
a 3Dfx-based card
Mesa 3.1 libraries: libMesaGL.so libMesaGLU.so
Glide 2.4 libraries: libglide2x.so libtexus.so
GLQuake for Linux.
Also, the windows version of GLQuake works fine with the Mesa OpenGL32.dll,
you have only to copy the Mesa-3.1/lib/OpenGL32.dll in the GLQuake directory
in order to test 'MesaQuake'.
5. What is GLUT?
GLUT is Mark Kilgard's OpenGL Utility Toolkit. It provides an API for
writing portable OpenGL programs with support for multiple windows, pop-
up menus, event handling, etc.
Check the Mark's home page for more informations (http://reality.sgi.com/mjk_asd).
Every OpenGL programmer should check out GLUT.
GLUT on Linux uses GLX.
6. What is GLX?
GLX is the OpenGL extension to the X Window System. I defines both a
programming API (glX*() functions) and a network protocol. Mesa implements
an emulation of GLX on Linux. A real GLX implementation would requires
hooks into the X server. The 3Dfx hardware can be used with GLX-based
programs via the MESA_GLX_FX environment variable.
7. Is the Voodoo driver able to use the 4Mb texture memory of
the Pure3D boards ?
Yes, the Voodoo driver v0.20 includes the support for Voodoo
Graphics boards with more than 2Mb of texture memory.
8. Do the Voodoo driver support the Voodoo Rush under Windows ?
Yes, Diego Picciani has developed the support for the Voodoo
Rush but David Bucciarelli has a Pure3D and a Monster3D and Brian Paul
has a Monster3D, so the new versions of the Mesa/Voodoo sometime are
not tested with the Voodoo Rush.
9. Do the Voodoo driver support the Voodoo Rush under Linux ?
No because the Linux Glide doesn't (yet) support the Voodoo Rush.
10. Can I sell my Mesa/Voodoo based software and include
a binary copy of the Mesa in order to make the software
working out of the box ?
Yes, you have simply to include some informations about authors
and where the library sources are available (check the LICENSE
file for more informations about the GNU GPL).
11. Which is the best make target for compiling the Mesa for
Linux GLQuake ('make linux-glide', 'make linux-386-glide', etc.) ?
'make linux-386-opt-glide' for Voodoo1 and 'make linux-386-opt-V2-glide'
for Voodoo2 boards because it doesn't include the '-fPIC'
option (4-5% faster).
12. Can I use a Mesa compiled with a 'make linux-386-opt-V2-glide'
for my applications/programs/demos ?
Yes, there is only one constrain: you can't run two Mesa applications
at the some time. This isn't a big issue with the today Voodoo Graphics.
Thanks to:
----------
Henri Fousse (he has written several parts of the v0.15 and the old GLUT
emulator for Win);
Diego Picciani (he has developed all the Voodoo Rush support and the wgl
emulator);
Daryll Strauss (for the Linux Glide and the first Linux support);
Brian Paul (of course);
Dave 'Zoid' Kirsch (for the Linux GLQuake and Linux Quake2test/Q2 ports)
Bernd Kreimeier (for the Linux 3Dfx HOWTO and for pushing companies to offer
a better Linux support)
3Dfx and Quantum3D (for actively supporting Linux)
The most update places where find Mesa VooDoo driver related informations are
the Mesa mailing list and my driver WEB page
(http://www-hmw.caribel.pisa.it/fxmesa/index.shtml)
David Bucciarelli (davibu@tin.it)
Humanware s.r.l.
Via XXIV Maggio 62
Pisa, Italy
Tel./Fax +39-50-554108
email: info.hmw@plus.it
www: www-hmw.caribel.pisa.it

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AMIGA AMIWIN PORT of MESA: THE OPENGL SOFTWARE EMULATION
========================================================
Port by Victor Ng-Thow-Hing (victorng@dgp.toronto.edu)
Original Author (Brian Paul (brianp@ssec.wisc.edu)
Dec.1 , 1995: Port of release Mesa 1.2.5
- Modifications made to minimize changes to Mesa distribution.
Nov.25, 1995: Port of release Mesa 1.2.4
HISTORY
=======
As a 3D graphics progammer, I was increasingly frustrated to see OpenGL
appearing on so many platforms EXCEPT the Amiga. Up to now, the task
of porting OpenGL directly from native Amiga drawing routines seemed like
a daunting task. However, two important events made this port possible.
First of all, Brian Paul wrote Mesa, the OpenGL software emulator that
can be found on many platforms - except the Amiga and Atari (who cares
about the latter!). This was pretty ironic considering that Mesa was
originally prototyped on an Amiga! The second great event was when
Holger Kruse developed AmiWin, the X11R6 server for the Amiga (definitely
register for this great piece of software) and released a development kit
so one could compile X programs with SAS/C.
Since Mesa had X routines as its primitive drawing operations, this made
a marriage of Mesa and Amiwin feasible. I copied over the sources from
an ftp site, played with the code, wrote some Smakefiles, and voila,
I had OpenGL programs displaying on my Amiga.
Although the speed is nothing to be impressed about, this port can be
potentially useful to those who want to quickly test their code in
wireframe or perhaps learn more about programming with the OpenGL API.
I hope Amiga developers will continue to write excellent software for
their machine, especially more X clients for Amiwin. If you have any
solutions so some of my problems in the porting notes, please send me
some email!
See you around,
Vic.
HOW TO CREATE THE LIBRARIES AND SAMPLE CODE
===========================================
Just run the shell script mklib.amiwin in the mesa directory. This will
make all the libraries and copy them into the mesa/lib directory. If you
don't want to compile everything, just go to the desired directory and
type smake in that directory.
Change any of the variables in the smakefiles as necessary. You will REQUIRE
the Amiwin development kit to compile these libraries since you need X11.LIB
and the shareable X libraries. Some examples require the AmiTCP4.0
net.lib static link library and related header files for unix related
header files and functions like sleep().
HOW TO USE THE MESA LIBRARIES
=============================
Study the Smakefiles in the demos, samples and book directories for the
proper SAS/C options and linkable libraries to use. Basically aux calls
require Mesaaux.LIB, gl calls require MesaGL.LIB, glu calls MesaGLU.LIB,
tk calls Mesatk.LIB. There is a preliminary port of MesaGLUT.LIB toolkit
available in the lib directory with the other Mesa libraries. However,
it seems to cause crashes on some of the sample code. Someone else may want
to attempt a more stable port.
PORTING NOTES TO AMIWIN
=======================
My strategy of porting was to leave as much of the code untouched as
possible. I surrounded any amiga specific changes with
#ifdef AMIWIN ... #endif or #ifndef AMIWIN ... #endif preprocessor
symbols. The code was ported on an Amiga 2000, with Fusion 40 accelerator
and a Picasso II graphics card. The SAS/C 6.56 compiler was used, with
the AmiWin 2.16 X development kit.
All compilations were done for a 68040 CPU with 68882 math coprocessor for
maximum speed. Please edit the smakefile for other compilers.
I wrote smakefiles for the directories I ported. I omitted the Windows
and Widgets directories. The former is for MS Windows and the latter
requires Motif, which is not easily available for the Amiga.
Here are the changes I did per directory:
* mesa
Nov. 25, 1995 v 1.2.4
- added a mklib.amiwin shell script that will make all the libraries and
sample code for Mesa
- created this readme file: readme.AMIGA
* mesa/include
Dec. 1, 1995 v 1.2.5
- added the following to GL/xmesa.h
#ifdef AMIWIN
#include <pragmas/xlib_pragmas.h>
extern struct Library *XLibBase;
#endif
NET CHANGE: xmesa.h
* mesa/src
Nov. 25, 1995 v 1.2.4
- added the necessary pragma calls for X functions to the following:
xmesa1.c, xmesa2.c, xmesa3.c, xfonts.c, glx.c
This prevents undefined symbols errors during the linking phase for
X library calls
- created smakefile
Dec. 1, 1995 v 1.2.5
- removed AMIWIN includes from xmesa1.c, xmesa2.c, xmesa3.c, xfonts.c,
glx.c since they are now defined in include/GL/xmesa.h
NET CHANGE: smakefile
* mesa/src-tk
Nov. 25, 1995 v 1.2.4
- added the necessary pragma calls for X functions to the following:
private.h
- created smakefile
Dec. 1, 1995 v 1.2.5
- removed AMIWIN includes from private.h since it is now defined in
include/GL/xmesa.h
NET CHANGE: smakefile
* mesa/src-glu
Nov. 25, 1995 v 1.2.4
- created smakefile
NET CHANGE: smakefile
* mesa/src-aux
Nov. 25, 1995 v 1.2.4
- added the necessary pragma calls for X functions to the following:
glaux.c
- created smakefile
NET CHANGE: glaux.c, smakefile
* mesa/demos
Nov. 25, 1995 v 1.2.4
- added the necessary pragma calls for X functions to the following:
xdemo.c, glxdemo.c, offset.c
- created smakefile
- put #ifndef AMIWIN ... #endif around sleep() calls in xdemo.c since
they are not part of AmigaDOS.
Dec. 1, 1995 v 1.2.5
- removed AMIWIN defines from xdemo.c, glxdemo.c, offset.c since
already defined in include/GL/xmesa.h
- modified Smakefile to include header and includes from the AmiTCP4.0
net.lib linkable library to provide unix-compatible sys/time.h and
the sleep() function
- removed AMIWIN defines in xdemo.c since sleep() now defined
NET CHANGE: smakefile
* mesa/samples
Nov. 25, 1995 v 1.2.4
- added the necessary pragma calls for X functions to the following:
oglinfo.c
- created smakefile
- put #ifndef AMIWIN ... #endif around sleep() in blendxor.c
- removed olympic from smakefile targets since <sys/time.h> not defined
Dec. 1, 1995 v 1.2.5
- removed AMIWIN defines from oglinfo.c, since already defined in
include/GL/xmesa.h
- modified Smakefile to include header and includes from the AmiTCP4.0
net.lib linkable library to provide unix-compatible sys/time.h and
the sleep() function
- removed AMIWIN defines in blendxor.c for sleep()
- added AMIWIN defines around _MACHTEN_ in olympic.c since xrandom()
functions are not defined in any libraries
- added olympic back into the Smakefile targets
NET CHANGE: smakefile, olympic.c
* mesa/book
Nov. 25, 1995 v 1.2.4
- created smakefile
- removed accpersp and dof from smakefile targets since the SAS/C compile seems to
confuse the near,far variables with near/far memory models.
NET CHANGE: smakefile
* mesa/windows
Dec. 1, 1995 v 1.2.5
- Removed directory to save space since this is only needed for Windows based
machines.

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Mesa / BeOS Information
Introduction
Mesa 3.1 features a new driver for the BeOS. The new driver implements
a clone of the BGLView class. This class, derived from BView, allows
OpenGL rendering into a BeOS window.
Any application which uses the BGLView should be able to use Mesa
instead of Be's OpenGL without changing any code.
Since Be's OpenGL implementation (as of R4) is basically just the
SGI sample implementation, it's pretty slow. You'll see that Mesa
is considerably faster.
Source Code
The source code for the driver is in Mesa-3.1/src/BeOS/GLView.cpp
It's not 100% finished at this time but many GLUT-based demos are
working. No optimizations have been made at this time.
Compiling
Simply cd to the Mesa-3.x directory and type "make beos-r4".
When it finishes the libMesaGL.so and libMesaGLU.so libraries for
BeOS will be in the Mesa-3.x/lib/ directory.
Example Programs
Look in the Mesa-3.x/BeOS/ directory for one or two BGLView demo
programs. They should have been compiled along with the Mesa
library.
GLUT
A version of GLUT 2.5 for BeOS can be found in src-glut.beos/.
The original distribution can be obtained from
http://home.beoscentral.com/jehamby/Glut-3.5-x86.zip
This is a special version of GLUT adapted for the BeOS. I don't
believe Mark Kilgard's normal GLUT distribution includes BeOS
support.
It seems that you have to recompile GLUT with libMesaGL.so instead
of libGL.so in order for everything to work. I'm not sure why.
Special Features
Mesa's implementation of the BGLView class has an extra member
function: CopySubBufferMESA(). It basically works like SwapBuffers()
but it only copies a sub region from the back buffer to the front
buffer. This is a useful optimization for some applications.
If you use this method in your code be sure that you check at runtime
that you're actually using Mesa (with glGetString) so you don't
cause a fatal error when running with Be's OpenGL.
Work Left To Do
Color index mode is not implemented yet.
Reading pixels from the front buffer not implemented yet.
There is also a BGLScreen class in BeOS for full-screen OpenGL
rendering. This should also be implemented for Mesa.
Old BeOS Driver
Mesa 2.6 had an earlier BeOS driver. It was based on Mesa's Off-screen
rendering interface, not BGLView. If you're interested in the older
driver you should get Mesa 2.6.
BeOS and Glide
Mesa 3.0 supported the 3Dfx/Glide library on Beos. Download Mesa 3.0
if interested. Ideally, the 3Dfx/Glide support should be updated to
work with the new Mesa 3.1 BGLView implementation.
The Glide library hasn't been updated for BeOS R4, to my knowledge, as
of February, 1999.
----------------------------------------------------------------------
$Id: README.BEOS,v 1.5 1999/03/03 02:34:04 brianp Exp $

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DirectX 6 Driver for Mesa 3.0
This software is distributed under the terms of the GNU Library
General Public License, see the LICENSE file for details.
What do you need ?
------------------
- A PC with a DirectX 6 video driver installed.
- Mesa 3.0
- The 3Dfx Glide library 2.3 or later for your OS (the 2.4 works fine).
The Voodoo2 requires the Glide library 2.51. The Glide 3.0 is not
compatible with the Glide 2.x so it doesn't work with the current
version of the driver;
- Visual C++ 5.0 is only compiler test but others should be ok with
changes to the makefiles (CFLAGS/LFLAGS).
- DirectX 6 SDK (was a MS download but not sure if still available).
- SoftIce or another debugger that will get DPF's is nice.
Tested on:
----------
Windows 95
Windows 98
Windows NT 5.0 (beta 2)
What is able to do ?
--------------------
- the driver will try and use DirectX to rasterize the OpenGL primitives
that are sent to the driver. The driver will fall back to SW if the rendering
context is too big. The fallback to SW still uses DirectDraw. If the driver
fails to support and operation (accum, stencil, etc) then it will try and get
Mesa to render it in SW. DirectX 6 features that are unsupported by the
installed DirectX 6 driver will be mapped to some other best fit feature.
How to compile:
---------------
These instructions assume you have Visual C++ installed.
You might need to increase you enviroment space. You can do this by
adding the following statement to you config.sys.
shell=C:\COMMAND.COM C:\ /p /e:8198
Next setup you compiler enviroment by running vcvars32.bat in the Visual C++
'bin' directoy.
c:\DevStudio\VC\bin\vcvars32.bat
Modify the D3D makefile to point at your SDK install. Example has the SDK
installed on my 'f' drive in the root.
file: \Mesa-3.0\src\makefile.d3d
SDKROOT=f:\mssdk
Now you can simply make the project. If you look in the makefile you can see
I have some different targets like 'install'.
nmake /f makefile.d3d
FAQ:
----
1) I don't think the driver is using my DirectX driver.
This maybe true as the current version will only select the Primary D3D driver
installed. If you 3D card is the secondary (3dfx) then your out of luck for this
release.
2) The driver seems like its not HW accelerated.
If you have a video card with limited memory then you might want to try and
change your destop resolution to a low setting (640x480x16) so that the 3D part
of the card has more resources. Remeber the driver can't make the card better...
3) Nothing works.
Make sure you have a DirectX '6' driver installed. Check you driver docs for this
info or use the SDK info utilities.
The final 'dll' is named opengl32.dll and is either in the same directory as the
OpenGL program or in your system directory (x:\windows\system or x:\winnt\system32).
Check your destop resolution. Most DirectX 6 drivers will only support 16bit and
32bit color depth. To find out for sure you can check the DirectX Info Viewer in
the SDK.
4) Rendering doesn't look right.
Sometimes this is because the card doesn't support a feature that that is required.
This is usually due to unsupported alpha functions (test/blend) or texture mapping.
Some cards suffer from too small of an alpha channel. The driver does its best to
fallback on unsupported features. This is not to say the driver may not have a bug(s).
5) Textures look bad.
No mipmapping in this release.
Thanks to:
----------
Brian Paul
Leigh McRae (leigh@altsoftware.com)
February 9, 1999

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LibGGI driver for Mesa-3.0
by Uwe Maurer (uwe_maurer@t-online.de)
Introduction
============
[from libggi.txt by Steve Cheng and Hartmut Niemann]
"LibGGI, the dynamic GGI (General Graphics Interface) library is a
flexible drawing library.
It provides an opaque interface to the display's acceleration
functions. It was originally intended to allow user programs to
interface with KGI, the kernel side of the GGI code, but other display
types can be easily used by loading the appropriate "display target"
(e.g. X, memory).
LibGGI consists of a main library (libggi.so) and a multitude of
dynamic drivers. The library then loads the necessary "drivers" for
the requested mode, taking hints from the graphics device if
necessary. LibGGI can also load extension libraries, e.g. to provide
enhanced 2D and 3D functions.
It has been designed after having a look at several existing
libraries, and so far we have found porting to be quite simple from
and to most of them."
----------------------------------------------------------------------------
More information about the GGI project and LibGGI can be
obtained from the GGI website:
www.ggi-project.org
----------------------------------------------------------------------------
Installation
============
- Install LibGGI
- Unpack the Mesa archives
- In the Mesa directory type:
make linux-ggi
su
make linux-ggi-install
exit
- Now you can try some demos.
If they don't work, you can set the GGIMESA_DEBUG
variable to 255 and you will see some information from the
LibGGI-driver.
export GGIMESA_DEBUG=255
GLUT
====
You can change these default values in ggi/ggiglut.c:
#define WIDTH 640
#define HEIGHT 400
#define GRAPHTYPE_RGB GT_16BIT
#define GRAPHTYPE_INDEX GT_8BIT
Options:
-bpp x Set graphic mode with x bits per pixel
-size x y Screen (or window) is x*y pixels
Example:
demos/gears -size 320 200 -bpp 24
Updates
=======
You can find the latest LibGGI-driver and ggiglut on my
homepage:
http://home.t-online.de/home/uwe_maurer/ggimesa.htm
Uwe Maurer - uwe_maurer@t-online.de
LibGGI driver for Mesa-3.0
by Uwe Maurer (uwe_maurer@t-online.de)
Introduction
============
[from libggi.txt by Steve Cheng and Hartmut Niemann]
"LibGGI, the dynamic GGI (General Graphics Interface) library is a
flexible drawing library.
It provides an opaque interface to the display's acceleration
functions. It was originally intended to allow user programs to
interface with KGI, the kernel side of the GGI code, but other display
types can be easily used by loading the appropriate "display target"
(e.g. X, memory).
LibGGI consists of a main library (libggi.so) and a multitude of
dynamic drivers. The library then loads the necessary "drivers" for
the requested mode, taking hints from the graphics device if
necessary. LibGGI can also load extension libraries, e.g. to provide
enhanced 2D and 3D functions.
It has been designed after having a look at several existing
libraries, and so far we have found porting to be quite simple from
and to most of them."
----------------------------------------------------------------------------
More information about the GGI project and LibGGI can be
obtained from the GGI website:
www.ggi-project.org
----------------------------------------------------------------------------
Installation
============
- Install LibGGI
- Unpack the Mesa archives
- In the Mesa directory type:
make linux-ggi
su
make linux-ggi-install
exit
- Now you can try some demos.
If they don't work, you can set the GGIMESA_DEBUG
variable to 255 and you will see some information from the
LibGGI-driver.
export GGIMESA_DEBUG=255
GLUT
====
You can change these default values in ggi/ggiglut.c:
#define WIDTH 640
#define HEIGHT 400
#define GRAPHTYPE_RGB GT_16BIT
#define GRAPHTYPE_INDEX GT_8BIT
Options:
-bpp x Set graphic mode with x bits per pixel
-size x y Screen (or window) is x*y pixels
Example:
demos/gears -size 320 200 -bpp 24
Updates
=======
You can find the latest LibGGI-driver and ggiglut on my
homepage:
http://home.t-online.de/home/uwe_maurer/ggimesa.htm
Uwe Maurer - uwe_maurer@t-online.de

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Mesa 3.0 for LynxOS builds in the following way:
make lynxos
This will build all the libraries and demo applications. You should have
around 400 megabytes free for everything since everything is done with
static
libraries.
Before using this make file however, you should perform the following
actions:
0) cd to the Mesa-3.0 directory
1) Copy the GL directory under the include directory to /usr/include.
2) Copy the files in the lib directory to /lib.
3) Make links so that the Mesa libraries look like ordinary OpenGL
libraries
in /lib. This is important for compatibility with other OpenGL apps. This
is done as follows:
cd /lib
ln -s libMesaGL.a libGL.a
ln -s libMesaGLU.a libGLU.a
Mesa 3.0 includes the GLUT (GL Utility Toolkit) by default.
The demo applications are done using this toolkit.
Mesa makefiles for building their apps could be used as well, but the
following one is much more concise. Note that the order of the X libraries
is important to the linker so that all symbols get resolved correctly.
Changing the order may result in having to list a library twice to make
sure all linkages are made correctly.
----cut here for Makefile -----
FILES = your_app.x
SPECIAL_INCLUDES = -I/usr/include/GL
SPECIAL_CFLAGS = -g -ansi -pedantic -funroll-loops -ffast-math -DSHM
SPECIAL_LIBS = -lglut -lGLU -lGL -lm -L/usr/X11/lib -lXext -lXmu -lXi \
-lX11 -lbsd -g
STANDARD_OFILES = $(FILES:.x=.o)
%.o: %.c
gcc -c $(SPECIAL_CFLAGS) $(SPECIAL_INCLUDES) $< -o $@
all: $(STANDARD_OFILES)
gcc -o your_app $(STANDARD_OFILES) $(SPECIAL_LIBS)
----cut here for Makefile-----
I have tested Mesa under LynxOS 3.0 and 3.01. It should build fine under
other
versions as well. Note, however, that LynxOS versions prior to 3.0 are not
binary compatible, so you will have to rebuild from source.
Vik Sohal
vik@lynx.com
January 13, 1999

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August 30, 1998 -- Paul Garceau (pgarceau@teleport.com)
DISCLAIMER: I make this extension to the Mesa 3-D Graphics Library as a service
to the general public. I can, in no way support or make any guarantee that the
EGCS-Mingw32 build or any Gnu-Win32 build will work for your system. The
associated packages and batch files I have included as part of the EGCS-Mingw32
extension are provided "As-is" with out any guarantee of support or functionality
from the author of this EGCS-Mingw32 native windows port of the Mesa 3-D Graphics
Library.
Feel free to modify or change things as you see fit, just remember that
I can't support any modifications you might want to make to the files which I
have included OR the lgpl protected Mesa 3-D Graphics Library.
EGCS-Mingw32 Beta 3.08 Archive Manifest:
mingw32.bat
src/makefile.nt4
src/wmesa.c
src-glu/makefile.nt4
###############
Greetings,
In order to build the Mingw32 set of Mesa 3-D Graphics Library for Beta3.08
it will be necessary for you to use the Dos or Command Prompt that is available
on most of the i86 based MS Windows machines. Also, I believe that this build
will run on Win95, Win98, WinNT4 and WinNT5.
I haven't tested Win95/98 or WinNT5. This build was generated under
WinNT4 with SP3 installed.
This has not been tested under any systems outside of
a WinNT4 Workstation with EGCS-Mingw32 toolchain, v.1.0.2 installed.
EGCS-Mingw32 uses a variation of gcc to handle its build. The Mesa 3-D
Graphics Library build that I have generated is based, in small part, on the
Cygwin32 build and associated makefiles that Stephane Rehel (rehel@worldnet.fr)
defined back in 1997. The EGCS-Mingw32 toolchain is capable of generating
native windows code and, as of the date of this readme, can be obtained from:
http://www.xraylith.wisc.edu/~khan/software/gnu-win32/egcs-mingw32-102.html
Much thanks to the combined efforts of Mumit Khan, Jan-Jaap Vanderhagen
and Colin Peters for making it possible for the EGCS-Mingw32 toolchain to exist.
Installing EGCS-Mingw32 Build Revisions:
To install the makefile and source revisions incorporated with this build
of the Mesa 3-D Graphics Library, you'll have to use a version of winzip. I am
in the process of finding a suitable Win32 compatible tar executable so that if
you don't have winzip, you can still decompress the files into their respective
folders/directories.
a) Move the mingw32.zip file to the top level of the hard drive on your
system.
b) Copy all of the Beta 3.08 src/windows files to the src/ directory.
b) Open the Winzip file
c) Verify that the files will be properly extracted.
d) Extract the files with the Winzip "Overwrite" and "Use Folder Names"
options enabled.
The zip file directory structure extraction defaults to the top level of
the hard drive where the mingw32.zip file exists unless otherwise instructed by
you.
The version of wmesa.c included with the mingw32 archive needs to replace
the current version of the Beta 3.08 wmesa.c file in order for the egcs-mingw32
build to work. This is because the original Win32 stuff assumes that the glut
utilities are to be installed. The Glut utilities are not part of the
egcs-mingw32 build for Beta 3.08.
Build Considerations:
In order to get the build to work, I needed to create a special makefile
for each library which the Mesa 3-D Graphics Library requires since there is no
comparable make-config/config on a native windows platform.
Since I was only creating a few of the possible libraries for
Mesa (gl, glu), I only created the new make files in their respective libraries
src, src-glu). For libMesaaux.a. you will find a makefile for it in the
src-aux directory. libMesatk.a and libglut.a were not ported.
The build itself is a .bat based build and uses Gnu Make,Version 3.76.1 to
process the makefiles noted above. The build must be run from the directory
where the mingw32.bat file is. You can get the binary version of Make 3.76.1
from Jan-Jaap van der Heijden's site in Germany:
http://agnes.dida.physik.uni-essen.de/~janjaap/mingw32/download.html
It was necessary to modify some source code, specifically the source code
in the src-glu directory. I needed to modify nurbs.c, quadric.c and tess.c in
order to get them to work using the EGCS-Mingw32 toolchain.
The original EGCS-Mingw32 Toolchain, is available from:
http://www.xraylith.wisc.edu/~khan/software/gnu-win32/egcs-mingw32-102.html
Running the Build:
Ok, now that we've got the basics out of the way, follows is all you need
to do in order to build the EGCS-Mingw32 version of libMesaGL.a and libMesaGLU.a:
Open your Command Prompt/Dos prompt.
Go to your Mesa-3.0 beta 'root' directory.
This is the same directory that the Mesa mingw32.zip file was
originally stored in if you've installed the Mesa-3.0 beta 3-D
Graphics Library source as outlined in the "readme" file included
with the Mesa-3.0 beta distribution.
At the command line type: mingw32
mingw32 is the .bat file that actually does the build.
Enjoy!
Peace,
Paul G. (pgarceau@teleport.com)

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Mesa 3.0 MITS Information
This software is distributed under the terms of the GNU Library
General Public License, see the LICENSE file for details.
This document is a preliminary introduction to help you get
started. For more detaile information consult the web page.
http://10-dencies.zkm.de/~mesa/
Version 0.1 (Yes it's very alpha code so be warned!)
Contributors:
Emil Briggs (briggs@bucky.physics.ncsu.edu)
David Bucciarelli (tech.hmw@plus.it)
Andreas Schiffler (schiffler@zkm.de)
1. Requirements:
Mesa 3.0.
An SMP capable machine running Linux 2.x
libpthread installed on your machine.
2. What does MITS stand for?
MITS stands for Mesa Internal Threading System. By adding
internal threading to Mesa it should be possible to improve
performance of OpenGL applications on SMP machines.
3. Do applications have to be recoded to take advantage of MITS?
No. The threading is internal to Mesa and transparent to
applications.
4. Will all applications benefit from the current implementation of MITS?
No. This implementation splits the processing of the vertex buffer
over two threads. There is a certain amount of overhead involved
with the thread synchronization and if there is not enough work
to be done the extra overhead outweighs any speedup from using
dual processors. You will not for example see any speedup when
running Quake because it uses GL_POLYGON and there is only one
polygon for each vertex buffer processed. Test results on a
dual 200 Mhz. Pentium Pro system show that one needs around
100-200 vertices in the vertex buffer before any there is any
appreciable benefit from the threading.
5. Are there any parameters that I can tune to try to improve performance.
Yes. You can try to vary the size of the vertex buffer which is
define in VB_MAX located in the file src/vb.h from your top level
Mesa distribution. The number needs to be a multiple of 12 and
the optimum value will probably depend on the capabilities of
your machine and the particular application you are running.
6. Are there any ways I can modify the application to improve its
performance with the MITS?
Yes. Try to use as many vertices between each Begin/End pair
as possbile. This will reduce the thread synchronization
overhead.
7. What sort of speedups can I expect?
On some benchmarks performance gains of up to 30% have been
observerd. Others may see no gain at all and in a few rare
cases even some degradation.
8. What still needs to be done?
Lots of testing and benchmarking.
A portable implementation that works within the Mesa thread API.
Threading of additional areas of Mesa to improve performance
even more.
Installation:
1. This assumes that you already have a working Mesa 3.0 installation
from source.
2. Place the tarball MITS.tar.gz in your top level Mesa directory.
3. Unzip it and untar it. It will replace the following files in
your Mesa source tree so back them up if you want to save them.
README.MITS
Make-config
Makefile
mklib.glide
src/vbxform.c
src/vb.h
4. Rebuild Mesa using the command
make linux-386-glide-mits

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The NeXT support has now been incorporated into the OpenStep support.
You can build NeXT libraries simply by typing "make next", though before
linking they will need to be ranlib'd by hand. For more information see
the README.OpenStep file, together with the README files in OpenStep/Old_Demos.
-Pete French. (pete@ohm.york.ac.uk) 28/5/1998

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README for port of Mesa 3.x to XFree86 on OS/2 (X/2)
(as of 19990514)
Contents:
1) Binary release
2) Building from sources
3) History
4) Todo
5) Mesa Home Page
1) Binary release
Though the Mesa sources should build in a quite reasonable time even on
a 585 class machine a binary relase is available (check topic 4) for an URL)
This package includes:
- lib/MesaGL.dll, MesaGL.a
- lib/MesaGLU.dll, MesaGLU.a
- lib/glut.dll, glut.a
- include/GL/*.h
Installing this in your XFree86 tree will enable you to build and
run all applications compatible with Mesa (and the current DLL
interface, of course ;-)
As usual the OMF-style libraries can be created using emxomf.
(e.g. "emxomf foo.a" creates the foo.lib omf-style library).
The static libraries are rarely used and you have to rebuild
Mesa to get them. They're a supported target, so you get
them in a straightforward way (see below).
The testing of these libraries was limited to the supplied
demos/examples and a quite small number of third-party apps.
No warranty ... as usual ... ;-)
2) Instructions to build Mesa 3.x for XFree86/OS2 from sources:
Except the official Mesa source distribution you need:
- a recent version of XFree86 (3.3.x or above) including
the programming libraries
- EMX 0.9c (0.9d might work, never checked)
- GNU make
- REXX (!)
The creation of the DLLs as well as of the static libraries
(if you want to have them) is handled in "mklib-emx.cmd",
a small REXX script. Perhaps not the best idea, but this
way it fits best in the scheme used to build libraries
on all platforms in Mesa 3.x.
To actually build the libraries and demos, check mklib-emx.cmd
and modify it as desired. Then type
make os2-x11
and wait for completion ;-)
3) History
Initially Darren Abbott (abbott@hiwaay.net) ported Mesa versions 2.x
to XFree86 OS/2. This port might still be available from
http://fly.HiWAAY.net/~abbott/xfree86-os2/xfree86.html
The current port picked up things during the beta test for 3.0.
No major changes in the source were done. The build mechanism under OS/2
has been made very similar to other platforms (if you treat mklib-emx.cmd
as a "black box").
Advantage is that X/2 is now a valid target and all files are
integrated in the official source distribution.
Disadvantage is that this port (i.e. the DLLs' interface itself) is
definitly NOT COMPATIBLE to those of version 2.x.
It's uncertain whether this would be at all possible but since there
a _very_ few those apps it's not worth to find out anyway.
Also some libs (MesaTK, MesaAUX) are withdrawn from the Mesa distribution,
and accordingly from the OS/2 port.
4) Todo
By now binary compatiblity is ensured by using the function names
as entry points instead of ordinals. This might cost performance and
is subject to change in future. In addition the supplied X86 assembler
source is not used yet.
5) Mesa Home Page
You can get the source code and more information about Mesa from
http://www.mesa3d.org/
The OS/2 ports should be available from
http://r350.ee.ntu.edu.tw/~hcchu/os2/ports
--
Alexander Mai
st002279@hrzpub.tu-darmstadt.de

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This is a port of the GL and GLU libraries to NeXT/Apple object
orientated systems. As these systems have their own window handling
systems we simply use the offscreen rendering capability of Mesa
to generate bitmaps which may then be displayed by the application
with a View as required. Example pieces of code may be found in the
OpenStep directory.
Sadly there are now a proliferation of different system that we need to
support compilation for: The original NextStep system, The OpenStep
system, the Rhapsody/Mac OS X system and also the windows implementations
of the latter two systems. This version of the code has been compiled and
tested under the following architectures:
NextStep 3.3
OpenStep 4.2
Rhapsody DR2
WebObjects for NT 3.5
WebObjects for NT 4.0
All tests were done with Intel processors. Feedback on other systems would,
however, be appreciated !
On UNIX systems simply type "make openstep". Under Windows systems
with WebObjects run the "win32-openstep.sh" script from within the Bourne
shell provided with the development environment. In both cases this will
build the libraries and place them into the "lib" directory. Some examples
may be found in the OpenStep directory showing how to use the code in an
actual application (MesaView) as well as some command line demos.
The CC variable may be specified on the command line for doing such things
as building FFAT libraries or using alternative compilers to the standard 'cc'
e.g. make CC='cc -arch m68k -arch i386' openstep" will build the libraries
with both intel and motorola architectures.
-Pete French. (pete@ohm.york.ac.uk) 7/6/1999

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Info on using Mesa 3.0 with Linux Quake I and Quake II
Disclaimer
----------
I am _not_ a Quake expert by any means. I pretty much only run it to
test Mesa. There have been a lot of questions about Linux Quake and
Mesa so I'm trying to provide some useful info here. If this file
doesn't help you then you should look elsewhere for help. The Mesa
mailing list or the news://news.3dfx.com/3dfx.linux.glide newsgroup
might be good.
Again, all the information I have is in this file. Please don't email
me with questions.
If you have information to contribute to this file please send it to
me at brianp@elastic.avid.com
Linux Quake
-----------
You can get Linux Quake from http://www.idsoftware.com/
Quake I and II for Linux were tested with, and include, Mesa 2.6. You
shouldn't have too many problems if you simply follow the instructions
in the Quake distribution.
RedHat 5.0 Linux problems
-------------------------
RedHat Linux 5.x uses the GNU C library ("glibc" or "libc6") whereas
previous RedHat and other Linux distributions use "libc5" for its
runtime C library.
Linux Quake I and II were compiled for libc5. If you compile Mesa
on a RedHat 5.x system the resulting libMesaGL.so file will not work
with Linux Quake because of the different C runtime libraries.
The symptom of this is a segmentation fault soon after starting Quake.
If you want to use a newer version of Mesa (like 3.x) with Quake on
RedHat 5.x then read on.
The solution to the C library problem is to force Mesa to use libc5.
libc5 is in /usr/i486-linux-libc5/lib on RedHat 5.x systems.
Emil Briggs (briggs@tick.physics.ncsu.edu) nicely gave me the following
info:
> I only know what works on a RedHat 5.0 distribution. RH5 includes
> a full set of libraries for both libc5 and glibc. The loader ld.so
> uses the libc5 libraries in /usr/i486-linux-libc5/lib for programs
> linked against libc5 while it uses the glibc libraries in /lib and
> /usr/lib for programs linked against glibc.
>
> Anyway I changed line 41 of mklib.glide to
> GLIDELIBS="-L/usr/local/glide/lib -lglide2x -L/usr/i486-linux-libc5/lib"
>
> And I started quake2 up with a script like this
> #!/bin/csh
> setenv LD_LIBRARY_PATH /usr/i486-linux-libc5/lib
> setenv MESA_GLX_FX f
> ./quake2 +set vid_ref gl
> kbd_mode -a
> reset
I've already patched the mklib.glide file. You'll have to start Quake
with the script shown above though.
**********************
Daryll Strauss writes:
Here's my thoughts on the problem. On a RH 5.x system, you can NOT build
a libc5 executable or library. Red Hat just doesn't include the right
stuff to do it.
Since Quake is a libc5 based application, you are in trouble. You need
libc5 libraries.
What can you do about it? Well there's a package called gcc5 that does
MOST of the right stuff to compile with libc5. (It brings back older
header files, makes appropriate symbolic links for libraries, and sets
up the compiler to use the correct directories) You can find gcc5 here:
ftp://ecg.mit.edu/pub/linux/gcc5-1.0-1.i386.rpm
No, this isn't quite enough. There are still a few tricks to getting
Mesa to compile as a libc5 application. First you have to make sure that
every compile uses gcc5 instead of gcc. Second, in some cases the link
line actually lists -L/usr/lib which breaks gcc5 (because it forces you
to use the glibc version of things)
If you get all the stuff correctly compiled with gcc5 it should work.
I've run Mesa 3.0B6 and its demos in a window with my Rush on a Red Hat
5.1 system. It is a big hassle, but it can be done. I've only made Quake
segfault, but I think that's from my libRush using the wrong libc.
Yes, mixing libc5 and glibc is a major pain. I've been working to get
all my libraries compiling correctly with this setup. Someone should
make an RPM out of it and feed changes back to Brian once they get it
all working. If no one else has done so by the time I get the rest of my
stuff straightened out, I'll try to do it myself.
- |Daryll
*********************
David Bucciarelli (tech.hmw@plus.it) writes:
I'm using the Mesa-3.0beta7 and the RedHat 5.1 and QuakeII is
working fine for me. I had only to make a small change to the
Mesa-3.0/mklib.glide file, from:
GLIDELIBS="-L/usr/local/glide/lib -lglide2x
-L/usr/i486-linux-libc5/lib -lm"
to:
GLIDELIBS="-L/usr/i486-linux-libc5/lib -lglide2x"
and to make two symbolic links:
[david@localhost Mesa]$ ln -s libMesaGL.so libMesaGL.so.2
[david@localhost Mesa]$ ln -s libMesaGLU.so libMesaGLU.so.2
I'm using the Daryll's Linux glide rpm for the Voodoo2 and glibc (it
includes also the Glide for the libc5). I'm not using the /dev/3Dfx and
running QuakeII as root with the following env. var:
export
LD_LIBRARY_PATH=/dsk1/home/david/src/gl/Mesa/lib:/usr/i486-linux-libc5/lib
I think that all problems are related to the glibc, Quake will never
work if you get the following output:
[david@localhost Mesa]$ ldd lib/libMesaGL.so
libglide2x.so => /usr/lib/libglide2x.so (0x400f8000)
libm.so.6 => /lib/libm.so.6 (0x40244000)
libc.so.6 => /lib/libc.so.6 (0x4025d000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x00000000)
You must get the following outputs:
[david@localhost Mesa]# ldd lib/libMesaGL.so
libglide2x.so => /usr/i486-linux-libc5/lib/libglide2x.so
(0x400f3000)
[root@localhost quake2]# ldd quake2
libdl.so.1 => /lib/libdl.so.1 (0x40005000)
libm.so.5 => /usr/i486-linux-libc5/lib/libm.so.5 (0x40008000)
libc.so.5 => /usr/i486-linux-libc5/lib/libc.so.5 (0x40010000)
[root@localhost quake2]# ldd ref_gl.so
libMesaGL.so.2 =>
/dsk1/home/david/src/gl/Mesa/lib/libMesaGL.so.2 (0x400eb000)
libglide2x.so => /usr/i486-linux-libc5/lib/libglide2x.so
(0x401d9000)
libX11.so.6 => /usr/i486-linux-libc5/lib/libX11.so.6
(0x40324000)
libXext.so.6 => /usr/i486-linux-libc5/lib/libXext.so.6
(0x403b7000)
libvga.so.1 => /usr/i486-linux-libc5/lib/libvga.so.1
(0x403c1000)
libm.so.5 => /usr/i486-linux-libc5/lib/libm.so.5 (0x403f5000)
libc.so.5 => /usr/i486-linux-libc5/lib/libc.so.5 (0x403fd000)
***********************
Steve Davies (steve@one47.demon.co.uk) writes:
Try using:
export LD_LIBRARY_PATH=/usr/i486-linux-libc5/lib
./quake2 +set vid_ref gl
to start the game... Works for me, but assumes that you have the
compatability libc5 RPMs installed.
***************************
WWW resources - you may find additional Linux Quake help at these URLs:
http://quake.medina.net/howto
http://webpages.mr.net/bobz
http://www.linuxgames.com/quake2/
----------------------------------------------------------------------
$Id: README.QUAKE,v 1.3 1998/08/23 15:26:26 brianp Exp $

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NOTE: this information is obsolete for Mesa 3.1. Due to the big
changes in the Mesa code, the threads support is out of date.
Someone will have to review/update it.
Mesa Threads README
-------------------
Mesa 2.6 is the starting point for an effort to make Mesa
safe in multithreaded applications. The files src/mthreads.c and
src/mthreads.h provide a platform independent threads API which Mesa
uses internally to provide thread-safe operation. At present the mthreads
code supports three thread APIS:
1) POSIX threads (aka pthreads).
2) Solaris / Unix International threads.
3) Win32 threads (Win 95/NT).
Here's the current list of targets which enable multithreaded handling
in Mesa:
linux-386-pthread for Linux w/ Intel assembly and linuxthreads
sunos5-thread for Suns with SunOS 5.x, using Solaris threads
sunos5-pthread for Suns with SunOS 5.[56] using POSIX threads
sunos5-gcc-thread for Suns with SunOS 5.x and GCC, using Solaris threads
sunos5-gcc-pthread for Suns with SunOS 5.[56] and GCC, using POSIX threads
In order to use Mesa with a multithreaded application, Mesa must be compiled
using one of the thread-enabled configurations. In cases where a platform
supports multiple APIs which are acceptable to Mesa, Mesa must be built
with the same threads API as the application in order for things to work
properly. For example, Solaris >= 2.5 support both POSIX threads and
Sun's own threads API. In order to guarantee proper operation, it is
necessary for both Mesa and application code to use the same threads API.
So, if your application uses Sun's thread API, then you should build Mesa
using one of the targets for Sun threads.
Since this effort is still very much a work in progress, not all
aspects of Mesa are thread safe. As of this release (Mesa 2.6) only the
osmesa drivers have been made MT-safe. As work continues, other drivers
such as the X11 drivers will also incorporate MT-safe features.
The mtdemos directory contains some example programs which use
multiple threads to render to osmesa rendering context(s).
Linux users should be aware that there exist many different POSIX
threads packages. The best solution is the linuxthreads package
(http://pauillac.inria.fr/~xleroy/linuxthreads/) as this package is the
only one that really supports multiprocessor machines (AFAIK). See
http://pauillac.inria.fr/~xleroy/linuxthreads/README for further
information about the usage of linuxthreads.
If you are interested in helping develop MT-safe Mesa, please send email
to j.stone@acm.org and poliwoda@volumegraphics.com who are the two most
directly involved in this effort currently. Similarly, if you have problems
using the MT-safe builds of Mesa, please send us comments/bugs etc.
Future versions of Mesa will include more extensive documentation related
to multithreading. This is the first release of our work, so please bear
with us.
Regards,
John Stone -- j.stone@acm.org johns@cs.umr.edu
Christoph Poliwoda -- poliwoda@volumegraphics.com

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@@ -1,13 +0,0 @@
The software may implement third party technologies (e.g. third party
libraries) that are not licensed to you by AMD and for which you may need
to obtain licenses from other parties. Unless explicitly stated otherwise,
these third party technologies are not licensed hereunder. Such third
party technologies include, but are not limited, to H.264, MPEG-2, MPEG-4,
AVC, and VC-1.
For MPEG-2 Encoding Products ANY USE OF THIS PRODUCT IN ANY MANNER OTHER
THAN PERSONAL USE THAT COMPLIES WITH THE MPEG-2 STANDARD FOR ENCODING VIDEO
INFORMATION FOR PACKAGED MEDIA IS EXPRESSLY PROHIBITED WITHOUT A LICENSE
UNDER APPLICABLE PATENTS IN THE MPEG-2 PATENT PORTFOLIO, WHICH LICENSES IS
AVAILABLE FROM MPEG LA, LLC, 6312 S. Fiddlers Green Circle, Suite 400E,
Greenwood Village, Colorado 80111 U.S.A.

28
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VMS support contributed by Jouk Jansen (joukj@hrem.stm.tudelft.nl)
The latest version was tested on a VMSAlpha7.2 system using DECC6.0, but
probably also works for other versions.
At the moment only the libraries LIBMESGL.EXE/LIBMESGL.OLB,
LIBMESAGLU.EXE/LIBMESAGLU.OLB and LIBGLUT.EXE/LIBGLUT.OLB and the demos of the
directory [.DEMOS] can be build.
However, feel free to create the missing "decrip.mms-files" in the other
directories.
The make files were tested
using the DIGITAL make utility called MMS. There is also a public domain
clone available (MMK) and I think, but it is not tested, that this
utility will give (hardly) any problem.
To make everything just type MMS (or MMK) in the main directory of
mesagl. For MMS the deafult makefile is called descrip.mms, and
that is what I have called it. I included alse some config files,
all having mms somewhere in the name which all the makefiles need
(just as your unix makefiles).
On Alpha platforms at default a sharable images for the libraries are created.
To get a static library make it by typing MMS/MACRO=(NOSHARE=1).
On VAX platforms only static libraries can be build.

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@@ -1,70 +1,606 @@
File: docs/README.WIN32
Last updated: 21 June 2013
Quick Start
----- -----
Windows drivers are build with SCons. Makefiles or Visual Studio projects are
no longer shipped or supported.
Run
scons osmesa mesagdi
to build classic mesa Windows GDI drivers; or
scons libgl-gdi
to build gallium based GDI driver.
This will work both with MSVS or Mingw.
Windows Drivers
------- -------
At this time, only the gallium GDI driver is known to work.
Source code also exists in the tree for other drivers in
src/mesa/drivers/windows, but the status of this code is unknown.
Recipe
------
Building on windows requires several open-source packages. These are
steps that work as of this writing.
1) install python 2.7
2) install scons (latest)
3) install mingw, flex, and bison
4) install libxml2 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs
get libxml2-python-2.9.1.win-amd64-py2.7.exe
5) install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs
get pywin32-218.4.win-amd64-py2.7.exe
6) install git
7) download mesa from git
see http://www.mesa3d.org/repository.html
8) run scons
General
-------
After building, you can copy the above DLL files to a place in your
PATH such as $SystemRoot/SYSTEM32. If you don't like putting things
in a system directory, place them in the same directory as the
executable(s). Be careful about accidentially overwriting files of
the same name in the SYSTEM32 directory.
The DLL files are built so that the external entry points use the
stdcall calling convention.
Static LIB files are not built. The LIB files that are built with are
the linker import files associated with the DLL files.
The si-glu sources are used to build the GLU libs. This was done
mainly to get the better tessellator code.
If you have a Windows-related build problem or question, please post
to the mesa-dev or mesa-users list.
Mesa/Readme.win32
Last Updated: Friday, July 9th, 1999 - tjump@tertius.com
*** What's New
- Updated for Mesa 3.1beta2/CVS.
- DevStudio projects suspended for compatability reasons: projects modified
by DevStudio 6 are not compatible with DevStudio 5.
- Build environment change: The Glide SDK is no longer assumed to be in
the global INCLUDE/LIB environment vars, it is required that you set the
value 'GLIDE2X' as either an environment variable pointing to your Glide
SDK install directory or that you configure that as a build option to
nmake.exe when building fxmesagl32. Examples:
nmake /f nmake.mak GLIDE2X=g:\sdk\glide2x fxmesagl32
<or>
nmake /f nmake.mak GLIDE2X=g:\sdk\glide2x allfx
<or>
nmake /f nmake.mak GLIDE2X=g:\sdk\glide2x progs.3dfx.demos
The DevStudio workspace files for 3Dfx OpenGL require the definition of
GLIDE2SDK as an environment variable pointing to where your copy of the
Glide SDK has been installed. Adding this to your AUTOEXEC.BAT would do
so (change the directories to match):
SET GLIDE2SDK=G:\SDK\GLIDE2X
*** Legalese
These build files are provided as-is and are submitted to be included with
the "Mesa 3-D Graphics Library" package as (currently) maintained by Brian
Paul. These project build files are free software; you can redistribute it
and/or modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
These project files are distributed in the hope that they will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library
General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*** Maintenance Responsiblity and Technical Support
While these files are now part of the Mesa core distribution please do NOT
contact Mr. Paul for help with them if you encounter problems as he can't
help you (currently). I will, however, attempt my straightforward best in
assisting anyone with using these files on their system. I can NOT
guarantee instant responses owing to other responsiblities, but I do try
dang hard to answer any mail w/in 24 hours. I may be contacted at the
above email address for the forseeable future.
-Ted
mailto://tjump@tertius.com
http://www.tertius.com/tjump
*** General Information
These build files facilitate convenient building of many variants of Mesa,
both as static link libraries (including mesaglu) and as dynamic link
libraries that in some cases may be used as "drop-in" replacements for
OpenGL32.DLL on both Windows95 and Windows NT.
The construction of the Win32 command-line build files and projects has
been something of a pet project of mine, and is based upon my own
"standard" Win32 build environment as supplied by the "nmake.mif" file.
They have been tested under Windows95 OSR2, Windows NT 4.0SP3, and Windows
NT 5.0 beta 1. The libraries that they generated have been tested (via the
demo programs) in a *limited* fashion on the above three systems, including
the 3Dfx versions.
The reason I went with command-line build environment instead of the more
convenient IDE-based project files is for two reasons: 1. These appear to
have some amount of portability between versions (the nmake syntax hasn't
changed much since Microsoft C 7.0) while the IDE project files seem to
change drastically each version. and 2. These are readable with any ascii
editor and such are better self-documentation of the file relationships for
more people such that it will facilitate supporting other Win32 compilers.
While these files only deal with building for x86 targeted code it *should*
be possible to add the necessary logic to them to build for the other MSVC
supported CPU targets, I simply have no hardware to test them on nor the
alternative compilers to build with.
*** Prerequisites for use
1. You must have a 32-bit Microsoft compiler installed. I have tested
this with Visual C 5.0 (SP3) and Visual C 4.2, but with minor
(possibly no) modification to the nmake.mak and nmake.mif files this
sequence should work on Visual C 2.0 also. The workspace files
(mesalib.dsw and mesademos-*.dsw) and their included project files
(*.dsp) are specific to the DevStudio IDE - I have made no attempt at
building a VC4 IDE project set as I do not use that any more. Note
that the VC workspace files NO LONGER use NORE are dependant upon the
nmake.mak and nmake.mif files for construction of definition (*.DEF)
and resource (*.RC) files.
*** Visual C 4.x Users Warning ****
Note that early editions of VC4 do NOT have header files current enough
for use building this code base. If you are using VC4 you will either need
to get an update to version 4.2 *or* you may download the Platform SDK
directly from Microsoft's web site (www.microsoft.com) and update your
build environment that way.
*** Visual C 4.x Users Warning ****
2. You must have the PATH, INCLUDE, and LIB environment variables set
properly. With VC5 you can easily get this by executing the VCVARS32.BAT
file that was created for you upon installation. It is found in the
DevStudio\VC\BIN directory, wherever you installed DevStudio. VC4 provides
a similar batch file in it's BIN directory also.
3. (optional) If you're going to build for 3Dfx/Voodoo you will need to
have previously installed the Glide SDK version 2.3 or later, if I
recall. This may be retrieved from www.3dfx.com for no money and some
download time. ;-) These build files assume that you have the Glide SDK
added to the respective environment variables (LIB and INCLUDE).
4. (optional) If you're going to build for S3/Virge you will need the S3
Developers Toolkit which may be downloaded from www.s3.com for the price of
registering on-line and some time. NOTE: I can build the s3mesa.dll file to
completion, however the compilation of s3mesa.c currently generates a large
amount of compiler warnings and between that and the fact that I can not at
all test it I can make no claims to it's ability to execute. Again, like
the 3Dfx version before this, these build files assume you have the S3Dtk H
and LIB files in the path of their respective environment variables.
Note 2: As of Mesa3.0beta6 I have build files, both command-line and IDE,
which should be able to build the s3mesa code base if it weren't for updates
being required in the S3 DD code support (Mesa-3.0/src/s3 directory).
I advise putting any include and lib files for secondary toolkits (Glide,
S3Tk, whatever) in their respective environment variables *before* the
Microsoft-assigned default values.
*** FAQ: Frequenty Asked Questions and Other Important Information ***
- When running the 3Dfx demos under Windows NT, they crash on exit, what's
up?
This is apparently a problem in Glide itself. The workaround is to go to
your C:\WINNT\SYSTEM32 directory and rename the file FXOEM2X.DLL to
FXOEM2X.DL_ to prevent Glide from loading and initializing it upon
startup. This is known to be an issue with cards that do not have "TV
out" and is known to cause crashes on Diamond Monster II 8M and 3Dfx
Reference boards, all using 3Dfx Reference Drivers version 2.53. Other
hardware/driver combinations will also likely exhibit this behavior.
- I'm having a problem building Mesa for static library linking.
This was caused by some incomplete testing on my part, and a fix is now
available in the form of an add-on to the base Mesa 3.0 release. The
file to get is:
via FTP download from: iris.ssec.wisc.edu
you want to go here: /pub/Mesa/patches_to_3.0/
you want to get file: Mesa-3.0-w32-static-fixes.tar.gz
This required a minor addition to INCLUDE/GL for a clean solution, the
file "include/gl/mesa_wgl.h" is automatically included by
"include/gl/gl.h" when a Win32 non-DLL build is in progress to provide
prototypes for the various wgl functions.
The only remaining hitch in this setup is that the 3Dfx build is not yet
running as a static build, because of problems with conflicts in
existance of the various GDI functions like ChoosePixelFormat,
etc. *sigh*
Anyway, the "allstatic" target now works as expected and builds all
book/sample/demos programs to boot. ;^)
- How do I get fxMesa to render in a window on the desktop instead of only
full-screen?
Use the Microsoft Windows fxMesa-in-a-window hack!
Seriously, if you want fxMesaGL to render using the 3Dfx Voodoo1 or
Voodoo2 hardware into a window on the desktop then all you need to do is
set the MESA_WGL_FX environment variable to anything other than
"fullscreen" and it will render into a window. If you wish to go
fullscreen then you only need to NOT have the environment variable, or
have it set to "fullscreen". You may also switch at runtime between
fullscreen-mode and windowed by pressing ALT-ENTER on the keyboard
(unless the application using Mesa does something with those keystrokes,
of course).
As of 8/13/98 this should be running a LOT better for more people as a
low-compatability item was cleaned up which prevented it from working on
many (most?) display drivers under Windows 9x.
- I have my 3Dfx card hooked to it's own monitor and I want the output to
stay on even if I switch to another program, is this possible?
If the Glide environment variable SST_DUALHEAD is set to '1' then fxMesa
will never disable the Voodoo output on a Voodoo1 or Voodoo2 display
regardless of whether the fxMesa application is "current" or not. This
works regardless of whether it's rendering using the window hack
mentioned above or not.
- I want to run the Mesa demos on my Intel740 card using it's own OpenGL
acceleration, how do I do this?
Build GLUT standalone for use with system OpenGL and GLU drivers!
The Command-line project supports building all test/demo programs against
these drivers also! This allows you full use of GLUT on Windows using
hardware accelerated OpenGL. Wheee! This includes the "3dfx/demos"
directory of which only two programs will not run on "standard"
opengl. Note that there are a few of the sample programs which will NOT
work without Mesa as they directly call into Mesa instead of using the
extension mechanism.
*** Included programs that exhibit unfortunate or bad behavior
- demos/bounce - doesn't run on high-colors screens? It's requesting an
INDEX display from GLUT and that fails on my true-color desktop. Changing
this to _RGB let's the program work, but it doesn't display
properly. This is probably just an idiosyncracy of my machine though, as
if I test the program using GLUT for System OpenGL on my Intel740 OpenGL
accelerated machine it's just hunky-dory.
- demos/glutfx - runs, but crashes on exit (but not on my Intel740 machine)
- demos/texobj - runs, but crashes on exit if ESC is pressed. Exits cleanly
if the Close box on the window frame is pressed with the mouse. Go figure.
- book/aaindex - doesn't run, can't get pixel format, because it wants an
INDEX display maybe (but is okay on my Intel740 machine)?
- most of the book/* demos don't respond to ESC being pressed.
- 3dfx/demos/* - all demos run, however they all crash on exit. I've traced
this so far as to determine the call it's happening with. The crash comes
from within Glide during the processing of the grGlideShutdown() call, as
in invalid memory reference exception. I'm wondering if this is because
of some state or processing not being completed before the call. Dunno,
but putting grSstIdle() in just before grGlideShutdown() does NOT fix the
problem.
- 3dfx/demos/tunnel2 - does not run on my system even with SLI mode
disabled. Hmmmm, maybe I need to disconnect my Voodoo2 cards?
*** Important Notes and Changing Default values
- The optimizer settings have been manually reworked in both command line
and DevStudio IDE files to hopefully prevent possible irrational code on
the part of the code generator. Formerly, it was configured for "/Ox",
now it is configured for safer handling at a slight potential performance
cost. This may not be required for Visual Studio 6 but I can't test that
(yet).
- These files build with the code targeted for Pentium processors and
8-byte structure padding.
- The IDE-built programs seem to be "happier" in that the command line
build of the 3Dfx demo "fire" will grenade on exit (?). Otherwise pretty
much everything may be built with either interface.
- The currently configured Mesa version is 3.1, and MesaDemos version is
the same. To change this permanently you will need to edit NMAKE.MAK and
change the lines that look like this (they start o/a line 116):
# Currently, Mesa is at rev 3.1 ...
#
!IF "$(MESAVER)" == ""
MESAVER=3.1
!ENDIF
# used in building all of the resource files for the Mesa DLLs
#
!IF "$(MESAFILEVER)" == ""
MESAFILEVER=3,1,0,0
!ENDIF
- Currently the build files are configured to be used from a Win32
directory that is included inside the main Mesa-3.1 heirarchy.
- The build files are smart enough to find the files for the core lib, glu,
glut, and the various demo programs if they are unpacked in the current
Mesa-3.1 heirarchy, like this:
\Mesa-3.1
\Mesa-3.1\src
\Mesa-3.1\src-glu
\Mesa-3.1\src-glut
\Mesa-3.1\Win32
\Mesa-3.1\samples
\Mesa-3.1\demos
\Mesa-3.1\book
\Mesa-3.1\3Dfx\demos
... should work. This arose because my initial build tests for the
demo files were done before MesaDemos 2.6 had been released.
- With the exception of the static link libraries generated by this file
set (mesagl.lib, mesaglu.lib, mesaglut.lib) all DLLs and executables are
built against the "Multithreaded DLL" runtime - this means that they
require MSVCRT.DLL or MSVCRTD.DLL in the path to execute.
** CHANGED 8/11/98 ***
Note also that the demos are all built aginst the "OpenGL32, GLU32, and
GLUT32" and as such they are fairly agnostic wrt: building against Mesa
for CPU-rendering, Mesa-for-3Dfx, Mesa-for-S3, or System OpenGL.
If you want to build them for use on your system and your display card
provides full OpenGL acceleration (Permedia, Intel740, Intergraph,
whatever) then you only need to build GLUT prior to building any of the
demo programs. For convenience, the GLUT project is included in each of
the demo projects Workspace files for the DevStudio IDE builds BUT it is
not automatically built - you still need to build it first manually.
Note that if you have GLUT already installed on your system (gl/glut.h in
yoru INCLUDE path, glut32.lib/glut32d.lib in your LIB path, and the DLL
in your PATH) then you do NOT need to build GLUT prior to the test
programs.
- The 3Dfx build of Mesa has primarily been tested with Quake 2 and it runs
(mostly) fine on my PC (take that for what you want it)...
** CHANGED 8/11/98 ***
There is still something going on that causes Glide to crash on shutdown,
when I run fxMesa under Windows NT, however it does not appear to occur
under Windows 9x on either Voodoo1 or Voodoo2 cards. *sigh*
- I can not test the S3 build as I have no machines available with Virge
based display cards.
- The multithreaded test code is *not* built as it requires pthreads and I
have as of yet spent not time trying to get that running. The latest word
that I saw WRT threading support on win32 was that they are intending to
support it natively within Win32 - so I'm waiting it out until they get
it done.
- Similarly, the 'xdemos' are not currently built because I haven't gotten
around to building the client libs for native win32 and getting it all
setup for use.
*** Output Files
All final output files (DLL/LIB) are placed in the Mesa-3.1/lib directory,
with the exception of the fxMesaGL32 build which is placed in
Mesa-3./lib/FX and the executable images which are placed in their source
directories.
To be able to execute the various test programs, you will need to copy the
requisite DLL files into the same directory as the EXE files. Note that
most of the 3Dfx/demos/* programs WILL run with the non-FX build of Mesa -
just very slowly. The two programs which are hard-linked with the FX build
and will not run without it are "glbpaltx" which uses "gl3DfxSetPaletteEXT"
directly instead of via the extensions mechanism and "tunnel2" which uses
"fxMesaSelectCurrentBoard" API for selecting between multiple 3Dfx cards
installed in one system. Likewise, "paltex" directly uses the
"glColorTableEXT" extension and thus may not run on anything except
Mesa. If these applications used the proper extension mechanism they could
then be used on more than "just" fxMesa to good effect (for example, the
rest of the "3Dfx/demos" run just peachy on the Intel740 card in my test
machine) under WinNT.
Because I'm anal about my computer and it's organization, and I like to
prevent collision between builds, each of the subprojects has their own
intermediate file directory inside .\win32\release (for example, when
building mesagl.lib all of it's intermediate files will be found in
.\win32\release\lib.mesagl). This makes it very easy to cleanup as you
only need to remove .\win32\release.
*** Okay, Enough, how do I build with this stuff already Ted!
Okay, no major calamity here. The basic way to use the project file is to
call it via NMAKE from the command line. The format is:
nmake[.exe] /f nmake.mak [options] [target]
The most likely [options] values you will use may be any combination of the
following:
DEBUG=1 or DEBUG=0
USE_CRTDLL=1 or USE_CRTDLL=0
Note that all three of these options are OFF by default.
The [target] includes but is not limited to the following (for full details
please peruse the NMAKE.MAK and NMAKE.MIF files - but be warned that
NMAKE.MIF is rather large and sometimes hard to follow):
--- convenience targets ---
all - builds everything
libfiles - builds all linking library files
progs - builds all executable images
--- library files, static and dynamic ---
mesagl - static lib build of Mesa core.
mesaglu - static lib build of MesaGLU core.
mesaglut - static lib build of Mesa GLUT core.
mesagl32 - dynamic lib build of Mesa core.
mesaglu32 - dynamic lib build of GLU core, generates
GLU32.DLL and/or GLU32d.DLL.
mesaglut32 - dynamic lib build of GLUT core, generates
GLUT32.DLL and/or GLUT32d.dll.
--- hardware accelerated mesa builds ---
fxmesagl32 - builds Mesa for use on top of the 3Dfx
Glide runtime libs
s3mesagl32 - builds mesa for use on top of the S3
'S3Tk' runtime libs.
--- executable images ---
progs.book - builds all programs in \book directory
progs.demos - builds all programs in \demos directory
progs.samples - builds all programs in \samples directory
These targets generate all of the programs in their respective
directories and link the executables against OpenGL32.DLL,
GLU32.DLL, and GLUT32.DLL (or their debug equivalents).
progs.3dfx.demos - builds all programs in \3dfx\demos directory
This target generates the 3Dfx/Demo executables, linking them
against GLUT32.DLL, GLU32.DLL, OPENGL32.DLL and are thus NOT
hard-bound to using Mesa per-se as you can simply NOT build the
Mesa core and GLU libraries.
--- Microsoft/SGI OpenGL-based GLUT and Demo program builds ----
*** IMPORTANT SAFETY TIP: If you're going to build these variants of
GLUT then DO NOT build any other target libraries in this package
first, OR from the command line run the "nmake /f nmake.mak clean"
command first! This is because generation of the GLUT for SGI
OpenGL target libraries conflicts in naming with the static build
libraries of Mesa and it's supporting GLUT build.
Currently, you may build GLUT as either GLUT32.DLL or GLUT.DLL for
use running against either Microsoft or SGI OpenGL for Window,
respectively. This allows for the general use of GLUT 3.7 on Windows
systems with fully compliant OpenGL.
You can build the GLUT DLL files either with the command line by
issuing either of these commands:
nmake /f nmake.mak glut.sysgl
<or>
nmake /f nmake.mak glut.sgigl
OR by using the DevStudio MesaLib Worksapce build the GLUT_SGIGL or
GLUT_SYSGL projects within the DevStudio IDE.
Unfortunately, the only way to build the test programs against this
build of GLUT is via the command line, and I will NOT be making
duplicate demo program projects for the IDE as it's just not worth it,
sorry.
To build the test programs against either MS or SGI OpenGL, you do so
via either of these two commands:
nmake /f nmake.mak progs.sysgl
<or>
nmake /f nmake.mak progs.sgigl
To use the GLUT-for-system-OpenGL in your own programs, you need to do
three things by way of preparation, after building GLUT of course:
1. Copy include\gl\glut.h to somewhere in your %INCLUDE% path, one
likely candidate location would be in your
"DevStudio\VC\INCLUDE\GL" directory.
2. Copy the linking libraries to somewhere in your %LIB% path, one
likely candidate location would be in your "DevStudio\VC\LIB"
directory. The linking libraries you need to copy are as
follows:
.\Release\GLUT32.LIB
.\Release\GLUT.LIB
.\Debug\GLUT32.LIB
.\Debug\GLUT.LIB
3. Copy the runtime libraries to somewhere in your %PATH%, one
likely candidate location would be in WINDOWS\SYSTEM. the files
that you should copy are as follows:
.\Release\GLUT32.DLL
.\Release\GLUT32.PDB
.\Release\GLUT.DLL
.\Release\GLUT.PDB
.\Debug\GLUT32d.DLL
.\Debug\GLUT32d.PDB
.\Debug\GLUTd.DLL
.\Debug\GLUTd.PDB
Some examples are in order ...
... build all dynamic-link libs using MSVCRT.DLL for C runtime:
nmake /f nmake.mak USE_CRTDLL=1 alldynamic
... To build all library variants and all test and demonstration
programs with the default settings you do this:
nmake /f nmake.mak all
... to build all static link libs and nothing else you do this:
nmake /f nmake.mak allstatic
... to build all non-accelerated dynamic link libs you do this:
nmake /f nmake.mak alldynamic
... to build all 3Dfx targeted dynamic link libs you do this:
nmake /f nmake.mak allaccel
... to build all S3 Virge targetd dynamic link libs you do this:
nmake /f nmake.mak alls3
... to build all libraries, static and dynamic, in all versions
you do this:
nmake /f nmake.mak libfiles
... to subsequently build all demo and test programs you do this:
nmake /f nmake.mak progs
... to cleanup all intermediate files you do this:
nmake /f clean
You get the picture. (I hope) ;^) You may also specify specify
single targets in a convenient fashion. The rule is simple, any of the
above named lib files, static or dynamic, may be built by providing it's
name on the command line as the target. Examples:
... to build only Mesa as OpenGL32.DLL ...
nmake /f nmake.mak opengl32
... to build only Mesa on top of the 3Dfx Glide API ...
nmake /f nmake.mak fxMesaGL32
<or>
nmake /f nmake.mak fxMesaGL
... to build only Mesa on top of the S3 Toolkit ...
nmake /f nmake.mak s3MesaGL32
<or>
nmake /f nmake.mak s3mesaGL
*** Revision history for ./win32 project files
1/18/98 - initial cut submitted and included with core mesa
2/5/98 - fixed internal dependency within nmake.mif upon there being
a $(DEVDIR) variable to make some temporary batch files
dependant upon (thanks to Keven T. McDonnell for finding
that there was this particular bug). I also updated the
build files for 2.6beta6.
2/8/98 - added DevStudio workspace and project files for all lib
files and some test programs. Updated readme.win32.
6/25/98 - initial revision for Mesa 3.0, does not include IDE files,
not everything is running. *sigh*
7/20/98 - Mesa 3.0beta6 rev of all build files, all libs built and
minimally tested, all demo programs built and minimally
tested to within limits of my PC. ;^) Eveything looks
MUCH better now ...
7/30/98 - Minor updates/edits based upon feedback from
Eero Pajarre <epajarre@koti.tpo.fi>. These updates include a fix
to the Mesa-on-3Dfx build such that Quake-II now runs almost
properly on my system. It runs, just *very* slowly and with *no*
textures. Hmmm. Doesn't make any difference whether Quake is set
to use 8-bit textures or not.
8/13/98 - Lots of build cleanups, minor bug fixes in fxwgl.c, and
compatability fix in fxapi.c for in-window rendering using 3Dfx
hardware.
8/26/98 - Final revisions for Mesa 3 release checked
9/22/98 - Fixed static builds for all but fxMesaGL32 and s3MesaGL32 targets
9/29/98 - Reorganized FAQ information and added Added faq entry about Glide
bug under NT (crash on exit) and a workaround.
11/21/98 - Updated files for Mesa 3.1 beta 1
Updated fxMesa window-hack code
Updated fxMesa resolution support to handle 1600x1200 & 1280x1024
7/9/99 - Rev'd for Mesa 3.1 beta 2

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Mesa 3.0 Unix/X11 Information
Installation
============
To compile the library, first type 'make' alone to see the list of system
configurations currently supported. If you see your configuration on the
list, type 'make <config>'. Most popular Unix/X workstations are currently
supported.
The top-level makefile will execute the makefiles in a number of sub-
directories. When finished, the Mesa libraries will be in the Mesa-2.6/lib/
directory. A few GLUT demos in the demos/ directory should be ready to run.
If you also downloaded and unpacked the demos there should be executables
in the "xdemos/", "samples/", and "book/" directories for you to try out.
If you only want to compile the contents of one subdirectory you can 'cd'
to that directory and type 'make <config>' there.
If your system configuration is not listed by 'make', you'll have to modify
the top-level Makefile and Make-config files. There are instructions in
each file.
If you have compilation problems you should try to fix them and return the
patches to the author.
Header and library files:
After you've compiled Mesa and tried the demos I recommend the following
procedure for "installing" Mesa.
Copy the Mesa include/GL directory to /usr/local/include:
cp -r include/GL /usr/local/include
Copy the Mesa library files to /usr/local/lib:
cp lib/* /usr/local/lib
(actually, use "cp -d" on Linux to preserve symbolic links)
Create a few symbolic links so that compiling OpenGL applications is easy:
cd /usr/local/lib
IF USING STATIC (lib*.a) FILES THEN
ln -s libMesaGL.a libGL.a
ln -s libMesaGLU.a libGLU.a
ELSE
ln -s libMesaGL.so libGL.so
ln -s libMesaGLU.so libGLU.so
ENDIF
Xt/Motif widgets:
If you want to use Mesa or OpenGL in your Xt/Motif program you can build
the widgets found in either the widgets-mesa or widgets-sgi directories.
The former were written for Mesa and the later are the original SGI
widgets. Look in those directories for more information.
Notes:
HP users: a Mesa user reports that the HP-UX 10.01 C compiler has
a bug which effects glReadPixels. A patch for the compiler (PHSS_5743) is
available. Otherwise be sure your compiler is version 10.13 or later.
QNX users: if you have problems running the demos try setting the
stack size to 200K or larger with -N200K, for example.
SunOS 5.x users: The X shared memory extension may not work
correctly. If Mesa prints an error message to the effect of "Shared memory
error" then you'll have to append the following three lines to the end of
your /etc/system file then reboot:
set shmsys:shminfo_shmmax = 0x2000000
set shmsys:shminfo_shmmni = 0x1000
set shmsys:shminfo_shmseg = 0x100
Using the library
=================
Configuration options:
The file src/config.h has many parameters which you can adjust such
as maximum number of lights, clipping planes, maximum texture size,
etc. In particular, you may want to change DEPTH_BITS from 16 to 32
if a 16-bit depth buffer isn't precise enough for your application.
Shared libraries:
If you compile shared libraries you may have to set an environment
variable to specify where the Mesa libraries are located. On Linux and
Sun systems for example, set the LD_LIBRARY_PATH variable to include
/your-dir/Mesa-2.6/lib. Otherwise, when you try to run a demo it
may fail with a message saying that one or more libraries couldn't be
found.
Remote display of OpenGL/GLX programs:
As of version 1.2.3, Mesa's header files use the same GLenum and GLUenum
values as SGI's (and most/all other vendor's) OpenGL headers. This means
you can freely mix object files compiled with OpenGL or Mesa headers.
In fact, on systems with dynamic runtime linkers it's possible to dynam-
ically link with Mesa or OpenGL shared libraries at runtime, without
recompiling or relinking anything!
Using IRIX 5.x as an example, you can run SGI's OpenGL demos with the
Mesa shared libraries as follows. Let's assume you're installing Mesa
in /usr/local/Mesa and using the C-shell:
% cd /usr/local/Mesa
% make irix5-dso
% cd lib
% ln -s libMesaGL.so libGL.so
% setenv _RLD_LIST "/usr/local/Mesa/lib/libGL.so:DEFAULT"
% /usr/demos/bin/ideas_ogl // this is a test
You can now run OpenGL executables on almost any X display! There may
be some problems from the fact that Mesa supports many X visual types
that an OpenGL client may not expect (grayscale for example). In this
case the application may abort, print error messages, or just behave
strangely. You may have to experiment with the MESA_RGB_VISUAL envi-
ronment variable.
Xt/Motif Widgets:
Two versions of the Xt/Motif OpenGL drawing area widgets are included:
widgets-sgi/ SGI's stock widgets
widgets-mesa/ Mesa-tuned widgets
Look in those directories for details
Togl:
Togl is an OpenGL/Mesa widget for Tcl/Tk.
See http://www.ssec.wisc.edu/~brianp/Togl.html for more information.
X Display Modes:
Mesa supports RGB(A) rendering into almost any X visual type and depth.
The glXChooseVisual function tries its best to pick an appropriate visual
for the given attribute list. However, if this doesn't suit your needs
you can force Mesa to use any X visual you want (any supported by your
X server that is) by setting the MESA_RGB_VISUAL and MESA_CI_VISUAL
environment variables. When an RGB visual is requested, glXChooseVisual
will first look if the MESA_RGB_VISUAL variable is defined. If so, it
will try to use the specified visual. Similarly, when a color index
visual is requested, glXChooseVisual will look for the MESA_CI_VISUAL
variable.
The format of accepted values is: <visual-class> <depth>
Here are some examples:
using the C-shell:
% setenv MESA_RGB_VISUAL "TrueColor 8" // 8-bit TrueColor
% setenv MESA_CI_VISUAL "PseudoColor 12" // 12-bit PseudoColor
% setenv MESA_RGB_VISUAL "PseudoColor 8" // 8-bit PseudoColor
using the KornShell:
$ export MESA_RGB_VISUAL="TrueColor 8"
$ export MESA_CI_VISUAL="PseudoColor 12"
$ export MESA_RGB_VISUAL="PseudoColor 8"
Double buffering:
Mesa can use either an X Pixmap or XImage as the backbuffer when in
double buffer mode. Using GLX, the default is to use an XImage. The
MESA_BACK_BUFFER environment variable can override this. The valid
values for MESA_BACK_BUFFER are: Pixmap and XImage (only the first
letter is checked, case doesn't matter).
A pixmap is faster when drawing simple lines and polygons while an
XImage is faster when Mesa has to do pixel-by-pixel rendering. If you
need depth buffering the XImage will almost surely be faster. Exper-
iment with the MESA_BACK_BUFFER variable to see which is faster for
your application.
Colormaps:
When using Mesa directly or with GLX, it's up to the application writer
to create a window with an appropriate colormap. The aux, tk, and GLUT
toolkits try to minimize colormap "flashing" by sharing colormaps when
possible. Specifically, if the visual and depth of the window matches
that of the root window, the root window's colormap will be shared by
the Mesa window. Otherwise, a new, private colormap will be allocated.
When sharing the root colormap, Mesa may be unable to allocate the colors
it needs, resulting in poor color quality. This can happen when a
large number of colorcells in the root colormap are already allocated.
To prevent colormap sharing in aux, tk and GLUT, define the environment
variable MESA_PRIVATE_CMAP. The value isn't significant.
Gamma correction:
To compensate for the nonlinear relationship between pixel values
and displayed intensities, there is a gamma correction feature in
Mesa. Some systems, such as Silicon Graphics, support gamma
correction in hardware (man gamma) so you won't need to use Mesa's
gamma facility. Other systems, however, may need gamma adjustment
to produce images which look correct. If in the past you thought
Mesa's images were too dim, read on.
Gamma correction is controlled with the MESA_GAMMA environment
variable. Its value is of the form "Gr Gg Gb" or just "G" where
Gr is the red gamma value, Gg is the green gamma value, Gb is the
blue gamma value and G is one gamma value to use for all three
channels. Each value is a positive real number typically in the
range 1.0 to 2.5. The defaults are all 1.0, effectively disabling
gamma correction. Examples using csh:
% setenv MESA_GAMMA "2.3 2.2 2.4" // separate R,G,B values
% setenv MESA_GAMMA "2.0" // same gamma for R,G,B
The demos/gamma.c program may help you to determine reasonable gamma
value for your display. With correct gamma values, the color intensities
displayed in the top row (drawn by dithering) should nearly match those
in the bottom row (drawn as grays).
Alex De Bruyn reports that gamma values of 1.6, 1.6 and 1.9 work well
on HP displays using the HP-ColorRecovery technology.
Mesa implements gamma correction with a lookup table which translates
a "linear" pixel value to a gamma-corrected pixel value. There is a
small performance penalty. Gamma correction only works in RGB mode.
Also be aware that pixel values read back from the frame buffer will
not be "un-corrected" so glReadPixels may not return the same data
drawn with glDrawPixels.
For more information about gamma correction see:
http://www.inforamp.net/~poynton/notes/colour_and_gamma/GammaFAQ.html
Overlay Planes
Overlay planes in the frame buffer are supported by Mesa but require
hardware and X server support. To determine if your X server has
overlay support you can test for the SERVER_OVERLAY_VISUALS property:
xprop -root | grep SERVER_OVERLAY_VISUALS
HPCR glClear(GL_COLOR_BUFFER_BIT) dithering
If you set the MESA_HPCR_CLEAR environment variable then dithering
will be used when clearing the color buffer. This is only applicable
to HP systems with the HPCR (Color Recovery) system.
Extensions:
The following OpenGL GLX extensions are currently implemented:
GLX_EXT_visual_info - GLX visual and transparent pixel extension
For detailed information about the extensions see www.opengl.org
There are four Mesa-specific GL/GLX extensions at this time.
GLX_MESA_pixmap_colormap
This extension adds the GLX function:
GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
Pixmap pixmap, Colormap cmap )
It is an alternative to the standard glXCreateGLXPixmap() function.
Since Mesa supports RGB rendering into any X visual, not just True-
Color or DirectColor, Mesa needs colormap information to convert RGB
values into pixel values. An X window carries this information but a
pixmap does not. This function associates a colormap to a GLX pixmap.
See the xdemos/glxpixmap.c file for an example of how to use this
extension.
GLX_MESA_release_buffers
Mesa associates a set of ancillary (depth, accumulation, stencil and
alpha) buffers with each X window it draws into. These ancillary
buffers are allocated for each X window the first time the X window
is passed to glXMakeCurrent(). Mesa, however, can't detect when an
X window has been destroyed in order to free the ancillary buffers.
The best it can do is to check for recently destroyed windows whenever
the client calls the glXCreateContext() or glXDestroyContext()
functions. This may not be sufficient in all situations though.
The GLX_MESA_release_buffers extension allows a client to explicitly
deallocate the ancillary buffers by calling glxReleaseBuffersMESA()
just before an X window is destroyed. For example:
#ifdef GLX_MESA_release_buffers
glXReleaseBuffersMESA( dpy, window );
#endif
XDestroyWindow( dpy, window );
This extension is new in Mesa 2.0.
GLX_MESA_copy_sub_buffer
This extension adds the glXCopySubBufferMESA() function. It works
like glXSwapBuffers() but only copies a sub-region of the window
instead of the whole window.
This extension is new in Mesa version 2.6
Summary of X-related environment variables:
MESA_RGB_VISUAL - specifies the X visual and depth for RGB mode (X only)
MESA_CI_VISUAL - specifies the X visual and depth for CI mode (X only)
MESA_BACK_BUFFER - specifies how to implement the back color buffer (X only)
MESA_PRIVATE_CMAP - force aux/tk libraries to use private colormaps (X only)
MESA_GAMMA - gamma correction coefficients (X only)
----------------------------------------------------------------------
$Id: README.X11,v 3.2 1998/10/03 12:48:50 brianp Exp $

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@@ -1,3 +1,4 @@
$Id: VERSIONS,v 1.10 1999/07/30 18:58:30 brianp Exp $
Mesa Version History
@@ -643,872 +644,12 @@ Mesa Version History
- new copyright on core Mesa code
3.1 beta 3 September 17, 1999
3.1 beta 3 August ??, 1999
New:
- optimized glAccum function
- optimized 24bpp rendering in XMesa driver
- GLU 1.2 polygon tessellator
Bug Fixes:
- glGetTexLevelParameter wasn't fully implemented
- glXUseXFont now handles multi-byte fonts
- glIsEnabled(GL_TEXTURE_2D / 3D) returned wrong result
- alpha channel of blending points, lines was sometimes incorrect
Changes:
- New library names: "libGL" instead of "libMesaGL"
- New library numbering: libGL.so.1.2.310
- New library names: libGL.so and libGLU.so
- New subdirectories: docs/ and bin/
- New Makefile-system (autoconf,automake,libtool)
3.1 final December 14, 1999
New:
- added demos/gloss.c
- added xdemos/glxdpyinfo.c
- added GLX_ARB_get_proc_address extension
- rewritten glTexImage code paths (faster, less memory, bug fixes)
Bug Fixes:
- several vertex array bug fixes
- overlapping glCopyPixels with pixel zooming now works
- glXUseXFont() bitmaps were vertically shifted by one pixel
- glCopyPixels with pixel zooming now works
3.2 final April 24, 2000
Bug fixes:
- fixed memcpy bugs in span.c
- fixed missing glEnd problem in demos/tessdemo.c
- fixed bug when clearing 24bpp Ximages
- fixed clipping problem found in Unreal Tournament
- fixed Loki's "ice bug" and "crazy triangles" seen in Heretic2
- fixed Loki's 3dfx RGB vs BGR bug
- fixed Loki's 3dfx smooth/flat shading bug in SoF
Changes:
- updated docs/README file
- use bcopy() optimizations on FreeBSD
- re-enabled the optimized persp_textured_triangle() function
3.2.1 July 19, 2000
Bug fixes:
- gluBuild2DMipmaps() didn't accept GL_BGRA
- Fixed compile/makefile problems on IRIX
- fixed segfault in 3dfx driver when using GL selection/feedback
- no longer cull very, very tiny triangles
- blending w/ drawbuffer==GL_FRONT_BACK caused segfault (sw rendering)
- fixed Motif detection code in widgets-mesa/configure.in
- glColorMaterial and glMaterial updates to emissive and ambient
didn't always work right
- Specular highlights weren't always in the right place
- clipped GL_LINE mode polygons had interior lines appear
- blend term GL_ONE_MINUS_CONSTANT_ALPHA was broken
- GL_NICEST fog didn't always work with flat shading
- glRect commands in display lists were sometimes miscolored
- Line Z offset didn't always work
- fixed texgen normal vector problem (gloss's teapot)
- numerous GL conformance bugs fixed
Changes:
- glColorMask(false, false, false, false) handled better/faster
- reverted to old GLU polygon tessellator, GLU 1.1
- updated Win32 build files
3.3 July 21, 2000
New:
- antialiased triangles now implemented
- GL_EXT_texture_env_add texture mode extension
- GLX 1.3 API
- support for separate draw/read buffers (ie GL_SGI_make_current_read)
- thread-safe API dispath
- improved glxinfo program
- demos/texdown program to measure texture download performance
- glext.h header file
- demos/geartrain program
- GL_EXT_texture_lod_bias extension
- demos/lodbias program
- further optimized glRead/DrawPixels for 16-bit TrueColor X visuals
- GLX_EXT_visual_rating extension (a no-op, however)
- GL_HP_occlusion_test extension (for X and OS/Mesa drivers)
- demos/occlude program
- GL_SGIS_pixel_texture and GL_SGIX_pixel_texture extensions
- demos/pixeltex program
- GL_SGI_color_matrix extension
- GL_SGI_color_table extension
- GL_EXT_histogram extension
- GL_ARB_texture_cube_map extension
- added xdemos/glxheads and xdemos/manywin
- demos/texenv.c demo
- GL_EXT_texture_env_combine extension (by Holger Waechtler)
- Xlib driver is now thread-safe (see xdemos/glthreads)
Bug Fixes:
- various GL conformance failures fixed since 3.2.1
Changes:
- gl.h now uses #defines instead of C enums for all tokens
- glu.h now uses #defines instead of C enums for all tokens
- moved programs from 3Dfx/demos/ into demos/ directory
3.4 November 3, 2000
New:
- optimized glDrawPixels for glPixelZoom(1,-1)
Bug Fixes:
- widgets-mesa/src/*.c files were missing from 3.3 distro
- include/GL/mesa_wgl.h file was missing from 3.3 distro
- fixed some Win32 compile problems
- texture object priorities weren't getting initialized to 1.0
- glAreTexturesResident return value was wrong when using hardware
- glXUseXFont segfaulted when using 3dfx driver (via MESA_GLX_FX)
- glReadPixels with GLushort packed types was broken
- fixed a few bugs in the GL_EXT_texture_env_combine texture code
- glPush/PopAttrib(GL_ENABLE_BIT) mishandled multi-texture enables
- fixed some typos/bugs in the VB code
- glDrawPixels(GL_COLOR_INDEX) to RGB window didn't work
- optimized glDrawPixels paths weren't being used
- per-fragment fog calculation didn't work without a Z buffer
- improved blending accuracy, fixes Glean blendFunc test failures
- glPixelStore(GL_PACK/UNPACK_SKIP_IMAGES) wasn't handled correctly
- glXGetProcAddressARB() didn't always return the right address
- gluBuild[12]DMipmaps() didn't grok the GL_BGR pixel format
- texture matrix changes weren't always detected (GLUT projtex demo)
- fixed random color problem in vertex fog code
- fixed Glide-related bug that let Quake get a 24-bit Z buffer
Changes:
- finished internal support for compressed textures for DRI
3.4.1 February 14, 2001
New:
- fixed some Linux build problems
- fixed some Windows build problems
- GL_EXT_texture_env_dot3 extension (Gareth Hughes)
Bug fixes:
- added RENDER_START/RENDER_FINISH macros for glCopyTexImage in DRI
- various state-update code changes needed for DRI bugs
- disabled pixel transfer ops in glColorTable commands, not needed
- fixed bugs in glCopyConvolutionFilter1D/2D, glGetConvolutionFilter
- updated sources and fixed compile problems in widgets-mesa/
- GLX_PBUFFER enum value was wrong in glx.h
- fixed a glColorMaterial lighting bug
- fixed bad args to Read/WriteStencilSpan in h/w stencil clear function
- glXCopySubBufferMESA() Y position was off by one
- Error checking of glTexSubImage3D() was broken (bug 128775)
- glPopAttrib() didn't restore all derived Mesa state correctly
- Better glReadPixels accuracy for 16bpp color - fixes lots of OpenGL
conformance problems at 16bpp.
- clearing depth buffer with scissoring was broken, would segfault
- OSMesaGetDepthBuffer() returned bad bytesPerValue value
- fixed a line clipping bug (reported by Craig McDaniel)
- fixed RGB color over/underflow bug for very tiny triangles
Known problems:
- NURBS or evaluator surfaces inside display lists don't always work
3.4.2 May 17, 2001
Bug fixes:
- deleting the currently bound texture could cause bad problems
- using fog could result in random vertex alpha values
- AA triangle rendering could touch pixels outside right window bound
- fixed byteswapping problem in clear_32bit_ximage() function
- fixed bugs in wglUseFontBitmapsA(), by Frank Warmerdam
- fixed memory leak in glXUseXFont()
- fragment sampling in AA triangle function was off by 1/2 pixel
- Windows: reading pixels from framebuffer didn't always work
- glConvolutionFilter2D could segfault or cause FP exception
- fixed segfaults in FX and X drivers when using tex unit 1 but not 0
- GL_NAND logicop didn't work right in RGBA mode
- fixed a memory corruption bug in vertex buffer reset code
- clearing the softwara alpha buffer with scissoring was broken
- fixed a few color index mode fog bugs
- fixed some bad assertions in color index mode
- fixed FX line 'stipple' bug #420091
- fixed stencil buffer clear width/height typo
- fixed GL error glitches in gl[Client]ActiveTextureARB()
- fixed Windows compilation problem in texutil.c
- fixed 1/8-pixel AA triangle sampling error
Changes:
- optimized writing mono-colored pixel spans to X pixmaps
- increased max viewport size to 2048 x 2048
3.5 June 21, 2001
New:
- internals of Mesa divided into modular pieces (Keith Whitwell)
- 100% OpenGL 1.2 conformance (passes all conformance tests)
- new AA line algorithm
- GL_EXT_convolution extension
- GL_ARB_imaging subset
- OSMesaCreateContextExt() function
- GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
- GL_MAX_TEXTURE_UNITS_ARB now defaults to eight
- GL_EXT_fog_coord extension (Keith Whitwell)
- GL_EXT_secondary_color extension (Keith Whitwell)
- GL_ARB_texture_env_add extension (same as GL_EXT_texture_env_add)
- GL_SGIX_depth_texture extension
- GL_SGIX_shadow and GL_SGIX_shadow_ambient extensions
- demos/shadowtex.c demo of GL_SGIX_depth_texture and GL_SGIX_shadow
- GL_ARB_texture_env_combine extension
- GL_ARB_texture_env_dot3 extension
- GL_ARB_texture_border_clamp (aka GL_SGIS_texture_border_clamp)
- OSMesaCreateContextExt() function
- libOSMesa.so library, contains the OSMesa driver interface
- GL/glxext.h header file for GLX extensions
- somewhat faster software texturing, fogging, depth testing
- all color-index conformance tests now pass (only 8bpp tested)
- SPARC assembly language TCL optimizations (David Miller)
- GL_SGIS_generate_mipmap extension
Bug Fixes:
- fbiRev and tmuRev were unitialized when using Glide3
- fixed a few color index mode conformance failures; all pass now
- now appling antialiasing coverage to alpha after texturing
- colors weren't getting clamped to [0,1] before color table lookup
- fixed RISC alignment errors caused by COPY_4UBV macro
- drawing wide, flat-shaded lines could cause a segfault
- vertices now snapped to 1/16 pixel to fix rendering of tiny triangles
Changes:
- SGI's Sample Implementation (SI) 1.3 GLU library replaces Mesa GLU
- new libOSMesa.so library, contains the OSMesa driver interface
4.0 October 22, 2001
New:
- Mesa 4.0 implements the OpenGL 1.3 specification
- GL_IBM_rasterpos_clip extension
- GL_EXT_texture_edge_clamp extension (aka GL_SGIS_texture_edge_clamp)
- GL_ARB_texture_mirrored_repeat extension
- WindML UGL driver (Stephane Raimbault)
- added OSMESA_MAX_WIDTH/HEIGHT queries
- attempted compiliation fixes for Solaris 5, 7 and 8
- updated glext.h and glxext.h files
- updated Windows driver (Karl Schultz)
Bug fixes:
- added some missing GLX 1.3 tokens to include/GL/glx.h
- GL_COLOR_MATRIX changes weren't recognized by teximage functions
- glCopyPixels with scale and bias was broken
- glRasterPos with lighting could segfault
- glDeleteTextures could leave a dangling pointer
- Proxy textures for cube maps didn't work
- fixed a number of 16-bit color channel bugs
- fixed a few minor memory leaks
- GLX context sharing was broken in 3.5
- fixed state-update bugs in glPopClientAttrib()
- fixed glDrawRangeElements() bug
- fixed a glPush/PopAttrib() bug related to texture binding
- flat-shaded, textured lines were broken
- fixed a dangling pointer problem in the XMesa code (Chris Burghart)
- lighting didn't always produce the correct alpha value
- fixed 3DNow! code to not read past end of arrays (Andrew Lewycky)
4.0.1 December 17, 2001
New:
- better sub-pixel sample positions for AA triangles (Ray Tice)
- slightly faster blending for (GL_ZERO, GL_ONE) and (GL_ONE, GL_ZERO)
Bug fixes:
- added missing break statements in glGet*() for multisample cases
- fixed uninitialized hash table mutex bug (display lists / texobjs)
- fixed bad teximage error check conditional (bug 476846)
- fixed demos readtex.c compilation problem on Windows (Karl Schultz)
- added missing glGet() query for GL_MAX_TEXTURE_LOD_BIAS_EXT
- silence some compiler warnings (gcc 2.96)
- enable the #define GL_VERSION_1_3 in GL/gl.h
- added GL 1.3 and GLX 1.4 entries to gl_mangle.h and glx_mangle.h
- fixed glu.h typedef problem found with MSDev 6.0
- build libGL.so with -Bsymbolic (fixes bug found with Chromium)
- added missing 'const' to glXGetContextIDEXT() in glxext.h
- fixed a few glXGetProcAddress() errors (texture compression, etc)
- fixed start index bug in compiled vertex arrays (Keith)
- fixed compilation problems in src/SPARC/glapi_sparc.S
- fixed triangle strip "parity" bug found in VTK medical1 demo (Keith)
- use glXGetProcAddressARB in GLUT to avoid extension linking problems
- provoking vertex of flat-shaded, color-index triangles was wrong
- fixed a few display list bugs (GLUT walker, molecule, etc) (Keith)
- glTexParameter didn't flush the vertex buffer (Ray Tice)
- feedback attributes for glDraw/CopyPixels and glBitmap were wrong
- fixed bug in normal length caching (ParaView lighting bug)
- fixed separate_specular color bug found in Chimera (18 Dec 2001)
4.0.2 April 2, 2002
New:
- New DOS (DJGPP) driver written by Daniel Borca
- New driver interface functions for TCL drivers (such as Radeon DRI)
- GL_RENDERER string returns "Mesa Offscreen16" or "Mesa Offscreen32"
if using deep color channels
- latest GL/glext.h and GL/glxext.h headers from SGI
Bug fixes:
- GL_BLEND with non-black texture env color wasn't always correct
- GL_REPLACE with GL_RGB texture format wasn't always correct (alpha)
- glTexEnviv( pname != GL_TEXTURE_ENV_COLOR ) was broken
- glReadPixels was sometimes mistakenly clipped by the scissor box
- glDraw/ReadPixels didn't catch all the errors that they should have
- Fixed 24bpp rendering problem in Windows driver (Karl Schultz)
- 16-bit GLchan mode fixes (m_trans_tmp.h, s_triangle.c)
- Fixed 1-bit float->int conversion bug in glDrawPixels(GL_DEPTH_COMP)
- glColorMask as sometimes effecting glXSwapBuffers()
- fixed a potential bug in XMesaGarbageCollect()
- N threads rendering into one window didn't work reliably
- glCopyPixels didn't work for deep color channels
- improved 8 -> 16bit/channel texture image conversion (Gerk Huisma)
- glPopAttrib() didn't correctly restore user clip planes
- user clip planes failed for some perspective projections (Chromium)
Known bugs:
- mipmap LOD computation
4.0.3 June 25, 2002
New:
- updated GL/glext.h file (version 15)
- corrected MMX blend code (Jose Fonseca)
- support for software-based alpha planes in Windows driver
- updated GGI driver (Filip Spacek)
Bug fixes:
- glext.h had wrong values for GL_DOT3_RGB[A]_EXT tokens
- OSMesaMakeCurrent() didn't recognize buffer size changes
- assorted conformance fixes for 16-bit/channel rendering
- texcombine alpha subtraction mode was broken
- fixed lighting bug with non-uniform scaling and display lists
- fixed bug when deleting shared display lists
- disabled SPARC cliptest assembly code (Mesa bug 544665)
- fixed a couple Solaris compilation/link problems
- blending clipped glDrawPixels didn't always work
- glGetTexImage() didn't accept packed pixel types
- glPixelMapu[is]v() could explode given too large of pixelmap
- glGetTexParameter[if]v() didn't accept GL_TEXTURE_MAX_ANISOTROPY_EXT
- glXCopyContext() could lead to segfaults
- glCullFace(GL_FRONT_AND_BACK) didn't work (bug 572665)
Changes:
- lots of C++ (g++) code clean-ups
- lots of T&L updates for the Radeon DRI driver
Known bugs:
- mipmap LOD computation (fixed for Mesa 4.1)
4.0.4 October 3, 2002
New:
- GL_NV_texture_rectangle extension
- updated glext.h header (version 17)
- updated DOS driver (Daniel Borca)
- updated BeOS R5 driver (Philippe Houdoin)
- added GL_IBM_texture_mirror_repeat
- glxinfo now takes -l option to print interesting OpenGL limits info
- GL_MESA_ycbcr_texture extension
- GL_APPLE_client_storage extension (for some DRI drivers only)
- GL_MESA_pack_invert extension
Bug fixes:
- fixed GL_LINEAR fog bug by adding clamping
- fixed FP exceptions found using Alpha CPU
- 3dfx MESA_GLX_FX=window (render to window) didn't work
- fixed memory leak in wglCreateContest (Karl Schultz)
- define GLAPIENTRY and GLAPI if undefined in glu.h
- wglGetProcAddress didn't handle all API functions
- when testing for OpenGL 1.2 vs 1.3, check for GL_ARB_texture_cube_map
- removed GL_MAX_CONVOLUTION_WIDTH/HEIGHT from glGetInteger/Float/etc()
- error checking in compressed tex image functions had some glitches
- fixed AIX compile problem in src/config.c
- glGetTexImage was using pixel unpacking instead of packing params
- auto-mipmap generation for cube maps was incorrect
Changes:
- max texture units reduced to six to accomodate texture rectangles
- removed unfinished GL_MESA_sprite_point extension code
4.1 October 29, 2002
New:
- GL_NV_vertex_program extension
- GL_NV_vertex_program1_1 extension
- GL_ARB_window_pos extension
- GL_ARB_depth_texture extension
- GL_ARB_shadow extension
- GL_ARB_shadow_ambient extension
- GL_EXT_shadow_funcs extension
- GL_ARB_point_parameters extension
- GL_ARB_texture_env_crossbar
- GL_NV_point_sprite extension
- GL_NV_texture_rectangle extension
- GL_EXT_multi_draw_arrays extension
- GL_EXT_stencil_two_side extension
- GLX_SGIX_fbconfig and GLX_SGIX_pbuffer extensions
- GL_ATI_texture_mirror_once extension (Ian Romanick)
- massive overhaul/simplification of software rasterizer module,
many contributions from Klaus Niederkrueger
- faster software texturing in some cases (i.e. trilinear filtering)
- new OSMesaGetProcAddress() function
- more blend modes implemented with MMX code (Jose Fonseca)
- added glutGetProcAddress() to GLUT
- added GLUT_FPS env var to compute frames/second in glutSwapBuffers()
- pbinfo and pbdemo PBuffer programs
- glxinfo -v prints transprent pixel info (Gerd Sussner)
Bug fixes:
- better mipmap LOD computation (prevents excessive blurriness)
- OSMesaMakeCurrent() didn't recognize buffer size changes
- assorted conformance fixes for 16-bit/channel rendering
- texcombine alpha subtraction mode was broken
- fixed some blend problems when GLchan==GLfloat (Gerk Huisma)
- clamp colors to [0,inf] in OSMesa if GLchan==GLfloat (Gerk Huisma)
- fixed divide by zero error in NURBS tessellator (Jon Perry)
- fixed GL_LINEAR fog bug by adding clamping
- fixed FP exceptions found using Alpha CPU
- 3dfx/glide driver render-to-window feature was broken
- added missing GLX_TRANSPARENT_RGB token to glx.h
- fixed error checking related to paletted textures
- fixed reference count error in glDeleteTextures (Randy Fayan)
Changes:
- New spec file and Python code to generate some GL dispatch files
- Glide driver defaults to "no" with autoconf/automake
- updated demos/stex3d with new options
5.0 November 13, 2002
New:
- OpenGL 1.4 support (glGetString(GL_VERSION) returns "1.4")
- removed some overlooked debugging code
- glxinfo updated to support GLX_ARB_multisample
- GLUT now support GLX_ARB_multisample
- updated DOS driver (Daniel Borca)
Bug fixes:
- GL_POINT and GL_LINE-mode polygons didn't obey cull state
- fixed potential bug in _mesa_align_malloc/calloc()
- fixed missing triangle bug when running vertex programs
- fixed a few HPUX compilation problems
- FX (Glide) driver didn't compile
- setting GL_TEXTURE_BORDER_COLOR with glTexParameteriv() didn't work
- a few EXT functions, like glGenTexturesEXT, were no-ops
- a few OpenGL 1.4 functions like glFogCoord*, glBlendFuncSeparate,
glMultiDrawArrays and glMultiDrawElements were missing
- glGet*(GL_ACTIVE_STENCIL_FACE_EXT) was broken
- Pentium 4 Mobile was mistakenly identified as having 3DNow!
- fixed one-bit error in point/line fragment Z calculation
- fixed potential segfault in fakeglx code
- fixed color overflow problem in DOT3 texture env mode
5.0.1 March 30, 2003
New:
- DOS driver updates from Daniel Borca
- updated GL/gl_mangle.h file (Bill Hoffman)
Bug fixes:
- auto mipmap generation for cube maps was broken (bug 641363)
- writing/clearing software alpha channels was unreliable
- minor compilation fixes for OS/2 (Evgeny Kotsuba)
- fixed some bad assertions found with shadowtex demo
- fixed error checking bug in glCopyTexSubImage2D (bug 659020)
- glRotate(angle, -x, 0, 0) was incorrect (bug 659677)
- fixed potential segfault in texture object validation (bug 659012)
- fixed some bogus code in _mesa_test_os_sse_exception_support (Linus)
- fix fog stride bug in tnl code for h/w drivers (Michel Danzer)
- fixed glActiveTexture / glMatrixMode(GL_TEXTURE) bug (#669080)
- glGet(GL_CURRENT_SECONDARY_COLOR) should return 4 values, not 3
- fixed compilation problem on Solaris7/x86 (bug 536406)
- fixed prefetch bug in 3DNow! code (Felix Kuhling)
- fixed NeXT build problem (FABSF macro)
- glDrawPixels Z values when glPixelZoom!=1 were invalid (bug 687811)
- zoomed glDraw/CopyPixels with clipping sometimes failed (bug 689964)
- AA line and triangle Z values are now rounded, not truncated
- fixed color interpolation bug when GLchan==GLfloat (bug 694461)
- glArePrograms/TexturesResident() wasn't 100% correct (Jose Fonseca)
- fixed a minor GL_COLOR_MATERIAL bug
- NV vertex program EXP instruction was broken
- glColorMask misbehaved with X window / pixmap rendering
- fix autoconf/libtool GLU C++ linker problem on Linux (a total hack)
- attempt to fix GGI compilation problem when MesaDemos not present
- NV vertex program ARL-relative fetches didn't work
Changes:
- use glPolygonOffset in gloss demo to avoid z-fighting artifacts
- updated winpos and pointblast demos to use ARB extensions
- disable SPARC normal transformation code (bug 673938)
- GLU fixes for OS/2 (Evgeny Kotsuba)
5.0.2 September 5, 2003
Bug fixes:
- fixed texgen problem causing texcoord's Q to be zero (stex3d)
- default GL_TEXTURE_COMPARE_MODE_ARB was wrong
- GL_CURRENT_MATRIX_NV query was wrong
- GL_CURRENT_MATRIX_STACK_DEPTH_NV query was off by one
- GL_LIST_MODE query wasn't correct
- GL_FOG_COORDINATE_SOURCE_EXT query wasn't supported
- GL_SECONDARY_COLOR_ARRAY_SIZE_EXT query returned wrong value
- blended, wide lines didn't always work correctly (bug 711595)
- glVertexAttrib4svNV w component was always 1
- fixed bug in GL_IBM_rasterpos_clip (missing return)
- GL_DEPTH_TEXTURE_MODE = GL_ALPHA didn't work correctly
- a few Solaris compilation fixes
- fixed glClear() problem for DRI drivers (non-existant stencil, etc)
- fixed int/REAL mixup in GLU NURBS curve evaluator (Eric Cazeaux)
- fixed delete [] bug in SI GLU (bug 721765) (Diego Santa Cruz)
- glFog() didn't clamp fog colors
- fixed bad float/int conversion for GL_TEXTURE_PRIORITY in the
gl[Get]TexParameteri[v] functions
- fixed invalid memory references in glTexGen functions (bug 781602)
- integer-valued color arrays weren't handled correctly
- glDrawPixels(GL_DEPTH_COMPONENT) with glPixelZoom didn't work
- GL_EXT_texture_lod_bias is part of 1.4, overlooked in 5.0.1
Changes:
- build GLUT with -fexceptions so C++ apps propogate exceptions
5.1 December 17, 2003
New:
- reorganized directory tree
- GL_ARB_vertex/fragment_program extensions (Michal Krol & Karl Rasche)
- GL_ATI_texture_env_combine3 extension (Ian Romanick)
- GL_SGI_texture_color_table extension (Eric Plante)
- GL_NV_fragment_program extension
- GL_NV_light_max_exponent extension
- GL_EXT_texture_rectangle (identical to GL_NV_texture_rectangle)
- GL_ARB_occlusion_query extension
- GL_ARB_point_sprite extension
- GL_ARB_texture_non_power_of_two extension
- GL_IBM_multimode_draw_arrays extension
- GL_EXT_texture_mirror_clamp extension (Ian Romanick)
- GL_ARB_vertex_buffer_object extension
- new X86 feature detection code (Petr Sebor)
- less memory used for display lists and vertex buffers
- demo of per-pixel lighting with a fragment program (demos/fplight.c)
- new version (18) of glext.h header
- new spriteblast.c demo of GL_ARB_point_sprite
- faster glDrawPixels in X11 driver in some cases (see RELNOTES-5.1)
- faster glCopyPixels in X11 driver in some cases (see RELNOTES-5.1)
Bug fixes:
- really enable OpenGL 1.4 features in DOS driver.
- fixed issues in glDrawPixels and glCopyPixels for very wide images
- glPixelMapf/ui/usv()'s size parameter is GLsizei, not GLint
- fixed some texgen bugs reported by Daniel Borca
- fixed wglMakeCurrent(NULL, NULL) bug (#835861)
- fixed glTexSubImage3D z-offset bug (Cedric Gautier)
- fixed RGBA blend enable bug (Ville Syrjala)
- glAccum is supposed to be a no-op in selection/feedback mode
- fixed texgen bug #597589 (John Popplewell)
Changes:
- dropped API trace feature (src/Trace/)
- documentation overhaul. merged with website content. more html.
- glxgears.c demo updated to use GLX swap rate extensions
- glTexImage1/2/3D now allows width/height/depth = 0
- disable SPARC asm code on Linux (bug 852204)
6.0 January 16, 2004
New:
- full OpenGL 1.5 support
- updated GL/glext.h file to version 21
Changes:
- changed max framebuffer size to 4Kx4K (MAX_WIDTH/HEIGHT in config.h)
Bug fixes:
- fixed bug in UNCLAMPED_FLOAT_TO_UBYTE macro; solves a color
clamping issue
- updated suno5-gcc configs
- glColor3 functions sometimes resulted in undefined alpha values
- fixed FP divide by zero error seen on VMS with xlockmore, others
- fixed vertex/fragment program debug problem (bug 873011)
- building on AIX with gcc works now
- glDeleteProgramsARB failed for ARB fragment programs (bug 876160)
- glDrawRangeElements tried to modify potentially read-only storage
- updated files for building on Windows
6.0.1 April 2, 2004
New:
- upgraded glext.h to version 22
- new build targets (Dan Schikore)
- new linux-x86-opteron build target (Heath Feather)
Bug fixes:
- glBindProgramARB didn't update all necessary state
- fixed build problems on OpenBSD
- omit CVS directories from tarballs
- glGetTexImage(GL_COLOR_INDEX) was broken
- fixed an infinite loop in t&l module
- silenced some valgrind warnings about using unitialized memory
- fixed some compilation/link glitches on IRIX (Mike Stephens)
- glBindProgram wasn't getting compiled into display lists
- GLX_FBCONFIG_ID wasn't recognized in glXChooseFBConfig() (bug 888079)
- two-sided lighting and vertex program didn't work (bug 887330)
- stores to program parameter registers in vertex state programs
didn't work.
- fixed glOrtho bug found with gcc 3.2.2 (RH9)
- glXCreateWindow() wasn't fully implemented (bug 890894)
- generic vertex attribute arrays didn't work in display lists
- vertex buffer objects' default usage and access fields were wrong
- glDrawArrays with start!=0 was broken
- fragment program PK2H, UP2H, UP4B and UP4UB instructions were broken
- linux-osmesa16-static config didn't work
- fixed a few color index rendering problems (bug 910687)
- glInterleavedArrays didn't respect GL_CLIENT_ACTIVE_TEXTURE
- OSMesa RGB and BGR modes were broken
- glProgramStringARB mistakenly required a null-terminated string
- fragment program XPD instruction was incorrect
- glGetMaterial() didn't work reliably
- ARB_fragment_program KIL instruction was incorrect
6.1 August 18, 2004
New:
- Revamped Makefile system
- glXUseRotatedXFont() utility (see xdemos/xuserotfont.c)
- internal driver interface changes related to texture object
allocation, vertex/fragment programs, BlendEquationSeparate, etc.
- option to walk triangle edges with double-precision floats
(Justin Novosad of Discreet) (see config.h file)
- support for AUX buffers in software GLX driver
- updated glext.h to version 24 and glxext.h to version 6
- new MESA_GLX_FORCE_ALPHA and MESA_GLX_DEPTH_BITS env vars
- updated BeOS support (Philippe Houdoin)
Changes:
- fragment fog interpolation is perspective corrected now
- new glTexImage code, much cleaner, may be a bit faster
Bug fixes:
- glArrayElement in display lists didn't handle generic vertex attribs
- glFogCoord didn't always work properly
- ARB_fragment_program fog options didn't work
- frag prog TEX instruction no longer incorrectly divides s,t,r by q
- ARB frag prog TEX and TEXP instructions now use LOD=0
- glTexEnviv in display lists didn't work
- glRasterPos didn't do texgen or apply texture matrix
- GL_DOUBLE-valued vertex arrays were broken in some cases
- fixed texture rectangle edge/border sampling bugs
- sampling an incomplete texture in a fragment program would segfault
- glTexImage was missing a few error checks
- fixed some minor glGetTexParameter glitches
- GL_INTENSITY was mistakenly accepted as a <format> to glTexImage
- fragment program writes to RC/HC register were broken
- fixed a few glitches in GL_HP_occlusion_test extension
- glBeginQueryARB and glEndQueryARB didn't work inside display lists
- vertex program state references were broken
- fixed triangle color interpolation bug on AIX (Shane Blackett)
- fixed a number of minor memory leaks (bug #1002030)
6.2 October 2, 2004
New:
- enabled GL_ARB_texture_rectangle (same as GL_NV_texture_rectangle)
- updated Doxygen support (Jose Fonseca)
Changes:
- some GGI driver updates (Christoph Egger, bug 1025977)
Bug fixes:
- Omit GL_ARB_texture_non_power_of_two from list of OpenGL 1.5 features
- fixed a few compilation issues on IRIX
- fixed a matrix classification bug (reported by Wes Bethel)
- we weren't reseting the vertex/fragment program error state
before parsing (Dave Reveman)
- adjust texcoords for sampling texture rectangles (Dave Reveman)
- glGet*(GL_MAX_VERTEX_ATTRIBS_ARB) wasn't implemented
- repeated calls to glDeleteTexture(t) could lead to a crash
- fixed potential ref count bugs in VBOs and vertex/fragment programs
- spriteblast demo didn't handle window size changes correctly
- glTexSubImage didn't handle pixels=NULL correctly for PBOs
- fixed color index mode glDrawPixels bug (Karl Schultz)
6.2.1 December 9, 2004
Bug fixes:
- don't apply regular fog or color sum when using a fragment program
- glProgramEnvParameter4fARB always generated an error on
GL_FRAGMENT_PROGRAM_ARB (fdo bug 1645)
- glVertexAttrib3svNV and glVertexAttrib3svARB were broken
- fixed width/height mix-up in glSeparableFilter2D()
- fixed regression in glCopyPixels + convolution
- glReadPixels from a clipped front color buffer didn't always work
- glTexImage didn't accept GL_RED/GREEN/BLUE as the format
- Attempting queries/accesses of VBO 0 weren't detected as errors
- paletted textures failed if the palette had fewer than 256 entries
Changes:
- fixed a bunch of compiler warnings found with gcc 3.4
- bug reports should to go bugzilla.freedesktop.org
6.3 July 20, 2005
New:
- GL_EXT_framebuffer_object extension
- GL_ARB_draw_buffers extension
- GL_ARB_pixel_buffer_object extension
- GL_OES_read_format extension (Ian Romanick)
- DirectFB driver (Claudio Ciccani)
- x86_64 vertex transformation code (Mikko T.)
- Updated GL/glext.h to version 29
Changes:
- added -stereo option for glxgears demo (Jacek Rosik)
- updated the PBuffer demo code in xdemos/ directory
- glDeleteTextures/Programs/Buffers() now makes the object ID
available for immediate re-use
- assorted 64-bit clean-ups fixes (x86_64 and Win64)
- lots of internal changes for GL_EXT_framebuffer_object
Bug fixes:
- some functions didn't support PBO functionality
- glGetTexImage didn't convert color index images to RGBA as required
- fragment program texcoords were sometimes wrong for points and lines
- fixed problem with negative dot product in arbfplight, fplight demos
- fixed bug in perspective correction of antialiased, textured lines
- querying GL_POST_CONVOLUTION_ALPHA_BIAS_EXT returned wrong value
- fixed a couple per-pixel fog bugs (Soju Matsumoto)
- glGetBooleanv(GL_FRAGMENT_PROGRAM_BINDING_NV) was broken
- fixed float parsing bug in ARB frag/vert programs (bug 2520)
- XMesaGetDepthBuffer() returned incorrect value for bytesPerValue
- GL_COLOR_MATERIAL with glColor3 didn't properly set diffuse alpha
- glXChooseFBConfig() crashed if attribList pointer was NULL
- program state.light[n].spot.direction.w was wrong value (bug 3083)
- fragment program fog option required glEnable(GL_FOG) - wrong.
- glColorTable() could produce a Mesa implementation error (bug 3135)
- RasterPos could get corrupted by color index rendering path
- Removed bad XTranslateCoordinates call when rendering to Pixmaps
- glPopAttrib() didn't properly restore GL_TEXTURE_GEN enable state
- fixed a few Darwin compilation problems
6.3.1
This was an intermediate release for X.org which wasn't otherwise released.
6.3.2 August 19, 2005
New:
- The distribution now includes the DRI drivers and GLX code
Changes:
- Made the DRI "new" driver interface standard, remove old code
Bug fixes:
- GL_ARB_vertex/fragment_shader were mistakenly listed in the
extensions string
- negative relative addressing in vertex programs was broken
- update/fix SPARC assembly code for vertex transformation
- fixed memory leak when freeing GLX drawables/renderbuffers
- fixed display list memory leak
- the GL_PIXEL_MAP_I_TO_I table is now floating point, not integer
- wglGetProcAddress() didn't handle wgl-functions
- fixed glxext.h cross-compile issue (Colin Harrison)
- assorted DRI driver fixes
6.4 October 24, 2005
New:
- Added a fast XOR line drawing function in Xlib driver
- Added support for GL_ARB_texture_mirrored_repeat to savage
driver (supported only on Savage4 hardware).
Changes:
- Mesa now packaged in three parts: Library, Demos and GLUT
Bug fixes:
- GLX_X_RENDERABLE token wasn't accepted by glXChooseFBConfig
- Some files were present multiple times in the 6.3.2 tarballs
- r200_vtxtmp_x86.S file was missing from 6.3.2 tarball (bug 4207)
- glxgears_fbconfig demo didn't work (bug 4237)
- fixed bug when bilinear sampling 2d textures with borders
- glXCreatePbuffer() could segfault instead of returning 0 (bug 4235)
- fixed undefined frexp and rand in X.org libGLcore.a (bug 4242)
- fixed a few problems with proxy color tables (bug 4270)
- fixed precision problem in Z clearing (bug 4395)
- glBitmap, glDraw/CopyPixels mistakenly generated selection hits
- fixed potential segfault caused by reading pixels outside
of renderbuffer bounds
- glGetTexLevelParameter didn't accept GL_TEXTURE_DEPTH_SIZE_ARB
- fixed memory corruption bug involving software alpha buffers
- glReadPixels clipped by window bounds was sometimes broken
- glDraw/CopyPixels of stencil data ignored the stencil write mask
- glReadPixels from a texture bound to a framebuffer object didn't work
- glIsRender/FramebufferEXT weren't totally correct
- fixed a number of point size attenuation/fade bugs
- fixed glFogCoord bug 4729
- GLX encoding for transpose matrix functions was broken
- fixed broken fragment program KIL and SWZ instructions
- fragment programs that wrote result.depth.z didn't work
6.4.1 November 30, 2005
Bug fixes:
- redefining a vertex program string didn't take effect in TNL module
- fixed occasional segfault upon vertex/fragment parsing error
- vertex program LIT instruction didn't handle 0^0=1 correctly
- fragment program fog option didn't work with glDrawPixels, glBitmap
- USE_MGL_NAMESPACE didn't work for x86-64
- OSMesa demos were missing from previous release tarballs
- fixed problem with float->ushort conversion in glClear (bug 4992)
- popping of GL_EYE_PLANE texgen state was broken (bug 4996)
- popping of GL_SPOT_DIRECTION light state was broken (bug 5005)
- fixed occasional triangle color interpolation problem on VMS
- work around invalid free() call (bug 5131)
- fixed BSD X server compilation problem by including stdint.h
6.4.2 February 2, 2006
New:
- added OSMesaColorClamp() function/feature
- added wglGetExtensionStringARB() function
Bug fixes:
- fixed some problems when building on Windows
- GLw header files weren't installed by installmesa script (bug 5396)
- GL/glfbdev.h file was missing from tarballs
- fixed TNL initialization bug which could lead to crash (bug 5791)
6.5 March 31, 2006
New:
- OpenGL Shading Language support through GL_ARB_shader_objects,
GL_ARB_shading_language_100, GL_ARB_vertex_shader and
GL_ARB_fragment_shader (done by Michal Krol)
- GL_EXT_packed_depth_stencil extension
- GL_EXT_timer_query extension
- GL_EXT_framebuffer_blit extension
- GL_ARB_half_float_pixel
- reflect demo improved to support multiple windows
- singlebuffer demo (shows no/little-flicker single-buffered rendering)
- r200: enable GL_ARB_texture_env_crossbar, separate the texture
sampling unit bits from the texture env combine enable bits
- r200: add support for GL_ATI_fragment_shader
- added fast XOR-mode line drawing optimization
- radeon: add support for all 3 tmus, GL_ARB_texture_cube_map
and GL_EXT_fog_coord
- MESA_GLX_ALPHA_BITS env var for xlib driver
- many DRI driver updates (including screen rotation support
for the Intel DRI driver)
Changes:
- removed GL_HP_occlusion_test (use GL_ARB_occlusion_query instead)
- removed GL_SGIX/SGIS_pixel_texture extensions
Bug fixes:
- fixed glxcontextmodes.c datatype problem (bug 5835)
- fixed aix-gcc build/install bugs (bug 5874)
- fixed some bugs in texture env program generation
- glXCopyContext() didn't handle texture object bindings properly
- glXCopyContext() didn't copy all lighting state
- fixed FreeBSD config (Pedro Giffuni)
- fixed some minor framebuffer object bugs
- replaced dprintf() with _glu_printf() in GLU (bug 6244)
- fixed a number of thread safety bugs/regressions
- fixed a number of GLU tesselator bugs (John Shell, bug 6339)
- paletted texturing was broken w/ floating point palettes (K. Schultz)
- lots of assorted framebuffer object bug fixes
6.5.1 August 31, 2006
New:
- Intel i965 DRI driver
- GL_APPLE_vertex_array_object extension (Ian Romanick)
- GL_EXT_texture_sRGB extension
- GL_EXT_gpu_program_parameters (Ian Romanick)
- "engine" demo
- updated fbdev driver and GLUT for fbdev (Sean D'Epagnier)
- many updates to the DRI drivers
Changes:
- The glVertexAttribARB functions no longer alias the conventional
vertex attributes.
- glxinfo program prints more info with -l option
- GL_FRAGMENT_PROGRAM_NV and GL_FRAGMENT_PROGRAM_ARB are now
compatible, in terms of glBindProgramARB()
Bug fixes:
- fixed broken texture border handling for depth textures (bug 6498)
- removed the test for duplicated framebuffer attachments, per
version 117 of the GL_EXT_framebuffer_object specification
- fixed a few render-to-texture bugs, including render to depth texture
- clipping of lines against user-defined clip planes was broken (6512)
- assembly language dispatch for SPARC was broken (bug 6484)
- assorted compilation fixes on various Unix platforms (Dan Schikore)
- glPopAttrib could restore an invalid value for GL_DRAW_BUFFER
- assorted minor fixes for 16 and 32 bit/channel modes
- fixed assorted bugs in texture compression paths
- fixed indirect rendering vertex array crashes (bug 6863)
- glDrawPixels GL_INDEX_OFFSET didn't always work
- fixed convolution memory leak (bug 7077)
- rectangular depth textures didn't work
- invalid mode to glBegin didn't generate an error (bug 7142)
- 'normalized' parameter to glVertexAttribPointerARB didn't work
- disable bogus GLX_SGI_video_sync extension in xlib driver
- fixed R128 driver locking bug (Martijn van Oosterhout)
- using evaluators with vertex programs caused crashes (bug 7564)
- fragment.position wasn't set correctly for point/line primitives
- fixed parser bug for scalar sources for GL_NV_fragment_program
- max fragment program length was incorrectly 128, now 1024
- writes to result.depth in fragment programs weren't clamped to [0,1]
- fixed potential dangling pointer bug in glBindProgram()
- fixed some memory leaks (and potential crashes) in Xlib driver

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Application Issues</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Application Issues</h1>
<p>
This page documents known issues with some OpenGL applications.
</p>
<h2>Topogun</h2>
<p>
<a href="http://www.topogun.com/">Topogun</a> for Linux (version 2, at least)
creates a GLX visual without requesting a depth buffer.
This causes bad rendering if the OpenGL driver happens to choose a visual
without a depth buffer.
</p>
<p>
Mesa 9.1.2 and later (will) support a DRI configuration option to work around
this issue.
Using the <a href="http://dri.freedesktop.org/wiki/DriConf">driconf</a> tool,
set the "Create all visuals with a depth buffer" option before running Topogun.
Then, all GLX visuals will be created with a depth buffer.
</p>
<h2>Old OpenGL games</h2>
<p>
Some old OpenGL games (approx. ten years or older) may crash during
start-up because of an extension string buffer-overflow problem.
</p>
<p>
The problem is a modern OpenGL driver will return a very long string
for the glGetString(GL_EXTENSIONS) query and if the application
naively copies the string into a fixed-size buffer it can overflow the
buffer and crash the application.
</p>
<p>
The work-around is to set the MESA_EXTENSION_MAX_YEAR environment variable
to the approximate release year of the game.
This will cause the glGetString(GL_EXTENSIONS) query to only report extensions
older than the given year.
</p>
<p>
For example, if the game was released in 2001, do
<pre>
export MESA_EXTENSION_MAX_YEAR=2001
</pre>
before running the game.
</p>
<h2>Viewperf</h2>
<p>
See the <a href="viewperf.html">Viewperf issues</a> page for a detailed list
of Viewperf issues.
</p>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Compilation and Installation using Autoconf</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Compilation and Installation using Autoconf</h1>
<ol>
<li><p><a href="#basic">Basic Usage</a></li>
<li><p><a href="#driver">Driver Options</a>
<ul>
<li><a href="#xlib">Xlib Driver Options</a></li>
<li><a href="#dri">DRI Driver Options</a></li>
<li><a href="#osmesa">OSMesa Driver Options</a></li>
</ul>
</ol>
<h2 id="basic">1. Basic Usage</h2>
<p>
The autoconf generated configure script can be used to guess your
platform and change various options for building Mesa. To use the
configure script, type:
</p>
<pre>
./configure
</pre>
<p>
To see a short description of all the options, type <code>./configure
--help</code>. If you are using a development snapshot and the configure
script does not exist, type <code>./autogen.sh</code> to generate it
first. If you know the options you want to pass to
<code>configure</code>, you can pass them to <code>autogen.sh</code>. It
will run <code>configure</code> with these options after it is
generated. Once you have run <code>configure</code> and set the options
to your preference, type:
</p>
<pre>
make
</pre>
<p>
This will produce libGL.so and several other libraries depending on the
options you have chosen. Later, if you want to rebuild for a different
configuration run <code>make realclean</code> before rebuilding.
</p>
<p>
Some of the generic autoconf options are used with Mesa:
</p>
<dl>
<dt><code>--prefix=PREFIX</code></dt>
<dd><p>This is the root directory where
files will be installed by <code>make install</code>. The default is
<code>/usr/local</code>.</p>
</dd>
<dt><code>--exec-prefix=EPREFIX</code></dt>
<dd><p>This is the root directory
where architecture-dependent files will be installed. In Mesa, this is
only used to derive the directory for the libraries. The default is
<code>${prefix}</code>.</p>
</dd>
<dt><code>--libdir=LIBDIR</code></dt>
<dd><p>This option specifies the directory
where the GL libraries will be installed. The default is
<code>${exec_prefix}/lib</code>. It also serves as the name of the
library staging area in the source tree. For instance, if the option
<code>--libdir=/usr/local/lib64</code> is used, the libraries will be
created in a <code>lib64</code> directory at the top of the Mesa source
tree.</p>
</dd>
<dt><code>--enable-static, --disable-shared</code></dt>
<dd><p>By default, Mesa
will build shared libraries. Either of these options will force static
libraries to be built. It is not currently possible to build static and
shared libraries in a single pass.</p>
</dd>
<dt><code>CC, CFLAGS, CXX, CXXFLAGS</code></dt>
<dd><p>These environment variables
control the C and C++ compilers used during the build. By default,
<code>gcc</code> and <code>g++</code> are used with the options
<code>"-g -O2"</code>.</p>
</dd>
<dt><code>LDFLAGS</code></dt>
<dd><p>An environment variable specifying flags to
pass when linking programs. These are normally empty, but can be used
to direct the linker to use libraries in nonstandard directories. For
example, <code>LDFLAGS="-L/usr/X11R6/lib"</code>.</p>
</dd>
<dt><code>PKG_CONFIG_PATH</code></dt>
<dd><p>When available, the
<code>pkg-config</code> utility is used to search for external libraries
on the system. This environment variable is used to control the search
path for <code>pkg-config</code>. For instance, setting
<code>PKG_CONFIG_PATH=/usr/X11R6/lib/pkgconfig</code> will search for
package metadata in <code>/usr/X11R6</code> before the standard
directories.</p>
</dd>
</dl>
<p>
There are also a few general options for altering the Mesa build:
</p>
<dl>
<dt><code>--enable-debug</code></dt>
<dd><p>This option will enable compiler
options and macros to aid in debugging the Mesa libraries.</p>
</dd>
<dt><code>--disable-asm</code></dt>
<dd><p>There are assembly routines
available for a few architectures. These will be used by default if
one of these architectures is detected. This option ensures that
assembly will not be used.</p>
</dd>
<dt><code>--enable-32-bit</code></dt>
<dt><code>--enable-64-bit</code></dt>
<dd><p>By default, the build will compile code as directed by the environment
variables
<code>CC</code>, <code>CFLAGS</code>, etc. If the compiler is
<code>gcc</code>, these options offer a helper to add the compiler flags
to force 32- or 64-bit code generation as used on the x86 and x86_64
architectures. Note that these options are mutually exclusive.</p>
</dd>
</dl>
<h2 id="driver">2. Driver Options</h2>
<p>
There are several different driver modes that Mesa can use. These are
described in more detail in the <a href="install.html">basic
installation instructions</a>. The Mesa driver is controlled through the
configure options <code>--enable-xlib-glx</code>, <code>--enable-osmesa</code>,
and <code>--enable-dri</code>.
</p>
<h3 id="xlib">Xlib</h3><p>
It uses Xlib as a software renderer to do all rendering. It corresponds
to the option <code>--enable-xlib-glx</code>. The libX11 and libXext
libraries, as well as the X11 development headers, will be need to
support the Xlib driver.
<h3 id="dri">DRI</h3><p>This mode uses the DRI hardware drivers for
accelerated OpenGL rendering. Enable the DRI drivers with the option
<code>--enable-dri</code>. See the <a href="install.html">basic
installation instructions</a> for details on prerequisites for the DRI
drivers.
<!-- DRI specific options -->
<dl>
<dt><code>--with-dri-driverdir=DIR</code>
<dd><p> This option specifies the
location the DRI drivers will be installed to and the location libGL
will search for DRI drivers. The default is <code>${libdir}/dri</code>.
<dt><code>--with-dri-drivers=DRIVER,DRIVER,...</code>
<dd><p> This option
allows a specific set of DRI drivers to be built. For example,
<code>--with-dri-drivers="swrast,i965,radeon,nouveau"</code>. By
default, the drivers will be chosen depending on the target platform.
See the directory <code>src/mesa/drivers/dri</code> in the source tree
for available drivers. Beware that the swrast DRI driver is used by both
libGL and the X.Org xserver GLX module to do software rendering, so you
may run into problems if it is not available.
<!-- This explanation might be totally bogus. Kristian? -->
<dt><code>--disable-driglx-direct</code>
<dd><p> Disable direct rendering in
GLX. Normally, direct hardware rendering through the DRI drivers and
indirect software rendering are enabled in GLX. This option disables
direct rendering entirely. It can be useful on architectures where
kernel DRM modules are not available.
<dt><code>--enable-glx-tls</code> <dd><p>
Enable Thread Local Storage (TLS) in
GLX.
<dt><code>--with-expat=DIR</code> <dd> The DRI-enabled libGL uses expat to
parse the DRI configuration files in <code>/etc/drirc</code> and
<code>~/.drirc</code>. This option allows a specific expat installation
to be used. For example, <code>--with-expat=/usr/local</code> will
search for expat headers and libraries in <code>/usr/local/include</code>
and <code>/usr/local/lib</code>, respectively.
</dl>
<h3 id="osmesa">OSMesa </h3><p> No libGL is built in this
mode. Instead, the driver code is built into the Off-Screen Mesa
(OSMesa) library. See the <a href="osmesa.html">Off-Screen Rendering</a>
page for more details. It corresponds to the option
<code>--enable-osmesa</code>.
<!-- OSMesa specific options -->
<dl>
<dt><code>--with-osmesa-bits=BITS</code>
<dd><p> This option allows the size
of the color channel in bits to be specified. By default, an 8-bit
channel will be used, and the driver will be named libOSMesa. Other
options are 16- and 32-bit color channels, which will add the bit size
to the library name. For example, <code>--with-osmesa-bits=16</code>
will create the libOSMesa16 library with a 16-bit color channel.
</dl>
<h2 id="library">3. Library Options</h2>
<p>
The configure script provides more fine grained control over the GL
libraries that will be built. More details on the specific GL libraries
can be found in the <a href="install.html">basic installation
instructions</a>.
</div>
</body>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Bug Reporting</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Bug Database</h1>
<p>
The Mesa bug database is hosted on
<a href="http://freedesktop.org">freedesktop.org</a>.
The old bug database on SourceForge is no longer used.
</p>
<p>
To file a Mesa bug, go to
<a href="https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa">
Bugzilla on freedesktop.org</a>
</p>
<p>
Please follow these bug reporting guidelines:
</p>
<ul>
<li>Check if a new version of Mesa is available which might have fixed
the problem.
<li>Check if your bug is already reported in the database.
<li>Monitor your bug report for requests for additional information, etc.
<li>If you're reporting a crash, try to use your debugger (gdb) to get a stack
trace. Also, recompile Mesa in debug mode to get more detailed information.
<li>Describe in detail how to reproduce the bug, especially with games
and applications that the Mesa developers might not be familiar with.
<li>Provide a simple GLUT-based test program if possible
</ul>
<p>
Bug reports will automatically be forwarded by bugzilla to the Mesa
developer's mailing list.
</p>
<p>
The easier a bug is to reproduce, the sooner it will be fixed.
Please do everything you can to facilitate quickly fixing bugs.
If your bug report is vague or your test program doesn't compile
easily, the problem may not be fixed very quickly.
</p>
</div>
</body>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Conformance</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Conformance</h1>
<p>
The SGI OpenGL conformance tests verify correct operation of OpenGL
implementations. I, Brian Paul, have been given a copy of the tests
for testing Mesa. The tests are not publicly available.
</p>
<p>
This file has the latest results of testing Mesa with the OpenGL 1.2
conformance tests. Testing with the preliminary OpenGL 1.3 tests has
also been done. Mesa passes all the 1.3 tests.
</p>
<p>
The tests were run using the software X11 device driver on 24-bpp
and 16-bpp displays.
</p>
<p>
Mesa 4.0 and later pass all conformance tests at all path levels.
Note that this says nothing about the conformance of hardware drivers
based upon Mesa.
</p>
<pre>
COVERAGE TESTS
--------------
Test that all API functions accept the legal parameters and reject
illegal parameters. The result of each test is either pass or fail.
% covgl
OpenGL Coverage Test.
Version 1.2
covgl passed.
covgl passed at 1.1 level.
covgl passed at 1.2 level.
covgl passed for ARB_multitexture.
% covglu
OpenGL GLU Coverage Test.
Version 1.3
covglu passed.
covglu passed at 1.1 level.
% covglx
OpenGL X Coverage Test.
Version 1.1.1
covglx passed.
% primtest -v
Open GL Primitives Test.
Version 1.2
[lots of output deleted]
292159 Combinations.
primtest passed.
GL CONFORMANCE TEST
===================
Render test images, read them back, then test for expected results.
----------------------------------------------------------------------
% conform -v 2
OpenGL Conformance Test
Version 1.2
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path inactive.
Visual Report.
Display ID = 35. Indirect Rendering.
Double Buffered.
RGBA (5, 6, 5, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.0324, 0.016, 0.0324, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
Must Pass test passed.
Divide By Zero test passed.
Viewport Clamp test passed.
Matrix Stack test passed.
Matrix Stack Mixing test passed.
Vertex Order test passed.
Transformations test passed.
Transformation Normal test passed.
Viewport Transformation test passed.
Buffer Clear test passed.
Buffer Corners test passed.
Buffer Color test passed.
Color Ramp test passed.
Mask test passed.
Buffer Invariance test passed.
Accumulation Buffer test passed.
Select test passed.
Feedback test passed.
Scissor test passed.
Alpha Plane Function test passed.
Stencil Plane Clear test passed.
Stencil Plane Corners test passed.
Stencil Plane Operation test passed.
Stencil Plane Function test passed.
Depth Buffer Clear test passed.
Depth Buffer Function test passed.
Blend test passed.
Dither test passed.
LogicOp Function test does not exist for an RGB visual.
DrawPixels test passed.
CopyPixels test passed.
Bitmap Rasterization test passed.
Point Rasterization test passed.
Anti-aliased Point test passed.
Line Rasterization test passed.
Line Stipple test passed.
Anti-aliased Line test passed.
Horizontal and Vertical Line test passed.
Triangle Rasterization test passed.
Triangle Tile test passed.
Triangle Stipple test passed.
Anti-aliased Triangles test passed.
Quad Rasterization test passed.
Polygon Face test passed.
Polygon Cull test passed.
Polygon Stipple test passed.
Polygon Edge test passed.
Ambient Material test passed.
Ambient Scene test passed.
Attenuation Position test passed.
Diffuse Light test passed.
Diffuse Material test passed.
Diffuse Material Normal test passed.
Diffuse Material Positioning test passed.
Emissive Material test passed.
Specular Exponent test passed.
Specular Exponent Normal test passed.
Specular Local Eye Half Angle test passed.
Specular Light test passed.
Specular Material test passed.
Specular Normal test passed.
Spot Positioning test passed.
Spot Exponent and Positioning test passed.
Spot Exponent and Direction test passed.
Fog Exponential test passed.
Fog Linear test passed.
Texture Decal test passed.
Texture Border test passed.
Mipmaps Selection test passed.
Mipmaps Interpolation test passed.
Display Lists test passed.
Evaluator test passed.
Evaluator Color test passed.
Texture Edge Clamp test passed.
Packed Pixels test passed.
Texture LOD test passed.
Rescale Normal test passed.
Color Table test passed.
Convolution test passed.
Convolution Border test passed.
Histogram test passed.
MinMax test passed.
MultiTexture test passed.
Conform passed.
----------------------------------------------------------------------
% conform -v 2 -p 1
OpenGL Conformance Test
Version 1.2
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path level = 1.
Visual Report.
Display ID = 35. Indirect Rendering.
Double Buffered.
RGBA (5, 6, 5, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.0324, 0.016, 0.0324, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
Must Pass test passed.
Divide By Zero test passed.
Viewport Clamp test passed.
Matrix Stack test passed.
Matrix Stack Mixing test passed.
Vertex Order test passed.
Transformations test passed.
Transformation Normal test passed.
Viewport Transformation test passed.
Buffer Clear test passed.
Buffer Corners test passed.
Buffer Color test passed.
Color Ramp test passed.
Mask test passed.
Buffer Invariance test passed.
Accumulation Buffer test passed.
Select test passed.
Feedback test passed.
Scissor test passed.
Alpha Plane Function test passed.
Stencil Plane Clear test passed.
Stencil Plane Corners test passed.
Stencil Plane Operation test passed.
Stencil Plane Function test passed.
Depth Buffer Clear test passed.
Depth Buffer Function test passed.
Blend test passed.
Dither test passed.
LogicOp Function test does not exist for an RGB visual.
DrawPixels test passed.
CopyPixels test passed.
Bitmap Rasterization test passed.
Point Rasterization test passed.
Anti-aliased Point test passed.
Line Rasterization test passed.
Line Stipple test passed.
Anti-aliased Line test passed.
Horizontal and Vertical Line test passed.
Triangle Rasterization test passed.
Triangle Tile test passed.
Triangle Stipple test passed.
Anti-aliased Triangles test passed.
Quad Rasterization test passed.
Polygon Face test passed.
Polygon Cull test passed.
Polygon Stipple test passed.
Polygon Edge test passed.
Ambient Material test passed.
Ambient Scene test passed.
Attenuation Position test passed.
Diffuse Light test passed.
Diffuse Material test passed.
Diffuse Material Normal test passed.
Diffuse Material Positioning test passed.
Emissive Material test passed.
Specular Exponent test passed.
Specular Exponent Normal test passed.
Specular Local Eye Half Angle test passed.
Specular Light test passed.
Specular Material test passed.
Specular Normal test passed.
Spot Positioning test passed.
Spot Exponent and Positioning test passed.
Spot Exponent and Direction test passed.
Fog Exponential test passed.
Fog Linear test passed.
Texture Decal test passed.
Texture Border test passed.
Mipmaps Selection test passed.
Mipmaps Interpolation test passed.
Display Lists test passed.
Evaluator test passed.
Evaluator Color test passed.
Texture Edge Clamp test passed.
Packed Pixels test passed.
Texture LOD test passed.
Rescale Normal test passed.
Color Table test passed.
Convolution test passed.
Convolution Border test passed.
Histogram test passed.
MinMax test passed.
MultiTexture test passed.
Conform passed.
----------------------------------------------------------------------
% conform -v 2 -p 2
OpenGL Conformance Test
Version 1.2
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path level = 2.
Visual Report.
Display ID = 35. Indirect Rendering.
Double Buffered.
RGBA (5, 6, 5, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.0324, 0.016, 0.0324, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
Must Pass test passed.
Divide By Zero test passed.
Viewport Clamp test passed.
Matrix Stack test passed.
Matrix Stack Mixing test passed.
Vertex Order test passed.
Transformations test passed.
Transformation Normal test passed.
Viewport Transformation test passed.
Buffer Clear test passed.
Buffer Corners test passed.
Buffer Color test passed.
Color Ramp test passed.
Mask test passed.
Buffer Invariance test passed.
Accumulation Buffer test passed.
Select test passed.
Feedback test passed.
Scissor test passed.
Alpha Plane Function test passed.
Stencil Plane Clear test passed.
Stencil Plane Corners test passed.
Stencil Plane Operation test passed.
Stencil Plane Function test passed.
Depth Buffer Clear test passed.
Depth Buffer Function test passed.
Blend test passed.
Dither test passed.
LogicOp Function test does not exist for an RGB visual.
DrawPixels test passed.
CopyPixels test passed.
Bitmap Rasterization test passed.
Point Rasterization test passed.
Anti-aliased Point test passed.
Line Rasterization test passed.
Line Stipple test passed.
Anti-aliased Line test passed.
Horizontal and Vertical Line test passed.
Triangle Rasterization test passed.
Triangle Tile test passed.
Triangle Stipple test passed.
Anti-aliased Triangles test passed.
Quad Rasterization test passed.
Polygon Face test passed.
Polygon Cull test passed.
Polygon Stipple test passed.
Polygon Edge test passed.
Ambient Material test passed.
Ambient Scene test passed.
Attenuation Position test passed.
Diffuse Light test passed.
Diffuse Material test passed.
Diffuse Material Normal test passed.
Diffuse Material Positioning test passed.
Emissive Material test passed.
Specular Exponent test passed.
Specular Exponent Normal test passed.
Specular Local Eye Half Angle test passed.
Specular Light test passed.
Specular Material test passed.
Specular Normal test passed.
Spot Positioning test passed.
Spot Exponent and Positioning test passed.
Spot Exponent and Direction test passed.
Fog Exponential test passed.
Fog Linear test passed.
Texture Decal test passed.
Texture Border test passed.
Mipmaps Selection test passed.
Mipmaps Interpolation test passed.
Display Lists test passed.
Evaluator test passed.
Evaluator Color test passed.
Texture Edge Clamp test passed.
Packed Pixels test passed.
Texture LOD test passed.
Rescale Normal test passed.
Color Table test passed.
Convolution test passed.
Convolution Border test passed.
Histogram test passed.
MinMax test passed.
MultiTexture test passed.
Conform passed.
----------------------------------------------------------------------
% conform -v 2 -p 3
OpenGL Conformance Test
Version 1.2
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path level = 3.
Visual Report.
Display ID = 35. Indirect Rendering.
Double Buffered.
RGBA (5, 6, 5, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.0324, 0.016, 0.0324, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
Must Pass test passed.
Divide By Zero test passed.
Viewport Clamp test passed.
Matrix Stack test passed.
Matrix Stack Mixing test passed.
Vertex Order test passed.
Transformations test passed.
Transformation Normal test passed.
Viewport Transformation test passed.
Buffer Clear test passed.
Buffer Corners test passed.
Buffer Color test passed.
Color Ramp test passed.
Mask test passed.
Buffer Invariance test passed.
Accumulation Buffer test passed.
Select test passed.
Feedback test passed.
Scissor test passed.
Alpha Plane Function test passed.
Stencil Plane Clear test passed.
Stencil Plane Corners test passed.
Stencil Plane Operation test passed.
Stencil Plane Function test passed.
Depth Buffer Clear test passed.
Depth Buffer Function test passed.
Blend test passed.
Dither test passed.
LogicOp Function test does not exist for an RGB visual.
DrawPixels test passed.
CopyPixels test passed.
Bitmap Rasterization test passed.
Point Rasterization test passed.
Anti-aliased Point test passed.
Line Rasterization test passed.
Line Stipple test passed.
Anti-aliased Line test passed.
Horizontal and Vertical Line test passed.
Triangle Rasterization test passed.
Triangle Tile test passed.
Triangle Stipple test passed.
Anti-aliased Triangles test passed.
Quad Rasterization test passed.
Polygon Face test passed.
Polygon Cull test passed.
Polygon Stipple test passed.
Polygon Edge test passed.
Ambient Material test passed.
Ambient Scene test passed.
Attenuation Position test passed.
Diffuse Light test passed.
Diffuse Material test passed.
Diffuse Material Normal test passed.
Diffuse Material Positioning test passed.
Emissive Material test passed.
Specular Exponent test passed.
Specular Exponent Normal test passed.
Specular Local Eye Half Angle test passed.
Specular Light test passed.
Specular Material test passed.
Specular Normal test passed.
Spot Positioning test passed.
Spot Exponent and Positioning test passed.
Spot Exponent and Direction test passed.
Fog Exponential test passed.
Fog Linear test passed.
Texture Decal test passed.
Texture Border test passed.
Mipmaps Selection test passed.
Mipmaps Interpolation test passed.
Display Lists test passed.
Evaluator test passed.
Evaluator Color test passed.
Texture Edge Clamp test passed.
Packed Pixels test passed.
Texture LOD test passed.
Rescale Normal test passed.
Color Table test passed.
Convolution test passed.
Convolution Border test passed.
Histogram test passed.
MinMax test passed.
MultiTexture test passed.
Conform passed.
----------------------------------------------------------------------
% conform -v 2 -p 4
OpenGL Conformance Test
Version 1.2
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path level = 4.
Visual Report.
Display ID = 35. Indirect Rendering.
Double Buffered.
RGBA (5, 6, 5, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.0324, 0.016, 0.0324, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
Must Pass test passed.
Divide By Zero test passed.
Viewport Clamp test passed.
Matrix Stack test passed.
Matrix Stack Mixing test passed.
Vertex Order test passed.
Transformations test passed.
Transformation Normal test passed.
Viewport Transformation test passed.
Buffer Clear test passed.
Buffer Corners test passed.
Buffer Color test passed.
Color Ramp test passed.
Mask test passed.
Buffer Invariance test passed.
Accumulation Buffer test passed.
Select test passed.
Feedback test passed.
Scissor test passed.
Alpha Plane Function test passed.
Stencil Plane Clear test passed.
Stencil Plane Corners test passed.
Stencil Plane Operation test passed.
Stencil Plane Function test passed.
Depth Buffer Clear test passed.
Depth Buffer Function test passed.
Blend test passed.
Dither test passed.
LogicOp Function test does not exist for an RGB visual.
DrawPixels test passed.
CopyPixels test passed.
Bitmap Rasterization test passed.
Point Rasterization test passed.
Anti-aliased Point test passed.
Line Rasterization test passed.
Line Stipple test passed.
Anti-aliased Line test passed.
Horizontal and Vertical Line test passed.
Triangle Rasterization test passed.
Triangle Tile test passed.
Triangle Stipple test passed.
Anti-aliased Triangles test passed.
Quad Rasterization test passed.
Polygon Face test passed.
Polygon Cull test passed.
Polygon Stipple test passed.
Polygon Edge test passed.
Ambient Material test passed.
Ambient Scene test passed.
Attenuation Position test passed.
Diffuse Light test passed.
Diffuse Material test passed.
Diffuse Material Normal test passed.
Diffuse Material Positioning test passed.
Emissive Material test passed.
Specular Exponent test passed.
Specular Exponent Normal test passed.
Specular Local Eye Half Angle test passed.
Specular Light test passed.
Specular Material test passed.
Specular Normal test passed.
Spot Positioning test passed.
Spot Exponent and Positioning test passed.
Spot Exponent and Direction test passed.
Fog Exponential test passed.
Fog Linear test passed.
Texture Decal test passed.
Texture Border test passed.
Mipmaps Selection test passed.
Mipmaps Interpolation test passed.
Display Lists test passed.
Evaluator test passed.
Evaluator Color test passed.
Texture Edge Clamp test passed.
Packed Pixels test passed.
Texture LOD test passed.
Rescale Normal test passed.
Color Table test passed.
Convolution test passed.
Convolution Border test passed.
Histogram test passed.
MinMax test passed.
MultiTexture test passed.
Conform passed.
GLX CONFORMANCE TEST
====================
% conformx -v 2
OpenGL X Conformance Test
Version 1.1.1
Setup Report.
Verbose level = 2.
Random number seed = 1.
Path inactive.
Visual Report.
Display ID = 34. Direct Rendering.
Double Buffered.
RGBA (8, 8, 8, 0).
Stencil (8).
Depth (16).
Accumulation (16, 16, 16, 16).
Epsilon Report.
zero error epsilon = 0.000122.
RGBA error epsilon = 0.00404, 0.00404, 0.00404, 0.000122.
Depth buffer error epsilon = 0.000137.
Stencil plane error epsilon = 0.00404.
Accumulation error epsilon = 0.000137, 0.000137, 0.000137, 0.000137.
Default State test passed.
glReadPixels() test passed.
Font test passed.
Conformx passed.
</pre>
NOTE: conformx passes for all machine path levels (-p option).
</div>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Contents</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
<!--Override a few values from the style sheet: -->
<style type="text/css">
<!--
body {
background-color: #cccccc;
color: black;
}
a:link {
color: #000;
}
a:visited {
color: #000;
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-->
</style>
</head>
<body>
<b>Documentation</b>
<ul>
<li><a href="intro.html" target="_parent">Introduction</a>
<li><a href="index.html" target="_parent">News</a>
<li><a href="developers.html" target="_parent">Developers</a>
<li><a href="systems.html" target="_parent">Platforms and Drivers</a>
<li><a href="license.html" target="_parent">License &amp; Copyright</a>
<li><a href="faq.html" target="_parent">FAQ</a>
<li><a href="relnotes.html" target="_parent">Release Notes</a>
<li><a href="thanks.html" target="_parent">Acknowledgements</a>
<li><a href="conform.html" target="_parent">Conformance Testing</a>
<li>more docs below...
</ul>
<b>Download / Install</b>
<ul>
<li><a href="download.html" target="_parent">Downloading / Unpacking</a>
<li><a href="install.html" target="_parent">Compiling / Installing</a>
<ul>
<li><a href="autoconf.html" target="_parent">Autoconf</a></li>
</ul>
</li>
<li><a href="precompiled.html" target="_parent">Precompiled Libraries</a>
</ul>
<b>Resources</b>
<ul>
<li><a href="lists.html" target="_parent">Mailing Lists</a>
<li><a href="bugs.html" target="_parent">Bug Database</a>
<li><a href="webmaster.html" target="_parent">Webmaster</a>
<li><a href="http://dri.freedesktop.org/" target="_parent">Mesa/DRI Wiki</a>
</ul>
<b>User Topics</b>
<ul>
<li><a href="shading.html" target="_parent">Shading Language</a>
<li><a href="egl.html" target="_parent">EGL</a>
<li><a href="opengles.html" target="_parent">OpenGL ES</a>
<li><a href="openvg.html" target="_parent">OpenVG / Vega</a>
<li><a href="envvars.html" target="_parent">Environment Variables</a>
<li><a href="osmesa.html" target="_parent">Off-Screen Rendering</a>
<li><a href="debugging.html" target="_parent">Debugging Tips</a>
<li><a href="perf.html" target="_parent">Performance Tips</a>
<li><a href="extensions.html" target="_parent">Mesa Extensions</a>
<li><a href="mangling.html" target="_parent">Function Name Mangling</a>
<li><a href="llvmpipe.html" target="_parent">Gallium llvmpipe driver</a>
<li><a href="vmware-guest.html" target="_parent">VMware SVGA3D guest driver</a>
<li><a href="postprocess.html" target="_parent">Gallium post-processing</a>
<li><a href="application-issues.html" target="_parent">Application Issues</a>
<li><a href="viewperf.html" target="_parent">Viewperf Issues</a>
</ul>
<b>Developer Topics</b>
<ul>
<li><a href="repository.html" target="_parent">Source Code Repository</a>
<li><a href="sourcetree.html" target="_parent">Source Code Tree</a>
<li><a href="utilities.html" target="_parent">Utilities</a>
<li><a href="helpwanted.html" target="_parent">Help Wanted</a>
<li><a href="devinfo.html" target="_parent">Development Notes</a>
<li><a href="sourcedocs.html" target="_parent">Source Documentation</a>
<li><a href="dispatch.html" target="_parent">GL Dispatch</a>
</ul>
<b>Links</b>
<ul>
<li><a href="http://www.opengl.org" target="_parent">OpenGL website</a>
<li><a href="http://dri.freedesktop.org" target="_parent">DRI website</a>
<li><a href="http://www.freedesktop.org" target="_parent">freedesktop.org</a>
</ul>
<b>Hosted by:</b>
<br>
<blockquote>
<a href="http://sourceforge.net"
target="_parent"><img src="http://sourceforge.net/sflogo.php?group_id=3&amp;type=1"
width="88" height="31" align="bottom" alt="Sourceforge.net" border="0"></a>
</blockquote>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Debugging Tips</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Debugging Tips</h1>
<p>
Normally Mesa (and OpenGL) records but does not notify the user of
errors. It is up to the application to call
<code>glGetError</code> to check for errors. Mesa supports an
environment variable, MESA_DEBUG, to help with debugging. If
MESA_DEBUG is defined, a message will be printed to stdout whenever
an error occurs.
</p>
<p>
More extensive error checking is done when Mesa is compiled with the
DEBUG symbol defined. You'll have to edit the Make-config file and
add -DDEBUG to the CFLAGS line for your system configuration. You may
also want to replace any optimization flags with the -g flag so you can
use your debugger. After you've edited Make-config type 'make clean'
before recompiling.
</p>
<p>
In your debugger you can set a breakpoint in _mesa_error() to trap Mesa
errors.
</p>
<p>
There is a display list printing/debugging facility. See the end of
src/dlist.c for details.
</p>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Developers</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Developers</h1>
<p>
Both professional and volunteer developers contribute to Mesa.
</p>
<p>
<a href="http://www.vmware.com/">VMware</a>
employs several of the main Mesa developers including Brian Paul
and Keith Whitwell.
</p>
<p>
In the past, Tungsten Graphics contracts implemented many Mesa features
including:
</p>
<ul>
<li>DRI drivers for Intel i965, i945, i915 and other chips
<li>Advanced memory manager and framebuffer object support
<li>Shading language compiler and OpenGL 2.0 support
<li>MiniGLX environment
</ul>
<p>
Other companies including
<a href="http://www.intellinuxgraphics.org/index.html">Intel</a>
and RedHat also actively contribute to the project.
Intel has recently contributed the new GLSL compiler in Mesa 7.9.
</p>
<p>
<a href="http://www.lunarg.com/">LunarG</a> can be contacted
for custom Mesa / 3D graphics development.
</p>
<p>
Volunteers have made significant contributions to all parts of Mesa, including
complete device drivers.
</p>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Development Notes</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Development Notes</h1>
<h2>Adding Extensions</h2>
<p>
To add a new GL extension to Mesa you have to do at least the following.
<ul>
<li>
If glext.h doesn't define the extension, edit include/GL/gl.h and add
code like this:
<pre>
#ifndef GL_EXT_the_extension_name
#define GL_EXT_the_extension_name 1
/* declare the new enum tokens */
/* prototype the new functions */
/* TYPEDEFS for the new functions */
#endif
</pre>
</li>
<li>
In the src/mapi/glapi/gen/ directory, add the new extension functions and
enums to the gl_API.xml file.
Then, a bunch of source files must be regenerated by executing the
corresponding Python scripts.
</li>
<li>
Add a new entry to the <code>gl_extensions</code> struct in mtypes.h
</li>
<li>
Update the <code>extensions.c</code> file.
</li>
<li>
From this point, the best way to proceed is to find another extension,
similar to the new one, that's already implemented in Mesa and use it
as an example.
</li>
<li>
If the new extension adds new GL state, the functions in get.c, enable.c
and attrib.c will most likely require new code.
</li>
</ul>
<h2>Coding Style</h2>
<p>
Mesa's code style has changed over the years. Here's the latest.
</p>
<p>
Comment your code! It's extremely important that open-source code be
well documented. Also, strive to write clean, easily understandable code.
</p>
<p>
3-space indentation
</p>
<p>
If you use tabs, set them to 8 columns
</p>
<p>
Line width: the preferred width to fill comments and code in Mesa is 78
columns. Exceptions are sometimes made for clarity (e.g. tabular data is
sometimes filled to a much larger width so that extraneous carriage returns
don't obscure the table).
</p>
<p>
Brace example:
</p>
<pre>
if (condition) {
foo;
}
else {
bar;
}
switch (condition) {
case 0:
foo();
break;
case 1: {
...
break;
}
default:
...
break;
}
</pre>
<p>
Here's the GNU indent command which will best approximate my preferred style:
(Note that it won't format switch statements in the preferred way)
</p>
<pre>
indent -br -i3 -npcs --no-tabs infile.c -o outfile.c
</pre>
<p>
Local variable name example: localVarName (no underscores)
</p>
<p>
Constants and macros are ALL_UPPERCASE, with _ between words
</p>
<p>
Global variables are not allowed.
</p>
<p>
Function name examples:
</p>
<pre>
glFooBar() - a public GL entry point (in glapi_dispatch.c)
_mesa_FooBar() - the internal immediate mode function
save_FooBar() - retained mode (display list) function in dlist.c
foo_bar() - a static (private) function
_mesa_foo_bar() - an internal non-static Mesa function
</pre>
<p>
Places that are not directly visible to the GL API should prefer the use
of <tt>bool</tt>, <tt>true</tt>, and
<tt>false</tt> over <tt>GLboolean</tt>, <tt>GL_TRUE</tt>, and
<tt>GL_FALSE</tt>. In C code, this may mean that
<tt>#include &lt;stdbool.h&gt;</tt> needs to be added. The
<tt>try_emit_</tt>* methods in src/mesa/program/ir_to_mesa.cpp and
src/mesa/state_tracker/st_glsl_to_tgsi.cpp can serve as examples.
</p>
<h2>Submitting patches</h2>
<p>
You should always run the Mesa Testsuite before submitting patches.
The Testsuite can be run using the 'make check' command. All tests
must pass before patches will be accepted, this may mean you have
to update the tests themselves.
</p>
<p>
Patches should be sent to the Mesa mailing list for review.
When submitting a patch make sure to use git send-email rather than attaching
patches to emails. Sending patches as attachments prevents people from being
able to provide in-line review comments.
</p>
<p>
When submitting follow-up patches you can use --in-reply-to to make v2, v3,
etc patches show up as replies to the originals. This usually works well
when you're sending out updates to individual patches (as opposed to
re-sending the whole series). Using --in-reply-to makes
it harder for reviewers to accidentally review old patches.
</p>
<h2>Marking a commit as a candidate for a stable branch</h2>
<p>
If you want a commit to be applied to a stable branch,
you should add an appropriate note to the commit message.
</p>
<p>
Here are some examples of such a note:
</p>
<ul>
<li>CC: &lt;mesa-stable@lists.freedesktop.org&gt;</li>
<li>CC: "9.2 10.0" &lt;mesa-stable@lists.freedesktop.org&gt;</li>
<li>CC: "10.0" &lt;mesa-stable@lists.freedesktop.org&gt;</li>
</ul>
Simply adding the CC to the mesa-stable list address is adequate to nominate
the commit for the most-recently-created stable branch. It is only necessary
to specify a specific branch name, (such as "9.2 10.0" or "10.0" in the
examples above), if you want to nominate the commit for an older stable
branch. And, as in these examples, you can nominate the commit for the older
branch in addition to the more recent branch, or nominate the commit
exclusively for the older branch.
This "CC" syntax for patch nomination will cause patches to automatically be
copied to the mesa-stable@ mailing list when you use "git send-email" to send
patches to the mesa-dev@ mailing list. Also, if you realize that a commit
should be nominated for the stable branch after it has already been committed,
you can send a note directly to the mesa-stable@lists.freedesktop.org where
the Mesa stable-branch maintainers will receive it. Be sure to mention the
commit ID of the commit of interest (as it appears in the mesa master branch).
<h2>Cherry-picking candidates for a stable branch</h2>
<p>
Please use <code>git cherry-pick -x &lt;commit&gt;</code> for cherry-picking a commit
from master to a stable branch.
</p>
<h2>Making a New Mesa Release</h2>
<p>
These are the instructions for making a new Mesa release.
</p>
<h3>Get latest source files</h3>
<p>
Use git to get the latest Mesa files from the git repository, from whatever
branch is relevant.
</p>
<h3>Verify and update version info in VERSION</h3>
<p>
Create a docs/relnotes/x.y.z.html file.
The bin/bugzilla_mesa.sh and bin/shortlog_mesa.sh scripts can be used to
create the HTML-formatted lists of bugfixes and changes to include in the file.
Link the new docs/relnotes/x.y.z.html file into the main <a href="relnotes.html">relnotes.html</a> file.
</p>
<p>
Update <a href="index.html">docs/index.html</a>.
</p>
<p>
Tag the files with the release name (in the form <b>mesa-x.y</b>)
with: <code>git tag -s mesa-x.y -m "Mesa x.y Release"</code>
Then: <code>git push origin mesa-x.y</code>
</p>
<h3>Make the tarballs</h3>
<p>
Make the distribution files. From inside the Mesa directory:
<pre>
./autogen.sh
make tarballs
</pre>
<p>
After the tarballs are created, the md5 checksums for the files will
be computed.
Add them to the docs/relnotes/x.y.html file.
</p>
<p>
Copy the distribution files to a temporary directory, unpack them,
compile everything, and run some demos to be sure everything works.
</p>
<h3>Update the website and announce the release</h3>
<p>
Make a new directory for the release on annarchy.freedesktop.org with:
<br>
<code>
mkdir /srv/ftp.freedesktop.org/pub/mesa/x.y
</code>
</p>
<p>
Basically, to upload the tarball files with:
<br>
<code>
rsync -avP -e ssh MesaLib-x.y.* USERNAME@annarchy.freedesktop.org:/srv/ftp.freedesktop.org/pub/mesa/x.y/
</code>
</p>
<p>
Update the web site by copying the docs/ directory's files to
/home/users/b/br/brianp/mesa-www/htdocs/ with:
<br>
<code>
sftp USERNAME,mesa3d@web.sourceforge.net
</code>
</p>
<p>
Make an announcement on the mailing lists:
<em>mesa-dev@lists.freedesktop.org</em>,
<em>mesa-users@lists.freedesktop.org</em>
and
<em>mesa-announce@lists.freedesktop.org</em>
</p>
</div>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>GL Dispatch in Mesa</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>GL Dispatch in Mesa</h1>
<p>Several factors combine to make efficient dispatch of OpenGL functions
fairly complicated. This document attempts to explain some of the issues
and introduce the reader to Mesa's implementation. Readers already familiar
with the issues around GL dispatch can safely skip ahead to the <a
href="#overview">overview of Mesa's implementation</a>.</p>
<h2>1. Complexity of GL Dispatch</h2>
<p>Every GL application has at least one object called a GL <em>context</em>.
This object, which is an implicit parameter to every GL function, stores all
of the GL related state for the application. Every texture, every buffer
object, every enable, and much, much more is stored in the context. Since
an application can have more than one context, the context to be used is
selected by a window-system dependent function such as
<tt>glXMakeContextCurrent</tt>.</p>
<p>In environments that implement OpenGL with X-Windows using GLX, every GL
function, including the pointers returned by <tt>glXGetProcAddress</tt>, are
<em>context independent</em>. This means that no matter what context is
currently active, the same <tt>glVertex3fv</tt> function is used.</p>
<p>This creates the first bit of dispatch complexity. An application can
have two GL contexts. One context is a direct rendering context where
function calls are routed directly to a driver loaded within the
application's address space. The other context is an indirect rendering
context where function calls are converted to GLX protocol and sent to a
server. The same <tt>glVertex3fv</tt> has to do the right thing depending
on which context is current.</p>
<p>Highly optimized drivers or GLX protocol implementations may want to
change the behavior of GL functions depending on current state. For
example, <tt>glFogCoordf</tt> may operate differently depending on whether
or not fog is enabled.</p>
<p>In multi-threaded environments, it is possible for each thread to have a
different GL context current. This means that poor old <tt>glVertex3fv</tt>
has to know which GL context is current in the thread where it is being
called.</p>
<h2 id="overview">2. Overview of Mesa's Implementation</h2>
<p>Mesa uses two per-thread pointers. The first pointer stores the address
of the context current in the thread, and the second pointer stores the
address of the <em>dispatch table</em> associated with that context. The
dispatch table stores pointers to functions that actually implement
specific GL functions. Each time a new context is made current in a thread,
these pointers a updated.</p>
<p>The implementation of functions such as <tt>glVertex3fv</tt> becomes
conceptually simple:</p>
<ul>
<li>Fetch the current dispatch table pointer.</li>
<li>Fetch the pointer to the real <tt>glVertex3fv</tt> function from the
table.</li>
<li>Call the real function.</li>
</ul>
<p>This can be implemented in just a few lines of C code. The file
<tt>src/mesa/glapi/glapitemp.h</tt> contains code very similar to this.</p>
<blockquote>
<table border="1">
<tr><td><pre>
void glVertex3f(GLfloat x, GLfloat y, GLfloat z)
{
const struct _glapi_table * const dispatch = GET_DISPATCH();
(*dispatch-&gt;Vertex3f)(x, y, z);
}</pre></td></tr>
<tr><td>Sample dispatch function</td></tr></table>
</blockquote>
<p>The problem with this simple implementation is the large amount of
overhead that it adds to every GL function call.</p>
<p>In a multithreaded environment, a naive implementation of
<tt>GET_DISPATCH</tt> involves a call to <tt>pthread_getspecific</tt> or a
similar function. Mesa provides a wrapper function called
<tt>_glapi_get_dispatch</tt> that is used by default.</p>
<h2>3. Optimizations</h2>
<p>A number of optimizations have been made over the years to diminish the
performance hit imposed by GL dispatch. This section describes these
optimizations. The benefits of each optimization and the situations where
each can or cannot be used are listed.</p>
<h3>3.1. Dual dispatch table pointers</h3>
<p>The vast majority of OpenGL applications use the API in a single threaded
manner. That is, the application has only one thread that makes calls into
the GL. In these cases, not only do the calls to
<tt>pthread_getspecific</tt> hurt performance, but they are completely
unnecessary! It is possible to detect this common case and avoid these
calls.</p>
<p>Each time a new dispatch table is set, Mesa examines and records the ID
of the executing thread. If the same thread ID is always seen, Mesa knows
that the application is, from OpenGL's point of view, single threaded.</p>
<p>As long as an application is single threaded, Mesa stores a pointer to
the dispatch table in a global variable called <tt>_glapi_Dispatch</tt>.
The pointer is also stored in a per-thread location via
<tt>pthread_setspecific</tt>. When Mesa detects that an application has
become multithreaded, <tt>NULL</tt> is stored in <tt>_glapi_Dispatch</tt>.</p>
<p>Using this simple mechanism the dispatch functions can detect the
multithreaded case by comparing <tt>_glapi_Dispatch</tt> to <tt>NULL</tt>.
The resulting implementation of <tt>GET_DISPATCH</tt> is slightly more
complex, but it avoids the expensive <tt>pthread_getspecific</tt> call in
the common case.</p>
<blockquote>
<table border="1">
<tr><td><pre>
#define GET_DISPATCH() \
(_glapi_Dispatch != NULL) \
? _glapi_Dispatch : pthread_getspecific(&_glapi_Dispatch_key)
</pre></td></tr>
<tr><td>Improved <tt>GET_DISPATCH</tt> Implementation</td></tr></table>
</blockquote>
<h3>3.2. ELF TLS</h3>
<p>Starting with the 2.4.20 Linux kernel, each thread is allocated an area
of per-thread, global storage. Variables can be put in this area using some
extensions to GCC. By storing the dispatch table pointer in this area, the
expensive call to <tt>pthread_getspecific</tt> and the test of
<tt>_glapi_Dispatch</tt> can be avoided.</p>
<p>The dispatch table pointer is stored in a new variable called
<tt>_glapi_tls_Dispatch</tt>. A new variable name is used so that a single
libGL can implement both interfaces. This allows the libGL to operate with
direct rendering drivers that use either interface. Once the pointer is
properly declared, <tt>GET_DISPACH</tt> becomes a simple variable
reference.</p>
<blockquote>
<table border="1">
<tr><td><pre>
extern __thread struct _glapi_table *_glapi_tls_Dispatch
__attribute__((tls_model("initial-exec")));
#define GET_DISPATCH() _glapi_tls_Dispatch
</pre></td></tr>
<tr><td>TLS <tt>GET_DISPATCH</tt> Implementation</td></tr></table>
</blockquote>
<p>Use of this path is controlled by the preprocessor define
<tt>GLX_USE_TLS</tt>. Any platform capable of using TLS should use this as
the default dispatch method.</p>
<h3>3.3. Assembly Language Dispatch Stubs</h3>
<p>Many platforms has difficulty properly optimizing the tail-call in the
dispatch stubs. Platforms like x86 that pass parameters on the stack seem
to have even more difficulty optimizing these routines. All of the dispatch
routines are very short, and it is trivial to create optimal assembly
language versions. The amount of optimization provided by using assembly
stubs varies from platform to platform and application to application.
However, by using the assembly stubs, many platforms can use an additional
space optimization (see <a href="#fixedsize">below</a>).</p>
<p>The biggest hurdle to creating assembly stubs is handling the various
ways that the dispatch table pointer can be accessed. There are four
different methods that can be used:</p>
<ol>
<li>Using <tt>_glapi_Dispatch</tt> directly in builds for non-multithreaded
environments.</li>
<li>Using <tt>_glapi_Dispatch</tt> and <tt>_glapi_get_dispatch</tt> in
multithreaded environments.</li>
<li>Using <tt>_glapi_Dispatch</tt> and <tt>pthread_getspecific</tt> in
multithreaded environments.</li>
<li>Using <tt>_glapi_tls_Dispatch</tt> directly in TLS enabled
multithreaded environments.</li>
</ol>
<p>People wishing to implement assembly stubs for new platforms should focus
on #4 if the new platform supports TLS. Otherwise, implement #2 followed by
#3. Environments that do not support multithreading are uncommon and not
terribly relevant.</p>
<p>Selection of the dispatch table pointer access method is controlled by a
few preprocessor defines.</p>
<ul>
<li>If <tt>GLX_USE_TLS</tt> is defined, method #4 is used.</li>
<li>If <tt>HAVE_PTHREAD</tt> is defined, method #3 is used.</li>
<li>If <tt>WIN32_THREADS</tt> is defined, method #2 is used.</li>
<li>If none of the preceding are defined, method #1 is used.</li>
</ul>
<p>Two different techniques are used to handle the various different cases.
On x86 and SPARC, a macro called <tt>GL_STUB</tt> is used. In the preamble
of the assembly source file different implementations of the macro are
selected based on the defined preprocessor variables. The assembly code
then consists of a series of invocations of the macros such as:
<blockquote>
<table border="1">
<tr><td><pre>
GL_STUB(Color3fv, _gloffset_Color3fv)
</pre></td></tr>
<tr><td>SPARC Assembly Implementation of <tt>glColor3fv</tt></td></tr></table>
</blockquote>
<p>The benefit of this technique is that changes to the calling pattern
(i.e., addition of a new dispatch table pointer access method) require fewer
changed lines in the assembly code.</p>
<p>However, this technique can only be used on platforms where the function
implementation does not change based on the parameters passed to the
function. For example, since x86 passes all parameters on the stack, no
additional code is needed to save and restore function parameters around a
call to <tt>pthread_getspecific</tt>. Since x86-64 passes parameters in
registers, varying amounts of code needs to be inserted around the call to
<tt>pthread_getspecific</tt> to save and restore the GL function's
parameters.</p>
<p>The other technique, used by platforms like x86-64 that cannot use the
first technique, is to insert <tt>#ifdef</tt> within the assembly
implementation of each function. This makes the assembly file considerably
larger (e.g., 29,332 lines for <tt>glapi_x86-64.S</tt> versus 1,155 lines for
<tt>glapi_x86.S</tt>) and causes simple changes to the function
implementation to generate many lines of diffs. Since the assembly files
are typically generated by scripts (see <a href="#autogen">below</a>), this
isn't a significant problem.</p>
<p>Once a new assembly file is created, it must be inserted in the build
system. There are two steps to this. The file must first be added to
<tt>src/mesa/sources</tt>. That gets the file built and linked. The second
step is to add the correct <tt>#ifdef</tt> magic to
<tt>src/mesa/glapi/glapi_dispatch.c</tt> to prevent the C version of the
dispatch functions from being built.</p>
<h3 id="fixedsize">3.4. Fixed-Length Dispatch Stubs</h3>
<p>To implement <tt>glXGetProcAddress</tt>, Mesa stores a table that
associates function names with pointers to those functions. This table is
stored in <tt>src/mesa/glapi/glprocs.h</tt>. For different reasons on
different platforms, storing all of those pointers is inefficient. On most
platforms, including all known platforms that support TLS, we can avoid this
added overhead.</p>
<p>If the assembly stubs are all the same size, the pointer need not be
stored for every function. The location of the function can instead be
calculated by multiplying the size of the dispatch stub by the offset of the
function in the table. This value is then added to the address of the first
dispatch stub.</p>
<p>This path is activated by adding the correct <tt>#ifdef</tt> magic to
<tt>src/mesa/glapi/glapi.c</tt> just before <tt>glprocs.h</tt> is
included.</p>
<h2 id="autogen">4. Automatic Generation of Dispatch Stubs</h2>
</div>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Getting Mesa</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Downloading</h1>
<p>
Primary Mesa download site:
<a href="ftp://ftp.freedesktop.org/pub/mesa/">freedesktop.org</a> (FTP)
</p>
<p>
When a new release is coming, release candidates (betas) may be found
<a href="ftp://ftp.freedesktop.org/pub/mesa/beta/">here</a>.
</p>
<h1>Unpacking</h1>
<p>
Mesa releases are available in three formats: .tar.bz2, .tar.gz, and .zip
</p>
<p>
To unpack .tar.gz files:
</p>
<pre>
tar zxf MesaLib-x.y.z.tar.gz
</pre>
or
<pre>
gzcat MesaLib-x.y.z.tar.gz | tar xf -
</pre>
or
<pre>
gunzip MesaLib-x.y.z.tar.gz ; tar xf MesaLib-x.y.z.tar
</pre>
<p>
To unpack .tar.bz2 files:
</p>
<pre>
bunzip2 -c MesaLib-x.y.z.tar.gz | tar xf -
</pre>
<p>
To unpack .zip files:
</p>
<pre>
unzip MesaLib-x.y.z.zip
</pre>
<h1>Contents</h1>
<p>
After unpacking you'll have these files and directories (among others):
</p>
<pre>
Makefile - top-level Makefile for most systems
configs/ - makefile parameter files for various systems
include/ - GL header (include) files
bin/ - shell scripts for making shared libraries, etc
docs/ - documentation
src/ - source code for libraries
src/mesa - sources for the main Mesa library and device drivers
src/gallium - sources for Gallium and Gallium drivers
src/glx - sources for building libGL with full GLX and DRI support
</pre>
<p>
Proceed to the <a href="install.html">compilation and installation
instructions</a>.
</p>
<h1>Demos, GLUT, and GLU</h1>
<p>
A package of SGI's GLU library is available
<a href="ftp://ftp.freedesktop.org/pub/mesa/glu/">here</a>
</p>
<p>
A package of Mark Kilgard's GLUT library is available
<a href="ftp://ftp.freedesktop.org/pub/mesa/glut/">here</a>
</p>
<p>
The Mesa demos collection is available
<a href="ftp://ftp.freedesktop.org/pub/mesa/demos/">here</a>
</p>
<p>
In the past, GLUT, GLU and the Mesa demos were released in conjunction with
Mesa releases. But since GLUT, GLU and the demos change infrequently, they
were split off into their own git repositories:
<a href="http://cgit.freedesktop.org/mesa/glut/">GLUT</a>,
<a href="http://cgit.freedesktop.org/mesa/glu/">GLU</a> and
<a href="http://cgit.freedesktop.org/mesa/demos/">Demos</a>,
</p>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa EGL</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Mesa EGL</h1>
<p>The current version of EGL in Mesa implements EGL 1.4. More information
about EGL can be found at
<a href="http://www.khronos.org/egl/">
http://www.khronos.org/egl/</a>.</p>
<p>The Mesa's implementation of EGL uses a driver architecture. The main
library (<code>libEGL</code>) is window system neutral. It provides the EGL
API entry points and helper functions for use by the drivers. Drivers are
dynamically loaded by the main library and most of the EGL API calls are
directly dispatched to the drivers.</p>
<p>The driver in use decides the window system to support.</p>
<h2>Build EGL</h2>
<ol>
<li>
<p>Run <code>configure</code> with the desired client APIs and enable
the driver for your hardware. For example</p>
<pre>
$ ./configure --enable-gles1 --enable-gles2 \
--with-dri-drivers=... \
--with-gallium-drivers=...
</pre>
<p>The main library and OpenGL is enabled by default. The first two options
above enables <a href="opengles.html">OpenGL ES 1.x and 2.x</a>. The last two
options enables the listed classic and and Gallium drivers respectively.</p>
</li>
<li>Build and install Mesa as usual.</li>
</ol>
<p>In the given example, it will build and install <code>libEGL</code>,
<code>libGL</code>, <code>libGLESv1_CM</code>, <code>libGLESv2</code>, and one
or more EGL drivers.</p>
<h3>Configure Options</h3>
<p>There are several options that control the build of EGL at configuration
time</p>
<dl>
<dt><code>--enable-egl</code></dt>
<dd>
<p>By default, EGL is enabled. When disabled, the main library and the drivers
will not be built.</p>
</dd>
<dt><code>--with-egl-driver-dir</code></dt>
<dd>
<p>The directory EGL drivers should be installed to. If not specified, EGL
drivers will be installed to <code>${libdir}/egl</code>.</p>
</dd>
<dt><code>--enable-gallium-egl</code></dt>
<dd>
<p>Enable the optional <code>egl_gallium</code> driver.</p>
</dd>
<dt><code>--with-egl-platforms</code></dt>
<dd>
<p>List the platforms (window systems) to support. Its argument is a comma
separated string such as <code>--with-egl-platforms=x11,drm</code>. It decides
the platforms a driver may support. The first listed platform is also used by
the main library to decide the native platform: the platform the EGL native
types such as <code>EGLNativeDisplayType</code> or
<code>EGLNativeWindowType</code> defined for.</p>
<p>The available platforms are <code>x11</code>, <code>drm</code>,
<code>fbdev</code>, and <code>gdi</code>. The <code>gdi</code> platform can
only be built with SCons. Unless for special needs, the build system should
select the right platforms automatically.</p>
</dd>
<dt><code>--enable-gles1</code></dt>
<dt><code>--enable-gles2</code></dt>
<dd>
<p>These options enable OpenGL ES support in OpenGL. The result is one big
internal library that supports multiple APIs.</p>
</dd>
<dt><code>--enable-shared-glapi</code></dt>
<dd>
<p>By default, <code>libGL</code> has its own copy of <code>libglapi</code>.
This options makes <code>libGL</code> use the shared <code>libglapi</code>. This
is required if applications mix OpenGL and OpenGL ES.</p>
</dd>
<dt><code>--enable-openvg</code></dt>
<dd>
<p>OpenVG must be explicitly enabled by this option.</p>
</dd>
</dl>
<h2>Use EGL</h2>
<h3>Demos</h3>
<p>There are demos for the client APIs supported by EGL. They can be found in
mesa/demos repository.</p>
<h3>Environment Variables</h3>
<p>There are several environment variables that control the behavior of EGL at
runtime</p>
<dl>
<dt><code>EGL_DRIVERS_PATH</code></dt>
<dd>
<p>By default, the main library will look for drivers in the directory where
the drivers are installed to. This variable specifies a list of
colon-separated directories where the main library will look for drivers, in
addition to the default directory. This variable is ignored for setuid/setgid
binaries.</p>
<p>This variable is usually set to test an uninstalled build. For example, one
may set</p>
<pre>
$ export LD_LIBRARY_PATH=$mesa/lib
$ export EGL_DRIVERS_PATH=$mesa/lib/egl
</pre>
<p>to test a build without installation</p>
</dd>
<dt><code>EGL_DRIVER</code></dt>
<dd>
<p>This variable specifies a full path to or the name of an EGL driver. It
forces the specified EGL driver to be loaded. It comes in handy when one wants
to test a specific driver. This variable is ignored for setuid/setgid
binaries.</p>
</dd>
<dt><code>EGL_PLATFORM</code></dt>
<dd>
<p>This variable specifies the native platform. The valid values are the same
as those for <code>--with-egl-platforms</code>. When the variable is not set,
the main library uses the first platform listed in
<code>--with-egl-platforms</code> as the native platform.</p>
<p>Extensions like <code>EGL_MESA_drm_display</code> define new functions to
create displays for non-native platforms. These extensions are usually used by
applications that support non-native platforms. Setting this variable is
probably required only for some of the demos found in mesa/demo repository.</p>
</dd>
<dt><code>EGL_LOG_LEVEL</code></dt>
<dd>
<p>This changes the log level of the main library and the drivers. The valid
values are: <code>debug</code>, <code>info</code>, <code>warning</code>, and
<code>fatal</code>.</p>
</dd>
<dt><code>EGL_SOFTWARE</code></dt>
<dd>
<p>For drivers that support both hardware and software rendering, setting this
variable to true forces the use of software rendering.</p>
</dd>
</dl>
<h2>EGL Drivers</h2>
<dl>
<dt><code>egl_dri2</code></dt>
<dd>
<p>This driver supports both <code>x11</code> and <code>drm</code> platforms.
It functions as a DRI driver loader. For <code>x11</code> support, it talks to
the X server directly using (XCB-)DRI2 protocol.</p>
<p>This driver can share DRI drivers with <code>libGL</code>.</p>
</dd>
<dt><code>egl_gallium</code></dt>
<dd>
<p>This driver is based on Gallium3D. It supports all rendering APIs and
hardware supported by Gallium3D. It is the only driver that supports OpenVG.
The supported platforms are X11, DRM, FBDEV, and GDI.</p>
<p>This driver comes with its own hardware drivers
(<code>pipe_&lt;hw&gt;</code>) and client API modules
(<code>st_&lt;api&gt;</code>).</p>
</dd>
<dt><code>egl_glx</code></dt>
<dd>
<p>This driver provides a wrapper to GLX. It uses exclusively GLX to implement
the EGL API. It supports both direct and indirect rendering when the GLX does.
It is accelerated when the GLX is. As such, it cannot provide functions that
is not available in GLX or GLX extensions.</p>
</dd>
</dl>
<h2>Packaging</h2>
<p>The ABI between the main library and its drivers are not stable. Nor is
there a plan to stabilize it at the moment. Of the EGL drivers,
<code>egl_gallium</code> has its own hardware drivers and client API modules.
They are considered internal to <code>egl_gallium</code> and there is also no
stable ABI between them. These should be kept in mind when packaging for
distribution.</p>
<p>Generally, <code>egl_dri2</code> is preferred over <code>egl_gallium</code>
when the system already has DRI drivers. As <code>egl_gallium</code> is loaded
before <code>egl_dri2</code> when both are available, <code>egl_gallium</code>
is disabled by default.</p>
<h2>Developers</h2>
<p>The sources of the main library and the classic drivers can be found at
<code>src/egl/</code>. The sources of the <code>egl</code> state tracker can
be found at <code>src/gallium/state_trackers/egl/</code>.</p>
<p>The suggested way to learn to write a EGL driver is to see how other drivers
are written. <code>egl_glx</code> should be a good reference. It works in any
environment that has GLX support, and it is simpler than most drivers.</p>
<h3>Lifetime of Display Resources</h3>
<p>Contexts and surfaces are examples of display resources. They might live
longer than the display that creates them.</p>
<p>In EGL, when a display is terminated through <code>eglTerminate</code>, all
display resources should be destroyed. Similarly, when a thread is released
through <code>eglReleaseThread</code>, all current display resources should be
released. Another way to destroy or release resources is through functions
such as <code>eglDestroySurface</code> or <code>eglMakeCurrent</code>.</p>
<p>When a resource that is current to some thread is destroyed, the resource
should not be destroyed immediately. EGL requires the resource to live until
it is no longer current. A driver usually calls
<code>eglIs&lt;Resource&gt;Bound</code> to check if a resource is bound
(current) to any thread in the destroy callbacks. If it is still bound, the
resource is not destroyed.</p>
<p>The main library will mark destroyed current resources as unlinked. In a
driver's <code>MakeCurrent</code> callback,
<code>eglIs&lt;Resource&gt;Linked</code> can then be called to check if a newly
released resource is linked to a display. If it is not, the last reference to
the resource is removed and the driver should destroy the resource. But it
should be careful here because <code>MakeCurrent</code> might be called with an
uninitialized display.</p>
<p>This is the only mechanism provided by the main library to help manage the
resources. The drivers are responsible to the correct behavior as defined by
EGL.</p>
<h3><code>EGL_RENDER_BUFFER</code></h3>
<p>In EGL, the color buffer a context should try to render to is decided by the
binding surface. It should try to render to the front buffer if the binding
surface has <code>EGL_RENDER_BUFFER</code> set to
<code>EGL_SINGLE_BUFFER</code>; If the same context is later bound to a
surface with <code>EGL_RENDER_BUFFER</code> set to
<code>EGL_BACK_BUFFER</code>, the context should try to render to the back
buffer. However, the context is allowed to make the final decision as to which
color buffer it wants to or is able to render to.</p>
<p>For pbuffer surfaces, the render buffer is always
<code>EGL_BACK_BUFFER</code>. And for pixmap surfaces, the render buffer is
always <code>EGL_SINGLE_BUFFER</code>. Unlike window surfaces, EGL spec
requires their <code>EGL_RENDER_BUFFER</code> values to be honored. As a
result, a driver should never set <code>EGL_PIXMAP_BIT</code> or
<code>EGL_PBUFFER_BIT</code> bits of a config if the contexts created with the
config won't be able to honor the <code>EGL_RENDER_BUFFER</code> of pixmap or
pbuffer surfaces.</p>
<p>It should also be noted that pixmap and pbuffer surfaces are assumed to be
single-buffered, in that <code>eglSwapBuffers</code> has no effect on them. It
is desirable that a driver allocates a private color buffer for each pbuffer
surface created. If the window system the driver supports has native pbuffers,
or if the native pixmaps have more than one color buffers, the driver should
carefully attach the native color buffers to the EGL surfaces, re-route them if
required.</p>
<p>There is no defined behavior as to, for example, how
<code>glDrawBuffer</code> interacts with <code>EGL_RENDER_BUFFER</code>. Right
now, it is desired that the draw buffer in a client API be fixed for pixmap and
pbuffer surfaces. Therefore, the driver is responsible to guarantee that the
client API renders to the specified render buffer for pixmap and pbuffer
surfaces.</p>
<h3><code>EGLDisplay</code> Mutex</h3>
The <code>EGLDisplay</code> will be locked before calling any of the dispatch
functions (well, except for GetProcAddress which does not take an
<code>EGLDisplay</code>). This guarantees that the same dispatch function will
not be called with the sample display at the same time. If a driver has access
to an <code>EGLDisplay</code> without going through the EGL APIs, the driver
should as well lock the display before using it.
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Environment Variables</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Environment Variables</h1>
<p>
Normally, no environment variables need to be set. Most of the environment
variables used by Mesa/Gallium are for debugging purposes, but they can
sometimes be useful for debugging end-user issues.
</p>
<h2>LibGL environment variables</h2>
<ul>
<li>LIBGL_DEBUG - If defined debug information will be printed to stderr.
If set to 'verbose' additional information will be printed.
<li>LIBGL_DRIVERS_PATH - colon-separated list of paths to search for DRI drivers
<li>LIBGL_ALWAYS_INDIRECT - forces an indirect rendering context/connection.
<li>LIBGL_ALWAYS_SOFTWARE - if set, always use software rendering
<li>LIBGL_NO_DRAWARRAYS - if set do not use DrawArrays GLX protocol (for debugging)
<li>LIBGL_SHOW_FPS - print framerate to stdout based on the number of glXSwapBuffers
calls per second.
</ul>
<h2>Core Mesa environment variables</h2>
<ul>
<li>MESA_NO_ASM - if set, disables all assembly language optimizations
<li>MESA_NO_MMX - if set, disables Intel MMX optimizations
<li>MESA_NO_3DNOW - if set, disables AMD 3DNow! optimizations
<li>MESA_NO_SSE - if set, disables Intel SSE optimizations
<li>MESA_DEBUG - if set, error messages are printed to stderr. For example,
if the application generates a GL_INVALID_ENUM error, a corresponding error
message indicating where the error occurred, and possibly why, will be
printed to stderr.<br>
If the value of MESA_DEBUG is 'FP' floating point arithmetic errors will
generate exceptions.
<li>MESA_LOG_FILE - specifies a file name for logging all errors, warnings,
etc., rather than stderr
<li>MESA_TEX_PROG - if set, implement conventional texture env modes with
fragment programs (intended for developers only)
<li>MESA_TNL_PROG - if set, implement conventional vertex transformation
operations with vertex programs (intended for developers only).
Setting this variable automatically sets the MESA_TEX_PROG variable as well.
<li>MESA_EXTENSION_OVERRIDE - can be used to enable/disable extensions.
A value such as "GL_EXT_foo -GL_EXT_bar" will enable the GL_EXT_foo extension
and disable the GL_EXT_bar extension.
<li>MESA_EXTENSION_MAX_YEAR - The GL_EXTENSIONS string returned by Mesa is sorted
by extension year.
If this variable is set to year X, only extensions defined on or before year
X will be reported.
This is to work-around a bug in some games where the extension string is
copied into a fixed-size buffer without truncating.
If the extension string is too long, the buffer overrun can cause the game
to crash.
This is a work-around for that.
<li>MESA_GL_VERSION_OVERRIDE - changes the value returned by
glGetString(GL_VERSION) and possibly the GL API type.
<ul>
<li> The format should be MAJOR.MINOR[FC]
<li> FC is an optional suffix that indicates a forward compatible context.
This is only valid for versions &gt;= 3.0.
<li> GL versions &lt; 3.0 are set to a compatibility (non-Core) profile
<li> GL versions = 3.0, see below
<li> GL versions &gt; 3.0 are set to a Core profile
<li> Examples: 2.1, 3.0, 3.0FC, 3.1, 3.1FC
<ul>
<li> 2.1 - select a compatibility (non-Core) profile with GL version 2.1
<li> 3.0 - select a compatibility (non-Core) profile with GL version 3.0
<li> 3.0FC - select a Core+Forward Compatible profile with GL version 3.0
<li> 3.1 - select a Core profile with GL version 3.1
<li> 3.1FC - select a Core+Forward Compatible profile with GL version 3.1
</ul>
<li> Mesa may not really implement all the features of the given version.
(for developers only)
</ul>
<li>MESA_GLSL_VERSION_OVERRIDE - changes the value returned by
glGetString(GL_SHADING_LANGUAGE_VERSION). Valid values are integers, such as
"130". Mesa will not really implement all the features of the given language version
if it's higher than what's normally reported. (for developers only)
<li>MESA_GLSL - <a href="shading.html#envvars">shading language compiler options</a>
</ul>
<h2>Mesa Xlib driver environment variables</h2>
<p>
The following are only applicable to the Mesa Xlib software driver.
See the <a href="xlibdriver.html">Xlib software driver page</a> for details.
</p>
<ul>
<li>MESA_RGB_VISUAL - specifies the X visual and depth for RGB mode
<li>MESA_CI_VISUAL - specifies the X visual and depth for CI mode
<li>MESA_BACK_BUFFER - specifies how to implement the back color buffer,
either "pixmap" or "ximage"
<li>MESA_GAMMA - gamma correction coefficients for red, green, blue channels
<li>MESA_XSYNC - enable synchronous X behavior (for debugging only)
<li>MESA_GLX_FORCE_CI - if set, force GLX to treat 8bpp visuals as CI visuals
<li>MESA_GLX_FORCE_ALPHA - if set, forces RGB windows to have an alpha channel.
<li>MESA_GLX_DEPTH_BITS - specifies default number of bits for depth buffer.
<li>MESA_GLX_ALPHA_BITS - specifies default number of bits for alpha channel.
</ul>
<h2>i945/i965 driver environment variables (non-Gallium)</h2>
<ul>
<li>INTEL_NO_HW - if set to 1, prevents batches from being submitted to the hardware.
This is useful for debugging hangs, etc.</li>
<li>INTEL_DEBUG - a comma-separated list of named flags, which do various things:
<ul>
<li>tex - emit messages about textures.</li>
<li>state - emit messages about state flag tracking</li>
<li>blit - emit messages about blit operations</li>
<li>miptree - emit messages about miptrees</li>
<li>perf - emit messages about performance issues</li>
<li>perfmon - emit messages about AMD_performance_monitor</li>
<li>bat - emit batch information</li>
<li>pix - emit messages about pixel operations</li>
<li>buf - emit messages about buffer objects</li>
<li>reg - emit messages about regions</li>
<li>fbo - emit messages about framebuffers</li>
<li>fs - dump shader assembly for fragment shaders</li>
<li>gs - dump shader assembly for geometry shaders</li>
<li>sync - emit messages about synchronization</li>
<li>prim - emit messages about drawing primitives</li>
<li>vert - emit messages about vertex assembly</li>
<li>dri - emit messages about the DRI interface</li>
<li>sf - emit messages about the strips &amp; fans unit (for old gens, includes the SF program)</li>
<li>stats - enable statistics counters. you probably actually want perfmon or intel_gpu_top instead.</li>
<li>urb - emit messages about URB setup</li>
<li>vs - dump shader assembly for vertex shaders</li>
<li>clip - emit messages about the clip unit (for old gens, includes the CLIP program)</li>
<li>aub - dump batches into an AUB trace for use with simulation tools</li>
<li>shader_time - record how much GPU time is spent in each shader</li>
<li>no16 - suppress generation of 16-wide fragment shaders. useful for debugging broken shaders</li>
<li>blorp - emit messages about the blorp operations (blits &amp; clears)</li>
<li>nodualobj - suppress generation of dual-object geometry shader code</li>
</ul>
</ul>
<h2>Radeon driver environment variables (radeon, r200, and r300g)</h2>
<ul>
<li>RADEON_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
</ul>
<h2>EGL environment variables</h2>
<p>
Mesa EGL supports different sets of environment variables. See the
<a href="egl.html">Mesa EGL</a> page for the details.
</p>
<h2>Gallium environment variables</h2>
<ul>
<li>GALLIUM_HUD - draws various information on the screen, like framerate,
cpu load, driver statistics, performance counters, etc.
Set GALLIUM_HUD=help and run e.g. glxgears for more info.
<li>GALLIUM_LOG_FILE - specifies a file for logging all errors, warnings, etc.
rather than stderr.
<li>GALLIUM_PRINT_OPTIONS - if non-zero, print all the Gallium environment
variables which are used, and their current values.
<li>GALLIUM_DUMP_CPU - if non-zero, print information about the CPU on start-up
<li>TGSI_PRINT_SANITY - if set, do extra sanity checking on TGSI shaders and
print any errors to stderr.
<LI>DRAW_FSE - ???
<LI>DRAW_NO_FSE - ???
<li>DRAW_USE_LLVM - if set to zero, the draw module will not use LLVM to execute
shaders, vertex fetch, etc.
<li>ST_DEBUG - controls debug output from the Mesa/Gallium state tracker.
Setting to "tgsi", for example, will print all the TGSI shaders.
See src/mesa/state_tracker/st_debug.c for other options.
</ul>
<h3>Softpipe driver environment variables</h3>
<ul>
<li>SOFTPIPE_DUMP_FS - if set, the softpipe driver will print fragment shaders
to stderr
<li>SOFTPIPE_DUMP_GS - if set, the softpipe driver will print geometry shaders
to stderr
<li>SOFTPIPE_NO_RAST - if set, rasterization is no-op'd. For profiling purposes.
<li>SOFTPIPE_USE_LLVM - if set, the softpipe driver will try to use LLVM JIT for
vertex shading processing.
</ul>
<h3>LLVMpipe driver environment variables</h3>
<ul>
<li>LP_NO_RAST - if set LLVMpipe will no-op rasterization
<li>LP_DEBUG - a comma-separated list of debug options is accepted. See the
source code for details.
<li>LP_PERF - a comma-separated list of options to selectively no-op various
parts of the driver. See the source code for details.
<li>LP_NUM_THREADS - an integer indicating how many threads to use for rendering.
Zero turns of threading completely. The default value is the number of CPU
cores present.
</ul>
<h3>VMware SVGA driver environment variables</h3>
<ul>
<li>SVGA_FORCE_SWTNL - force use of software vertex transformation
<li>SVGA_NO_SWTNL - don't allow software vertex transformation fallbacks
(will often result in incorrect rendering).
<li>SVGA_DEBUG - for dumping shaders, constant buffers, etc. See the code
for details.
<li>See the driver code for other, lesser-used variables.
</ul>
<p>
Other Gallium drivers have their own environment variables. These may change
frequently so the source code should be consulted for details.
</p>
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<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Extensions</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Mesa Extensions</h1>
<p>
A number of extensions have been developed especially for Mesa.
The specifications follow.
</p>
<ul>
<li><a href="specs/MESA_agp_offset.spec">MESA_agp_offset.spec</a>
<li><a href="specs/MESA_copy_sub_buffer.spec">MESA_copy_sub_buffer.spec</a>
<li><a href="specs/MESA_drm_image.spec">MESA_drm_image.spec</a>
<li><a href="specs/MESA_multithread_makecurrent.spec">MESA_multithread_makecurrent.spec</a>
<li><a href="specs/OLD/MESA_packed_depth_stencil.spec">MESA_packed_depth_stencil.spec</a> (obsolete)
<li><a href="specs/MESA_pack_invert.spec">MESA_pack_invert.spec</a>
<li><a href="specs/MESA_pixmap_colormap.spec">MESA_pixmap_colormap.spec</a>
<li><a href="specs/OLD/MESA_program_debug.spec">MESA_program_debug.spec</a> (obsolete)
<li><a href="specs/MESA_release_buffers.spec">MESA_release_buffers.spec</a>
<li><a href="specs/OLD/MESA_resize_buffers.spec">MESA_resize_buffers.spec</a> (obsolete)
<li><a href="specs/MESA_set_3dfx_mode.spec">MESA_set_3dfx_mode.spec</a>
<li><a href="specs/MESA_shader_debug.spec">MESA_shader_debug.spec</a>
<li><a href="specs/OLD/MESA_sprite_point.spec">MESA_sprite_point.spec</a> (obsolete)
<li><a href="specs/MESA_swap_control.spec">MESA_swap_control.spec</a>
<li><a href="specs/MESA_swap_frame_usage.spec">MESA_swap_frame_usage.spec</a>
<li><a href="specs/MESA_texture_array.spec">MESA_texture_array.spec</a>
<li><a href="specs/MESA_texture_signed_rgba.spec">MESA_texture_signed_rgba.spec</a>
<li><a href="specs/OLD/MESA_trace.spec">MESA_trace.spec</a> (obsolete)
<li><a href="specs/MESA_window_pos.spec">MESA_window_pos.spec</a>
<li><a href="specs/MESA_ycbcr_texture.spec">MESA_ycbcr_texture.spec</a>
<li><a href="specs/WL_bind_wayland_display.spec">WL_bind_wayland_display.spec</a>
</ul>
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<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa FAQ</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<center>
<h1>Mesa Frequently Asked Questions</h1>
Last updated: 9 October 2012
</center>
<br>
<br>
<h2>Index</h2>
<a href="#part1">1. High-level Questions and Answers</a>
<br>
<a href="#part2">2. Compilation and Installation Problems</a>
<br>
<a href="#part3">3. Runtime / Rendering Problems</a>
<br>
<a href="#part4">4. Developer Questions</a>
<br>
<br>
<br>
<h1 id="part1">1. High-level Questions and Answers</h1>
<h2>1.1 What is Mesa?</h2>
<p>
Mesa is an open-source implementation of the OpenGL specification.
OpenGL is a programming library for writing interactive 3D applications.
See the <a href="http://www.opengl.org/">OpenGL website</a> for more
information.
</p>
<p>
Mesa 9.x supports the OpenGL 3.1 specification.
</p>
<h2>1.2 Does Mesa support/use graphics hardware?</h2>
<p>
Yes. Specifically, Mesa serves as the OpenGL core for the open-source DRI
drivers for X.org.
</p>
<ul>
<li>See the <a href="http://dri.freedesktop.org/">DRI website</a>
for more information.</li>
<li>See <a href="http://intellinuxgraphics.org">intellinuxgraphics.org</a>
for more information about Intel drivers.</li>
<li>See <a href="http://nouveau.freedesktop.org">nouveau.freedesktop.org</a>
for more information about Nouveau drivers.</li>
<li>See <a href="http://www.x.org/wiki/RadeonFeature">www.x.org/wiki/RadeonFeature</a>
for more information about Radeon drivers.</li>
</ul>
<h2>1.3 What purpose does Mesa serve today?</h2>
<p>
Hardware-accelerated OpenGL implementations are available for most popular
operating systems today.
Still, Mesa serves at least these purposes:
</p>
<ul>
<li>Mesa is used as the core of the open-source X.org DRI
hardware drivers.
</li>
<li>Mesa is quite portable and allows OpenGL to be used on systems
that have no other OpenGL solution.
</li>
<li>Software rendering with Mesa serves as a reference for validating the
hardware drivers.
</li>
<li>A software implementation of OpenGL is useful for experimentation,
such as testing new rendering techniques.
</li>
<li>Mesa can render images with deep color channels: 16-bit integer
and 32-bit floating point color channels are supported.
This capability is only now appearing in hardware.
</li>
<li>Mesa's internal limits (max lights, clip planes, texture size, etc) can be
changed for special needs (hardware limits are hard to overcome).
</li>
</ul>
<h2>1.4 What's the difference between "Stand-Alone" Mesa and the DRI drivers?</h2>
<p>
<em>Stand-alone Mesa</em> is the original incarnation of Mesa.
On systems running the X Window System it does all its rendering through
the Xlib API:
</p>
<ul>
<li>The GLX API is supported, but it's really just an emulation of the
real thing.
<li>The GLX wire protocol is not supported and there's no OpenGL extension
loaded by the X server.
<li>There is no hardware acceleration.
<li>The OpenGL library, libGL.so, contains everything (the programming API,
the GLX functions and all the rendering code).
</ul>
<p>
Alternately, Mesa acts as the core for a number of OpenGL hardware drivers
within the DRI (Direct Rendering Infrastructure):
<ul>
<li>The libGL.so library provides the GL and GLX API functions, a GLX
protocol encoder, and a device driver loader.
<li>The device driver modules (such as r200_dri.so) contain a built-in
copy of the core Mesa code.
<li>The X server loads the GLX module.
The GLX module decodes incoming GLX protocol and dispatches the commands
to a rendering module.
For the DRI, this module is basically a software Mesa renderer.
</ul>
<h2>1.5 How do I upgrade my DRI installation to use a new Mesa release?</h2>
<p>
This wasn't easy in the past.
Now, the DRI drivers are included in the Mesa tree and can be compiled
separately from the X server.
Just follow the Mesa <a href="install.html">compilation instructions</a>.
</p>
<h2>1.6 Are there other open-source implementations of OpenGL?</h2>
<p>
Yes, SGI's <a href="http://oss.sgi.com/projects/ogl-sample/index.html">
OpenGL Sample Implementation (SI)</a> is available.
The SI was written during the time that OpenGL was originally designed.
Unfortunately, development of the SI has stagnated.
Mesa is much more up to date with modern features and extensions.
</p>
<p>
<a href="http://sourceforge.net/projects/ogl-es/">Vincent</a> is
an open-source implementation of OpenGL ES for mobile devices.
<p>
<a href="http://www.dsbox.com/minigl.html">miniGL</a>
is a subset of OpenGL for PalmOS devices.
<p>
<a href="http://bellard.org/TinyGL/">TinyGL</a>
is a subset of OpenGL.
</p>
<p>
<a href="http://sourceforge.net/projects/softgl/">SoftGL</a>
is an OpenGL subset for mobile devices.
</p>
<p>
<a href="http://chromium.sourceforge.net/">Chromium</a>
isn't a conventional OpenGL implementation (it's layered upon OpenGL),
but it does export the OpenGL API. It allows tiled rendering, sort-last
rendering, etc.
</p>
<p>
<a href="http://www.ticalc.org/archives/files/fileinfo/361/36173.html">ClosedGL</a>
is an OpenGL subset library for TI graphing calculators.
</p>
<p>
There may be other open OpenGL implementations, but Mesa is the most
popular and feature-complete.
</p>
<br>
<br>
<h1 id="part2">2. Compilation and Installation Problems</h1>
<h2>2.1 What's the easiest way to install Mesa?</h2>
<p>
If you're using a Linux-based system, your distro CD most likely already
has Mesa packages (like RPM or DEB) which you can easily install.
</p>
<h2>2.2 I get undefined symbols such as bgnpolygon, v3f, etc...</h2>
<p>
You're application is written in IRIS GL, not OpenGL.
IRIS GL was the predecessor to OpenGL and is a different thing (almost)
entirely.
Mesa's not the solution.
</p>
<h2>2.3 Where is the GLUT library?</h2>
<p>
GLUT (OpenGL Utility Toolkit) is no longer in the separate MesaGLUT-x.y.z.tar.gz file.
If you don't already have GLUT installed, you should grab
<a href="http://freeglut.sourceforge.net/">freeglut</a>.
</p>
<h2>2.4 Where is the GLw library?</h2>
<p>
GLw (OpenGL widget library) is now available from a separate <a href="http://cgit.freedesktop.org/mesa/glw/">git repository</a>. Unless you're using very old Xt/Motif applications with OpenGL, you shouldn't need it.
</p>
<h2>2.5 What's the proper place for the libraries and headers?</h2>
<p>
On Linux-based systems you'll want to follow the
<a href="http://oss.sgi.com/projects/ogl-sample/ABI/index.html">Linux ABI</a> standard.
Basically you'll want the following:
</p>
<ul>
<li>/usr/include/GL/gl.h - the main OpenGL header
</li><li>/usr/include/GL/glu.h - the OpenGL GLU (utility) header
</li><li>/usr/include/GL/glx.h - the OpenGL GLX header
</li><li>/usr/include/GL/glext.h - the OpenGL extensions header
</li><li>/usr/include/GL/glxext.h - the OpenGL GLX extensions header
</li><li>/usr/include/GL/osmesa.h - the Mesa off-screen rendering header
</li><li>/usr/lib/libGL.so - a symlink to libGL.so.1
</li><li>/usr/lib/libGL.so.1 - a symlink to libGL.so.1.xyz
</li><li>/usr/lib/libGL.so.xyz - the actual OpenGL/Mesa library. xyz denotes the
Mesa version number.
</li></ul>
<p>
When configuring Mesa, there are three autoconf options that affect the install
location that you should take care with: <code>--prefix</code>,
<code>--libdir</code>, and <code>--with-dri-driverdir</code>. To install Mesa
into the system location where it will be available for all programs to use, set
<code>--prefix=/usr</code>. Set <code>--libdir</code> to where your Linux
distribution installs system libraries, usually either <code>/usr/lib</code> or
<code>/usr/lib64</code>. Set <code>--with-dri-driverdir</code> to the directory
where your Linux distribution installs DRI drivers. To find your system's DRI
driver directory, try executing <code>find /usr -type d -name dri</code>. For
example, if the <code>find</code> command listed <code>/usr/lib64/dri</code>,
then set <code>--with-dri-driverdir=/usr/lib64/dri</code>.
</p>
<p>
After determining the correct values for the install location, configure Mesa
with <code>./configure --prefix=/usr --libdir=xxx --with-dri-driverdir=xxx</code>
and then install with <code>sudo make install</code>.
</p>
<br>
<br>
<h1 id="part3">3. Runtime / Rendering Problems</h1>
<h2>3.1 Rendering is slow / why isn't my graphics hardware being used?</h2>
<p>
If Mesa can't use its hardware accelerated drivers it falls back on one of its software renderers.
(eg. classic swrast, softpipe or llvmpipe)
</p>
<p>
You can run the <code>glxinfo</code> program to learn about your OpenGL
library.
Look for the <code>OpenGL vendor</code> and <code>OpenGL renderer</code> values.
That will identify who's OpenGL library with which driver you're using and what sort of
hardware it has detected.
</p>
<p>
If you're using a hardware accelerated driver you want <code>direct rendering: Yes</code>.
</p>
<p>
If your DRI-based driver isn't working, go to the
<a href="http://dri.freedesktop.org/">DRI website</a> for trouble-shooting information.
</p>
<h2>3.2 I'm seeing errors in depth (Z) buffering. Why?</h2>
<p>
Make sure the ratio of the far to near clipping planes isn't too great.
Look
<a href="http://www.opengl.org/resources/faq/technical/depthbuffer.htm#0040">here</a>
for details.
</p>
<p>
Mesa uses a 16-bit depth buffer by default which is smaller and faster
to clear than a 32-bit buffer but not as accurate.
If you need a deeper you can modify the parameters to
<code> glXChooseVisual</code> in your code.
</p>
<h2>3.3 Why Isn't depth buffering working at all?</h2>
<p>
Be sure you're requesting a depth buffered-visual. If you set the MESA_DEBUG
environment variable it will warn you about trying to enable depth testing
when you don't have a depth buffer.
</p>
<p>Specifically, make sure <code>glutInitDisplayMode</code> is being called
with <code>GLUT_DEPTH</code> or <code>glXChooseVisual</code> is being
called with a non-zero value for GLX_DEPTH_SIZE.
</p>
<p>This discussion applies to stencil buffers, accumulation buffers and
alpha channels too.
</p>
<h2>3.4 Why does glGetString() always return NULL?</h2>
<p>
Be sure you have an active/current OpenGL rendering context before
calling glGetString.
</p>
<h2>3.5 GL_POINTS and GL_LINES don't touch the right pixels</h2>
<p>
If you're trying to draw a filled region by using GL_POINTS or GL_LINES
and seeing holes or gaps it's because of a float-to-int rounding problem.
But this is not a bug.
See Appendix H of the OpenGL Programming Guide - "OpenGL Correctness Tips".
Basically, applying a translation of (0.375, 0.375, 0.0) to your coordinates
will fix the problem.
</p>
<h2>3.6 How can I change the maximum framebuffer size in Mesa's
<tt>swrast</tt> backend?</h2>
<p>
These can be overridden by using the <tt>--with-max-width</tt> and
<tt>--with-max-height</tt> options. The two need not be equal.
</p><p>
Do note that Mesa uses these values to size some internal buffers,
so increasing these sizes will cause Mesa to require additional
memory. Furthermore, increasing these limits beyond <tt>4096</tt>
may introduce rasterization artifacts; see the leading comments in
<tt>src/mesa/swrast/s_tritemp.h</tt>.
</p>
<br>
<br>
<h1 id="part4">4. Developer Questions</h1>
<h2>4.1 How can I contribute?</h2>
<p>
First, join the <a href="lists.html">mesa-dev mailing list</a>.
That's where Mesa development is discussed.
</p>
<p>
The <a href="http://www.opengl.org/documentation">
OpenGL Specification</a> is the bible for OpenGL implementation work.
You should read it.
</p>
<p>Most of the Mesa development work involves implementing new OpenGL
extensions, writing hardware drivers (for the DRI), and code optimization.
</p>
<h2>4.2 How do I write a new device driver?</h2>
<p>
Unfortunately, writing a device driver isn't easy.
It requires detailed understanding of OpenGL, the Mesa code, and your
target hardware/operating system.
3D graphics are not simple.
</p>
<p>
The best way to get started is to use an existing driver as your starting
point.
For a classic hardware driver, the i965 driver is a good example.
For a Gallium3D hardware driver, the r300g, r600g and the i915g are good examples.
</p>
<p>The DRI website has more information about writing hardware drivers.
The process isn't well document because the Mesa driver interface changes
over time, and we seldom have spare time for writing documentation.
That being said, many people have managed to figure out the process.
</p>
<p>
Joining the appropriate mailing lists and asking questions (and searching
the archives) is a good way to get information.
</p>
<h2>4.3 Why isn't GL_EXT_texture_compression_s3tc implemented in Mesa?</h2>
<p>
The <a href="http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt">specification for the extension</a>
indicates that there are intellectual property (IP) and/or patent issues
to be dealt with.
</p>
<p>We've been unsuccessful in getting a response from S3 (or whoever owns
the IP nowadays) to indicate whether or not an open source project can
implement the extension (specifically the compression/decompression
algorithms).
</p>
<p>
In the mean time, a 3rd party <a href="http://dri.freedesktop.org/wiki/S3TC">
plug-in library</a> is available.
</p>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Help Wanted</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Help Wanted / To-Do List</h1>
<p>
We can always use more help with the Mesa project.
Here are some specific ideas and areas where help would be appreciated:
</p>
<ol>
<li>
<b>Driver patching and testing.</b>
Patches are often posted to the <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev">mesa-dev mailing list</a>, but aren't
immediately checked into git because not enough people are testing them.
Just applying patches, testing and reporting back is helpful.
<li>
<b>Driver debugging.</b>
There are plenty of open bugs in the <a href="https://bugs.freedesktop.org/describecomponents.cgi?product=Mesa">bug database</a>.
<li>
<b>Remove aliasing warnings.</b>
Enable gcc -Wstrict-aliasing=2 -fstrict-aliasing and track down aliasing
issues in the code.
<li>
<b>Windows driver building, testing and maintenance.</b>
Fixing MSVC builds.
<li>
<b>Contribute more tests to
<a href="http://piglit.freedesktop.org/">Piglit</a>.</b>
<li>
<b>Automatic testing.
</b>
It would be great if someone would set up an automated system for grabbing
the latest Mesa code and run tests (such as piglit) then report issues to
the mailing list.
</ol>
<p>
You can find some further To-do lists here:
</p>
<p>
<b>Common To-Do lists:</b>
</p>
<ul>
<li><a href="http://cgit.freedesktop.org/mesa/mesa/tree/docs/GL3.txt">
<b>GL3.txt</b></a> - Status of OpenGL 3.x / 4.x features in Mesa.</li>
<li><a href="http://dri.freedesktop.org/wiki/MissingFunctionality">
<b>MissingFunctionality</b></a> - Detailed information about missing OpenGL features.</li>
</ul>
<p>
<b>Driver specific To-Do lists:</b>
</p>
<ul>
<li><a href="http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/docs/llvm-todo.txt">
<b>LLVMpipe</b></a> - Software driver using LLVM for runtime code generation.</li>
<li><a href="http://dri.freedesktop.org/wiki/RadeonsiToDo">
<b>radeonsi</b></a> - Driver for AMD Southern Island.</li>
<li><a href="http://dri.freedesktop.org/wiki/R600ToDo">
<b>r600g</b></a> - Driver for ATI/AMD R600 - Northern Island.</li>
<li><a href="http://dri.freedesktop.org/wiki/R300ToDo">
<b>r300g</b></a> - Driver for ATI R300 - R500.</li>
<li><a href="http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/i915/TODO">
<b>i915g</b></a> - Driver for Intel i915/i945.</li>
</ul>
<p>
If you want to do something new in Mesa, first join the Mesa developer's
mailing list.
Then post a message to propose what you want to do, just to make sure
there's no issues.
</p>
<p>
Anyone is welcome to contribute code to the Mesa project.
By doing so, it's assumed that you agree to the code's licensing terms.
</p>
<p>
Finally:
</p>
<ol>
<li>Try to write high-quality code that follows the existing style.
<li>Use uniform indentation, write comments, use meaningful identifiers, etc.
<li>Test your code thoroughly. Include test programs if appropriate.
</ol>
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<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Compiling and Installing</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Compiling and Installing</h1>
<ol>
<li><a href="#prereq-general">Prerequisites for building</a>
<ul>
<li><a href="#prereq-general">General prerequisites</a>
<li><a href="#prereq-dri">For DRI and hardware acceleration</a>
</ul>
<li><a href="#autoconf">Building with autoconf (Linux/Unix/X11)</a>
<li><a href="#scons">Building with SCons (Windows/Linux)</a>
<li><a href="#other">Building for other systems</a>
<li><a href="#libs">Library Information</a>
<li><a href="#pkg-config">Building OpenGL programs with pkg-config</a>
</ol>
<h1 id="prereq-general">1. Prerequisites for building</h1>
<h2>1.1 General</h2>
<ul>
<li>lex / yacc - for building the GLSL compiler.
On Linux systems, flex and bison are used.
Versions 2.5.35 and 2.4.1, respectively, (or later) should work.
<br>
<br>
On Windows with MinGW, install flex and bison with:
<pre>mingw-get install msys-flex msys-bison</pre>
</li>
<li>python - Python is needed for building the Gallium components.
Version 2.6.4 or later should work.
<br>
<br>
To build OpenGL ES 1.1 and 2.0 you'll also need
<a href="http://xmlsoft.org/sources/win32/python/libxml2-python-2.7.7.win32-py2.7.exe">libxml2-python</a>.
</li>
</ul>
<h3 id="prereq-dri">1.2 For DRI and hardware acceleration</h3>
<p>
The following are required for DRI-based hardware acceleration with Mesa:
</p>
<ul>
<li><a href="http://xorg.freedesktop.org/releases/individual/proto/">
dri2proto</a> version 2.6 or later
<li><a href="http://dri.freedesktop.org/libdrm/">libDRM</a>
version 2.4.33 or later
<li>Xorg server version 1.5 or later
<li>Linux 2.6.28 or later
</ul>
<p>
If you're using a fedora distro the following command should install all
the needed dependencies:
</p>
<pre>
sudo yum install flex bison imake libtool xorg-x11-proto-devel libdrm-devel \
gcc-c++ xorg-x11-server-devel libXi-devel libXmu-devel libXdamage-devel git \
expat-devel llvm-devel
</pre>
<h1 id="autoconf">2. Building with autoconf (Linux/Unix/X11)</h1>
<p>
The primary method to build Mesa on Unix systems is with autoconf.
</p>
<p>
The general approach is the standard:
</p>
<pre>
./configure
make
sudo make install
</pre>
<p>
But please read the <a href="autoconf.html">detailed autoconf instructions</a>
for more details.
</p>
<h1 id="scons">3. Building with SCons (Windows/Linux)</h1>
<p>
To build Mesa with SCons on Linux or Windows do
</p>
<pre>
scons
</pre>
<p>
The build output will be placed in
build/<i>platform</i>-<i>machine</i>-<i>debug</i>/..., where <i>platform</i> is for
example linux or windows, <i>machine</i> is x86 or x86_64, optionally followed
by -debug for debug builds.
</p>
<p>
To build Mesa with SCons for Windows on Linux using the MinGW crosscompiler toolchain do
</p>
<pre>
scons platform=windows toolchain=crossmingw machine=x86 mesagdi libgl-gdi
</pre>
<p>
This will create:
</p>
<ul>
<li>build/windows-x86-debug/mesa/drivers/windows/gdi/opengl32.dll &mdash; Mesa + swrast, binary compatible with Windows's opengl32.dll
<li>build/windows-x86-debug/gallium/targets/libgl-gdi/opengl32.dll &mdash; Mesa + Gallium + softpipe, binary compatible with Windows's opengl32.dll
</ul>
<p>
Put them all in the same directory to test them.
</p>
<h1 id="other">4. Building for other systems</h1>
<p>
Documentation for other environments (some may be very out of date):
</p>
<ul>
<li><a href="README.VMS">README.VMS</a> - VMS
<li><a href="README.CYGWIN">README.CYGWIN</a> - Cygwin
<li><a href="README.WIN32">README.WIN32</a> - Win32
</ul>
<h1 id="libs">5. Library Information</h1>
<p>
When compilation has finished, look in the top-level <code>lib/</code>
(or <code>lib64/</code>) directory.
You'll see a set of library files similar to this:
</p>
<pre>
lrwxrwxrwx 1 brian users 10 Mar 26 07:53 libGL.so -> libGL.so.1*
lrwxrwxrwx 1 brian users 19 Mar 26 07:53 libGL.so.1 -> libGL.so.1.5.060100*
-rwxr-xr-x 1 brian users 3375861 Mar 26 07:53 libGL.so.1.5.060100*
lrwxrwxrwx 1 brian users 14 Mar 26 07:53 libOSMesa.so -> libOSMesa.so.6*
lrwxrwxrwx 1 brian users 23 Mar 26 07:53 libOSMesa.so.6 -> libOSMesa.so.6.1.060100*
-rwxr-xr-x 1 brian users 23871 Mar 26 07:53 libOSMesa.so.6.1.060100*
</pre>
<p>
<b>libGL</b> is the main OpenGL library (i.e. Mesa).
<br>
<b>libOSMesa</b> is the OSMesa (Off-Screen) interface library.
</p>
<p>
If you built the DRI hardware drivers, you'll also see the DRI drivers:
</p>
<pre>
-rwxr-xr-x 1 brian users 16895413 Jul 21 12:11 i915_dri.so
-rwxr-xr-x 1 brian users 16895413 Jul 21 12:11 i965_dri.so
-rwxr-xr-x 1 brian users 11849858 Jul 21 12:12 r200_dri.so
-rwxr-xr-x 1 brian users 11757388 Jul 21 12:12 radeon_dri.so
</pre>
<p>
If you built with Gallium support, look in lib/gallium/ for Gallium-based
versions of libGL and device drivers.
</p>
<h1 id="pkg-config">6. Building OpenGL programs with pkg-config</h1>
<p>
Running <code>make install</code> will install package configuration files
for the pkg-config utility.
</p>
<p>
When compiling your OpenGL application you can use pkg-config to determine
the proper compiler and linker flags.
</p>
<p>
For example, compiling and linking a GLUT application can be done with:
</p>
<pre>
gcc `pkg-config --cflags --libs glut` mydemo.c -o mydemo
</pre>
<br>
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<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Introduction</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Introduction</h1>
<p>
Mesa is an open-source implementation of the
<a href="http://www.opengl.org/">OpenGL</a> specification -
a system for rendering interactive 3D graphics.
</p>
<p>
A variety of device drivers allows Mesa to be used in many different
environments ranging from software emulation to complete hardware acceleration
for modern GPUs.
</p>
<p>
Mesa ties into several other open-source projects: the
<a href="http://dri.freedesktop.org/">Direct Rendering
Infrastructure</a> and <a href="http://x.org">X.org</a> to
provide OpenGL support to users of X on Linux, FreeBSD and other operating
systems.
</p>
<h1>Project History</h1>
<p>
The Mesa project was originally started by Brian Paul.
Here's a short history of the project.
</p>
<p>
August, 1993: I begin working on Mesa in my spare time. The project
has no name at that point. I was simply interested in writing a simple
3D graphics library that used the then-new OpenGL API. I was partially
inspired by the <em>VOGL</em> library which emulated a subset of IRIS GL.
I had been programming with IRIS GL since 1991.
</p>
<p>
November 1994: I contact SGI to ask permission to distribute my OpenGL-like
graphics library on the internet. SGI was generally receptive to the
idea and after negotiations with SGI's legal department, I get permission
to release it.
</p>
<p>
February 1995: Mesa 1.0 is released on the internet. I expected that
a few people would be interested in it, but not thousands.
I was soon receiving patches, new features and thank-you notes on a
daily basis. That encouraged me to continue working on Mesa. The
name Mesa just popped into my head one day. SGI had asked me not to use
the terms <em>"Open"</em> or <em>"GL"</em> in the project name and I didn't
want to make up a new acronym. Later, I heard of the Mesa programming
language and the Mesa spreadsheet for NeXTStep.
</p>
<p>
In the early days, OpenGL wasn't available on too many systems.
It even took a while for SGI to support it across their product line.
Mesa filled a big hole during that time.
For a lot of people, Mesa was their first introduction to OpenGL.
I think SGI recognized that Mesa actually helped to promote
the OpenGL API, so they didn't feel threatened by the project.
</p>
<p>
1995-1996: I continue working on Mesa both during my spare time and during
my work hours at the Space Science and Engineering Center at the University
of Wisconsin in Madison. My supervisor, Bill Hibbard, lets me do this because
Mesa is now being using for the <a href="http://www.ssec.wisc.edu/%7Ebillh/vis.html">Vis5D</a> project.
</p><p>
October 1996: Mesa 2.0 is released. It implements the OpenGL 1.1 specification.
</p>
<p>
March 1997: Mesa 2.2 is released. It supports the new 3dfx Voodoo graphics
card via the Glide library. It's the first really popular hardware OpenGL
implementation for Linux.
</p>
<p>
September 1998: Mesa 3.0 is released. It's the first publicly-available
implementation of the OpenGL 1.2 API.
</p>
<p>
March 1999: I attend my first OpenGL ARB meeting. I contribute to the
development of several official OpenGL extensions over the years.
</p>
<p>
September 1999: I'm hired by Precision Insight, Inc. Mesa is a key
component of 3D hardware acceleration in the new DRI project for XFree86.
Drivers for 3dfx, 3dLabs, Intel, Matrox and ATI hardware soon follow.
</p>
<p>
October 2001: Mesa 4.0 is released.
It implements the OpenGL 1.3 specification.
</p>
<p>
November 2001: I cofounded Tungsten Graphics, Inc. with Keith Whitwell,
Jens Owen, David Dawes and Frank LaMonica.
Tungsten Graphics was acquired by VMware in December 2008.
</p>
<p>
November 2002: Mesa 5.0 is released.
It implements the OpenGL 1.4 specification.
</p>
<p>
January 2003: Mesa 6.0 is released. It implements the OpenGL 1.5
specification as well as the GL_ARB_vertex_program and
GL_ARB_fragment_program extensions.
</p>
<p>
June 2007: Mesa 7.0 is released, implementing the OpenGL 2.1 specification
and OpenGL Shading Language.
</p>
<p>
2008: Keith Whitwell and other Tungsten Graphics employees develop
<a href="http://en.wikipedia.org/wiki/Gallium3D">Gallium</a>
- a new GPU abstraction layer. The latest Mesa drivers are based on
Gallium and other APIs such as OpenVG are implemented on top of Gallium.
</p>
<p>
February 2012: Mesa 8.0 is released, implementing the OpenGL 3.0 specification
and version 1.30 of the OpenGL Shading Language.
</p>
<p>
Ongoing: Mesa is the OpenGL implementation for several types of hardware
made by Intel, AMD and NVIDIA, plus the VMware virtual GPU.
There's also several software-based renderers: swrast (the legacy
Mesa rasterizer), softpipe (a gallium reference driver) and llvmpipe
(LLVM/JIT-based high-speed rasterizer).
Work continues on the drivers and core Mesa to implement newer versions
of the OpenGL specification.
</p>
<h1>Major Versions</h1>
<p>
This is a summary of the major versions of Mesa.
Mesa's major version number has been incremented whenever a new version
of the OpenGL specification is implemented.
</p>
<h2>Version 9.x features</h2>
<p>
Version 9.x of Mesa implements the OpenGL 3.1 API.
While the driver for Intel Sandy Bridge and Ivy Bridge is the only
driver to support OpenGL 3.1, many developers across the open-source
community contributed features required for OpenGL 3.1. The primary
features added since the Mesa 8.0 release are
GL_ARB_texture_buffer_object and GL_ARB_uniform_buffer_object.
</p>
<h2>Version 8.x features</h2>
<p>
Version 8.x of Mesa implements the OpenGL 3.0 API.
The developers at Intel deserve a lot of credit for implementing most
of the OpenGL 3.0 features in core Mesa, the GLSL compiler as well as
the i965 driver.
</p>
<h2>Version 7.x features</h2>
<p>
Version 7.x of Mesa implements the OpenGL 2.1 API. The main feature
of OpenGL 2.x is the OpenGL Shading Language.
</p>
<h2>Version 6.x features</h2>
<p>
Version 6.x of Mesa implements the OpenGL 1.5 API with the following
extensions incorporated as standard features:
</p>
<ul>
<li>GL_ARB_occlusion_query
<li>GL_ARB_vertex_buffer_object
<li>GL_EXT_shadow_funcs
</ul>
<p>
Also note that several OpenGL tokens were renamed in OpenGL 1.5
for the sake of consistency.
The old tokens are still available.
</p>
<pre>
New Token Old Token
------------------------------------------------------------
GL_FOG_COORD_SRC GL_FOG_COORDINATE_SOURCE
GL_FOG_COORD GL_FOG_COORDINATE
GL_CURRENT_FOG_COORD GL_CURRENT_FOG_COORDINATE
GL_FOG_COORD_ARRAY_TYPE GL_FOG_COORDINATE_ARRAY_TYPE
GL_FOG_COORD_ARRAY_STRIDE GL_FOG_COORDINATE_ARRAY_STRIDE
GL_FOG_COORD_ARRAY_POINTER GL_FOG_COORDINATE_ARRAY_POINTER
GL_FOG_COORD_ARRAY GL_FOG_COORDINATE_ARRAY
GL_SRC0_RGB GL_SOURCE0_RGB
GL_SRC1_RGB GL_SOURCE1_RGB
GL_SRC2_RGB GL_SOURCE2_RGB
GL_SRC0_ALPHA GL_SOURCE0_ALPHA
GL_SRC1_ALPHA GL_SOURCE1_ALPHA
GL_SRC2_ALPHA GL_SOURCE2_ALPHA
</pre>
<p>
See the
<a href="http://www.opengl.org/documentation/spec.html">
OpenGL specification</a> for more details.
</p>
<h2>Version 5.x features</h2>
<p>
Version 5.x of Mesa implements the OpenGL 1.4 API with the following
extensions incorporated as standard features:
</p>
<ul>
<li>GL_ARB_depth_texture
<li>GL_ARB_shadow
<li>GL_ARB_texture_env_crossbar
<li>GL_ARB_texture_mirror_repeat
<li>GL_ARB_window_pos
<li>GL_EXT_blend_color
<li>GL_EXT_blend_func_separate
<li>GL_EXT_blend_logic_op
<li>GL_EXT_blend_minmax
<li>GL_EXT_blend_subtract
<li>GL_EXT_fog_coord
<li>GL_EXT_multi_draw_arrays
<li>GL_EXT_point_parameters
<li>GL_EXT_secondary_color
<li>GL_EXT_stencil_wrap
<li>GL_EXT_texture_lod_bias (plus, a per-texture LOD bias parameter)
<li>GL_SGIS_generate_mipmap
</ul>
<h2>Version 4.x features</h2>
<p>
Version 4.x of Mesa implements the OpenGL 1.3 API with the following
extensions incorporated as standard features:
</p>
<ul>
<li>GL_ARB_multisample
<li>GL_ARB_multitexture
<li>GL_ARB_texture_border_clamp
<li>GL_ARB_texture_compression
<li>GL_ARB_texture_cube_map
<li>GL_ARB_texture_env_add
<li>GL_ARB_texture_env_combine
<li>GL_ARB_texture_env_dot3
<li>GL_ARB_transpose_matrix
</ul>
<h2>Version 3.x features</h2>
<p>
Version 3.x of Mesa implements the OpenGL 1.2 API with the following
features:
</p>
<ul>
<li>BGR, BGRA and packed pixel formats
<li>New texture border clamp mode
<li>glDrawRangeElements()
<li>standard 3-D texturing
<li>advanced MIPMAP control
<li>separate specular color interpolation
</ul>
<h2>Version 2.x features</h2>
<p>
Version 2.x of Mesa implements the OpenGL 1.1 API with the following
features.
</p>
<ul>
<li>Texture mapping:
<ul>
<li>glAreTexturesResident
<li>glBindTexture
<li>glCopyTexImage1D
<li>glCopyTexImage2D
<li>glCopyTexSubImage1D
<li>glCopyTexSubImage2D
<li>glDeleteTextures
<li>glGenTextures
<li>glIsTexture
<li>glPrioritizeTextures
<li>glTexSubImage1D
<li>glTexSubImage2D
</ul>
<li>Vertex Arrays:
<ul>
<li>glArrayElement
<li>glColorPointer
<li>glDrawElements
<li>glEdgeFlagPointer
<li>glIndexPointer
<li>glInterleavedArrays
<li>glNormalPointer
<li>glTexCoordPointer
<li>glVertexPointer
</ul>
<li>Client state management:
<ul>
<li>glDisableClientState
<li>glEnableClientState
<li>glPopClientAttrib
<li>glPushClientAttrib
</ul>
<li>Misc:
<ul>
<li>glGetPointer
<li>glIndexub
<li>glIndexubv
<li>glPolygonOffset
</ul>
</ul>
</div>
</body>
</html>

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Introduction
------------
This document describes the implementation of the XFree86 4.0 libGL.so
library defined by the Linux/OpenGL Base specification found at
http://reality.sgi.com/opengl/linux/linuxbase.html.
The documentation is divided into two sections:
User's Guide
Driver Developer's Guide
Author: Brian Paul (brian@precisioninsight.com)
Date: February 2000
User's Guide
------------
Using libGL.so
The libGL.so library defines the gl- and glX-prefixed functions needed to
run OpenGL programs. OpenGL client applications should link with the
-lGL option to use it.
libGL.so serves two primary functions: GLX protocol generation for indirect
rendering and loading/management of hardware drivers for direct rendering.
When libGL.so initializes itself it uses the DRI to determine the
appropriate hardware driver for each screen on the local X display.
The hardware drivers are expected to be in the /usr/X11R6/lib/modules/dri/
directory. Drivers are named with the convention <name>_dri.so where
<name> is a driver such as "radeon", "i965", "nouveau", etc.
The LIBGL_DRIVERS_DIR environment variable may be used to specify a
different DRI modules directory, overriding /usr/X11R6/lib/modules/dri/.
This environment variable is ignored in setuid programs for security
reasons.
When libGL.so is unable to locate appropriate hardware drivers it will
fall back to using indirect GLX rendering.
To aid in solving problems, libGL.so will print diagnostic messages to
stderr if the LIBGL_DEBUG environment variable is defined.
libGL.so is thread safe. The overhead of thread safety for common,
single-thread clients is negligible. However, the overhead of thread
safety for multi-threaded clients is significant. Each GL API call
requires two calls to pthread_get_specific() which can noticably
impact performance. Warning: libGL.so is thread safe but individual
DRI drivers may not be. Please consult the documentation for a driver
to learn if it is thread safe.
Indirect Rendering
You can force indirect rendering mode by setting the LIBGL_ALWAYS_INDIRECT
environment variable. Hardware acceleration will not be used.
libGL.so Extensibility
libGL.so is designed to be extended without upgrading. That is,
drivers may install new OpenGL extension functions into libGL.so
without requiring libGL.so to be replaced. Clients of libGL.so should
use the glXGetProcAddressEXT() function to obtain the address of
functions by name. For more details of GLX_ARB_get_proc_address see
http://oss.sgi.com/projects/ogl-sample/registry/ARB/get_proc_address.spec
libGL.so is also designed with flexibility such that it may be used
with many generations of hardware drivers to come.
Driver Developer's Guide
------------------------
This section describes the requirements to make an XFree86 4.0
libGL.so-compatible hardware driver. It is not intended for end
users of libGL.so.
XFree86 source files
libGL.so is built inside XFree86 with sources found in xc/lib/GL/.
Specifically, libGL.so is built from:
xc/lib/GL/glx/*.c
xc/lib/dri/XF86dri.c
xc/lib/dri/dri_glx.c
xc/lib/GL/mesa/src/glapi.c
xc/lib/GL/mesa/src/glapitemp.h
xc/lib/GL/mesa/src/glapitable.h
xc/lib/GL/mesa/src/glapioffsets.h
xc/lib/GL/mesa/src/glapinoop.c
xc/lib/GL/mesa/src/glheader.h
xc/lib/GL/mesa/src/glthread.c
xc/lib/GL/mesa/src/glthread.h
xc/lib/GL/mesa/src/X86/glapi_x86.S
xc/lib/GL/mesa/src/X86/assyntax.h
Understand that the mesa/src/gl*.[ch] files are not tied to Mesa. They
have no dependencies on the rest of Mesa and are designed to be reusable
in a number of projects.
The glapi_x86.X and assyntax.h files implement x86-optimized dispatch
of GL functions. They are not required; C-based dispatch can be used
instead, with a slight performance penalty.
Driver loading and binding
When libGL.so initializes itself (via the __glXInitialize function) a
call is made to driCreateDisplay(). This function uses DRI facilities
to determine the driver file appropriate for each screen on the local
display. Each screen's driver is then opened with dlopen() and asked
for its __driCreateScreen() function. The pointers to the __driCreateScreen()
functions are kept in an array, indexed by screen number, in the
__DRIdisplayRec struct.
When a driver's __driCreateScreen() function is called, it must initialize
a __DRIscreenRec struct. This struct acts as the root of a tree of
function pointers which are called to create and destroy contexts and
drawables and perform all the operations needed by the GLX interface.
See the xc/lib/GL/glx/glxclient.h file for details.
Dynamic Extension Function Registration
In order to provide forward compatibility with future drivers, libGL.so
allows drivers to register new OpenGL extension functions which weren't
known when libGL.so was built.
The register_extensions() function in xc/lib/GL/dri/dri_glx.c is called
as soon as libGL.so is loaded. This is done with gcc's constructor
attribute. This mechanism will likely have to be changed for other compilers.
register_extensions() loops over all local displays and screens, determines
the DRI driver for each, and calls the driver's __driRegisterExtensions()
function, if present.
The __driRegisterExtensions() function can add new entrypoints to libGL
by calling:
GLboolean _glapi_add_entrypoint(const char *funcName, GLuint offset)
The parameters are the name of the function (such as "glFoobarEXT") and the
offset of the dispatch slot in the API dispatch table. The return value
indicates success (GL_TRUE) or failure (GL_FALSE).
_glapi_add_entrypoint() will synthesize entrypoint code in assembly
language. Assembly languages is required since parameter passing
can't be handled correctly using a C-based solution.
The address of the new entrypoint is obtained by calling the
glXGetProcAddressARB() function.
The dispatch offset number MUST be a number allocated by SGI in the same
manner in which new GL_* constants are allocated. Using an arbitrary
offset number will result in many problems.
Dispatch Management
When a GL context is made current, the driver must install its dispatch
table as the current dispatch table. This is done by calling
void _glapi_set_dispatch(struct _glapi_table *dispatch);
This will install the named dispatch table for the calling thread.
The current dispatch table for a thread can be obtained by calling
struct _glapi_table *_glapi_get_dispatch(void);
For higher performance in the common single-thread case, the global
variable _glapi_Dispatch will point to the current dispatch table.
This variable will be NULL when in multi-thread mode.
Context Management
libGL.so uses the XFree86 xthreads package to manage a thread-specific
current context pointer. See __glXGet/SetCurrentContext() in glext.c
Drivers may use the _glapi_set/get_context() functions to maintain
a private thread-specific context pointer.

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>License / Copyright Information</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Disclaimer</h1>
<p>
Mesa is a 3-D graphics library with an API which is very similar to
that of <a href="http://www.opengl.org/">OpenGL</a>.*
To the extent that Mesa utilizes the OpenGL command syntax or state
machine, it is being used with authorization from <a
href="http://www.sgi.com/">Silicon Graphics,
Inc.</a>(SGI). However, the author does not possess an OpenGL license
from SGI, and makes no claim that Mesa is in any way a compatible
replacement for OpenGL or associated with SGI. Those who want a
licensed implementation of OpenGL should contact a licensed
vendor.
</p>
<p>
Please do not refer to the library as <em>MesaGL</em> (for legal
reasons). It's just <em>Mesa</em> or <em>The Mesa 3-D graphics
library</em>. <br>
</p>
<p>
* OpenGL is a trademark of <a href="http://www.sgi.com/"
>Silicon Graphics Incorporated</a>.
</p>
<h1>License / Copyright Information</h1>
<p>
The Mesa distribution consists of several components. Different copyrights
and licenses apply to different components. For example, some demo programs
are copyrighted by SGI, some of the Mesa device drivers are copyrighted by
their authors. See below for a list of Mesa's main components and the license
for each.
</p>
<p>
The core Mesa library is licensed according to the terms of the MIT license.
This allows integration with the XFree86, Xorg and DRI projects.
</p>
<p>
The default Mesa license is as follows:
</p>
<pre>
Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
</pre>
<h1>Attention, Contributors</h1>
<p>
When contributing to the Mesa project you must agree to the licensing terms
of the component to which you're contributing.
The following section lists the primary components of the Mesa distribution
and their respective licenses.
</p>
<h1>Mesa Component Licenses</h1>
<pre>
Component Location License
------------------------------------------------------------------
Main Mesa code src/mesa/ Mesa (MIT)
Device drivers src/mesa/drivers/* MIT, generally
Ext headers include/GL/glext.h Khronos
include/GL/glxext.h
C11 thread include/c11/threads*.h Boost (permissive)
emulation
</pre>
<p>
In general, consult the source files for license terms.
</p>
</div>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Mailing Lists</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Mailing Lists</h1>
<p>There are four Mesa 3D / DRI mailing lists:
</p>
<ul>
<li><p><a href="http://lists.freedesktop.org/mailman/listinfo/mesa-users">mesa-users</a>
- intended for end-users of Mesa and DRI drivers. Newbie questions are OK,
but please try the general OpenGL resources and Mesa/DRI documentation first.</p>
</li>
<li><p><a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev">mesa-dev</a>
- for Mesa, Gallium and DRI development
discussion. Not for beginners.</p>
</li>
<li><p><a href="http://lists.freedesktop.org/mailman/listinfo/mesa-commit">mesa-commit</a>
- relays git check-in messages (for developers).
In general, people should not post to this list.</p>
</li>
<li><p><a href="http://lists.freedesktop.org/mailman/listinfo/mesa-announce">mesa-announce</a>
- announcements of new Mesa
versions are sent to this list. Very low traffic.</p>
</li>
<li><p><a href="http://lists.freedesktop.org/mailman/listinfo/piglit">piglit</a>
- for Piglit (OpenGL driver testing framework) discussion.</p>
</li>
</ul>
<p>
<b>NOTE</b>: You <b>must</b> subscribe to these lists in order to post to them.
If you try to post to a list and you're not a subscriber (or if you try to post
from a different email address than you subscribed with) your posting will be
held for an indefinite period or may be discarded entirely.
</p>
<p>
Follow the links above for list archives.
</p>
<p>
The old Mesa lists hosted at SourceForge are no longer in use.
The archives are still available, however:
<a href="http://sourceforge.net/mailarchive/forum.php?forum_name=mesa3d-announce">mesa3d-announce</a>,
<a href="http://sourceforge.net/mailarchive/forum.php?forum_name=mesa3d-users">mesa3d-users</a>,
<a href="http://sourceforge.net/mailarchive/forum.php?forum_name=mesa3d-dev">mesa3d-dev</a>.
</p>
<p>For mailing lists about Direct Rendering Modules (drm) in Linux/BSD
kernels, see the
<a href="http://dri.freedesktop.org/wiki/MailingLists">DRI wiki</a>.
</p>
<h1>IRC</h1>
<p>join <a href="irc://chat.freenode.net#dri-devel">#dri-devel channel</a>
on <a href="http://webchat.freenode.net/">irc.freenode.net</a>
</p>
<h1>OpenGL Forums</h1>
<p>
Here are some other OpenGL-related forums you might find useful:
</p>
<ul>
<li><a href="http://www.opengl.org/cgi-bin/ubb/ultimatebb.cgi">OpenGL discussion forums</a>
at www.opengl.org</li>
<li>Usenet newsgroups:
<ul>
<li>comp.graphics.algorithms</li>
<li>comp.graphics.api.opengl</li>
<li>comp.os.linux.x</li>
</ul>
</ul>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>llvmpipe</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Introduction</h1>
<p>
The Gallium llvmpipe driver is a software rasterizer that uses LLVM to
do runtime code generation.
Shaders, point/line/triangle rasterization and vertex processing are
implemented with LLVM IR which is translated to x86 or x86-64 machine
code.
Also, the driver is multithreaded to take advantage of multiple CPU cores
(up to 8 at this time).
It's the fastest software rasterizer for Mesa.
</p>
<h1>Requirements</h1>
<ul>
<li>
<p>An x86 or amd64 processor; 64-bit mode recommended.</p>
<p>
Support for SSE2 is strongly encouraged. Support for SSSE3 and SSE4.1 will
yield the most efficient code. The fewer features the CPU has the more
likely is that you run into underperforming, buggy, or incomplete code.
</p>
<p>
See /proc/cpuinfo to know what your CPU supports.
</p>
</li>
<li>
<p>LLVM: version 2.9 recommended; 2.6 or later required.</p>
<p><b>NOTE</b>: LLVM 2.8 and earlier will not work on systems that support the
Intel AVX extensions (e.g. Sandybridge). LLVM's code generator will
fail when trying to emit AVX instructions. This was fixed in LLVM 2.9.
</p>
<p>
For Linux, on a recent Debian based distribution do:
</p>
<pre>
aptitude install llvm-dev
</pre>
<p>
For a RPM-based distribution do:
</p>
<pre>
yum install llvm-devel
</pre>
<p>
For Windows you will need to build LLVM from source with MSVC or MINGW
(either natively or through cross compilers) and CMake, and set the LLVM
environment variable to the directory you installed it to.
LLVM will be statically linked, so when building on MSVC it needs to be
built with a matching CRT as Mesa, and you'll need to pass
-DLLVM_USE_CRT_RELEASE=MTd for debug and checked builds,
-DLLVM_USE_CRT_RELEASE=MTd for profile and release builds.
You can build only the x86 target by passing -DLLVM_TARGETS_TO_BUILD=X86
to cmake.
</p>
</li>
<li>
<p>scons (optional)</p>
</li>
</ul>
<h1>Building</h1>
To build everything on Linux invoke scons as:
<pre>
scons build=debug libgl-xlib
</pre>
Alternatively, you can build it with GNU make, if you prefer, by invoking it as
<pre>
make linux-llvm
</pre>
but the rest of these instructions assume that scons is used.
For Windows the procedure is similar except the target:
<pre>
scons build=debug libgl-gdi
</pre>
<h1>Using</h1>
On Linux, building will create a drop-in alternative for libGL.so into
<pre>
build/foo/gallium/targets/libgl-xlib/libGL.so
</pre>
or
<pre>
lib/gallium/libGL.so
</pre>
To use it set the LD_LIBRARY_PATH environment variable accordingly.
For performance evaluation pass debug=no to scons, and use the corresponding
lib directory without the "-debug" suffix.
On Windows, building will create a drop-in alternative for opengl32.dll. To use
it put it in the same directory as the application. It can also be used by
replacing the native ICD driver, but it's quite an advanced usage, so if you
need to ask, don't even try it.
<h1>Profiling</h1>
<p>
To profile llvmpipe you should build as
</p>
<pre>
scons build=profile &lt;same-as-before&gt;
</pre>
<p>
This will ensure that frame pointers are used both in C and JIT functions, and
that no tail call optimizations are done by gcc.
</p>
<h2>Linux perf integration</h2>
<p>
On Linux, it is possible to have symbol resolution of JIT code with <a href="http://perf.wiki.kernel.org/">Linux perf</a>:
</p>
<pre>
perf record -g /my/application
perf report
</pre>
<p>
When run inside Linux perf, llvmpipe will create a /tmp/perf-XXXXX.map file with
symbol address table. It also dumps assembly code to /tmp/perf-XXXXX.map.asm,
which can be used by the bin/perf-annotate-jit script to produce disassembly of
the generated code annotated with the samples.
</p>
<p>You can obtain a call graph via
<a href="http://code.google.com/p/jrfonseca/wiki/Gprof2Dot#linux_perf">Gprof2Dot</a>.</p>
<h1>Unit testing</h1>
<p>
Building will also create several unit tests in
build/linux-???-debug/gallium/drivers/llvmpipe:
</p>
<ul>
<li> lp_test_blend: blending
<li> lp_test_conv: SIMD vector conversion
<li> lp_test_format: pixel unpacking/packing
</ul>
<p>
Some of this tests can output results and benchmarks to a tab-separated-file
for posterior analysis, e.g.:
</p>
<pre>
build/linux-x86_64-debug/gallium/drivers/llvmpipe/lp_test_blend -o blend.tsv
</pre>
<h1>Development Notes</h1>
<ul>
<li>
When looking to this code by the first time start in lp_state_fs.c, and
then skim through the lp_bld_* functions called in there, and the comments
at the top of the lp_bld_*.c functions.
</li>
<li>
The driver-independent parts of the LLVM / Gallium code are found in
src/gallium/auxiliary/gallivm/. The filenames and function prefixes
need to be renamed from "lp_bld_" to something else though.
</li>
<li>
We use LLVM-C bindings for now. They are not documented, but follow the C++
interfaces very closely, and appear to be complete enough for code
generation. See
<a href="http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html">
this stand-alone example</a>. See the llvm-c/Core.h file for reference.
</li>
</ul>
<h1 id="recommended_reading">Recommended Reading</h1>
<ul>
<li>
<p>Rasterization</p>
<ul>
<li><a href="http://www.cs.unc.edu/~olano/papers/2dh-tri/">Triangle Scan Conversion using 2D Homogeneous Coordinates</a></li>
<li><a href="http://www.drdobbs.com/parallel/rasterization-on-larrabee/217200602">Rasterization on Larrabee</a> (<a href="http://devmaster.net/posts/2887/rasterization-on-larrabee">DevMaster copy</a>)</li>
<li><a href="http://devmaster.net/posts/6133/rasterization-using-half-space-functions">Rasterization using half-space functions</a></li>
<li><a href="http://devmaster.net/posts/6145/advanced-rasterization">Advanced Rasterization</a></li>
<li><a href="http://fgiesen.wordpress.com/2013/02/17/optimizing-sw-occlusion-culling-index/">Optimizing Software Occlusion Culling</a></li>
</ul>
</li>
<li>
<p>Texture sampling</p>
<ul>
<li><a href="http://chrishecker.com/Miscellaneous_Technical_Articles#Perspective_Texture_Mapping">Perspective Texture Mapping</a></li>
<li><a href="http://www.flipcode.com/archives/Texturing_As_In_Unreal.shtml">Texturing As In Unreal</a></li>
<li><a href="http://www.gamasutra.com/view/feature/3301/runtime_mipmap_filtering.php">Run-Time MIP-Map Filtering</a></li>
<li><a href="http://alt.3dcenter.org/artikel/2003/10-26_a_english.php">Will "brilinear" filtering persist?</a></li>
<li><a href="http://ixbtlabs.com/articles2/gffx/nv40-rx800-3.html">Trilinear filtering</a></li>
<li><a href="http://devmaster.net/posts/12785/texture-swizzling">Texture Swizzling</a></li>
</ul>
</li>
<li>
<p>SIMD</p>
<ul>
<li><a href="http://www.cdl.uni-saarland.de/projects/wfv/#header4">Whole-Function Vectorization</a></li>
</ul>
</li>
<li>
<p>Optimization</p>
<ul>
<li><a href="http://www.drdobbs.com/optimizing-pixomatic-for-modern-x86-proc/184405807">Optimizing Pixomatic For Modern x86 Processors</a></li>
<li><a href="http://www.intel.com/content/www/us/en/architecture-and-technology/64-ia-32-architectures-optimization-manual.html">Intel 64 and IA-32 Architectures Optimization Reference Manual</a></li>
<li><a href="http://www.agner.org/optimize/">Software optimization resources</a></li>
<li><a href="http://software.intel.com/en-us/articles/intel-intrinsics-guide">Intel Intrinsics Guide</a><li>
</ul>
</li>
<li>
<p>LLVM</p>
<ul>
<li><a href="http://llvm.org/docs/LangRef.html">LLVM Language Reference Manual</a></li>
<li><a href="http://npcontemplation.blogspot.co.uk/2008/06/secret-of-llvm-c-bindings.html">The secret of LLVM C bindings</a></li>
</ul>
</li>
<li>
<p>General</p>
<ul>
<li><a href="http://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/">A trip through the Graphics Pipeline</a></li>
<li><a href="http://msdn.microsoft.com/en-us/library/gg615082.aspx#architecture">WARP Architecture and Performance</a></li>
</ul>
</li>
</ul>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Function Name Mangling</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Function Name Mangling</h1>
<p>
If you want to use both Mesa and another OpenGL library in the same
application at the same time you may find it useful to compile Mesa with
<i>name mangling</i>.
This results in all the Mesa functions being prefixed with
<b>mgl</b> instead of <b>gl</b>.
</p>
<p>
To do this, recompile Mesa with the compiler flag -DUSE_MGL_NAMESPACE.
Add the flag to CFLAGS in the configuration file which you want to use.
For example:
</p>
<pre>
CFLAGS += -DUSE_MGL_NAMESPACE
</pre>
</div>
</body>
</html>

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/* Mesa CSS */
body {
background-color: #ffffff;
font: 14px 'Lucida Grande', Geneva, Arial, Verdana, sans-serif;
color: black;
link: #111188;
}
h1 {
font: 24px 'Lucida Grande', Geneva, Arial, Verdana, sans-serif;
font-weight: bold;
color: black;
}
h2 {
font: 18px 'Lucida Grande', Geneva, Arial, Verdana, sans-serif, bold;
font-weight: bold;
color: black;
}
code {
font-family: monospace;
font-size: 10pt;
color: black;
}
pre {
/*font-family: monospace;*/
font-size: 10pt;
/*color: black;*/
}
iframe {
width: 19em;
height: 80em;
border: none;
float: left;
}
.content {
position: absolute;
left: 20em;
right: 10px;
overflow: hidden
}
.header {
background: black url('gears.png') 15px no-repeat;
margin:0;
padding: 5px;
clear:both;
}
.header h1 {
background: url('gears.png') right no-repeat;
color: white;
font: x-large sans-serif;
text-align: center;
height: 50px;
margin: 0;
padding-top: 30px;
}

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>OpenGL ES</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>OpenGL ES</h1>
<p>Mesa implements OpenGL ES 1.1 and OpenGL ES 2.0. More information about
OpenGL ES can be found at <a href="http://www.khronos.org/opengles/">
http://www.khronos.org/opengles/</a>.</p>
<p>OpenGL ES depends on a working EGL implementation. Please refer to
<a href="egl.html">Mesa EGL</a> for more information about EGL.</p>
<h2>Build the Libraries</h2>
<ol>
<li>Run <code>configure</code> with <code>--enable-gles1 --enable-gles2</code> and enable the Gallium driver for your hardware.</li>
<li>Build and install Mesa as usual.</li>
</ol>
Alternatively, if XCB-DRI2 is installed on the system, one can use
<code>egl_dri2</code> EGL driver with OpenGL|ES-enabled DRI drivers
<ol>
<li>Run <code>configure</code> with <code>--enable-gles1 --enable-gles2</code>.</li>
<li>Build and install Mesa as usual.</li>
</ol>
<p>Both methods will install libGLESv1_CM, libGLESv2, libEGL, and one or more
EGL drivers for your hardware.</p>
<h2>Run the Demos</h2>
<p>There are some demos in <code>mesa/demos</code> repository.</p>
<h2>Developers</h2>
<h3>Dispatch Table</h3>
<p>OpenGL ES has an additional indirection when dispatching functions</p>
<pre>
Mesa: glFoo() --&gt; _mesa_Foo()
OpenGL ES: glFoo() --&gt; _es_Foo() --&gt; _mesa_Foo()
</pre>
<p>The indirection serves several purposes</p>
<ul>
<li>When a function is in Mesa and the type matches, it checks the arguments and calls the Mesa function.</li>
<li>When a function is in Mesa but the type mismatches, it checks and converts the arguments before calling the Mesa function.</li>
<li>When a function is not available in Mesa, or accepts arguments that are not available in OpenGL, it provides its own implementation.</li>
</ul>
<p>Other than the last case, OpenGL ES uses <code>APIspec.xml</code> to generate functions to check and/or converts the arguments.</p>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>OpenVG State Tracker</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>OpenVG State Tracker</h1>
<p>
The current version of the OpenVG state tracker implements OpenVG 1.1.
</p>
<p>
More information about OpenVG can be found at
<a href="http://www.khronos.org/openvg/">
http://www.khronos.org/openvg/</a> .
</p>
<p>
The OpenVG state tracker depends on the Gallium architecture and a working EGL implementation.
Please refer to <a href="egl.html">Mesa EGL</a> for more information about EGL.
</p>
<h2>Building the library</h2>
<ol>
<li>Run <code>configure</code> with <code>--enable-openvg</code> and
<code>--enable-gallium-egl</code>. If you do not need OpenGL, you can add
<code>--disable-opengl</code> to save the compilation time.</li>
<li>Build and install Mesa as usual.</li>
</ol>
<h3>Sample build</h3>
A sample build looks as follows:
<pre>
$ ./configure --disable-opengl --enable-openvg --enable-gallium-egl
$ make
$ make install
</pre>
<p>It will install <code>libOpenVG.so</code>, <code>libEGL.so</code>, and one
or more EGL drivers.</p>
<h2>OpenVG Demos</h2>
<p>OpenVG demos can be found in mesa/demos repository.</p>
</div>
</body>
</html>

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Off-screen Rendering</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Off-screen Rendering</h1>
<p>
Mesa's off-screen interface is used for rendering into user-allocated memory
without any sort of window system or operating system dependencies.
That is, the GL_FRONT colorbuffer is actually a buffer in main memory,
rather than a window on your display.
</p>
<p>
The OSMesa API provides three basic functions for making off-screen
renderings: OSMesaCreateContext(), OSMesaMakeCurrent(), and
OSMesaDestroyContext(). See the Mesa/include/GL/osmesa.h header for
more information about the API functions.
</p>
<p>
The OSMesa interface may be used with any of three software renderers:
</p>
<ol>
<li>llvmpipe - this is the high-performance Gallium LLVM driver
<li>softpipe - this it the reference Gallium software driver
<li>swrast - this is the legacy Mesa software rasterizer
</ol>
<p>
There are several examples of OSMesa in the mesa/demos repository.
</p>
<h1>Building OSMesa</h1>
<p>
Configure and build Mesa with something like:
<pre>
configure --enable-osmesa --disable-driglx-direct --disable-dri --with-gallium-drivers=swrast
make
</pre>
<p>
Make sure you have LLVM installed first if you want to use the llvmpipe driver.
</p>
<p>
When the build is complete you should find:
</p>
<pre>
lib/libOSMesa.so (swrast-based OSMesa)
lib/gallium/libOSMsea.so (gallium-based OSMesa)
</pre>
<p>
Set your LD_LIBRARY_PATH to point to one directory or the other to select
the library you want to use.
</p>
<p>
When you link your application, link with -lOSMesa
</p>
</div>
</body>
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ARB_texture_float:
Silicon Graphics, Inc. owns US Patent #6,650,327, issued November 18,
2003 [1].
SGI believes this patent contains necessary IP for graphics systems
implementing floating point rasterization and floating point
framebuffer capabilities described in ARB_texture_float extension, and
will discuss licensing on RAND terms, on an individual basis with
companies wishing to use this IP in the context of conformant OpenGL
implementations [2].
The source code to implement ARB_texture_float extension is included
and can be toggled on at compile time, for those who purchased a
license from SGI, or are in a country where the patent does not apply,
etc.
The software is provided "as is", without warranty of any kind, express
or implied, including but not limited to the warranties of
merchantability, fitness for a particular purpose and noninfringement.
In no event shall the authors or copyright holders be liable for any
claim, damages or other liability, whether in an action of contract,
tort or otherwise, arising from, out of or in connection with the
software or the use or other dealings in the software.
You should contact a lawyer or SGI's legal department if you want to
enable this extension.
[1] http://www.google.com/patents/about?id=mIIOAAAAEBAJ&dq=6650327
[2] http://www.opengl.org/registry/specs/ARB/texture_float.txt

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Performance Tips</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Performance Tips</h1>
<p>
Performance tips for software rendering:
</p>
<ol>
<li> Turn off smooth shading when you don't need it (glShadeModel)
<li> Turn off depth buffering when you don't need it.
<li> Turn off dithering when not needed.
<li> Use double buffering as it's often faster than single buffering
<li> Compile in the X Shared Memory extension option if it's supported
on your system by adding -DSHM to CFLAGS and -lXext to XLIBS for
your system in the Make-config file.
<li> Recompile Mesa with more optimization if possible.
<li> Try to maximize the amount of drawing done between glBegin/glEnd pairs.
<li> Use the MESA_BACK_BUFFER variable to find best performance in double
buffered mode. (X users only)
<li> Optimized polygon rasterizers are employed when:
rendering into back buffer which is an XImage
RGB mode, not grayscale, not monochrome
depth buffering is GL_LESS, or disabled
flat or smooth shading
dithered or non-dithered
no other rasterization operations enabled (blending, stencil, etc)
<li> Optimized line drawing is employed when:
rendering into back buffer which is an XImage
RGB mode, not grayscale, not monochrome
depth buffering is GL_LESS or disabled
flat shading
dithered or non-dithered
no other rasterization operations enabled (blending, stencil, etc)
<li> Textured polygons are fastest when:
using a 3-component (RGB), 2-D texture
minification and magnification filters are GL_NEAREST
texture coordinate wrap modes for S and T are GL_REPEAT
GL_DECAL environment mode
glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST )
depth buffering is GL_LESS or disabled
<li> Lighting is fastest when:
Two-sided lighting is disabled
GL_LIGHT_MODEL_LOCAL_VIEWER is false
GL_COLOR_MATERIAL is disabled
No spot lights are used (all GL_SPOT_CUTOFFs are 180.0)
No local lights are used (all position W's are 0.0)
All material and light coefficients are &gt;= zero
<li> XFree86 users: if you want to use 24-bit color try starting your
X server in 32-bit per pixel mode for better performance. That is,
start your X server with
startx -- -bpp 32
instead of
startx -- -bpp 24
<li> Try disabling dithering with the MESA_NO_DITHER environment variable.
If this env var is defined Mesa will disable dithering and the
command glEnable(GL_DITHER) will be ignored.
</ol>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Gallium Post-processing</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Gallium Post-processing</h1>
<p>
The Gallium drivers support user-defined image post-processing.
At the end of drawing a frame a post-processing filter can be applied to
the rendered image.
Example filters include morphological antialiasing and cell shading.
</p>
<p>
The filters can be toggled per-app via driconf, or per-session via the
corresponding environment variables.
</p>
<p>
Multiple filters can be used together.
</p>
<h2>PP environment variables</h2>
<ul>
<li>PP_DEBUG - If defined debug information will be printed to stderr.
</ul>
<h2>Current filters</h2>
<ul>
<li>pp_nored, pp_nogreen, pp_noblue - set to 1 to remove the corresponding color channel.
These are basic filters for easy testing of the PP queue.
<li>pp_jimenezmlaa, pp_jimenezmlaa_color -
<a href="http://www.iryokufx.com/mlaa/" target=_blank>Jimenez's MLAA</a>
is a morphological antialiasing filter.
The two versions use depth and color data, respectively.
Which works better depends on the app - depth will not blur text, but it will
miss transparent textures for example.
Set to a number from 2 to 32, roughly corresponding to quality.
Numbers higher than 8 see minimizing gains.
<li>pp_celshade - set to 1 to enable cell shading (a more complex color filter).
</ul>
<br>
<br>
</div>
</body>
</html>

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Precompiled libraries</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Precompiled Libraries</h1>
<p>
In general, precompiled Mesa libraries are not available.
</p>
<p>
However, some Linux distros (such as Ubuntu) seem to closely track
Mesa and often have the latest Mesa release available as an update.
</p>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="contents.html"></iframe>
<div class="content">
<h1>Release Notes</h1>
<p>
The release notes summarize what's new or changed in each Mesa release.
</p>
<ul>
<li><a href="relnotes/10.1.html">10.1 release notes</a>
<li><a href="relnotes/10.0.2.html">10.0.2 release notes</a>
<li><a href="relnotes/10.0.1.html">10.0.1 release notes</a>
<li><a href="relnotes/10.0.html">10.0 release notes</a>
<li><a href="relnotes/9.2.5.html">9.2.5 release notes</a>
<li><a href="relnotes/9.2.4.html">9.2.4 release notes</a>
<li><a href="relnotes/9.2.3.html">9.2.3 release notes</a>
<li><a href="relnotes/9.2.2.html">9.2.2 release notes</a>
<li><a href="relnotes/9.2.1.html">9.2.1 release notes</a>
<li><a href="relnotes/9.2.html">9.2 release notes</a>
<li><a href="relnotes/9.1.7.html">9.1.7 release notes</a>
<li><a href="relnotes/9.1.6.html">9.1.6 release notes</a>
<li><a href="relnotes/9.1.5.html">9.1.5 release notes</a>
<li><a href="relnotes/9.1.4.html">9.1.4 release notes</a>
<li><a href="relnotes/9.1.3.html">9.1.3 release notes</a>
<li><a href="relnotes/9.1.2.html">9.1.2 release notes</a>
<li><a href="relnotes/9.1.1.html">9.1.1 release notes</a>
<li><a href="relnotes/9.1.html">9.1 release notes</a>
<li><a href="relnotes/9.0.3.html">9.0.3 release notes</a>
<li><a href="relnotes/9.0.2.html">9.0.2 release notes</a>
<li><a href="relnotes/9.0.1.html">9.0.1 release notes</a>
<li><a href="relnotes/9.0.html">9.0 release notes</a>
<li><a href="relnotes/8.0.5.html">8.0.5 release notes</a>
<li><a href="relnotes/8.0.4.html">8.0.4 release notes</a>
<li><a href="relnotes/8.0.3.html">8.0.3 release notes</a>
<li><a href="relnotes/8.0.2.html">8.0.2 release notes</a>
<li><a href="relnotes/8.0.1.html">8.0.1 release notes</a>
<li><a href="relnotes/8.0.html">8.0 release notes</a>
<li><a href="relnotes/7.11.2.html">7.11.2 release notes</a>
<li><a href="relnotes/7.11.1.html">7.11.1 release notes</a>
<li><a href="relnotes/7.11.html">7.11 release notes</a>
<li><a href="relnotes/7.10.3.html">7.10.3 release notes</a>
<li><a href="relnotes/7.10.2.html">7.10.2 release notes</a>
<li><a href="relnotes/7.10.1.html">7.10.1 release notes</a>
<li><a href="relnotes/7.10.html">7.10 release notes</a>
<li><a href="relnotes/7.9.2.html">7.9.2 release notes</a>
<li><a href="relnotes/7.9.1.html">7.9.1 release notes</a>
<li><a href="relnotes/7.9.html">7.9 release notes</a>
<li><a href="relnotes/7.8.3.html">7.8.3 release notes</a>
<li><a href="relnotes/7.8.2.html">7.8.2 release notes</a>
<li><a href="relnotes/7.8.1.html">7.8.1 release notes</a>
<li><a href="relnotes/7.8.html">7.8 release notes</a>
<li><a href="relnotes/7.7.1.html">7.7.1 release notes</a>
<li><a href="relnotes/7.7.html">7.7 release notes</a>
<li><a href="relnotes/7.6.1.html">7.6.1 release notes</a>
<li><a href="relnotes/7.6.html">7.6 release notes</a>
<li><a href="relnotes/7.5.2.html">7.5.2 release notes</a>
<li><a href="relnotes/7.5.1.html">7.5.1 release notes</a>
<li><a href="relnotes/7.5.html">7.5 release notes</a>
<li><a href="relnotes/7.4.4.html">7.4.4 release notes</a>
<li><a href="relnotes/7.4.3.html">7.4.3 release notes</a>
<li><a href="relnotes/7.4.2.html">7.4.2 release notes</a>
<li><a href="relnotes/7.4.1.html">7.4.1 release notes</a>
<li><a href="relnotes/7.4.html">7.4 release notes</a>
<li><a href="relnotes/7.3.html">7.3 release notes</a>
<li><a href="relnotes/7.2.html">7.2 release notes</a>
<li><a href="relnotes/7.1.html">7.1 release notes</a>
<li><a href="relnotes/7.0.4.html">7.0.4 release notes</a>
<li><a href="relnotes/7.0.3.html">7.0.3 release notes</a>
<li><a href="relnotes/7.0.2.html">7.0.2 release notes</a>
<li><a href="relnotes/7.0.1.html">7.0.1 release notes</a>
<li><a href="relnotes/7.0.html">7.0 release notes</a>
<li><a href="relnotes/6.5.3.html">6.5.3 release notes</a>
<li><a href="relnotes/6.5.2.html">6.5.2 release notes</a>
<li><a href="relnotes/6.5.1.html">6.5.1 release notes</a>
<li><a href="relnotes/6.5.html">6.5 release notes</a>
<li><a href="relnotes/6.4.2.html">6.4.2 release notes</a>
<li><a href="relnotes/6.4.1.html">6.4.1 release notes</a>
<li><a href="relnotes/6.4.html">6.4 release notes</a>
</ul>
<p>
Versions of Mesa prior to 6.4 are summarized in the
<a href="versions.html">versions file</a> and the following release notes.
</p>
<ul>
<li><a href="relnotes/6.3.2">6.3.2 release notes</a>
<li><a href="relnotes/6.3.1">6.3.1 release notes</a>
<li><a href="relnotes/6.3">6.3 release notes</a>
<li><a href="relnotes/6.2.1">6.2.1 release notes</a>
<li><a href="relnotes/6.2">6.2 release notes</a>
<li><a href="relnotes/6.1">6.1 release notes</a>
<li><a href="relnotes/6.0.1">6.0.1 release notes</a>
<li><a href="relnotes/6.0">6.0 release notes</a>
<li><a href="relnotes/5.1">5.1 release notes</a>
<li><a href="relnotes/5.0.2">5.0.2 release notes</a>
<li><a href="relnotes/5.0.1">5.0.1 release notes</a>
<li><a href="relnotes/5.0">5.0 release notes</a>
<li><a href="relnotes/4.1">4.1 release notes</a>
<li><a href="relnotes/4.0.3">4.0.3 release notes</a>
<li><a href="relnotes/4.0.2">4.0.2 release notes</a>
<li><a href="relnotes/4.0.1">4.0.1 release notes</a>
<li><a href="relnotes/4.0">4.0 release notes</a>
<li><a href="relnotes/3.5">3.5 release notes</a>
<li><a href="relnotes/3.4.2">3.4.2 release notes</a>
<li><a href="relnotes/3.4.1">3.4.1 release notes</a>
<li><a href="relnotes/3.4">3.4 release notes</a>
<li><a href="relnotes/3.3">3.3 release notes</a>
<li><a href="relnotes/3.2.1">3.2.1 release notes</a>
<li><a href="relnotes/3.2">3.2 release notes</a>
<li><a href="relnotes/3.1">3.1 release notes</a>
</ul>
</div>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.0.1 Release Notes / (December 12, 2013)</h1>
<p>
Mesa 10.0.1 is a bug fix release which fixes bugs found since the 10.0 release.
</p>
<p>
Mesa 10.0.1 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
0a72ca5b36046a658bf6038326ff32ed MesaLib-10.0.1.tar.bz2
01bde35c912e504ba62caf1ef9f7022c MesaLib-10.0.1.tar.gz
59a174a11a89e6b1b8ee9c3f7e3c388c MesaLib-10.0.1.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=64323">Bug 64323</a> - Severe misrendering in Left 4 Dead 2</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68838">Bug 68838</a> - GLSL: struct declarations produce a &quot;empty declaration warning&quot; in 9.2</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=69155">Bug 69155</a> - [NV50 gallium] [piglit] bin/varying-packing-simple triggers memory corruption/failures</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70250">Bug 70250</a> - weston-terminal rendering corrupted with output transform 90 and 270</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70601">Bug 70601</a> - [SNB Bisected]Piglit spec/ARB_texture_float/multisample-formats 2 GL_ARB_texture_float fails</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72230">Bug 72230</a> - Unable to extract MesaLib-10.0.0.tar.{gz,bz2} with bsdtar</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72325">Bug 72325</a> - [swrast] piglit glean fbo regression</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72327">Bug 72327</a> - [swrast] piglit glean pointSprite regression</li>
</ul>
<h2>Changes</h2>
<p>The full set of changes can be viewed by using the following git command:</p>
<pre>
git log mesa-10.0..mesa-10.0.1
</pre>
<p>Axel Davy (2):</p>
<ul>
<li>egl/wayland: Flush the wl_display at the end of SwapBuffers</li>
<li>Enable throttling in SwapBuffers</li>
</ul>
<p>Chad Versace (2):</p>
<ul>
<li>i965/hsw: Apply non-msrt fast color clear w/a to all HSW GTs</li>
<li>i965: Add extra-alignment for non-msrt fast color clear for all hw (v2)</li>
</ul>
<p>Dave Airlie (1):</p>
<ul>
<li>swrast: fix readback regression since inversion fix</li>
</ul>
<p>Emil Velikov (1):</p>
<ul>
<li>automake: include only one copy VERSION in tarball</li>
</ul>
<p>Ian Romanick (3):</p>
<ul>
<li>docs: Add 10.0 release md5sums</li>
<li>Remove a057b83 from the pick list</li>
<li>glsl: Don't emit empty declaration warning for a struct specifier</li>
</ul>
<p>Ilia Mirkin (8):</p>
<ul>
<li>mesa: don't leak performance monitors on context destroy</li>
<li>nv50: Fix GPU_READING/WRITING bit removal</li>
<li>nouveau: avoid leaking fences while waiting</li>
<li>nv50: wait on the buf's fence before sticking it into pushbuf</li>
<li>nv50: enable h264 and mpeg4 for nv98+ (vp3, vp4.0)</li>
<li>nouveau/video: update h264 picparm field names based on usage</li>
<li>nouveau/video: update a few more h264 picparm field names</li>
<li>nv50: report 15 max inputs for fragment programs</li>
</ul>
<p>Jordan Justen (1):</p>
<ul>
<li>dri megadriver_stub: add compatibility for older DRI loaders</li>
</ul>
<p>Kristian Høgsberg (2):</p>
<ul>
<li>egl/wayland: Damage INT32_MAX x INT32_MAX region for eglSwapBuffers</li>
<li>egl/wayland: Send commit after flushing the driver context</li>
</ul>
<p>Maarten Lankhorst (1):</p>
<ul>
<li>nouveau: Fix compiler warning regression</li>
</ul>
<p>Paul Berry (1):</p>
<ul>
<li>i965/gen6: Fix multisample resolve blits for luminance/intensity 32F formats.</li>
</ul>
<p>Thomas Hellstrom (1):</p>
<ul>
<li>st/xa: Bump major version number to 2</li>
</ul>
<p>Tom Stellard (2):</p>
<ul>
<li>r300/compiler/tests: Fix segfault</li>
<li>r300/compiler/tests: Fix line length check in test parser</li>
</ul>
</div>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.0.2 Release Notes / (January 9, 2014)</h1>
<p>
Mesa 10.0.2 is a bug fix release which fixes bugs found since the 10.0.1 release.
</p>
<p>
Mesa 10.0.2 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
de7d14baf0101b697c140d2f47ef27e9 MesaLib-10.0.2.tar.gz
8544c0ab3e438a08b5103421ea15b6d2 MesaLib-10.0.2.tar.bz2
181b0d6c1afca38e98a930d0e564ed90 MesaLib-10.0.2.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70740">Bug 70740</a> - HiZ on SNB causes GPU hang with WebGL web app</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72026">Bug 72026</a> - SIGSEGV in fs_visitor::visit(ir_dereference_variable*)</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72264">Bug 72264</a> - GLSL error reporting</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=72369">Bug 72369</a> - glitches in serious sam 3 with the sb shader backend</li>
</ul>
<h2>Changes</h2>
<p>The full set of changes can be viewed by using the following git command:</p>
<pre>
git log mesa-10.0.1..mesa-10.0.2
</pre>
<p>Aaron Watry (8):</p>
<ul>
<li>clover: Remove unused variable</li>
<li>pipe_loader/sw: close dev-&gt;lib when initialization fails</li>
<li>radeon/compute: Stop leaking LLVMContexts in radeon_llvm_parse_bitcode</li>
<li>r600/compute: Free compiled kernels when deleting compute state</li>
<li>r600/compute: Use the correct FREE macro when deleting compute state</li>
<li>radeon/llvm: Free target data at end of optimization</li>
<li>st/vdpau: Destroy context when initialization fails</li>
<li>r600/pipe: Stop leaking context-&gt;start_compute_cs_cmd.buf on EG/CM</li>
</ul>
<p>Alex Deucher (1):</p>
<ul>
<li>r600g: fix SUMO2 pci id</li>
</ul>
<p>Alexander von Gluck IV (1):</p>
<ul>
<li>Haiku: Add in public GL kit headers</li>
</ul>
<p>Anuj Phogat (1):</p>
<ul>
<li>mesa: Fix error code generation in glBeginConditionalRender()</li>
</ul>
<p>Carl Worth (2):</p>
<ul>
<li>docs: Add md5sums for the 10.0.1 release.</li>
<li>Update version to 10.0.2</li>
</ul>
<p>Chad Versace (1):</p>
<ul>
<li>i965/gen6: Fix HiZ hang in WebGL Google Maps</li>
</ul>
<p>Erik Faye-Lund (1):</p>
<ul>
<li>glcpp: error on multiple #else/#elif directives</li>
</ul>
<p>Henri Verbeet (1):</p>
<ul>
<li>i915: Add support for gl_FragData[0] reads.</li>
</ul>
<p>Ilia Mirkin (1):</p>
<ul>
<li>nv50: fix a small leak on context destroy</li>
</ul>
<p>Jonathan Liu (2):</p>
<ul>
<li>st/mesa: use pipe_sampler_view_release()</li>
<li>llvmpipe: use pipe_sampler_view_release() to avoid segfault</li>
</ul>
<p>Kenneth Graunke (2):</p>
<ul>
<li>i965: Fix 3DSTATE_PUSH_CONSTANT_ALLOC_PS packet creation.</li>
<li>Revert "mesa: Remove GLXContextID typedef from glx.h."</li>
</ul>
<p>Kevin Rogovin (1):</p>
<ul>
<li>Use line number information from entire function expression</li>
</ul>
<p>Kristian Høgsberg (1):</p>
<ul>
<li>dri_util: Don't assume __DRIcontext-&gt;driverPrivate is a gl_context</li>
</ul>
<p>Marek Olšák (2):</p>
<ul>
<li>mesa: fix interpretation of glClearBuffer(drawbuffer)</li>
<li>st/mesa: fix glClear with multiple colorbuffers and different formats</li>
</ul>
<p>Paul Berry (2):</p>
<ul>
<li>glsl: Teach ir_variable_refcount about ir_loop::counter variables.</li>
<li>glsl: Fix inconsistent assumptions about ir_loop::counter.</li>
</ul>
<p>Vadim Girlin (1):</p>
<ul>
<li>r600g/sb: fix stack size computation on evergreen</li>
</ul>
</div>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.0 Release Notes / (November 30th, 2013)</h1>
<p>
Mesa 10.0 is a new development release.
People who are concerned with stability and reliability should stick
with a previous release or wait for Mesa 10.0.1.
</p>
<p>
Mesa 10.0 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
b38626b96c664db67a534d7859682436 MesaLib-10.0.0.tar.gz
f3fe55d9735bea158bbe97ed9a0da819 MesaLib-10.0.0.tar.bz2
c6ee1ce51e3bf35947d2978b872daf51 MesaLib-10.0.0.zip
</pre>
<h2>New features</h2>
<p>
Note: some of the new features are only available with certain drivers.
</p>
<ul>
<li>GL_AMD_seamless_cubemap_per_texture on i965.</li>
<li>GL_ARB_conservative_depth on i965.</li>
<li>GL_ARB_texture_gather on i965.</li>
<li>GL_ARB_texture_query_levels on i965.</li>
<li>GL_ARB_texture_mirror_clamp_to_edge.</li>
<li>GL_ARB_transform_feedback2, GL_ARB_transform_feedback3, and GL_ARB_transform_feedback_instanced on i965/Gen7 (with appropriate kernel support).</li>
<li>GL_ARB_sample_shading on i965.</li>
<li>GL_ARB_shader_atomic_counters on i965.</li>
<li>GL_ARB_vertex_attrib_binding</li>
<li>GL_ARB_vertex_type_10f_11f_11f_rev on i965 and r600g</li>
<li>GL_KHR_debug</li>
<li>GLX_MESA_query_renderer</li>
</ul>
<h2>Bug fixes</h2>
<p>Attempts have been made to <b>not</b> include bugs fixed in previous 9.2
releases or bugs that were regressions during 10.0 development. This list is
likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=47755">Bug 47755</a> - [glsl-compiler] no error checking when Interpolation qualifier for built-in variable is different in vertex and fragment shader</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=52171">Bug 52171</a> - [gallium/r600/clover] Simple benchmarks failed to run</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=53077">Bug 53077</a> - [IVB] Output error with msaa when both of framebuffer and source color's alpha are not 1</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=54867">Bug 54867</a> - bug in r300 compiler</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=60929">Bug 60929</a> - [r600-llvm] mono games with opengl are blocking on start</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=62142">Bug 62142</a> - Mesa/demo mipmap_limits upside down with running by SOFTWARE</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=62698">Bug 62698</a> - [bisected] WebGL demo &quot;Consumed&quot;: texstate.c:628: update_texture_state: Assertion „__builtin_popcount(enabledTargets) == 1“ failed.</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=64225">Bug 64225</a> - bfgminer --scyte generates Segmentation Fault on Northern Island</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=64226">Bug 64226</a> - python-opencl package generate segmentation fault at pipe_r600.so</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=64261">Bug 64261</a> - [SNB Bisected]Ogles3conform GL3Tests_color_buffer_float_color_buffer_float_clamp_fixed.test fail</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=66213">Bug 66213</a> - Certain Mesa Demos Rendering Inverted (vertically)</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=66806">Bug 66806</a> - [softpipe] glxgears floating point exception</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=67921">Bug 67921</a> - [bisected commit 883987] crosscompiling fails with util/u_cpu_detect.c:247:4: error: 'asm' undeclared (first use in this function)</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68162">Bug 68162</a> - [radeonsi] texture rendering is broken in Source-Engine games</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68451">Bug 68451</a> - Texture flicker in native Dota2 in mesa 9.2.0rc1</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68503">Bug 68503</a> - Graphical glitches in Serious Sam 3 when SB is enabled</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68792">Bug 68792</a> - Problems during playback of h264 files using UVD and VLC on AMD E-350 CPU</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=68845">Bug 68845</a> - VDPAU/UVD regression</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=69078">Bug 69078</a> - Modern Warfare (1, 2 and 3) broken in Wine on SNB</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=69321">Bug 69321</a> - starting openCL crashes/boots system</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70042">Bug 70042</a> - Major texture flickering in Dota 2 (r600g on HD 6950)</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70088">Bug 70088</a> - Glamor on r600g crashes Xserver</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70123">Bug 70123</a> - Freeze caused by 'winsys/radeon: remove cs_queue_empty' commit</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70327">Bug 70327</a> - Casting floating point variable to integer not working properly while constant gets converted properly</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70891">Bug 70891</a> - CL_INVALID_BUILD_OPTIONS results in CL_INVALID_DEVICE when asking for build log</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=70913">Bug 70913</a> - [PIGLIT,radeonsi] crash in &quot;spec/EXT_framebuffer_multisample/sample-alpha-to-coverage 4 depth&quot; (buffer overflow)</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71022">Bug 71022</a> - configure: error: Expat required for DRI.</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71110">Bug 71110</a> - xorg_driver.c:1030:2: error: too many arguments to function DamageUnregister</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71172">Bug 71172</a> - Segfault when running glxinfo. NV25GL [Quadro4 900 XGL]</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71512">Bug 71512</a> - dlopen.h:54: undefined reference to `dlopen'</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71870">Bug 71870</a> - Metro: Last Light rendering issues</li>
</ul>
<h2>Changes</h2>
<ul>
<li>Removed X.Org state tracker (unmaintained and broken)</li>
<li>Removed the video-accel r300 targets</li>
<li>Removed the video-accel softpipe targets</li>
</ul>
</div>
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<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1.1 Release Notes / (April 18, 2014)</h1>
<p>
Mesa 10.1.1 is a bug fix release which fixes bugs found since the 10.1 release.
</p>
<p>
Mesa 10.1.1 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
96e63674ccfa98e7ec6eb4fee3f770c3 MesaLib-10.1.1.tar.gz
1fde7ed079df7aeb9b6a744ca033de8d MesaLib-10.1.1.tar.bz2
e64d0a562638664b13d2edf22321df59 MesaLib-10.1.1.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=71547">Bug 71547</a> - compilation failure :#error &quot;SSE4.1 instruction set not enabled&quot;</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=74868">Bug 74868</a> - r600g: Diablo III Crashes After a few minutes</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=74988">Bug 74988</a> - Buffer overrun (segfault) decompressing ETC2 texture in GLBenchmark 3.0 Manhattan</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=75279">Bug 75279</a> - XCloseDisplay() takes one minute around nouveau_dri.so, freezing Firefox startup</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=75543">Bug 75543</a> - OSMesa Gallium OSMesaMakeCurrent</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=75660">Bug 75660</a> - u_inlines.h:277:pipe_buffer_map_range: Assertion `length' failed.</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=76323">Bug 76323</a> - GLSL compiler ignores layout(binding=N) on uniform blocks</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=76377">Bug 76377</a> - DRI3 should only be enabled on Linux due to a udev dependency</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=76749">Bug 76749</a> - [HSW] DOTA world lighting has no effect</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=77102">Bug 77102</a> - gallium nouveau has no profile in vdpau and libva</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=77207">Bug 77207</a> - [ivb/hsw] batch overwritten with garbage</li>
</ul>
<h2>Changes</h2>
<p>Aaron Watry (1):</p>
<ul>
<li>gallium/util: Fix memory leak</li>
</ul>
<p>Alexander von Gluck IV (1):</p>
<ul>
<li>haiku: Fix build through scons corrections and viewport fixes</li>
</ul>
<p>Anuj Phogat (2):</p>
<ul>
<li>mesa: Set initial internal format of a texture to GL_RGBA</li>
<li>mesa: Allow GL_DEPTH_COMPONENT and GL_DEPTH_STENCIL combinations in glTexImage{123}D()</li>
</ul>
<p>Brian Paul (12):</p>
<ul>
<li>softpipe: use 64-bit arithmetic in softpipe_resource_layout()</li>
<li>mesa: don't call ctx-&gt;Driver.ClearBufferSubData() if size==0</li>
<li>st/osmesa: check buffer size when searching for buffers</li>
<li>mesa: fix copy &amp; paste bugs in pack_ubyte_SARGB8()</li>
<li>mesa: fix copy &amp; paste bugs in pack_ubyte_SRGB8()</li>
<li>c11/threads: don't include assert.h if the assert macro is already defined</li>
<li>mesa: fix unpack_Z32_FLOAT_X24S8() / unpack_Z32_FLOAT() mix-up</li>
<li>st/mesa: add null pointer checking in query object functions</li>
<li>mesa: fix glMultiDrawArrays inside a display list</li>
<li>cso: fix sampler view count in cso_set_sampler_views()</li>
<li>svga: replace sampler assertion with conditional</li>
<li>svga: move LIST_INITHEAD(dirty_buffers) earlier in svga_context_create()</li>
</ul>
<p>Carl Worth (3):</p>
<ul>
<li>cherry-ignore: Ignore a few patches</li>
<li>glsl: Allow explicit binding on atomics again</li>
<li>Update VERSION to 10.1.1</li>
</ul>
<p>Chia-I Wu (1):</p>
<ul>
<li>i965/vec4: fix record clearing in copy propagation</li>
</ul>
<p>Christian König (2):</p>
<ul>
<li>st/mesa: recreate sampler view on context change v3</li>
<li>st/mesa: fix sampler view handling with shared textures v4</li>
</ul>
<p>Courtney Goeltzenleuchter (1):</p>
<ul>
<li>mesa: add bounds checking to eliminate buffer overrun</li>
</ul>
<p>Emil Velikov (5):</p>
<ul>
<li>nv50: add missing brackets when handling the samplers array</li>
<li>mesa: return v.value_int64 when the requested type is TYPE_INT64</li>
<li>configure: enable dri3 only for linux</li>
<li>glx: drop obsolete _XUnlock_Mutex in __glXInitialize error path</li>
<li>configure: cleanup libudev handling</li>
</ul>
<p>Eric Anholt (1):</p>
<ul>
<li>i965: Fix buffer overruns in MSAA MCS buffer clearing.</li>
</ul>
<p>Hans (2):</p>
<ul>
<li>util: don't define isfinite(), isnan() for MSVC &gt;= 1800</li>
<li>mesa: don't define c99 math functions for MSVC &gt;= 1800</li>
</ul>
<p>Ian Romanick (7):</p>
<ul>
<li>linker: Split set_uniform_binding into separate functions for blocks and samplers</li>
<li>linker: Various trivial clean-ups in set_sampler_binding</li>
<li>linker: Fold set_uniform_binding into call site</li>
<li>linker: Clean up "unused parameter" warnings</li>
<li>linker: Set block bindings based on UniformBlocks rather than UniformStorage</li>
<li>linker: Set binding for all elements of UBO array</li>
<li>glsl: Propagate explicit binding information from the AST all the way to the linker</li>
</ul>
<p>Ilia Mirkin (8):</p>
<ul>
<li>nouveau: fix fence waiting logic in screen destroy</li>
<li>nv50: adjust blit_3d handling of ms output textures</li>
<li>loader: add special logic to distinguish nouveau from nouveau_vieux</li>
<li>mesa/main: condition GL_DEPTH_STENCIL on ARB_depth_texture</li>
<li>nouveau: add forgotten GL_COMPRESSED_INTENSITY to texture format list</li>
<li>nouveau: there may not have been a texture if the fbo was incomplete</li>
<li>nvc0/ir: move sample id to second source arg to fix sampler2DMS</li>
<li>nouveau: fix firmware check on nvd7/nvd9</li>
</ul>
<p>Johannes Nixdorf (1):</p>
<ul>
<li>configure.ac: fix the detection of expat with pkg-config</li>
</ul>
<p>Jonathan Gray (7):</p>
<ul>
<li>gallium: add endian detection for OpenBSD</li>
<li>loader: use 0 instead of FALSE which isn't defined</li>
<li>loader: don't limit the non-udev path to only android</li>
<li>megadriver_stub.c: don't use _GNU_SOURCE to gate the compat code</li>
<li>egl/dri2: don't require libudev to build drm/wayland platforms</li>
<li>egl/dri2: use drm macros to construct device name</li>
<li>configure: don't require libudev for gbm or egl drm/wayland</li>
</ul>
<p>José Fonseca (4):</p>
<ul>
<li>c11/threads: Fix nano to milisecond conversion.</li>
<li>mapi/u_thread: Use GetCurrentThreadId</li>
<li>c11/threads: Don't implement thrd_current on Windows.</li>
<li>draw: Duplicate TGSI tokens in draw_pipe_pstipple module.</li>
</ul>
<p>Kenneth Graunke (4):</p>
<ul>
<li>i965/fs: Fix register comparisons in saturate propagation.</li>
<li>glsl: Fix lack of i2u in lower_ubo_reference.</li>
<li>i965: Stop advertising GL_MESA_ycbcr_texture.</li>
<li>glsl: Try vectorizing when seeing a repeated assignment to a channel.</li>
</ul>
<p>Marek Olšák (13):</p>
<ul>
<li>r600g: fix texelFetchOffset GLSL functions</li>
<li>r600g: fix blitting the last 2 mipmap levels for Evergreen</li>
<li>mesa: fix the format of glEdgeFlagPointer</li>
<li>r600g,radeonsi: fix MAX_TEXTURE_3D_LEVELS and MAX_TEXTURE_ARRAY_LAYERS limits</li>
<li>st/mesa: fix per-vertex edge flags and GLSL support (v2)</li>
<li>mesa: mark GL_RGB9_E5 as not color-renderable</li>
<li>mesa: fix texture border handling for cube arrays</li>
<li>mesa: allow generating mipmaps for cube arrays</li>
<li>mesa: fix software fallback for generating mipmaps for cube arrays</li>
<li>mesa: fix software fallback for generating mipmaps for 3D textures</li>
<li>st/mesa: fix generating mipmaps for cube arrays</li>
<li>st/mesa: drop the lowering of quad strips to triangle strips</li>
<li>r600g: implement edge flags</li>
</ul>
<p>Matt Turner (4):</p>
<ul>
<li>mesa: Wrap SSE4.1 code in #ifdef __SSE4_1__.</li>
<li>i965/fs: Fix off-by-one in saturate propagation.</li>
<li>i965/fs: Don't propagate saturate modifiers into partial writes.</li>
<li>i965/fs: Don't propagate saturation modifiers if there are source modifiers.</li>
</ul>
<p>Michel Dänzer (1):</p>
<ul>
<li>r600g: Don't leak bytecode on shader compile failure</li>
</ul>
<p>Mike Stroyan (1):</p>
<ul>
<li>i965: Avoid dependency hints on math opcodes</li>
</ul>
<p>Thomas Hellstrom (5):</p>
<ul>
<li>winsys/svga: Replace the query mm buffer pool with a slab pool v3</li>
<li>winsys/svga: Update the vmwgfx_drm.h header to latest version from kernel</li>
<li>winsys/svga: Fix prime surface references also for guest-backed surfaces</li>
<li>st/xa: Bind destination before setting new state</li>
<li>st/xa: Make sure unused samplers are set to NULL</li>
</ul>
<p>Tom Stellard (1):</p>
<ul>
<li>configure: Use LLVM shared libraries by default</li>
</ul>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1.2 Release Notes / (May 5, 2014)</h1>
<p>
Mesa 10.1.2 is a bug fix release which fixes bugs found since the 10.1.1 release.
</p>
<p>
Mesa 10.1.2 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
37d79f94b1f41852a89d1fc3900bea76 MesaLib-10.1.2.tar.gz
28b60d15ac9f364da1e0155911eaf44e MesaLib-10.1.2.tar.bz2
05300039085a65fc53c5472c4bb5747a MesaLib-10.1.2.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=27499">Bug 27499</a> - [855GM i915] GL_LINE_STIPPLE displays incorrect colors</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=75723">Bug 75723</a> - (regression since Linux 3.14?) brw_get_graphics_reset_status: Assertion `brw-&gt;hw_ctx != ((void *)0)' failed</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=76894">Bug 76894</a> - Piglit/spec/EXT_framebuffer_object/fbo-bind-renderbuffer failed</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=77702">Bug 77702</a> - [i965 Bisected]Piglit spec/NV_conditional_render_blitframebuffer fails</li>
</ul>
<h2>Changes</h2>
<p>Ander Conselvan de Oliveira (2):</p>
<ul>
<li>gbm/dri: Fix out-of-memory error path in dri_device_create()</li>
<li>egl: Protect use of gbm_dri with ifdef HAVE_DRM_PLATFORM</li>
</ul>
<p>Anuj Phogat (27):</p>
<ul>
<li>mesa: Fix glGetVertexAttribi(GL_VERTEX_ATTRIB_ARRAY_SIZE)</li>
<li>swrast: Add glBlitFramebuffer to commands affected by conditional rendering</li>
<li>mesa: Fix error condition for multisample proxy texture targets</li>
<li>i965: Put an assertion to check valid varying_to_slot[varying]</li>
<li>i965: Fix component mask and varying_to_slot mapping for gl_Layer</li>
<li>i965: Fix component mask and varying_to_slot mapping for gl_ViewportIndex</li>
<li>mesa: Add helper function _mesa_is_format_integer()</li>
<li>mesa: Add error condition for integer formats in glGetTexImage()</li>
<li>mesa: Add an error condition in glGetFramebufferAttachmentParameteriv()</li>
<li>mesa: Fix error code generation in glReadPixels()</li>
<li>glsl: Allow overlapping locations for vertex input attributes</li>
<li>mesa: Fix querying location of nth element of an array variable</li>
<li>mesa: Use location VERT_ATTRIB_GENERIC0 for vertex attribute 0</li>
<li>glsl: Compile error if fs defines conflicting qualifiers for gl_FragCoord</li>
<li>glsl: Compile error if fs uses gl_FragCoord before first redeclaration</li>
<li>mesa: Add entry for extension ARB_texture_stencil8</li>
<li>mesa: Add error condition for format=STENCIL_INDEX in glGetTexImage()</li>
<li>i965: Fix crash in do_blit_readpixels()</li>
<li>mesa: Add missing types in _mesa_texstore_xx_xx() functions</li>
<li>mesa: Allow srcFormat=GL_DEPTH_STENCIL in _mesa_texstore_xx_xx() functions</li>
<li>mesa: Add new helper function _mesa_unpack_depth_stencil_row()</li>
<li>mesa: Add support to unpack depth-stencil texture in to FLOAT_32_UNSIGNED_INT_24_8_REV</li>
<li>mesa: Allow FLOAT_32_UNSIGNED_INT_24_8_REV in get_tex_depth_stencil()</li>
<li>i965: Add glBlitFramebuffer to commands affected by conditional rendering</li>
<li>glsl: Use switch to allow adding more shader types</li>
<li>glsl: Link error if fs defines conflicting qualifiers for gl_FragCoord</li>
<li>glsl: Apply the link error conditions to GL_ARB_fragment_coord_conventions</li>
</ul>
<p>Benjamin Bellec (1):</p>
<ul>
<li>mesa: fix GetStringi error message with correct function name</li>
</ul>
<p>Brian Paul (1):</p>
<ul>
<li>swrast: allocate swrast_texture_image::ImageSlices array if needed</li>
</ul>
<p>Carl Worth (4):</p>
<ul>
<li>docs: Add the MD5 sums for the 10.1.1 release tar files.</li>
<li>cherry-ignore: Ignore a patch causing a regression</li>
<li>cherry-ignore: Drop an ignored patch now that piglit has been updated.</li>
<li>Update VERSION to 10.1.2</li>
</ul>
<p>Chris Forbes (1):</p>
<ul>
<li>glsl: Only allow `invariant` on shader in/out between stages.</li>
</ul>
<p>Eric Anholt (1):</p>
<ul>
<li>i965: Fix render-to-texture in non-FinishRenderTexture cases.</li>
</ul>
<p>Ian Romanick (1):</p>
<ul>
<li>dri3: Enable GLX_MESA_query_renderer on DRI3 too</li>
</ul>
<p>Kenneth Graunke (2):</p>
<ul>
<li>i965: Don't enable reset notification support on Gen4-5.</li>
<li>i965: Actually emit PIPELINE_SELECT and 3DSTATE_VF_STATISTICS.</li>
</ul>
<p>Marek Olšák (10):</p>
<ul>
<li>r300g: don't crash when getting NULL colorbuffers</li>
<li>st/mesa: remove trailing NULL colorbuffers</li>
<li>r600g: fix edge flags and layered rendering on R600-R700</li>
<li>r600g: disable async DMA on R700</li>
<li>r600g: fix MSAA resolve on R6xx when the destination is 1D-tiled</li>
<li>r600g: fix flushing on RV670, RS780, RS880 again</li>
<li>r600g: fix buffer copying on R600-R700</li>
<li>r600g: fix for broken CULL_FRONT behavior on R6xx</li>
<li>r600g: fix for an MSAA hang on RV770</li>
<li>r600g: fix hang on RV740 by using DX_RASTERIZATION_KILL instead of SX_MISC</li>
</ul>
<p>Michel Dänzer (2):</p>
<ul>
<li>r600g: Disable LLVM by default at runtime for graphics</li>
<li>st/mesa: Fix NULL pointer dereference for incomplete framebuffers</li>
</ul>
<p>Neil Roberts (1):</p>
<ul>
<li>wayland: Fix the logic in disabling the prime capability</li>
</ul>
<p>Samuel Iglesias Gonsalvez (1):</p>
<ul>
<li>mesa: fix check for dummy renderbuffer in _mesa_FramebufferRenderbufferEXT()</li>
</ul>
<p>Thomas Hellstrom (1):</p>
<ul>
<li>st/xa: Cache render target surface</li>
</ul>
<p>nick (1):</p>
<ul>
<li>swrast: Fix vertex color in _swsetup_Translate()</li>
</ul>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1.3 Release Notes / (May 9, 2014)</h1>
<p>
Mesa 10.1.3 is a bug fix release which fixes bugs found since the 10.1.2 release.
</p>
<p>
Note: Mesa 10.1.3 is being released sooner than originally scheduled to make
available a fix for a performance rgression that was inadvertently introduced
to Mesa 10.1.2. The performance regression is reported to make vmware
swapbuffers fall back to software.
</p>
<p>
Mesa 10.1.3 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
665fe1656aaa2c37b32042068aff92cb MesaLib-10.1.3.tar.gz
ba6dbe2b9cab0b4de840c996b9b6a3ad MesaLib-10.1.3.tar.bz2
4e6f26330a63d3c47e62ac4bdead39e8 MesaLib-10.1.3.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=77245">Bug 77245</a> - Bogus GL_ARB_explicit_attrib_location layout identifier warnings</li>
</ul>
<h2>Changes</h2>
<p>Carl Worth (3):</p>
<ul>
<li>docs: Add MD5 sums for Mesa 10.1.2</li>
<li>get-pick-list.sh: Require explicit "10.1" for nominating stable patches</li>
<li>VERSION: Update to 10.1.3</li>
</ul>
<p>Kenneth Graunke (2):</p>
<ul>
<li>mesa: Fix MaxNumLayers for 1D array textures.</li>
<li>i965: Fix depth (array slices) computation for 1D_ARRAY render targets.</li>
</ul>
<p>Tapani Pälli (1):</p>
<ul>
<li>glsl: fix bogus layout qualifier warnings</li>
</ul>
<p>Thomas Hellstrom (1):</p>
<ul>
<li>st/xa: Fix performance regression introduced by commit "Cache render target surface"</li>
</ul>
</div>
</body>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1.4 Release Notes / (May 20, 2014)</h1>
<p>
Mesa 10.1.4 is a bug fix release which fixes bugs found since the 10.1.3 release.
</p>
<p>
Mesa 10.1.4 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
e934365d77f384bfaec844999440bef8 MesaLib-10.1.4.tar.gz
6fddee101f49b7409cd29994c34ddee7 MesaLib-10.1.4.tar.bz2
ba5f48e7d5e373922c804c2651fec6c1 MesaLib-10.1.4.zip
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=78225">Bug 78225</a> - Compile error due to undefined reference to `gbm_dri_backend', fix attached</li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=78537">Bug 78537</a> - no anisotropic filtering in a native Half-Life 2</li>
</ul>
<h2>Changes</h2>
<p>Brian Paul (1):</p>
<ul>
<li>mesa: fix double-freeing of dispatch tables inside glBegin/End.</li>
</ul>
<p>Carl Worth (3):</p>
<ul>
<li>docs: Add MD5 sums for 10.1.3</li>
<li>cherry-ignore: Roland and Michel agreed to drop these patches.</li>
<li>VERSION: Update to 10.1.4</li>
</ul>
<p>Emil Velikov (1):</p>
<ul>
<li>configure: error out if building GBM without dri</li>
</ul>
<p>Eric Anholt (1):</p>
<ul>
<li>i965/vs: Use samplers for UBOs in the VS like we do for non-UBO pulls.</li>
</ul>
<p>Ilia Mirkin (3):</p>
<ul>
<li>nv50/ir: make sure to reverse cond codes on all the OP_SET variants</li>
<li>nv50: fix setting of texture ms info to be per-stage</li>
<li>nv50/ir: fix integer mul lowering for u32 x u32 -&gt; high u32</li>
</ul>
<p>Michel Dänzer (1):</p>
<ul>
<li>radeonsi: Fix anisotropic filtering state setup</li>
</ul>
<p>Tom Stellard (2):</p>
<ul>
<li>configure.ac: Add LLVM_VERSION_PATCH to DEFINES</li>
<li>radeonsi: Enable geometry shaders with LLVM 3.4.1</li>
</ul>
</div>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1.5 Release Notes / (June 6, 2014)</h1>
<p>
Mesa 10.1.5 is a bug fix release which fixes bugs found since the 10.1.4 release.
</p>
<p>
Mesa 10.1.5 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>SHA256 checksums</h2>
<pre>
</pre>
<h2>New features</h2>
<p>None</p>
<h2>Bug fixes</h2>
<p>This list is likely incomplete.</p>
<ul>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=79115">Bug 79115</a> - </li>
<li><a href="https://bugs.freedesktop.org/show_bug.cgi?id=79421">Bug 79421</a> - </li>
</ul>
<h2>Changes</h2>
<p>Brian Paul (1):</p>
<ul>
<li>glsl: fix use-after free bug/crash in ast_declarator_list::hir()</li>
</ul>
<p>Carl Worth (5):</p>
<ul>
<li>docs: Add md5sums for 10.1.4 release</li>
<li>Merge remote-tracking branch 'origin/10.1' into 10.1</li>
<li>cherry-ignore: Ignore two commits.</li>
<li>Ignore a patch that is not needed for the 10.1 branch.</li>
<li>Update version to 10.1.5</li>
</ul>
<p>Emil Velikov (1):</p>
<ul>
<li>glx: do not leak dri3Display</li>
</ul>
<p>Ilia Mirkin (2):</p>
<ul>
<li>nv50/ir: fix s32 x s32 -&gt; high s32 multiply logic</li>
<li>nv50/ir: fix constant folding for OP_MUL subop HIGH</li>
</ul>
<p>James Legg (1):</p>
<ul>
<li>mesa: Fix unbinding GL_DEPTH_STENCIL_ATTACHMENT</li>
</ul>
<p>Jeremy Huddleston Sequoia (2):</p>
<ul>
<li>glapi: Avoid heap corruption in _glapi_table</li>
<li>darwin: Fix test for kCGLPFAOpenGLProfile support at runtime</li>
</ul>
<p>Pavel Popov (2):</p>
<ul>
<li>i965: Properly return *RESET* status in glGetGraphicsResetStatusARB</li>
<li>i965: Fix Line Stipple enable bit in 3DSTATE_SF for Haswell.</li>
</ul>
<p>Roland Scheidegger (1):</p>
<ul>
<li>llvmpipe: fix crash when not all attachments are populated in a fb</li>
</ul>
</div>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Mesa Release Notes</title>
<link rel="stylesheet" type="text/css" href="../mesa.css">
</head>
<body>
<div class="header">
<h1>The Mesa 3D Graphics Library</h1>
</div>
<iframe src="../contents.html"></iframe>
<div class="content">
<h1>Mesa 10.1 Release Notes / TBD</h1>
<p>
Mesa 10.1 is a new development release.
People who are concerned with stability and reliability should stick
with a previous release or wait for Mesa 10.1.1.
</p>
<p>
Mesa 10.1 implements the OpenGL 3.3 API, but the version reported by
glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
Some drivers don't support all the features required in OpenGL 3.3. OpenGL
3.3 is <strong>only</strong> available if requested at context creation
because compatibility contexts are not supported.
</p>
<h2>MD5 checksums</h2>
<pre>
TBD.
</pre>
<h2>New features</h2>
<p>
Note: some of the new features are only available with certain drivers.
</p>
<ul>
<li>GL_ARB_draw_indirect on i965.</li>
<li>GL_ARB_clear_buffer_object</li>
<li>GL_ARB_viewport_array on i965.</li>
<li>GL_ARB_map_buffer_alignment on all drivers that did not previously support
it.</li>
<li>GL_AMD_shader_trinary_minmax.</li>
<li>GL_EXT_framebuffer_blit on r200 and radeon.</li>
<li>Reduced memory usage for display lists.</li>
<li>OpenGL 3.3 support on nv50, nvc0, r600 and radeonsi</li>
</ul>
<h2>Bug fixes</h2>
TBD.
<h2>Changes</h2>
<ul>
<li>Removed support for the GL_MESA_texture_array extension. This extension
enabled the use of texture array with fixed-function and assembly fragment
shaders. No applications are known to use this extension.</li>
</ul>
</div>
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Mesa 3.1 release notes
PLEASE READ!!!!
New copyright
-------------
Mesa 3.1 will be distributed under an XFree86-style copyright instead
of the GNU LGPL.
New directories
---------------
All documentation files are now in the docs/ directory.
All shell scripts are now in the bin/ directory.
New library names
-----------------
Formerly, the main Mesa library was named libMesaGL.so (or libMesaGL.a)
and the GLU library was named libMesaGLU.so (or libMesaGLU.a).
Now, the main library is named libGL.so (or libGL.a) and the GLU library
is named libGLU.so (or libGLU.a).
The change allows Mesa to be more easily substituted for OpenGL.
Specifically, the linker/loader on some Unix-like systems won't
allow libMesaGL.so to be used instead of libGL.so if the application
was linked with the former.
Warning: if you have another OpenGL implementation installed on your
system (i.e. you have another OpenGL libGL.so) you'll have to be
carefull about which library (OpenGL or Mesa) you link against. Be
aware of -L linker flags and the value of the LD_LIBRARY_PATH environment
variable.
New library versioning
----------------------
Previously, the Mesa GL library was named libMesaGL.so.3.0
To better support Linux/OpenGL standards, the Mesa GL library is now
named libGL.so.1.2.030100 This indicates version 1.2 of the OpenGL spec
and Mesa implementation 3.1.0
In the long term this will allow better interoperability with other
OpenGL implementations, especially on Linux. In the short term,
OpenGL apps may have to be relinked to use the new library naming.
New makefiles
-------------
The old Makefiles found in the various directories have been renamed
to Makefile.X11 in order to prevent filename collisions with autoconfig-
generated Makefiles.
The top-level Makefile simply includes Makefile.X11
If your top-level Makefile get's overwritten/destroyed you can restore
it by copying Makefile.X11 to Makefile
New extensions
--------------
GL_EXT_stencil_wrap
Implements two new stencil operations: GL_INCR_WRAP_EXT and
GL_DECR_WRAP_EXT which allow stencil increment and decrement
without clamping.
GL_INGR_blend_func_separate
Allows specification of blend factors for RGB and Alpha independently.
(INGR = Intergraph)
GL_ARB_multitexture
Multiple simultaneous textures. (ARB = Architecture Review Board)
GL_NV_texgen_reflection
nVidia texgen extension for better reflection mapping.
GL_PGI_misc_hints
Assorted transformation hints.
GL_EXT_compiled_vertex_array
Compiled vertex arrays.
GL_EXT_clip_volume_hint
Allows one to disable clip volume (frustum) testing.
Extensions removed
------------------
GL_EXT_multitexture - obsolete in favor of GL_ARB_multitexture
Config file
-----------
By default, /etc/mesa.conf will be read when Mesa starts. This
file controls default hints, enable/disable of extensions, and
more. See the CONFIG file for documentation.
Optimizations
-------------
Keith Whitwell has contributed significant optimizations to Mesa's
vertex transformation code. Basically, the whole transformation
stage of Mesa has been rewritten.
It's impossible to give a speedup factor. You'll just have to
try your app and see how it performs.
Device Driver changes
---------------------
A bunch of new device driver functions have been added. See src/dd.h
Keith Harrison contributed many of them. I've been planning on adding
a bunch of functions like these to make writing hardware drivers easier.
More such function will probably be added in the near future.
Miscellaneous
-------------
util/glstate.c has some handy functions for debugging. Basically, it
offers a simple function for printing GL state variables. It's not
finished yet. There's a LOT more GLenum records to be added (see the
code). Anyone want to help?
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Mesa 3.2 release notes
PLEASE READ!!!!
Mesa 3.2 is a stabilization of the Mesa 3.1 release. No new features
have been added. For a list of bug fixes please read the VERSIONS file.
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Mesa 3.2.1 release notes
PLEASE READ!!!!
The Mesa 3.2.1 release mainly just fixes bugs since the 3.2 release.
See the VERSIONS file for the exact list.
GLU Polygon Tessellator
-----------------------
The GLU tessellator has been reverted back to the version included
with Mesa 3.0 since it's more stable. The Mesa 3.1/3.2 tessellator
implemented the GLU 1.3 specification but suffered from a number of
bugs.
Mesa implements GLU 1.1.
Ideally, people should use the GLU 1.3 library included in SGI's
OpenGL Sample Implementation (SI) available from
http://oss.sgi.com/projects/ogl-sample/
People are working to make easy-to-install Linux RPMs of the
GLU library.
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Mesa 3.3 release notes
July 21, 2000
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.2.1) designate stable releases.
Mesa 3.3 has a undergone many internal changes since version 3.2
and features a lot of new extensions. 3.3 is expected to be pretty
stable, but perhaps not as stable as 3.2 which has been used by
thousands of users over the past months.
Everyone is encouraged to try Mesa 3.3. Bugs should be reported to
the Mesa bug database on www.sourceforge.net.
Header file / GLenum changes
----------------------------
The gl.h and glu.h headers now use #defines to define all GL_* tokens
instead of C-language enums. This change improves Mesa/OpenGL
interoperability.
New API dispatch code
---------------------
The core Mesa gl* functions are now implemented with a new dispatch
(jump table) which will allow simultaneous direct/indirect rendering.
The code is found in the glapi*.[ch] files.
Of interest: the actual "glFooBar" functions are generated with
templatized code defined in glapitemp.h and included by glapi.c
The glapitemp.h template should be reusable for all sorts of OpenGL
projects.
The new dispatch code has also optimized with x86 assembly code.
This optimization eliminates copying the function arguments during
dispatch.
New thread support
------------------
Thread support in Mesa has been rewritten. The glthread.[ch] files
replace mthreads.[ch]. Thread safety is always enabled (on platforms
which support threads, that is). There is virtually no performance
penalty for typical single-thread applications. See the glapi.c
file for details.
The Xlib driver (XMesa) is now thread-safe as well. Be sure to
call XInitThreads() in your app first. See the xdemos/glthreads.c
demo for an example.
Make configuration changes
--------------------------
If you use the old-style (non GNU automake) method to build Mesa note
that several of the configuration names have changed:
Old name New name
------------- ----------------
linux-elf linux
linux linux-static
linux-386-elf linux-386
linux-386 linux-386-static
etc.
New extensions
--------------
GL_ARB_transpose_matrix
Adds glLoadTransposeMatrixARB() and glMultTransposeMatrixARB()
functions.
GL_ARB_texture_cube_map
For cube-based reflection mapping.
GL_EXT_texture_add_env
Adds GL_ADD texture environment mode.
See http://www.berkelium.com/OpenGL/EXT/texture_env_add.txt
GL_EXT_texture_lod_bias
Allows mipmapped texture blurring and sharpening.
GLX_EXT_visual_rating extension
This extension has no effect in stand-alone Mesa (used for DRI).
GL_HP_occlusion_test
Used for bounding box occlusion testing (see demos/occlude.c).
GL_SGIX_pixel_texture / GL_SGIS_pixel_texture
Lets glDraw/CopyPixels draw a texture coordinate image.
GL_SGI_color_matrix
Adds a color matrix and another set of scale and bias parameters
to the glDraw/CopyPixels paths.
GL_SGI_color_table
Adds additional color tables to the glDraw/Read/CopyPixels paths.
GL_EXT_histogram
Compute histograms for glDraw/Read/CopyPixels.
GL_EXT_blend_func_separate
This is the same as GL_INGR_blend_func_separate.
GL_ARB_texture_cube_mapping
6-face cube mapping, nicer than sphere mapping
GL_EXT_texture_env_combine
For advanced texture environment effects.
Documentation for all these functions can be found at
http://oss.sgi.com/projects/ogl-sample/registry/
GLX_SGI_make_current_read functionality
---------------------------------------
The functionality of this extension is needed for GLX 1.3 (and required
for the Linux/OpenGL standards base).
Implementing this function required a **DEVICE DRIVER CHANGE**.
The old SetBuffer() function has been replaced by SetReadBuffer() and
SetDrawBuffer(). All device drivers will have to be updated because
of this change.
The new function, glXMakeContextCurrent(), in GLX 1.3 now works in Mesa.
The xdemos/wincopy.c program demonstrates it.
Image-related code changes
--------------------------
The imaging path code used by glDrawPixels, glTexImage[123]D,
glTexSubImage[123], etc has been rewritten. It's now faster,
uses less memory and has several bug fixes. This work was
actually started in Mesa 3.1 with the glTexImage paths but has now
been carried over to glDrawPixels as well.
Device driver interface changes
-------------------------------
Added new functions for hardware stencil buffer support:
WriteStencilSpan
ReadStencilSpan
WriteStencilPixels
ReadStencilPixels
Removed old depth buffer functions:
AllocDepthBuffer
DepthTestSpan
DepthTestPixels
ReadDepthSpanFloat
ReadDepthSpanInt
Added new depth buffer functions:
WriteDepthSpan
ReadDepthSpan
WriteDepthPixels
ReadDepthPixels
These functions always read/write 32-bit GLuints. This will allow
drivers to have anywhere from 0 to 32-bit Z buffers without
recompiling for 16 vs 32 bits as was previously needed.
New texture image functions
The entire interface for texture image specification has been updated.
With the new functions, it's optional for Mesa to keep an internal copy
of all textures. Texture download should be a lot faster when the extra
copy isn't made.
Misc changes
TexEnv now takes a target argument
Removed UseGlobalTexturePalette (use Enable function instead)
Also added
ReadPixels
CopyPixels
The SetBufffer function has been replaced by SetDrawBuffer and
SetReadBuffer functions. This lets core Mesa independently
specify which buffer is to be used for reading and which for
drawing.
The Clear function's mask parameter has changed. Instead of
mask being the flags specified by the user to glClear, the
mask is now a bitmask of the DD_*_BIT flags in dd.h. Now
multiple color buffers can be specified for clearing (ala
glDrawBuffers). The driver's Clear function must also
check the glColorMask glIndexMask, and glStencilMask settings
and do the right thing. See the X/Mesa, OS/Mesa, or FX/Mesa
drivers for examples.
The depth buffer changes shouldn't be hard to make for existing
drivers. In fact, it should simply the code. Be careful with
the depthBits value passed to gl_create_context(). 1 is a bad
value! It should normally be 0, 16, 24, or 32.
gl_create_framebuffer() takes new arguments which explicitly tell
core Mesa which ancillary buffers (depth, stencil, accum, alpha)
should be implemented in software. Mesa hardware drivers should
carefully set these flags depending on which buffers are in the
graphics card.
Internal constants
------------------
Point and line size range and granularity limits are now stored
in the gl_constants struct, which is the Const member of GLcontext.
The limits are initialized from values in config.h but may be
overridden by device drivers to reflect the limits of that driver's
hardware.
Also added constants for NumAuxBuffers and SubPixelBits.
OpenGL Conformance
------------------
Mesa now passes all the OpenGL 1.1 conformance tests, except for
antialiased lines. AA lines fail on some, but not all, the tests.
In order to fix the remaining failures, a new AA line algorithm will
be needed (which computes coverage values for end-point fragments).
This will be done for Mesa 3.5/3.6.
OpenGL 1.2 GL_ARB_imaging subset
--------------------------------
Mesa 3.3 implements all the features of GL_ARB_imaging except for
image convolution. This will (hopefully) be done for Mesa 3.5/3.6.
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Mesa 3.4 release notes
November 3, 2000
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 3.4 simply fixes bugs found in the Mesa 3.3 release. For details,
see the VERSIONS file.
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Mesa 3.4.1 release notes
February 9, 2001
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 3.4.1 is a maintenance release that simply fixes bugs found since
the Mesa 3.4 release. For details, see the VERSIONS file.
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Mesa 3.4.2 release notes
May 17, 2001
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 3.4.2 is a maintenance release that simply fixes bugs found since
the Mesa 3.4.1 release. For details, see the VERSIONS file.
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Mesa 3.5 release notes
June 21, 2001
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.5) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
The biggest change in Mesa 3.5 is a complete overhaul of the source
code in order to make it more modular. This was driven by the DRI
hardware drivers. It simplifies the DRI drivers and opens the door
to hardware transform/clip/lighting (TCL). Keith Whitwell can take
the credit for that.
Driver Support
--------------
The device driver interface in Mesa 3.5 has changed a lot since Mesa 3.4
Not all of the older Mesa drivers have been updated. Here's the status:
Driver Status
---------------------- -----------
XMesa (Xlib) updated
OSMesa (off-screen) updated
FX (3dfx Voodoo1/2) updated
SVGA updated
GGI not updated
Windows/Win32 not updated
DOS/DJGPP not updated
BeOS not updated
Allegro not updated
D3D not updated
DOS not updated
We're looking for volunteers to update the remaining drivers. Please
post to the Mesa3d-dev mailing list if you can help.
GLU 1.3
-------
Mesa 3.5 includes the SGI Sample Implementation (SI) GLU library.
This version of GLU supports the GLU 1.3 specification. The old
Mesa GLU library implemented the 1.1 specification. The SI GLU
library should work much better.
You'll need a C++ compiler to compile the SI GLU library. This may
be a problem on some systems.
New Extensions
--------------
GL_EXT_convolution
Adds image convolution to glRead/Copy/DrawPixels/TexImage.
GL_ARB_imaging
This is the optional imaging subset of OpenGL 1.2.
It's the GL_EXT_convolution, GL_HP_convolution_border_modes,
GL_EXT_histogram, GL_EXT_color_table, GL_EXT_color_subtable
GL_EXT_blend_color, GL_EXT_blend_minmax, GL_EXT_blend_subtract
and GL_SGI_color_matrix extensions all rolled together.
This is supported in all software renderers but not in all
hardware drivers (3dfx for example).
GL_ARB_texture_compression
This is supported in Mesa but only used by the 3dfx DRI drivers
for Voodoo4 and later.
GL_ARB_texture_env_add
This is identical to GL_EXT_texture_env_add.
GL_NV_blend_square
Adds extra blend source and dest factors which allow squaring
of color values.
GL_EXT_fog_coord
Allows specification of a per-vertex fog coordinate instead of
having fog always computed from the eye distance.
GL_EXT_secondary_color
Allows specifying the secondary (specular) color for each vertex
instead of getting it only from lighting in GL_SEPARATE_SPECULAR_COLOR
mode.
GL_ARB_texture_env_combine
Basically the same as GL_EXT_texture_env_combine
GL_ARB_texture_env_add extension
Texture addition mode.
GL_ARB_texture_env_dot3 extension
Dot product texture environment.
GL_ARB_texture_border_clamp
Adds GL_CLAMP_TO_BORDER_ARB texture wrap mode
GL_SGIX_depth_texture, GL_SGIX_shadow and GL_SGIX_shadow_ambient
Implements a shadow casting algorithm based on depth map textures
GL_SGIS_generate_mipmap
Automatically generate lower mipmap images whenever the base mipmap
image is changed with glTexImage, glCopyTexImage, etc.
libOSMesa.so
------------
libOSMesa.so is a new library which contains the OSMesa interface for
off-screen rendering. Apps which need the OSMesa interface should link
with both -lOSMesa and -lGL. This change was made so that stand-alone
Mesa works the same way as XFree86/DRI's libGL.
Device Driver Changes / Core Mesa Changes
-----------------------------------------
The ctx->Driver.LogicOp() function has been removed. It used to
be called during state update in order to determine if the driver
could do glLogicOp() operations, and if not, set the SWLogicOpEnabled
flag. Drivers should instead examine the LogicOp state themselves
and choose specialized point, line, and triangle functions appropriately,
or fall back to software rendering. The Xlib driver was the only driver
to use this function. And since the Xlib driver no longer draws
points, lines or triangles using Xlib, the LogicOp function isn't needed.
The ctx->Driver.Dither() function has been removed. Drivers should
detect dither enable/disable via ctx->Driver.Enable() instead.
The ctx->Driver.IndexMask() and ctx->Driver.ColorMask() functions
are now just called from glIndexMask and glColorMask like the other
GL state-changing functions. They are no longer called from inside
gl_update_state(). Also, they now return void. The change was made
mostly for sake of uniformity.
The NEW_DRVSTATE[0123] flags have been removed. They weren't being used
and are obsolete w.r.t. the way state updates are done in DRI drivers.
Removed obsolete gl_create_visual() and gl_destroy_visual().
Renamed functions (new namespace):
old new
gl_create_framebuffer _mesa_create_framebuffer
gl_destroy_framebuffer _mesa_destroy_framebuffer
gl_create_context _mesa_create_context
gl_destroy_context _mesa_destroy_context
gl_context_initialize _mesa_context_initialize
gl_copy_context _mesa_copy_context
gl_make_current _mesa_make_current
gl_make_current2 _mesa_make_current2
gl_get_current_context _mesa_get_current_context
gl_flush_vb _mesa_flush_vb
gl_warning _mesa_warning
gl_compile_error _mesa_compile_error
All the drivers have been updated, but not all of them have been
tested since I can't test some platforms (DOS, Windows, Allegro, etc).
X/Mesa Driver
-------------
The source files for the X/Mesa driver in src/X have been renamed.
The xmesa[1234].c files are gone. The new files are xm_api.c,
xm_dd.c, xm_line.c, xm_span.c and xm_tri.c.
Multitexture
------------
Eight texture units are now supported by default.
OpenGL SI related changes
-------------------------
In an effort to make Mesa's internal interfaces more like the OpenGL
SI interfaces, a number of changes have been made:
1. Importing the SI's glcore.h file which defines a number of
interface structures like __GLimports and __GLexports.
2. Renamed "struct gl_context" to "struct __GLcontextRec".
3. Added __glCoreCreateContext() and __glCoreNopDispatch() functions.
4. The GLcontext member Visual is no longer a pointer.
5. New file: imports.c to setup default import functions for Mesa.
16-bit color channels
---------------------
There's experimental support for 16-bit color channels (64-bit pixels)
in Mesa 3.5. Only the OSMesa interface can be used for 16-bit rendering.
Type "make linux-osmesa16" in the top-level directory to build the
special libOSMesa16.so library.
This hasn't been tested very thoroughly yet so please file bug reports
if you have trouble.
In the future I hope to implement support for 32-bit, floating point
color channels.
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Mesa 4.0 release notes
October 18, 2001
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa version 4.0 signifies two things:
1. A stabilization of the 3.5 development release
2. Implementation of the OpenGL 1.3 specification
Note that the Mesa major version number is incremented with the OpenGL
minor version number:
Mesa 1.x == OpenGL 1.0
Mesa 2.x == OpenGL 1.1
Mesa 3.x == OpenGL 1.2
Mesa 4.x == OpenGL 1.3
New Features
------------
Mesa 3.5 already had all the new features of OpenGL 1.3, implemented as
extensions. These extensions were simply promoted to standard features:
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_dot3
GL_ARB_transpose_matrix
In Mesa 4.0 the functions defined by these extensions are now available
without the "ARB" suffix. For example, glLoadTransposeMatrixf() is now
a standard API function. The new functions in OpenGL 1.3 and Mesa 4.0 are:
glActiveTexture
glClientActiveTexture
glCompressedTexImage1D
glCompressedTexImage2D
glCompressedTexImage3D
glCompressedTexSubImage1D
glCompressedTexSubImage2D
glCompressedTexSubImage3D
glGetCompressedTexImage
glLoadTransposeMatrixd
glLoadTransposeMatrixf
glMultiTexCoord1d
glMultiTexCoord1dv
glMultiTexCoord1f
glMultiTexCoord1fv
glMultiTexCoord1i
glMultiTexCoord1iv
glMultiTexCoord1s
glMultiTexCoord1sv
glMultiTexCoord2d
glMultiTexCoord2dv
glMultiTexCoord2f
glMultiTexCoord2fv
glMultiTexCoord2i
glMultiTexCoord2iv
glMultiTexCoord2s
glMultiTexCoord2sv
glMultiTexCoord3d
glMultiTexCoord3dv
glMultiTexCoord3f
glMultiTexCoord3fv
glMultiTexCoord3i
glMultiTexCoord3iv
glMultiTexCoord3s
glMultiTexCoord3sv
glMultiTexCoord4d
glMultiTexCoord4dv
glMultiTexCoord4f
glMultiTexCoord4fv
glMultiTexCoord4i
glMultiTexCoord4iv
glMultiTexCoord4s
glMultiTexCoord4sv
glMultTransposeMatrixd
glMultTransposeMatrixf
glSampleCoverage
glSamplePass
GLX 1.4 is the companion to OpenGL 1.3. The only new features in GLX 1.4
are support for multisampling and the GLX_ARB_get_proc_address extension.
glXGetProcAddress() is the only new function in GLX 1.4.
Multisample and Texture Compression
-----------------------------------
The OpenGL 1.3 specification allows the multisample and texture compression
features to essentially be no-ops. For example, if you query for multisample
support you'll find none, but the API functions work.
Similarly, texture compression is not implemented by any of the software
drivers but you can specify a generic compressed texture format (like
GL_COMPRESSED_RGBA) to glTexImage2D and it'll be accepted.
Device Drivers
--------------
Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the
device driver. If the driver enables all the ARB extensions which are part
of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise,
it'll return "1.2".
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of the drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.3
OSMesa (off-screen) implements OpenGL 1.3
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.3
GGI needs updating
DOS/DJGPP needs updating
BeOS needs updating
Allegro needs updating
D3D needs updating
DOS needs updating
Special thanks go to Karl Schultz for updating the Windows driver.
The XFree86/DRI drivers have not yet been updated to use Mesa 4.0 as of
September 2001, but that should happen eventually.
Other Changes
-------------
See the VERSIONS file for more details about bug fixes, etc. in Mesa 4.0.
----------------------------------------------------------------------

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Mesa 4.0.1 release notes
December 17, 2001
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 4.0.1 only contains bug fixes since version 4.0.
See the docs/VERSIONS file for the list of bug fixes.
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Mesa 4.0.2 release notes
March 25, 2002
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 4.0.2 only contains bug fixes and a new DOS driver since version 4.0.1.
See the docs/VERSIONS file for the list of bug fixes.
Device Drivers
--------------
Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the
device driver. If the driver enables all the ARB extensions which are part
of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise,
it'll return "1.2".
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of the drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.3
OSMesa (off-screen) implements OpenGL 1.3
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.3
DOS/DJGPP implements OpenGL 1.3 (new in Mesa 4.0.2)
GGI needs updating
BeOS needs updating
Allegro needs updating
D3D needs updating
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Mesa 4.0.3 release notes
June 25, 2002
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Odd numbered versions (such as 3.3) designate new developmental releases.
Even numbered versions (such as 3.4) designate stable releases.
Mesa 4.0.3 basically just contains bug fixes version 4.0.2.
See the docs/VERSIONS file for the list of bug fixes.
The GGI driver has been updated, thanks to Filip Spacek.
Device Drivers
--------------
Mesa advertises itself as either OpenGL 1.2 or OpenGL 1.3 depending on the
device driver. If the driver enables all the ARB extensions which are part
of OpenGL 1.3 then glGetString(GL_VERSION) will return "1.3". Otherwise,
it'll return "1.2".
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of the drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.3
OSMesa (off-screen) implements OpenGL 1.3
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.3
DOS/DJGPP implements OpenGL 1.3 (new in Mesa 4.0.2)
GGI implements OpenGL 1.3
BeOS needs updating
Allegro needs updating
D3D needs updating
----------------------------------------------------------------------

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Mesa 4.1 release notes
October 29, 2002
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Even numbered versions (such as 4.0) designate stable releases.
Odd numbered versions (such as 4.1) designate new developmental releases.
New Features in Mesa 4.1
------------------------
New extensions. Docs at http://oss.sgi.com/projects/ogl-sample/registry/
GL_NV_vertex_program
NVIDIA's vertex programming extension
GL_NV_vertex_program1_1
A few features built on top of GL_NV_vertex_program
GL_ARB_window_pos
This is the ARB-approved version of GL_MESA_window_pos
GL_ARB_depth_texture
This is the ARB-approved version of GL_SGIX_depth_texture.
It allows depth (Z buffer) data to be stored in textures.
This is used by GL_ARB_shadow
GL_ARB_shadow
Shadow mapping with depth textures.
This is the ARB-approved version of GL_SGIX_shadow.
GL_ARB_shadow_ambient
Allows one to specify the luminance of shadowed pixels.
This is the ARB-approved version of GL_SGIX_shadow_ambient.
GL_EXT_shadow_funcs
Extends the set of GL_ARB_shadow texture comparision functions to
include all eight of standard OpenGL dept-test functions.
GL_ARB_point_parameters
This is basically the same as GL_EXT_point_parameters.
GL_ARB_texture_env_crossbar
Allows any texture combine stage to reference any texture source unit.
GL_NV_point_sprite
For rendering points as textured quads. Useful for particle effects.
GL_NV_texture_rectangle (new in 4.0.4 actually)
Allows one to use textures with sizes that are not powers of two.
Note that mipmapping and several texture wrap modes are not allowed.
GL_EXT_multi_draw_arrays
Allows arrays of vertex arrays to be rendered with one call.
GL_EXT_stencil_two_side
Separate stencil modes for front and back-facing polygons.
GLX_SGIX_fbconfig & GLX_SGIX_pbuffer
Off-screen rendering support.
GL_ATI_texture_mirror_once
Adds two new texture wrap modes: GL_MIRROR_CLAMP_ATI and
GL_MIRROR_CLAMP_TO_EDGE_ATI.
Device Driver Status
--------------------
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of these drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.3
OSMesa (off-screen) implements OpenGL 1.3
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.3
DOS/DJGPP implements OpenGL 1.3
GGI implements OpenGL 1.3
BeOS needs updating (underway)
Allegro needs updating
D3D needs updating
DOS needs updating
New features in GLUT
--------------------
1. Frames per second printing
GLUT now looks for an environment variable called "GLUT_FPS". If it's
set, GLUT will print out a frames/second statistic to stderr when
glutSwapBuffers() is called. By default, frames/second is computed
and displayed once every 5 seconds. You can specify a different
interval (in milliseconds) when you set the env var. For example
'export GLUT_FPS=1000' or 'setenv GLUT_FPS 1000' will set the interval
to one second.
NOTE: the demo or application must call the glutInit() function for
this to work. Otherwise, the env var will be ignored.
Finally, this feature may not be reliable in multi-window programs.
2. glutGetProcAddress() function
The new function:
void *glutGetProcAddress(const char *procName)
is a wrapper for glXGetProcAddressARB() and wglGetProcAddress(). It
lets you dynamically get the address of an OpenGL function at runtime.
The GLUT_API_VERSION has been bumped to 5, but I haven't bumped the
GLUT version number from 3.7 since that's probably Mark Kilgard's role.
This function should probably also be able to return the address of
GLUT functions themselves, but it doesn't do that yet.
XXX Things To Do Yet XXXX
-------------------------
isosurf with vertex program exhibits some missing triangles (probably
when recycling the vertex buffer for long prims).
Porting Info
------------
If you're porting a DRI or other driver from Mesa 4.0.x to Mesa 4.1 here
are some things to change:
1. ctx->Texture._ReallyEnabled is obsolete.
Since there are now 5 texture targets (1D, 2D, 3D, cube and rect) that
left room for only 6 units (6*5 < 32) in this field.
This field is being replaced by ctx->Texture._EnabledUnits which has one
bit per texture unit. If the bit k of _EnabledUnits is set, that means
ctx->Texture.Unit[k]._ReallyEnabled is non-zero. You'll have to look at
ctx->Texture.Unit[k]._ReallyEnabled to learn if the 1D, 2D, 3D, cube or
rect texture is enabled for unit k.
This also means that the constants TEXTURE1_*, TEXTURE2_*, etc are
obsolete.
The tokens TEXTURE0_* have been replaced as well (since there's no
significance to the "0" part:
old token new token
TEXTURE0_1D TEXTURE_1D_BIT
TEXTURE0_2D TEXTURE_2D_BIT
TEXTURE0_3D TEXTURE_3D_BIT
TEXTURE0_CUBE TEXTURE_CUBE_BIT
<none> TEXTURE_RECT_BIT
These tokens are only used for the ctx->Texture.Unit[i].Enabled and
ctx->Texture.Unit[i]._ReallyEnabled fields. Exactly 0 or 1 bits will
be set in _ReallyEnabled at any time!
Q: "What's the purpose of Unit[i].Enabled vs Unit[i]._ReallyEnabled?"
A: The user can enable GL_TEXTURE_1D, GL_TEXTURE_2D, etc for any
texure unit all at once (an unusual thing to do).
OpenGL defines priorities that basically say GL_TEXTURE_2D has
higher priority than GL_TEXTURE_1D, etc. Also, just because a
texture target is enabled by the user doesn't mean we'll actually
use that texture! If a texture object is incomplete (missing mip-
map levels, etc) it's as if texturing is disabled for that target.
The _ReallyEnabled field will have a bit set ONLY if the texture
target is enabled and complete. This spares the driver writer from
examining a _lot_ of GL state to determine which texture target is
to be used.
2. Tnl tokens changes
During the implementation of GL_NV_vertex_program some of the vertex
buffer code was changed. Specifically, the VERT_* bits defined in
tnl/t_context.h have been renamed to better match the conventions of
GL_NV_vertex_program. The old names are still present but obsolete.
Drivers should use the newer names.
For example: VERT_RGBA is now VERT_BIT_COLOR0 and
VERT_SPEC_RGB is now VERT_BIT_COLOR1.
3. Read/Draw Buffer changes
The business of setting the current read/draw buffers in Mesa 4.0.x
was complicated. It's much simpler now in Mesa 4.1.
Here are the changes:
- Renamed ctx->Color.DrawDestMask to ctx->Color._DrawDestMask
- Removed ctx->Color.DriverDrawBuffer
- Removed ctx->Pixel.DriverReadBuffer
- Removed ctx->Color.MultiDrawBuffer
- Removed ctx->Driver.SetDrawBuffer()
- Removed swrast->Driver.SetReadBuffer().
- Added ctx->Color._DrawDestMask - a bitmask of FRONT/BACK_LEFT/RIGHT_BIT
values to indicate the current draw buffers.
- Added ctx->Pixel._ReadSrcMask to indicate the source for pixel reading.
The value is _one_ of the FRONT/BACK_LEFT/RIGHT_BIT values.
- Added ctx->Driver.DrawBuffer() and ctx->Driver.ReadBuffer().
These functions exactly correspond to glDrawBuffer and glReadBuffer calls.
Many drivers will set ctx->Driver.DrawBuffer = _swrast_DrawBuffer and
leave ctx->Draw.ReadBuffer NULL.
DRI drivers should implement their own function for ctx->Driver.DrawBuffer
and use it to set the current hardware drawing buffer. You'll probably
also want to check for GL_FRONT_AND_BACK mode and fall back to software.
Call _swrast_DrawBuffer() too, to update the swrast state.
- Added swrast->Driver.SetBuffer().
This function should be implemented by all device drivers that use swrast.
Mesa will call it to specify the buffer to use for span reading AND
writing and point/line/triangle rendering.
There should be no confusion between current read or draw buffer anymore.
- Added swrast->CurrentBuffer to indicate which color buffer to read/draw.
Will be FRONT_LEFT_BIT, BACK_LEFT_BIT, FRONT_RIGHT_BIT or BACK_RIGHT_BIT.
This value is usually passed to swrast->Driver.SetBuffer().
4. _mesa_create_context() changes. This function now takes a pointer to
a __GLimports object. The __GLimports structure contains function
pointers to system functions like fprintf(), malloc(), etc.
The _mesa_init_default_imports() function can be used to initialize
a __GLimports object. Most device drivers (like the DRI drivers)
should use this.
5. In tnl's struct vertex_buffer, the field "ProjectedClipCoords"
has been replaced by "NdcPtr" to better match the OpenGL spec's
terminology.
6. Since GL_EXT_stencil_two_side has been implemented, many of the
ctx->Stencil fields are now 2-element arrays. For example,
"GLenum Ref" is now "GLenum Ref[2]" The [0] elements are the front-face
values and the [1] elements are the back-face values.
ctx->Stencil.ActiveFace is 0 or 1 to indicate the current face for
the glStencilOp/Func/Mask() functions.
ctx->Stencil.TestTwoSide controls whether or not 1 or 2-sided stenciling
is enabled.
7. Removed ctx->Polygon._OffsetAny. Removed ctx->Polygon.OffsetMRD.
8. GLfloat / GLchan changes:
- Changed ctx->Driver.ClearColor() to take GLfloat[4] instead of GLchan[4].
ctx->Color.ClearColor is now GLfloat[4] too.
- Changed ctx->Driver.AlphaRef() to take GLfloat instead of GLchan.
- ctx->Color.AlphaRef is now GLfloat.
- texObj->BorderColor is now GLfloat[4]. texObj->_BorderChan is GLchan[4].
This is part of an effort to remove all GLchan types from core Mesa so
that someday we can support 8, 16 and 32-bit color channels dynamically
at runtime, instead of at compile-time.
9. GLboolean ctx->Tranform.ClipEnabled[MAX_CLIP_PLANES] has been replaced
by GLuint ctx->Transform.ClipPlanesEnabled. The later is a bitfield.
10. There's a new matrix_stack type in mtypes.h used for the Modelview,
Projection, Color and Texcoord matrix stacks.
11. The ctx->Current.* fields have changed a lot. Now, there's a
ctx->Current.Attrib[] array for all vertex attributes which matches
the NV vertex program conventions.
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Mesa 5.0 release notes
November 13, 2002
PLEASE READ!!!!
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Even-numbered versions (such as 5.0) designate stable releases.
Odd-numbered versions (such as 4.1) designate new developmental releases.
Mesa 5.0 is basically just a stabilization of Mesa 4.1. To see a list of
bug fixes, etc. see the VERSIONS file.
New Features in Mesa 5.0
------------------------
Mesa 5.0 supports OpenGL 1.4. Note Mesa's versioning convention:
OpenGL Version Mesa Version
------------------------------
1.0 1.x
1.1 2.x
1.2 3.x
1.3 4.x
1.4 5.x
OpenGL 1.4 (and Mesa 5.0) incorporates the following OpenGL extensions as
standard features:
GL_ARB_depth_texture
GL_ARB_shadow
GL_ARB_texture_env_crossbar
GL_ARB_texture_mirror_repeat
GL_ARB_window_pos
GL_EXT_blend_color
GL_EXT_blend_func_separate
GL_EXT_blend_logic_op
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_fog_coord
GL_EXT_multi_draw_arrays
GL_EXT_point_parameters
GL_EXT_secondary_color
GL_EXT_stencil_wrap
GL_SGIS_generate_mipmap
Device Driver Status
--------------------
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of these drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.4
OSMesa (off-screen) implements OpenGL 1.4
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.4
DOS/DJGPP implements OpenGL 1.3
GGI implements OpenGL 1.3
DOS implements OpenGL 1.4
BeOS needs updating (underway)
Allegro needs updating
D3D needs updating
Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the
driver call the _mesa_enable_1_4_extensions() function.
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Mesa 5.0.1 release notes
March 30, 2003
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Even-numbered versions (such as 5.0.x) designate stable releases.
Odd-numbered versions (such as 4.1.x) designate new developmental releases.
Mesa 5.0.1 just fixes bugs found since the 5.0 release. See the VERSIONS
file for details.
Device Driver Status
--------------------
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of these drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.4
OSMesa (off-screen) implements OpenGL 1.4
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.4
DJGPP implements OpenGL 1.4
GGI implements OpenGL 1.3
BeOS implements OpenGL 1.4
Allegro needs updating
D3D needs updating
Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the
driver call the _mesa_enable_1_4_extensions() function.
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Mesa 5.0.2 release notes
September 5, 2003
Introduction
------------
Mesa uses an even/odd version number scheme like the Linux kernel.
Even-numbered versions (such as 5.0.x) designate stable releases.
Odd-numbered versions (such as 4.1.x) designate new developmental releases.
Mesa 5.0.2 just fixes bugs found since the 5.0.1 release. See the VERSIONS
file for details.
Device Driver Status
--------------------
A number of Mesa's software drivers haven't been actively maintained for
some time. We rely on volunteers to maintain many of these drivers.
Here's the current status of all included drivers:
Driver Status
---------------------- ---------------------
XMesa (Xlib) implements OpenGL 1.4
OSMesa (off-screen) implements OpenGL 1.4
FX (3dfx Voodoo1/2) implements OpenGL 1.3
SVGA implements OpenGL 1.3
Wind River UGL implements OpenGL 1.3
Windows/Win32 implements OpenGL 1.4
DJGPP implements OpenGL 1.4
GGI implements OpenGL 1.3
BeOS implements OpenGL 1.4
Allegro needs updating
D3D needs updating
Note: supporting OpenGL 1.4 (vs. 1.3 or 1.2) usually only requires that the
driver call the _mesa_enable_1_4_extensions() function.
----------------------------------------------------------------------

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