added Glide/Quake bug fix item

general cleanups - more to come.

Added P6 architecture timing to debug_xform routines.  Still need to add
test_all_vertex_functions test for the v16 asm.  Dynamic reconfiguration
of counter overhead for more accurate benchmarking.

Makefile.X11

@@ -1,20 +1,20 @@
-# $Id: Makefile.X11,v 1.12 1999/11/04 03:57:28 gareth Exp $
+# $Id: Makefile.X11,v 1.32.2.5 2000/10/26 19:35:53 brianp Exp $
 
 # Mesa 3-D graphics library
-# Version:  3.1
-# 
-# Copyright (C) 1999  Brian Paul   All Rights Reserved.
-# 
+# Version:  3.4
+#
+# Copyright (C) 1999-2000  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
@@ -66,25 +66,21 @@ default:
 	@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                for Linux systems, make shared .so libs"
+	@echo "  make linux-static         for Linux systems, make static .a libs"
+	@echo "  make linux-x86            for Linux on Intel, make shared .so libs"
+	@echo "  make linux-x86-static     for Linux on Intel, make static .a 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-386-pthread-shared-glide  for Linux w/ Intel assembly, linuxthreads, and 3Dfx Glide driver"
+	@echo "  make linux-x86-glide      for Linux w/ all x86 asm for Glide"
+	@echo "  make linux-alpha          for Linux on Alpha systems"
+	@echo "  make linux-alpha-static   for Linux on Alpha systems, static libs"
+	@echo "  make linux-ppc            for Linux on PowerPC systems"
+	@echo "  make linux-ppc-static     for Linux on PowerPC systems, static libs"
 	@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"
@@ -140,14 +136,12 @@ 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 \
 irix4 irix5 irix5-gcc irix5-dso irix6-o32 irix6-o32-dso \
-linux linux-debug linux-prof linux-elf linux-elf-debug linux-glide-debug \
+linux linux-static linux-debug linux-static-debug linux-prof \
+linux-x86 linux-x86-static linux-x86-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-386-pthread-shared-glide \
+linux-386-opt-V2-glide linux-x86-glide linux-glide-debug linux-glide-prof \
+linux-alpha-static linux-alpha \
+linux-ppc-static linux-ppc \
 linux-sparc \
 linux-sparc5-elf \
 linux-sparc-ultra \
@@ -159,30 +153,34 @@ 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      ] ; then touch src/depend      ; fi
+	if [ -d src-glu  ] ; then touch src-glu/depend  ; fi
 	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 widgets-sgi ] ; then touch widgets-sgi/depend ; fi
+	if [ -d src      ] ; then cd src      ; $(MAKE) -f Makefile.X11 $@ ; fi
+	if [ -d src-glu  ] ; then cd src-glu  ; $(MAKE) -f Makefile.X11 $@ ; fi
 	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
-
+	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 [ -d widgets-sgi ] ; then cd widgets-sgi; $(MAKE) -f Makefile.X11 $@ ; fi
 
 irix6-n32 irix6-n32-dso irix6-gcc-n32-sl irix-debug:
 	-mkdir lib32
-	touch src/depend
-	touch src-glu/depend
+	if [ -d src      ] ; then touch src/depend      ; fi
+	if [ -d src-glu  ] ; then touch src-glu/depend  ; fi
 	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 touch src-glut/depend ; fi
+	if [ -d widgets-sgi ] ; then touch widgets-sgi/depend ; fi
+	if [ -d src      ] ; then cd src      ; $(MAKE) -f Makefile.X11 $@ ; fi
+	if [ -d src-glu  ] ; then cd src-glu  ; $(MAKE) -f Makefile.X11 $@ ; fi
 	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
+	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 [ -d widgets-sgi ] ; then cd widgets-sgi; $(MAKE) -f Makefile.X11 $@ ; fi
 
 
 irix6-64 irix6-64-dso:
@@ -190,13 +188,15 @@ irix6-64 irix6-64-dso:
 	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 widgets-sgi ] ; then touch widgets-sgi/depend ; fi
+	if [ -d src      ] ; then cd src      ; $(MAKE) -f Makefile.X11 $@ ; fi
+	if [ -d src-glu  ] ; then cd src-glu  ; $(MAKE) -f Makefile.X11 $@ ; fi
 	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
+	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 [ -d widgets-sgi ] ; then cd widgets-sgi; $(MAKE) -f Makefile.X11 $@ ; fi
 
 
 amiwin:
@@ -209,25 +209,27 @@ beos-r4:
 	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     ] ; then cd src     ; $(MAKE) -f Makefile.BeOS-R4 $@ ; fi
+	if [ -d src-glu ] ; then cd src-glu ; $(MAKE) -f Makefile.BeOS-R4 $@ ; fi
+	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 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
+	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
+	if [ -d widgets-sgi ] ; then touch widgets-sgi/depend ; fi
+	if [ -d src      ] ; then cd src      ; $(MAKE) -f Makefile.X11 $@ ; fi
+	if [ -d src-glu  ] ; then cd src-glu  ; $(MAKE) -f Makefile.X11 $@ ; fi
+	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 widgets-sgi ] ; then cd widgets-sgi; $(MAKE) -f Makefile.X11 $@ ; fi
 
 macintosh:
 	@echo "See the README file for Macintosh intallation information"
@@ -259,19 +261,21 @@ 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 touch src-glut/depend ; fi
+	if [ -d widgets-sgi     ] ; then touch widgets-sgi/depend ; fi
+	if [ -d ggi             ] ; then touch ggi/depend      ; fi
+	if [ -d src             ] ; then cd src ; $(MAKE) -f Makefile.X11 $@ ; fi
+	if [ -d src/GGI/default ] ; then cd src/GGI/default ; $(MAKE)      ; fi
+	if [ -d src/GGI/display ] ; then cd src/GGI/display ; $(MAKE)      ; fi
+	if [ -d src-glut ] ; then cd src-glu  ; $(MAKE) -f Makefile.X11 $@ ; fi
 #	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 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 [ -d widgets-sgi ] ; then cd widgets-sgi; $(MAKE) -f Makefile.X11 $@ ; fi
 
 # if you change GGI_DEST please change it in ggimesa.conf, too.
 DESTDIR=/usr/local
@@ -301,6 +305,8 @@ clean:
 	-rm -f xdemos/*.o xdemos/*~
 	-rm -f samples/*.o samples/*~
 	-rm -f ggi/*.o ggi/demos/*.o ggi/*.a
+	-rm -f widgets-sgi/*.o
+	-rm -f widgets-mesa/*/*.o
 
 # Remove everything that can be remade
 realclean: clean
@@ -314,9 +320,11 @@ realclean: clean
 
 
 
-DIRECTORY = Mesa-3.1
-LIB_NAME = MesaLib-3.1beta3
-DEMO_NAME = MesaDemos-3.1beta3
+DIRECTORY = Mesa-3.4
+LIB_NAME = MesaLib-3.4
+DEMO_NAME = MesaDemos-3.4
+GLU_NAME = MesaGLU-3.4
+GLUT_NAME = GLUT-3.7
 
 
 LIB_FILES =	\
@@ -336,7 +344,6 @@ LIB_FILES =	\
 	$(DIRECTORY)/missing			\
 	$(DIRECTORY)/mkinstalldirs		\
 	$(DIRECTORY)/stamp-h.in			\
-	$(DIRECTORY)/configure			\
 	$(DIRECTORY)/docs/CONFIG		\
 	$(DIRECTORY)/docs/CONFORM		\
 	$(DIRECTORY)/docs/COPYING		\
@@ -347,7 +354,7 @@ LIB_FILES =	\
 	$(DIRECTORY)/docs/INSTALL.GNU		\
 	$(DIRECTORY)/docs/README		\
 	$(DIRECTORY)/docs/README.*		\
-	$(DIRECTORY)/docs/RELNOTES		\
+	$(DIRECTORY)/docs/RELNOTES*		\
 	$(DIRECTORY)/docs/VERSIONS		\
 	$(DIRECTORY)/docs/*.spec		\
 	$(DIRECTORY)/bin/README			\
@@ -361,19 +368,21 @@ LIB_FILES =	\
 	$(DIRECTORY)/mesawin32.mak		\
 	$(DIRECTORY)/Names.win			\
 	$(DIRECTORY)/win32-openstep.sh		\
-	$(DIRECTORY)/*.dja			\
+	$(DIRECTORY)/common.dja			\
 	$(DIRECTORY)/include/GL/Makefile.in	\
 	$(DIRECTORY)/include/GL/Makefile.am	\
 	$(DIRECTORY)/include/GL/dosmesa.h	\
-	$(DIRECTORY)/include/GL/foomesa.h	\
+	$(DIRECTORY)/include/GL/amesa.h		\
 	$(DIRECTORY)/include/GL/fxmesa.h	\
 	$(DIRECTORY)/include/GL/ggimesa.h	\
 	$(DIRECTORY)/include/GL/gl.h		\
+	$(DIRECTORY)/include/GL/glext.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/mesa_wgl.h	\
 	$(DIRECTORY)/include/GL/mglmesa.h	\
 	$(DIRECTORY)/include/GL/osmesa.h	\
 	$(DIRECTORY)/include/GL/svgamesa.h	\
@@ -430,56 +439,92 @@ LIB_FILES =	\
 	$(DIRECTORY)/src/GGI/include/ggi/mesa/Makefile.am	\
 	$(DIRECTORY)/src/GGI/include/ggi/mesa/Makefile.in	\
 	$(DIRECTORY)/src/GGI/include/ggi/mesa/*.h		\
-	$(DIRECTORY)/src/KNOWN_BUGS		\
-	$(DIRECTORY)/src/MGL/*.[ch]		\
-	$(DIRECTORY)/src/MGL/*.txt		\
-	$(DIRECTORY)/src/OSmesa/Makefile.am	\
-	$(DIRECTORY)/src/OSmesa/Makefile.in	\
-	$(DIRECTORY)/src/OSmesa/*.[ch]		\
-	$(DIRECTORY)/src/S3/*.[ch]		\
-	$(DIRECTORY)/src/S3/*.def		\
-	$(DIRECTORY)/src/S3/*.mak		\
-	$(DIRECTORY)/src/S3/*.rc		\
-	$(DIRECTORY)/src/SVGA/Makefile.am	\
-	$(DIRECTORY)/src/SVGA/Makefile.in	\
-	$(DIRECTORY)/src/SVGA/*.[ch]		\
-	$(DIRECTORY)/src/Windows/*.[ch]		\
-	$(DIRECTORY)/src/Windows/*.def		\
-	$(DIRECTORY)/src/X/Makefile.am		\
-	$(DIRECTORY)/src/X/Makefile.in		\
-	$(DIRECTORY)/src/X/*.[ch]		\
-	$(DIRECTORY)/src/X86/*.[ch]		\
-	$(DIRECTORY)/src/X86/Makefile.am	\
-	$(DIRECTORY)/src/X86/Makefile.in	\
-	$(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/Makefile.am		\
-	$(DIRECTORY)/util/Makefile.in		\
-	$(DIRECTORY)/util/*.[ch]		\
-	$(DIRECTORY)/util/sampleMakefile	\
-	$(DIRECTORY)/BeOS/Makefile		\
-	$(DIRECTORY)/BeOS/*.cpp			
-
-# old stuff
-#	$(DIRECTORY)/Win32			\
-#	$(DIRECTORY)/win32
-
-#	$(DIRECTORY)/OpenStep			\
-#
-#
-
+	$(DIRECTORY)/src/KNOWN_BUGS				\
+	$(DIRECTORY)/src/OSmesa/Makefile.am			\
+	$(DIRECTORY)/src/OSmesa/Makefile.in			\
+	$(DIRECTORY)/src/OSmesa/*.[ch]				\
+	$(DIRECTORY)/src/S3/*.[ch]				\
+	$(DIRECTORY)/src/S3/*.def				\
+	$(DIRECTORY)/src/S3/*.mak				\
+	$(DIRECTORY)/src/S3/*.rc				\
+	$(DIRECTORY)/src/SVGA/Makefile.am			\
+	$(DIRECTORY)/src/SVGA/Makefile.in			\
+	$(DIRECTORY)/src/SVGA/*.[ch]				\
+	$(DIRECTORY)/src/Windows/*.[ch]				\
+	$(DIRECTORY)/src/Windows/*.def				\
+	$(DIRECTORY)/src/X/Makefile.am				\
+	$(DIRECTORY)/src/X/Makefile.in				\
+	$(DIRECTORY)/src/X/*.[ch]				\
+	$(DIRECTORY)/src/X86/*.[ch]				\
+	$(DIRECTORY)/src/X86/Makefile.am			\
+	$(DIRECTORY)/src/X86/Makefile.in			\
+	$(DIRECTORY)/src/X86/*.S				\
+	$(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/depend				\
+	$(DIRECTORY)/src-glu/*.[ch]				\
+	$(DIRECTORY)/widgets-mesa/ChangeLog			\
+	$(DIRECTORY)/widgets-mesa/INSTALL			\
+	$(DIRECTORY)/widgets-mesa/Makefile.in			\
+	$(DIRECTORY)/widgets-mesa/README			\
+	$(DIRECTORY)/widgets-mesa/TODO				\
+	$(DIRECTORY)/widgets-mesa/configure			\
+	$(DIRECTORY)/widgets-mesa/demos/ChangeLog		\
+	$(DIRECTORY)/widgets-mesa/demos/Cube			\
+	$(DIRECTORY)/widgets-mesa/demos/Ed			\
+	$(DIRECTORY)/widgets-mesa/demos/Makefile.in		\
+	$(DIRECTORY)/widgets-mesa/demos/Mcube			\
+	$(DIRECTORY)/widgets-mesa/demos/Tea			\
+	$(DIRECTORY)/widgets-mesa/demos/*.[ch]			\
+	$(DIRECTORY)/widgets-mesa/demos/events			\
+	$(DIRECTORY)/widgets-mesa/include/GL/ChangeLog		\
+	$(DIRECTORY)/widgets-mesa/include/GL/*.h		\
+	$(DIRECTORY)/widgets-mesa/include/GL/Makefile.in	\
+	$(DIRECTORY)/widgets-mesa/man/ChangeLog			\
+	$(DIRECTORY)/widgets-mesa/man/GL*			\
+	$(DIRECTORY)/widgets-mesa/man/Makefile.in		\
+	$(DIRECTORY)/widgets-mesa/man/Mesa*			\
+	$(DIRECTORY)/widgets-mesa/src/ChangeLog			\
+	$(DIRECTORY)/widgets-mesa/src/*.c			\
+	$(DIRECTORY)/widgets-mesa/src/Makefile.in		\
+	$(DIRECTORY)/widgets-sgi/*.[ch]				\
+	$(DIRECTORY)/widgets-sgi/Makefile*			\
+	$(DIRECTORY)/widgets-sgi/README				\
+	$(DIRECTORY)/util/README				\
+	$(DIRECTORY)/util/Makefile.am				\
+	$(DIRECTORY)/util/Makefile.in				\
+	$(DIRECTORY)/util/*.[ch]				\
+	$(DIRECTORY)/util/sampleMakefile			\
+	$(DIRECTORY)/vms/analyze_map.com			\
+	$(DIRECTORY)/vms/xlib.opt				\
+	$(DIRECTORY)/vms/xlib_share.opt				\
+	$(DIRECTORY)/BeOS/Makefile				\
+	$(DIRECTORY)/BeOS/*.cpp					\
+	$(DIRECTORY)/WIN32/NMAKE.MAK				\
+	$(DIRECTORY)/WIN32/NMAKE.MIF				\
+	$(DIRECTORY)/WIN32/RES/*rc				\
+	$(DIRECTORY)/WIN32/RES/*def				\
+	$(DIRECTORY)/WIN32/RULES/lib.*				\
+	$(DIRECTORY)/WIN32/RULES/progs.*			\
+	$(DIRECTORY)/macos/README				\
+	$(DIRECTORY)/macos/gli_api/*.h				\
+	$(DIRECTORY)/macos/cglpane/CGLPane.*			\
+	$(DIRECTORY)/macos/include-mac/*.h			\
+	$(DIRECTORY)/macos/libraries/*.stub			\
+	$(DIRECTORY)/macos/libraries/*Stub			\
+	$(DIRECTORY)/macos/projects/*.mcp			\
+	$(DIRECTORY)/macos/projects/*.exp			\
+	$(DIRECTORY)/macos/projects/*.h				\
+	$(DIRECTORY)/macos/resources/*.c			\
+	$(DIRECTORY)/macos/resources/*.r			\
+	$(DIRECTORY)/macos/resources/*.rsrc			\
+	$(DIRECTORY)/macos/src-agl/*.exp			\
+	$(DIRECTORY)/macos/src-agl/*.[ch]			\
+	$(DIRECTORY)/macos/src-gli/*.[ch]			\
+	$(DIRECTORY)/OpenStep
 
 DEMO_FILES =	\
 	$(DIRECTORY)/include/GL/glut.h		\
@@ -499,7 +544,9 @@ DEMO_FILES =	\
 	$(DIRECTORY)/demos/Makefile*		\
 	$(DIRECTORY)/demos/descrip.mms		\
 	$(DIRECTORY)/demos/*.[ch]		\
+	$(DIRECTORY)/demos/*.cxx		\
 	$(DIRECTORY)/demos/*.dat		\
+	$(DIRECTORY)/demos/README		\
 	$(DIRECTORY)/xdemos/Makefile*		\
 	$(DIRECTORY)/xdemos/descrip.mms		\
 	$(DIRECTORY)/xdemos/*.[cf]		\
@@ -509,13 +556,52 @@ DEMO_FILES =	\
 	$(DIRECTORY)/samples/Makefile*		\
 	$(DIRECTORY)/samples/README		\
 	$(DIRECTORY)/samples/*.c		\
-	$(DIRECTORY)/samples/*.dja		\
-	$(DIRECTORY)/3Dfx			\
 	$(DIRECTORY)/mtdemos			\
 	$(DIRECTORY)/ggi
 
+GLU_FILES = \
+	$(DIRECTORY)/Makefile*			\
+	$(DIRECTORY)/Make-config		\
+	$(DIRECTORY)/bin/mklib*			\
+	$(DIRECTORY)/include/GL/gl.h		\
+	$(DIRECTORY)/include/GL/gl_mangle.h	\
+	$(DIRECTORY)/include/GL/glext.h		\
+	$(DIRECTORY)/include/GL/glu.h		\
+	$(DIRECTORY)/include/GL/glu_mangle.h	\
+	$(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/depend		\
+	$(DIRECTORY)/src-glu/*.[ch]
+
+GLUT_FILES = \
+	$(DIRECTORY)/Makefile*			\
+	$(DIRECTORY)/Make-config		\
+	$(DIRECTORY)/bin/mklib*			\
+	$(DIRECTORY)/include/GL/gl.h		\
+	$(DIRECTORY)/include/GL/gl_mangle.h	\
+	$(DIRECTORY)/include/GL/glext.h		\
+	$(DIRECTORY)/include/GL/glu.h		\
+	$(DIRECTORY)/include/GL/glu_mangle.h	\
+	$(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
+
 
 lib_tar:
+	cp Makefile.X11 Makefile ; \
 	cd .. ; \
 	tar -cvf $(LIB_NAME).tar $(LIB_FILES) ; \
 	gzip $(LIB_NAME).tar ; \
@@ -527,14 +613,30 @@ demo_tar:
 	gzip $(DEMO_NAME).tar ; \
 	mv $(DEMO_NAME).tar.gz $(DIRECTORY)
 
+glu_tar:
+	cp Makefile.X11 Makefile ; \
+	cd .. ; \
+	tar -cvf $(GLU_NAME).tar $(GLU_FILES) ; \
+	gzip $(GLU_NAME).tar ; \
+	mv $(GLU_NAME).tar.gz $(DIRECTORY)
+
+glut_tar:
+	cp Makefile.X11 Makefile ; \
+	cd .. ; \
+	tar -cvf $(GLUT_NAME).tar $(GLUT_FILES) ; \
+	gzip $(GLUT_NAME).tar ; \
+	mv $(GLUT_NAME).tar.gz $(DIRECTORY)
+
+
 lib_zip:
-	-rm $(LIB_NAME).zip
+	-rm $(LIB_NAME).zip ; \
+	cp Makefile.X11 Makefile ; \
 	cd .. ; \
 	zip -r $(LIB_NAME).zip $(LIB_FILES) ; \
 	mv $(LIB_NAME).zip $(DIRECTORY)
 
 demo_zip:
-	-rm $(DEMO_NAME).zip
+	-rm $(DEMO_NAME).zip ; \
 	cd .. ; \
 	zip -r $(DEMO_NAME).zip $(DEMO_FILES) ; \
 	mv $(DEMO_NAME).zip $(DIRECTORY)

docs/MESA_copy_sub_buffer.spec

@@ -0,0 +1,88 @@
+Name
+
+    MESA_copy_sub_buffer
+
+Name Strings
+
+    GLX_MESA_copy_sub_buffer
+
+Contact
+
+    Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+    Shipping since Mesa 2.6 in February, 1998.
+
+Version
+
+    Last Modified Date:  8 June 2000
+
+Number
+
+    215
+
+Dependencies
+
+    OpenGL 1.0 or later is required.
+    GLX 1.0 or later is required.
+
+Overview
+
+    The glxCopySubBufferMESA() function copies a rectangular region
+    of the back color buffer to the front color buffer.  This can be
+    used to quickly repaint 3D windows in response to expose events
+    when the back color buffer cannot be damaged by other windows.
+
+IP Status
+
+    Open-source; freely implementable.
+
+Issues
+
+    None.
+
+New Procedures and Functions
+
+    void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
+			       int x, int y, int width, int height );
+
+New Tokens
+
+    None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+    Add to section 3.3.10 Double Buffering:
+
+    The function
+
+	 void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
+				    int x, int y, int width, int height );
+
+    may be used to copy a rectangular region of the back color buffer to
+    the front color buffer.  This can be used to quickly repaint 3D windows
+    in response to expose events when the back color buffer cannot be
+    damaged by other windows.
+
+    <x> and <y> indicates the lower-left corner of the region to copy and
+    <width> and <height> indicate the size in pixels.  Coordinate (0,0)
+    corresponds to the lower-left pixel of the window, like glReadPixels.
+
+GLX Protocol
+
+    None at this time.  The extension is implemented in terms of ordinary
+    Xlib protocol inside of Mesa.
+
+Errors
+
+    None.
+
+New State
+
+    None.
+
+Revision History
+
+    8 June 2000 - initial specification
+

docs/MESA_pixmap_colormap.spec

@@ -0,0 +1,90 @@
+Name
+
+    MESA_pixmap_colormap
+
+Name Strings
+
+    GLX_MESA_pixmap_colormap
+
+Contact
+
+    Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+    Shipping since Mesa 1.2.8 in May, 1996.
+
+Version
+
+    Last Modified Date:  8 June 2000
+
+Number
+
+    216
+
+Dependencies
+
+    OpenGL 1.0 or later is required.
+    GLX 1.0 or later is required.
+
+Overview
+
+    Since Mesa allows RGB rendering into drawables with PseudoColor,
+    StaticColor, GrayScale and StaticGray visuals, Mesa needs a colormap
+    in order to compute pixel values during rendering.
+
+    The colormap associated with a window can be queried with normal
+    Xlib functions but there is no colormap associated with pixmaps.
+
+    The glXCreateGLXPixmapMESA function is an alternative to glXCreateGLXPixmap
+    which allows specification of a colormap.
+
+IP Status
+
+    Open-source; freely implementable.
+
+Issues
+
+    None.
+
+New Procedures and Functions
+
+    GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+				      Pixmap pixmap, Colormap cmap );
+
+New Tokens
+
+    None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+    Add to section 3.4.2 Off Screen Rendering
+
+    The Mesa implementation of GLX allows RGB rendering into X windows and
+    pixmaps of any visual class, not just TrueColor or DirectColor.  In order
+    to compute pixel values from RGB values Mesa requires a colormap.
+
+    The function
+
+	GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+					  Pixmap pixmap, Colormap cmap );
+
+    allows one to create a GLXPixmap with a specific colormap.  The image
+    rendered into the pixmap may then be copied to a window (which uses the
+    same colormap and visual) with the expected results.
+
+GLX Protocol
+
+    None since this is a client-side extension.
+
+Errors
+
+    None.
+
+New State
+
+    None.
+
+Revision History
+
+    8 June 2000 - initial specification

docs/MESA_release_buffers.spec

@@ -0,0 +1,85 @@
+Name
+
+    MESA_release_buffers
+
+Name Strings
+
+    GLX_MESA_release_buffers
+
+Contact
+
+    Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+    Shipping since Mesa 2.0 in October, 1996.
+
+Version
+
+    Last Modified Date:  8 June 2000
+
+Number
+
+    217
+
+Dependencies
+
+    OpenGL 1.0 or later is required.
+    GLX 1.0 or later is required.
+
+Overview
+
+    Mesa's implementation of GLX is entirely implemented on the client side.
+    Therefore, Mesa cannot immediately detect when an X window or pixmap is
+    destroyed in order to free any ancilliary data associated with the window
+    or pixmap.
+
+    The glxMesaReleaseBuffers() function can be used to explicitly indicate
+    when the back color buffer, depth buffer, stencil buffer, and/or accum-
+    ulation buffer associated with a drawable can be freed.
+
+IP Status
+
+    Open-source; freely implementable.
+
+Issues
+
+    None.
+
+New Procedures and Functions
+
+    Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+
+New Tokens
+
+    None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+    The function
+
+	Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+
+    causes all software ancilliary buffers (back buffer, depth, stencil,
+    accum, etc) associated with the named drawable to be immediately
+    deallocated.  True is returned if <d> is a valid Mesa GLX drawable,
+    else False is returned.  After calling glXReleaseBuffersMESA, the
+    drawable should no longer be used for GL rendering.  Results of
+    attempting to do so are undefined.
+
+
+GLX Protocol
+
+    None, since this is a client-side operation.
+
+Errors
+
+    None.
+
+New State
+
+    None.
+
+Revision History
+
+    8 June 2000 - initial specification

docs/MESA_resize_buffers.spec

@@ -16,11 +16,11 @@ Status
 
 Version
 
-    $Id: MESA_resize_buffers.spec,v 1.1 1999/07/20 00:30:41 brianp Exp $
+    $Id: MESA_resize_buffers.spec,v 1.2 2000/04/04 23:29:32 brianp Exp $
 
 Number
 
-    XXX none assigned
+    196
 
 Dependencies
 

docs/MESA_set_3dfx_mode.spec

@@ -0,0 +1,85 @@
+Name
+
+    MESA_set_3dfx_mode
+
+Name Strings
+
+    GLX_MESA_set_3dfx_mode
+
+Contact
+
+    Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+    Shipping since Mesa 2.6 in February, 1998.
+
+Version
+
+    Last Modified Date:  8 June 2000
+
+Number
+
+    218
+
+Dependencies
+
+    OpenGL 1.0 or later is required.
+    GLX 1.0 or later is required.
+
+Overview
+
+    The Mesa Glide driver allows full-screen rendering or rendering into
+    an X window.  The glXSet3DfxModeMESA() function allows an application
+    to switch between full-screen and windowed rendering.
+
+IP Status
+
+    Open-source; freely implementable.
+
+Issues
+
+    None.
+
+New Procedures and Functions
+
+    GLboolean glXSet3DfxModeMESA( GLint mode );
+
+New Tokens
+
+    GLX_3DFX_WINDOW_MODE_MESA	    0x1
+    GLX_3DFX_FULLSCREEN_MODE_MESA   0x2
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+    The Mesa Glide device driver allows either rendering in full-screen
+    mode or rendering into an X window.  An application can switch between
+    full-screen and window rendering with the command:
+
+	GLboolean glXSet3DfxModeMESA( GLint mode );
+
+    <mode> may either be GLX_3DFX_WINDOW_MODE_MESA to indicate window
+    rendering or GLX_3DFX_FULLSCREEN_MODE_MESA to indicate full-screen mode.
+
+    GL_TRUE is returned if <mode> is valid and the operation completed
+    normally.  GL_FALSE is returned if <mode> is invalid or if the Glide
+    driver is not being used.
+
+    Note that only one drawable and context can be created at any given
+    time with the Mesa Glide driver.
+
+GLX Protocol
+
+    None since this is a client-side extension.
+
+Errors
+
+    None.
+
+New State
+
+    None.
+
+Revision History
+
+    8 June 2000 - initial specification

docs/MESA_window_pos.spec

@@ -16,11 +16,11 @@ Status
 
 Version
 
-    $Id: MESA_window_pos.spec,v 1.1 1999/07/20 00:30:41 brianp Exp $
+    $Id: MESA_window_pos.spec,v 1.3 2000/04/04 23:29:32 brianp Exp $
 
 Number
 
-    XXX non assigned
+    197
 
 Dependencies
 
@@ -33,7 +33,7 @@ Overview
     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
+    rely on 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
@@ -51,6 +51,26 @@ New Procedures and Functions
     void WindowPos2fMESA(float x, float y)
     void WindowPos2iMESA(int x, int y)
     void WindowPos2sMESA(short x, short y)
+    void WindowPos2ivMESA(const int *p)
+    void WindowPos2svMESA(const short *p)
+    void WindowPos2fvMESA(const float *p)
+    void WindowPos2dvMESA(const double *p)
+    void WindowPos3iMESA(int x, int y, int z)
+    void WindowPos3sMESA(short x, short y, short z)
+    void WindowPos3fMESA(float x, float y, float z)
+    void WindowPos3dMESA(double x, double y, double z)
+    void WindowPos3ivMESA(const int *p)
+    void WindowPos3svMESA(const short *p)
+    void WindowPos3fvMESA(const float *p)
+    void WindowPos3dvMESA(const double *p)
+    void WindowPos4iMESA(int x, int y, int z, int w)
+    void WindowPos4sMESA(short x, short y, short z, short w)
+    void WindowPos4fMESA(float x, float y, float z, float w)
+    void WindowPos4dMESA(double x, double y, double z, double )
+    void WindowPos4ivMESA(const int *p)
+    void WindowPos4svMESA(const short *p)
+    void WindowPos4fvMESA(const float *p)
+    void WindowPos4dvMESA(const double *p)
 
 New Tokens
 
@@ -64,7 +84,7 @@ Additions to Chapter 2 of the OpenGL 1.2 Specification (OpenGL Operation)
       WindowPosMESA commands:
 
          void WindowPos{234}{sidf}MESA( T coords );
-         void Window Pos{234}{sidf}vMESA( T coords );
+         void WindowPos{234}{sidf}vMESA( T coords );
 
       WindosPos4MESA takes four values indicating x, y, z, and w.
       WindowPos3MESA (or WindowPos2MESA) is analaguos, but sets only
@@ -78,14 +98,6 @@ Additions to Chapter 2 of the OpenGL 1.2 Specification (OpenGL Operation)
       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
@@ -100,7 +112,6 @@ Errors
     INVALID_OPERATION is generated if WindowPosMESA is called betweeen
     Begin and End.
 
-
 New State
 
     None.
@@ -112,3 +123,5 @@ New Implementation Dependent State
 Revision History
 
   * Revision 1.0 - Initial specification
+  * Revision 1.1 - Minor clean-up  (7 Jan 2000, Brian Paul)
+

docs/README.3DFX

@@ -1,12 +1,8 @@
 
-                     3Dfx Glide device driver for Mesa 3.1
+                     3Dfx Glide device driver for Mesa 3.4
 				(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 ?
 ------------------
@@ -189,9 +185,9 @@ Doing more with Mesa & Linux Glide:
 	   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
+		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
@@ -209,6 +205,9 @@ Doing more with Mesa & Linux Glide:
 	visual depth doesn't match the Voodoo framebufffer bit per pixel, it
 	is required also a pixel format translation).
 
+	NOTE: the in-window rendering feature only works with double-buffering.
+
+
         On the fly switching between in window rendering and full screen rendering
 	--------------------------------------------------------------------------
 
@@ -327,6 +326,11 @@ The Mesa/Voodoo Environment Variables:
 		export MESA_FX_INFO=1
           you will get some useful statistic.
 
+        - If you define the env. var. MESA_FX_NO_SIGNALS:
+		export MESA_FX_NO_SIGNALS=1
+          Mesa/FX will not install atexit() or signal() handlers.
+
+
 
 Know BUGS and Problems:
 -----------------------
@@ -541,9 +545,7 @@ No because the Linux Glide doesn't (yet) support the Voodoo Rush.
 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).
+Yes.
 
 
 11. Which is the best make target for compiling the Mesa for

docs/README.BEOS

@@ -28,7 +28,7 @@ working.  No optimizations have been made at this time.
 
 Compiling
 
-Simply cd to the Mesa-3.x directory and type "make beos-r4".
+In the Mesa-3.x directory type "make -f Makefile.X11 beos-r4".
 When it finishes the libMesaGL.so and libMesaGLU.so libraries for
 BeOS will be in the Mesa-3.x/lib/ directory.
 
@@ -99,4 +99,4 @@ of February, 1999.
 
 
 ----------------------------------------------------------------------
-$Id: README.BEOS,v 1.5 1999/03/03 02:34:04 brianp Exp $
+$Id: README.BEOS,v 1.6 1999/11/27 01:40:40 brianp Exp $

docs/README.MINGW32

@@ -1,120 +1,50 @@
-August 30, 1998 -- Paul Garceau (pgarceau@teleport.com)
+August 30, 1998 -- Paul Garceau
+Updated January 13, 2000 -- Paul Garceau (pgarceau@teleport.com)
 
-DISCLAIMER:  I make this extension to the Mesa 3-D Graphics Library as a service
+DISCLAIMER:  I make this port of 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.
+build will work for your system.
+
+	The associated packages and batch files I have included as part of the GCC-2.95.2/Mingw32 extension are provided "As-is" with out any guarantee of support or functionality from this author.
 
 	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.
 
+	I recommend using GCC-2.95.2/Mingw32 which is available at Mumit Khans' ftp site:
 
-	EGCS-Mingw32 Beta 3.08 Archive Manifest:
-		mingw32.bat
-		src/makefile.nt4
-		src/wmesa.c
-		src-glu/makefile.nt4
+		(ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/mingw32/)
 
-###############
+	This build has been tested under WinNT4/SP6.  Win9x and WinNT5 remain untested by me.  I have not tested any of the demos included with Mesa3d.
 
-Greetings,
+	I recommend using the GCC-2.95.2/Mingw32.
 
-	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
+	ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/mingw32/gcc-2.95.2
 
 	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.
+and Colin Peters for making it possible for the Mingw32 toolchain to exist.  Also, thanks go out to Stephane Rehel for the work that was completed on the Cygwin build.
 
-Installing EGCS-Mingw32 Build Revisions:
+Installing GCC-2.95.2/Mingw32 Build:
 
-	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) Open the file archive (either tar.gz or .zip extensions)
 
-	a) Move the mingw32.zip file to the top level of the hard drive on your
-system.
+	b) Decide the directory you want to move the archived files to.
 
-	b) Copy all of the Beta 3.08 src/windows files to the src/ directory.
+	d) Extract the files from the archive.
+	
+	e) Edit the mingw32.bat file to accomodate your choice of directory structure.
 
-	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	
+		%mesaroot%:	This is your root directory (Mesa-3.3)
+		%mesasrc%:	This is the Mesa-3.3 src directory (Mesa-3.3\src)
+		%mesalib%:	This is where the build will put libGL.a and libGLU.a
 
 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.
+	Open your Command Prompt or MS-DOS prompt.
+	Go to your Mesa-3.3 'root' directory
 	At the command line type: mingw32
-		mingw32 is the .bat file that actually does the build.
+
+	That's all there is to it.
 
 	Enjoy!
 

docs/README.THREADS

@@ -1,45 +1,33 @@
 
-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:
+Thread safety was introduced in Mesa 2.6 by John Stone and
+Christoph Poliwoda.
+
+It was redesigned in Mesa 3.3 so that thread safety is
+supported by default (on systems which support threads,
+that is).  There is no measurable penalty on single
+threaded applications.
+
+NOTE that the only _driver_ which is thread safe at this time
+is the OS/Mesa driver!
+
+
+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:
+Support for other thread libraries can be added src/glthread.[ch]
 
-  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
+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).
 
@@ -50,17 +38,15 @@ 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.
+If you are interested in helping with thread safety work in Mesa
+join the Mesa developers mailing list and post your proposal.
 
-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
 
 
+Version info:
+   Mesa 2.6 - initial thread support.
+   Mesa 3.3 - thread support mostly rewritten (Brian Paul)

docs/README.X11

@@ -1,33 +1,54 @@
 
-                         Mesa 3.0 Unix/X11 Information
+                         Mesa 3.4 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.
+There are two ways to compile Mesa on Unix/X11 systems:
+
+1. The old way:
+    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.
+
+    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.
+
+
+2. The new way:
+    Type './configure' and then 'make'.  This uses GNU autoconfig.
+    See docs/INSTALL for more details.
+
 
 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/
+directories.  When finished, the Mesa libraries will be in the Mesa-3.3/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.
 
 
+Notes on assembly language optimizations:
+
+   When using the old-style Makefiles, you can specify a configuration
+   that uses X86 assembly language optimizations (linux-3dnow for example).
+
+   The detection of MMX, 3DNow!, PIII/SSE, etc capability is done at
+   runtime.  That means you can compile Mesa for 3DNow! optimizations
+   even if you don't have an AMD CPU.
+
+   However, your Linux binutils and assembler must understand the
+   special instructions in order to compile them.  If you have
+   compilation problems, try upgrading your binutils.
+
+
 Header and library files:
    After you've compiled Mesa and tried the demos I recommend the following
    procedure for "installing" Mesa.
@@ -120,7 +141,7 @@ Xt/Motif Widgets:
 
 Togl:
    Togl is an OpenGL/Mesa widget for Tcl/Tk.
-   See http://www.ssec.wisc.edu/~brianp/Togl.html for more information.
+   See http://togl.sourceforge.net for more information.
 
 
 
@@ -239,6 +260,7 @@ Extensions:
    The following OpenGL GLX extensions are currently implemented:
 
       GLX_EXT_visual_info - GLX visual and transparent pixel extension
+      GLX_EXT_visual_rating - GLX visual caveats
 
    For detailed information about the extensions see www.opengl.org
 
@@ -301,4 +323,4 @@ Summary of X-related environment variables:
 
 
 ----------------------------------------------------------------------
-$Id: README.X11,v 3.3 1999/09/15 16:39:01 brianp Exp $
+$Id: README.X11,v 3.5.4.1 2000/11/02 18:05:34 brianp Exp $

docs/RELNOTES-3.1

@@ -0,0 +1,146 @@
+
+                         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?
+
+
+
+----------------------------------------------------------------------
+$Id: RELNOTES-3.1,v 1.2 2000/04/07 17:08:06 brianp Exp $

docs/RELNOTES-3.2

@@ -0,0 +1,12 @@
+
+                         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.
+
+
+----------------------------------------------------------------------
+$Id: RELNOTES-3.2,v 1.2 2000/04/07 17:08:06 brianp Exp $

docs/RELNOTES-3.2.1

@@ -0,0 +1,32 @@
+
+                         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.
+
+
+
+----------------------------------------------------------------------
+$Id: RELNOTES-3.2.1,v 1.2 2000/07/21 16:32:33 brianp Exp $

docs/RELNOTES-3.3

@@ -0,0 +1,271 @@
+
+                         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.
+
+
+
+----------------------------------------------------------------------
+$Id: RELNOTES-3.3,v 1.8 2000/07/21 16:26:41 brianp Exp $

docs/RELNOTES-3.4

@@ -0,0 +1,22 @@
+
+                         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.
+
+
+----------------------------------------------------------------------
+$Id: RELNOTES-3.4,v 1.1.2.2 2000/11/02 18:05:34 brianp Exp $

docs/VERSIONS

@@ -1,4 +1,4 @@
-$Id: VERSIONS,v 1.13 1999/09/19 20:09:00 tanner Exp $
+$Id: VERSIONS,v 1.38.2.18 2000/11/03 02:39:00 brianp Exp $
 
 
 Mesa Version History
@@ -659,3 +659,119 @@ Mesa Version History
 	- New library numbering: libGL.so.1.2.310
 	- 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
+

include/GL/Makefile.am

@@ -29,6 +29,6 @@ endif
 EXTRA_DIST = fxmesa.h ggimesa.h osmesa.h svgamesa.h \
 	glx.h glx_mangle.h xmesa.h xmesa_x.h xmesa_xf86.h
 
-GLinclude_HEADERS = gl.h gl_mangle.h glu.h glu_mangle.h \
+GLinclude_HEADERS = gl.h glext.h gl_mangle.h glu.h glu_mangle.h \
 	$(INC_FX) $(INC_GGI) $(INC_OSMESA) $(INC_SVGA) $(INC_X11) $(INC_GLUT)
 

include/GL/amesa.h

@@ -1,10 +1,10 @@
-/* $Id: amesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: amesa.h,v 1.2 2000/02/09 19:03:28 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  * 
- * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2000  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"),
@@ -25,25 +25,17 @@
  */
 
 
-/*
- * $Log: amesa.h,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 1.1  1999/03/16 01:24:13  brianp
- * initial check-in
- *
- */
-
-
 /* Allegro (DJGPP) driver by Bernhard Tschirren (bernie-t@geocities.com) */
 
 
-
 #ifndef AMESA_H
 #define AMESA_H
 
 
+#define AMESA_MAJOR_VERSION 3
+#define AMESA_MINOR_VERSION 3
+
+
 typedef struct amesa_visual  *AMesaVisual;
 typedef struct amesa_buffer  *AMesaBuffer;
 typedef struct amesa_context *AMesaContext;

include/GL/fxmesa.h

@@ -1,8 +1,8 @@
-/* $Id: fxmesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: fxmesa.h,v 1.2 1999/11/24 18:44:53 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  * Copyright (C) 1995-1999  Brian Paul
  *
  * This library is free software; you can redistribute it and/or
@@ -21,23 +21,6 @@
  */
 
 
-/*
- * $Log: fxmesa.h,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.2  1999/01/03 02:46:31  brianp
- * now using GLAPI and GLAPIENTRY keywords (Ted Jump)
- *
- * Revision 3.1  1998/04/01 03:00:28  brianp
- * updated for v0.24 of 3Dfx/Glide driver
- *
- * Revision 3.0  1998/02/20 05:04:45  brianp
- * initial rev
- *
- */
-
-
 /*
  * FXMesa - 3Dfx Glide driver for Mesa.  Contributed by David Bucciarelli
  *
@@ -58,7 +41,7 @@ extern "C" {
 
 
 #define FXMESA_MAJOR_VERSION 3
-#define FXMESA_MINOR_VERSION 0
+#define FXMESA_MINOR_VERSION 3
 
 
 /*

include/GL/ggimesa.h

@@ -1,9 +1,9 @@
-/* $Id: ggimesa.h,v 1.2 1999/08/23 22:34:08 jtaylor Exp $ */
+/* $Id: ggimesa.h,v 1.3 2000/02/09 19:03:28 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
- * Copyright (C) 1995-1998  Brian Paul
+ * Version:  3.3
+ * Copyright (C) 1995-2000  Brian Paul
  * Copyright (C) 1998  Uwe Maurer
  *
  * This library is free software; you can redistribute it and/or
@@ -22,23 +22,14 @@
  */
 
 
-/*
- * $Log: ggimesa.h,v $
- * Revision 1.2  1999/08/23 22:34:08  jtaylor
- * Misc small cleanups
- *
- * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
- * Imported sources
- *
- * Revision 1.2  1998/09/29 01:46:40  brianp
- * applied Emmanuel Marty's patches for latest GGI
- *
- */
-
-
 #ifndef GGIMESA_H
 #define GGIMESA_H
 
+
+#define GGIMESA_MAJOR_VERSION 3
+#define GGIMESA_MINOR_VERSION 3
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif

include/GL/gl_mangle.h

@@ -1,8 +1,8 @@
-/* $Id: gl_mangle.h,v 1.3 1999/11/04 00:43:09 miklos Exp $ */
+/* $Id: gl_mangle.h,v 1.4 2000/01/04 08:07:09 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  * 
  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
  * 
@@ -396,6 +396,8 @@
 #define glTexSubImage3DEXT mglTexSubImage3DEXT
 #define glCopyTexSubImage3DEXT mglCopyTexSubImage3DEXT
 #define glColorTable mglColorTable
+#define glColorTableParameteriv mglColorTableParameteriv
+#define glColorTableParameterfv mglColorTableParameterfv
 #define glColorSubTable mglColorSubTable
 #define glGetColorTable mglGetColorTable
 #define glGetColorTableParameteriv mglGetColorTableParameteriv 

include/GL/glu.h

@@ -1,10 +1,9 @@
-/* $Id: glu.h,v 1.16 1999/11/11 03:21:43 kendallb Exp $ */
+/* $Id: glu.h,v 1.22.4.1 2000/10/26 15:32:46 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
  * Version:  3.3
- *
- * Copyright (C) 1995-1999  Brian Paul
+ * Copyright (C) 1995-2000  Brian Paul
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -36,10 +35,11 @@ extern "C" {
 #endif
 
 
-#include "GL/gl.h"
+#include <GL/gl.h>
+
 
 	/* to facilitate clean DLL building ... */
-#if !defined(OPENSTEP) && (defined(__WIN32__) || defined(__CYGWIN32__))
+#if !defined(OPENSTEP) && (defined(__WIN32__) || defined(__CYGWIN__))
 #	if defined(_MSC_VER) && defined(BUILD_GLU32) /* tag specify we're building mesa as a DLL */
 #		define GLUAPI __declspec(dllexport)
 #	elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
@@ -47,9 +47,19 @@ extern "C" {
 #	else /* for use with static link lib build of Win32 edition only */
 #		define GLUAPI extern
 #	endif /* _STATIC_MESA support */
+#	define GLCALLBACK __stdcall
+#	define GLCALLBACKP __stdcall *
 #else
 #	define GLUAPI extern
-#endif /* WIN32 / CYGWIN32 bracket */
+#	define GLCALLBACK
+#	define GLCALLBACKP *
+#endif /* WIN32 / CYGWIN bracket */
+
+/* compatability guard so we don't need to change client code */
+#if defined(_WIN32) && !defined(_WINDEF_) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP)
+#	define CALLBACK GLCALLBACK
+#endif
+
 
 #ifdef macintosh
 	#pragma enumsalwaysint on
@@ -72,7 +82,7 @@ extern "C" {
 
 
 #define GLU_VERSION_1_1			1
-#define GLU_VERSION_1_2			1
+
 
 
 #define GLU_TRUE			1
@@ -189,17 +199,22 @@ extern "C" {
 #define GLU_NURBS_ERROR36	100286   /* null control point reference */
 #define GLU_NURBS_ERROR37	100287   /* duplicate point on pwlcurve */
 
+/* GLU 1.3 and later */
+#define GLU_NURBS_MODE		100160
+
+
 /* Errors */
 #define GLU_INVALID_ENUM		100900
 #define GLU_INVALID_VALUE		100901
 #define GLU_OUT_OF_MEMORY		100902
 #define GLU_INCOMPATIBLE_GL_VERSION	100903
 
-/* New in GLU 1.1 */
+/* GLU 1.1 and later */
 #define GLU_VERSION			100800
 #define GLU_EXTENSIONS			100801
 
-/*** GLU 1.0 tessellation - obsolete! ***/
+
+/*** GLU 1.0 tessellation  ***/
 
 /* Contour types */
 #define GLU_CW				100120
@@ -216,20 +231,26 @@ extern "C" {
 #define GLU_EDGE_FLAG			GLU_TESS_EDGE_FLAG
 
 
-/*
- * These are the GLU 1.1 typedefs.  GLU 1.3 has different ones!
- */
+
 #if defined(__BEOS__)
     /* The BeOS does something funky and makes these typedefs in one
      * of its system headers.
      */
 #else
+
+#if defined GLU_VERSION_1_2
     typedef struct GLUquadric GLUquadricObj;
     typedef struct GLUnurbs GLUnurbsObj;
-
     /* FIXME: We need to implement the other 1.3 typedefs - GH */
     typedef struct GLUtesselator GLUtesselator;
     typedef GLUtesselator GLUtriangulatorObj;
+#else
+    /* GLU 1.1 and older */
+    typedef struct GLUquadric GLUquadricObj;
+    typedef struct GLUtriangulatorObj GLUtriangulatorObj;
+    typedef struct GLUnurbs GLUnurbsObj;
+#endif
+
 #endif
 
 
@@ -289,17 +310,17 @@ GLUAPI const GLubyte* GLAPIENTRY gluErrorString( GLenum errorCode );
  */
 
 GLUAPI GLint GLAPIENTRY gluScaleImage( GLenum format,
-                                       GLint widthin, GLint heightin,
+                                       GLsizei widthin, GLsizei heightin,
                                        GLenum typein, const void *datain,
-                                       GLint widthout, GLint heightout,
+                                       GLsizei widthout, GLsizei heightout,
                                        GLenum typeout, void *dataout );
 
 GLUAPI GLint GLAPIENTRY gluBuild1DMipmaps( GLenum target, GLint components,
-                                           GLint width, GLenum format,
+                                           GLsizei width, GLenum format,
                                            GLenum type, const void *data );
 
 GLUAPI GLint GLAPIENTRY gluBuild2DMipmaps( GLenum target, GLint components,
-                                           GLint width, GLint height,
+                                           GLsizei width, GLsizei height,
                                            GLenum format,
                                            GLenum type, const void *data );
 
@@ -338,14 +359,15 @@ GLUAPI void GLAPIENTRY gluCylinder( GLUquadricObj *qobj,
                                     GLint slices, GLint stacks );
 
 GLUAPI void GLAPIENTRY gluSphere( GLUquadricObj *qobj,
-                                  GLdouble radius, GLint slices,
-                                  GLint stacks );
+                                  GLdouble radius,
+                                  GLint slices, GLint stacks );
 
 GLUAPI void GLAPIENTRY gluDisk( GLUquadricObj *qobj,
                                 GLdouble innerRadius, GLdouble outerRadius,
                                 GLint slices, GLint loops );
 
-GLUAPI void GLAPIENTRY gluPartialDisk( GLUquadricObj *qobj, GLdouble innerRadius,
+GLUAPI void GLAPIENTRY gluPartialDisk( GLUquadricObj *qobj,
+                                       GLdouble innerRadius,
                                        GLdouble outerRadius, GLint slices,
                                        GLint loops, GLdouble startAngle,
                                        GLdouble sweepAngle );
@@ -399,8 +421,8 @@ GLUAPI void GLAPIENTRY gluBeginTrim( GLUnurbsObj *nobj );
 GLUAPI void GLAPIENTRY gluEndTrim( GLUnurbsObj *nobj );
 
 GLUAPI void GLAPIENTRY gluPwlCurve( GLUnurbsObj *nobj, GLint count,
-                                    GLfloat *array, GLint stride,
-                                    GLenum type );
+                                    GLfloat *array,
+                                    GLint stride, GLenum type );
 
 GLUAPI void GLAPIENTRY gluNurbsCallback( GLUnurbsObj *nobj, GLenum which,
                                          void (GLCALLBACK *fn)() );
@@ -413,6 +435,8 @@ GLUAPI void GLAPIENTRY gluNurbsCallback( GLUnurbsObj *nobj, GLenum which,
  *
  */
 
+#ifdef GLU_VERSION_1_2
+
 GLUAPI GLUtesselator* GLAPIENTRY gluNewTess( void );
 
 GLUAPI void GLAPIENTRY gluDeleteTess( GLUtesselator *tobj );
@@ -441,17 +465,26 @@ GLUAPI void GLAPIENTRY gluTessCallback( GLUtesselator *tobj, GLenum which,
 GLUAPI void GLAPIENTRY gluGetTessProperty( GLUtesselator *tobj, GLenum which,
 					   GLdouble *value );
 
-/*
- *
- * Obsolete 1.0 tessellation functions
- *
- */
+#else
 
-GLUAPI void GLAPIENTRY gluBeginPolygon( GLUtesselator *tobj );
+GLUAPI GLUtriangulatorObj* GLAPIENTRY gluNewTess( void );
 
-GLUAPI void GLAPIENTRY gluNextContour( GLUtesselator *tobj, GLenum type );
+GLUAPI void GLAPIENTRY gluTessCallback( GLUtriangulatorObj *tobj, GLenum which,
+                                        void (GLCALLBACK *fn)() );
+
+GLUAPI void GLAPIENTRY gluDeleteTess( GLUtriangulatorObj *tobj );
+
+GLUAPI void GLAPIENTRY gluBeginPolygon( GLUtriangulatorObj *tobj );
+
+GLUAPI void GLAPIENTRY gluEndPolygon( GLUtriangulatorObj *tobj );
+
+GLUAPI void GLAPIENTRY gluNextContour( GLUtriangulatorObj *tobj, GLenum type );
+
+GLUAPI void GLAPIENTRY gluTessVertex( GLUtriangulatorObj *tobj, GLdouble v[3],
+                                      void *data );
+
+#endif
 
-GLUAPI void GLAPIENTRY gluEndPolygon( GLUtesselator *tobj );
 
 
 
@@ -465,6 +498,21 @@ GLUAPI const GLubyte* GLAPIENTRY gluGetString( GLenum name );
 
 
 
+/*
+ *
+ * GLU 1.3 functions
+ *
+ */
+
+#ifdef GLU_VERSION_1_3
+
+GLUAPI GLboolean GLAPIENTRY
+gluCheckExtension( const char *extName, const GLubyte *extString );
+
+#endif
+
+
+
 #if defined(__BEOS__) || defined(__QUICKDRAW__)
 #pragma export off
 #endif

include/GL/glut.h

@@ -108,7 +108,7 @@ extern _CRTIMP void __cdecl exit(int);
    and redifinition of Windows system defs, also removes requirement of
    pretty much any standard windows header from this file */
 
-#if (_MSC_VER >= 800) || defined(_STDCALL_SUPPORTED)
+#if (_MSC_VER >= 800) || defined(_STDCALL_SUPPORTED) || defined(__CYGWIN32__)
 #	define GLUTAPIENTRY __stdcall
 #else
 #	define GLUTAPIENTRY
@@ -152,7 +152,7 @@ typedef unsigned long COLORREF;
 #		define wglUseFontOutlines  wglUseFontOutlinesA
 #	endif /* !UNICODE */
 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
-typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT
+typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 #  pragma warning( push )
 #  pragma warning( disable : 4273 ) /* 'function' : inconsistent DLL linkage. dllexport assumed. */
 #  define WGLAPI __declspec(dllimport)
@@ -183,7 +183,7 @@ WGLAPI int   GLAPIENTRY wglUseFontOutlinesA(HDC, unsigned long, unsigned long, u
 WGLAPI int   GLAPIENTRY wglUseFontOutlinesW(HDC, unsigned long, unsigned long, unsigned long, float,float, int, LPGLYPHMETRICSFLOAT);
 WGLAPI int   GLAPIENTRY SwapBuffers(HDC);
 WGLAPI int   GLAPIENTRY ChoosePixelFormat(HDC,const PIXELFORMATDESCRIPTOR *);
-WGLAPI int   GLAPIENTRY DescribePixelFormat(HDC,int,unsigned long,LPPIXELFORMATDESCRIPTOR);
+WGLAPI int   GLAPIENTRY DescribePixelFormat(HDC,int,unsigned int,LPPIXELFORMATDESCRIPTOR);
 WGLAPI int   GLAPIENTRY GetPixelFormat(HDC);
 WGLAPI int   GLAPIENTRY SetPixelFormat(HDC,int,const PIXELFORMATDESCRIPTOR *);
 #  undef WGLAPI
@@ -199,7 +199,7 @@ WGLAPI int   GLAPIENTRY SetPixelFormat(HDC,int,const PIXELFORMATDESCRIPTOR *);
 #  define GLUTCALLBACK
 #  define GLUTAPI extern
 /* Prototype exit for the non-Win32 case (see above). */
-extern void exit(int);
+/*extern void exit(int);  this screws up gcc -ansi -pedantic! */
 #endif
 
 
@@ -739,7 +739,6 @@ GLUTAPI int GLUTAPIENTRY glutGameModeGet(GLenum mode);
 
 #ifdef __cplusplus
 }
-
 #endif
 
 #if 0

include/GL/glx.h

@@ -1,10 +1,10 @@
-/* $Id: glx.h,v 1.6 1999/11/11 01:27:17 brianp Exp $ */
+/* $Id: glx.h,v 1.22 2000/06/23 17:39:18 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
  * Version:  3.3
  * 
- * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2000  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"),
@@ -25,17 +25,25 @@
  */
 
 
-
 #ifndef GLX_H
 #define GLX_H
 
 
+#ifdef __VMS
+# ifdef __cplusplus
+/* VMS Xlib.h gives problems with C++.
+ * this avoids a bunch of trivial warnings */
+#pragma message disable nosimpint
+#endif
+#endif
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
-#include "GL/gl.h"
-#ifdef MESA
-#include "GL/xmesa.h"
+#ifdef __VMS
+# ifdef __cplusplus
+#pragma message enable nosimpint
 #endif
+#endif
+#include "GL/gl.h"
 
 
 #if defined(USE_MGL_NAMESPACE)
@@ -49,6 +57,8 @@ extern "C" {
 
 
 #define GLX_VERSION_1_1		1
+#define GLX_VERSION_1_2		1
+#define GLX_VERSION_1_3		1
 
 #define GLX_EXTENSION_NAME   "GLX"
 
@@ -76,17 +86,6 @@ extern "C" {
 #define GLX_ACCUM_ALPHA_SIZE	17
 
 
-/* GLX_EXT_visual_info extension */
-#define GLX_X_VISUAL_TYPE_EXT		0x22
-#define GLX_TRANSPARENT_TYPE_EXT	0x23
-#define GLX_TRANSPARENT_INDEX_VALUE_EXT	0x24
-#define GLX_TRANSPARENT_RED_VALUE_EXT	0x25
-#define GLX_TRANSPARENT_GREEN_VALUE_EXT	0x26
-#define GLX_TRANSPARENT_BLUE_VALUE_EXT	0x27
-#define GLX_TRANSPARENT_ALPHA_VALUE_EXT	0x28
-
-
-
 /*
  * Error codes returned by glXGetConfig:
  */
@@ -108,42 +107,70 @@ extern "C" {
 
 
 /*
- * GLX_visual_info extension
+ * GLX 1.3 and later:
  */
-#define GLX_TRUE_COLOR_EXT		0x8002
-#define GLX_DIRECT_COLOR_EXT		0x8003
-#define GLX_PSEUDO_COLOR_EXT		0x8004
-#define GLX_STATIC_COLOR_EXT		0x8005
-#define GLX_GRAY_SCALE_EXT		0x8006
-#define GLX_STATIC_GRAY_EXT		0x8007
-#define GLX_NONE_EXT			0x8000
-#define GLX_TRANSPARENT_RGB_EXT		0x8008
-#define GLX_TRANSPARENT_INDEX_EXT	0x8009
-
-
-/*
- * Compile-time extension tests
- */
-#define GLX_EXT_visual_info		1
-#define GLX_EXT_get_proc_address	1
-#define GLX_MESA_pixmap_colormap	1
-#define GLX_MESA_release_buffers	1
-#define GLX_MESA_copy_sub_buffer	1
-#define GLX_MESA_set_3dfx_mode		1
-#define GLX_SGI_video_sync		1
+#define GLX_CONFIG_CAVEAT		0x20
+#define GLX_DONT_CARE			0xFFFFFFFF
+#define GLX_SLOW_CONFIG			0x8001
+#define GLX_NON_CONFORMANT_CONFIG	0x800D
+#define GLX_X_VISUAL_TYPE		0x22
+#define GLX_TRANSPARENT_TYPE		0x23
+#define GLX_TRANSPARENT_INDEX_VALUE	0x24
+#define GLX_TRANSPARENT_RED_VALUE	0x25
+#define GLX_TRANSPARENT_GREEN_VALUE	0x26
+#define GLX_TRANSPARENT_BLUE_VALUE	0x27
+#define GLX_TRANSPARENT_ALPHA_VALUE	0x28
+#define GLX_MAX_PBUFFER_WIDTH		0x8016
+#define GLX_MAX_PBUFFER_HEIGHT		0x8017
+#define GLX_MAX_PBUFFER_PIXELS		0x8018
+#define GLX_PRESERVED_CONTENTS		0x801B
+#define GLX_LARGEST_BUFFER		0x801C
+#define GLX_DRAWABLE_TYPE		0x8010
+#define GLX_FBCONFIG_ID			0x8013
+#define GLX_VISUAL_ID			0x800B
+#define GLX_WINDOW_BIT			0x00000001
+#define GLX_PIXMAP_BIT			0x00000002
+#define GLX_PBUFFER_BIT			0x00000004
+#define GLX_AUX_BUFFERS_BIT		0x00000010
+#define GLX_FRONT_LEFT_BUFFER_BIT	0x00000001
+#define GLX_FRONT_RIGHT_BUFFER_BIT	0x00000002
+#define GLX_BACK_LEFT_BUFFER_BIT	0x00000004
+#define GLX_BACK_RIGHT_BUFFER_BIT	0x00000008
+#define GLX_AUX_BUFFERS_BIT		0x00000010
+#define GLX_DEPTH_BUFFER_BIT		0x00000020
+#define GLX_STENCIL_BUFFER_BIT		0x00000040
+#define GLX_ACCUM_BUFFER_BIT		0x00000080
+#define GLX_DRAWABLE_TYPE		0x8010
+#define GLX_RENDER_TYPE			0x8011
+#define GLX_X_RENDERABLE		0x8012
+#define GLX_NONE			0x8000
+#define GLX_TRUE_COLOR			0x8002
+#define GLX_DIRECT_COLOR		0x8003
+#define GLX_PSEUDO_COLOR		0x8004
+#define GLX_STATIC_COLOR		0x8005
+#define GLX_GRAY_SCALE			0x8006
+#define GLX_STATIC_GRAY			0x8007
+#define GLX_TRANSPARENT_INDEX		0x8009
+#define GLX_COLOR_INDEX_TYPE		0x8015
+#define GLX_COLOR_INDEX_BIT		0x00000002
+#define GLX_SCREEN			0x800C
+#define GLX_PBUFFER_CLOBBER_MASK	0x08000000
+#define GLX_DAMAGED			0x8020
+#define GLX_SAVED			0x8021
+#define GLX_WINDOW			0x8022
+#define GLX_PBUFFER			0x8033
 
 
 
-#ifdef MESA
-   typedef XMesaContext GLXContext;
-   typedef Pixmap GLXPixmap;
-   typedef Drawable GLXDrawable;
-#else
-   typedef void * GLXContext;
-   typedef XID GLXPixmap;
-   typedef XID GLXDrawable;
-#endif
+typedef void * GLXContext;
+typedef XID GLXPixmap;
+typedef XID GLXDrawable;
+/* GLX 1.3 and later */
+typedef void * GLXFBConfig;
+typedef XID GLXFBConfigID;
 typedef XID GLXContextID;
+typedef XID GLXWindow;
+typedef XID GLXPbuffer;
 
 
 
@@ -159,7 +186,7 @@ extern Bool glXMakeCurrent( Display *dpy, GLXDrawable drawable,
 			    GLXContext ctx);
 
 extern void glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
-			    GLuint mask );
+			    unsigned long mask );
 
 extern void glXSwapBuffers( Display *dpy, GLXDrawable drawable );
 
@@ -197,29 +224,214 @@ extern const char *glXQueryServerString( Display *dpy, int screen, int name );
 extern const char *glXGetClientString( Display *dpy, int name );
 
 
-
-/* GLX_MESA_pixmap_colormap */
-extern GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
-                                         Pixmap pixmap, Colormap cmap );
+/* GLX 1.2 and later */
+extern Display *glXGetCurrentDisplay( void );
 
 
-/* GLX_MESA_release_buffers */
-extern Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+/* GLX 1.3 and later */
+extern GLXFBConfig *glXChooseFBConfig( Display *dpy, int screen,
+                                       const int *attribList, int *nitems );
+
+extern int glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
+                                 int attribute, int *value );
+
+extern GLXFBConfig *glXGetFBConfigs( Display *dpy, int screen,
+                                     int *nelements );
+
+extern XVisualInfo *glXGetVisualFromFBConfig( Display *dpy,
+                                              GLXFBConfig config );
+
+extern GLXWindow glXCreateWindow( Display *dpy, GLXFBConfig config,
+                                  Window win, const int *attribList );
+
+extern void glXDestroyWindow( Display *dpy, GLXWindow window );
+
+extern GLXPixmap glXCreatePixmap( Display *dpy, GLXFBConfig config,
+                                  Pixmap pixmap, const int *attribList );
+
+extern void glXDestroyPixmap( Display *dpy, GLXPixmap pixmap );
+
+extern GLXPbuffer glXCreatePbuffer( Display *dpy, GLXFBConfig config,
+                                    const int *attribList );
+
+extern void glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf );
+
+extern void glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
+                              unsigned int *value );
+
+extern GLXContext glXCreateNewContext( Display *dpy, GLXFBConfig config,
+                                       int renderType, GLXContext shareList,
+                                       Bool direct );
+
+extern Bool glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
+                                   GLXDrawable read, GLXContext ctx );
+
+extern GLXDrawable glXGetCurrentReadDrawable( void );
+
+extern int glXQueryContext( Display *dpy, GLXContext ctx, int attribute,
+                            int *value );
+
+extern void glXSelectEvent( Display *dpy, GLXDrawable drawable,
+                            unsigned long mask );
+
+extern void glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
+                                 unsigned long *mask );
 
 
-/* GLX_MESA_copy_sub_buffer */
+
+/*#ifndef GLX_GLXEXT_LEGACY*/
+
+/*#include <GL/glxext.h>*/
+
+/*#else*/
+
+
+/*
+ * 28. GLX_EXT_visual_info extension
+ */
+#ifndef GLX_EXT_visual_info
+#define GLX_EXT_visual_info		1
+
+#define GLX_X_VISUAL_TYPE_EXT		0x22
+#define GLX_TRANSPARENT_TYPE_EXT	0x23
+#define GLX_TRANSPARENT_INDEX_VALUE_EXT	0x24
+#define GLX_TRANSPARENT_RED_VALUE_EXT	0x25
+#define GLX_TRANSPARENT_GREEN_VALUE_EXT	0x26
+#define GLX_TRANSPARENT_BLUE_VALUE_EXT	0x27
+#define GLX_TRANSPARENT_ALPHA_VALUE_EXT	0x28
+#define GLX_TRUE_COLOR_EXT		0x8002
+#define GLX_DIRECT_COLOR_EXT		0x8003
+#define GLX_PSEUDO_COLOR_EXT		0x8004
+#define GLX_STATIC_COLOR_EXT		0x8005
+#define GLX_GRAY_SCALE_EXT		0x8006
+#define GLX_STATIC_GRAY_EXT		0x8007
+#define GLX_NONE_EXT			0x8000
+#define GLX_TRANSPARENT_RGB_EXT		0x8008
+#define GLX_TRANSPARENT_INDEX_EXT	0x8009
+
+#endif /* 28. GLX_EXT_visual_info extension */
+
+
+
+/*
+ * 41. GLX_SGI_video_sync
+ */
+#ifndef GLX_SGI_video_sync
+#define GLX_SGI_video_sync 1
+
+extern int glXGetVideoSyncSGI(unsigned int *count);
+extern int glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count);
+
+#endif /* GLX_SGI_video_sync */
+
+
+
+/*
+ * 42. GLX_EXT_visual_rating
+ */
+#ifndef GLX_EXT_visual_rating
+#define GLX_EXT_visual_rating		1
+
+#define GLX_VISUAL_CAVEAT_EXT		0x20
+/*#define GLX_NONE_EXT			0x8000*/
+#define GLX_SLOW_VISUAL_EXT		0x8001
+#define GLX_NON_CONFORMANT_VISUAL_EXT	0x800D
+
+#endif /* GLX_EXT_visual_rating	*/
+
+
+
+/*
+ * 47. GLX_EXT_import_context
+ */
+#ifndef GLX_EXT_import_context
+#define GLX_EXT_import_context 1
+
+#define GLX_SHARE_CONTEXT_EXT		0x800A
+#define GLX_VISUAL_ID_EXT		0x800B
+#define GLX_SCREEN_EXT			0x800C
+
+extern void glXFreeContextEXT(Display *dpy, GLXContext context);
+
+extern GLXContextID glXGetContextIDEXT(const GLXContext context);
+
+extern Display *glXGetCurrentDisplayEXT(void);
+
+extern GLXContext glXImportContextEXT(Display *dpy, GLXContextID contextID);
+
+extern int glXQueryContextInfoEXT(Display *dpy, GLXContext context,
+                                  int attribute,int *value);
+
+#endif /* GLX_EXT_import_context */
+
+
+
+/*
+ * 215. GLX_MESA_copy_sub_buffer
+ */
+#ifndef GLX_MESA_copy_sub_buffer
+#define GLX_MESA_copy_sub_buffer 1
+
 extern void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
                                   int x, int y, int width, int height );
 
+#endif
+
+
+
+/*
+ * 216. GLX_MESA_pixmap_colormap
+ */
+#ifndef GLX_MESA_pixmap_colormap
+#define GLX_MESA_pixmap_colormap 1
+
+extern GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+                                         Pixmap pixmap, Colormap cmap );
+
+#endif /* GLX_MESA_pixmap_colormap */
+
+
+
+/*
+ * 217. GLX_MESA_release_buffers
+ */
+#ifndef GLX_MESA_release_buffers
+#define GLX_MESA_release_buffers 1
+
+extern Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+
+#endif /* GLX_MESA_release_buffers */
+
+
+
+/*
+ * 218. GLX_MESA_set_3dfx_mode
+ */
+#ifndef GLX_MESA_set_3dfx_mode
+#define GLX_MESA_set_3dfx_mode 1
+
+#define GLX_3DFX_WINDOW_MODE_MESA       0x1
+#define GLX_3DFX_FULLSCREEN_MODE_MESA   0x2
 
-/* GLX_MESA_set_3dfx_mode */
 extern GLboolean glXSet3DfxModeMESA( GLint mode );
 
+#endif /* GLX_MESA_set_3dfx_mode */
 
-/* GLX_SGI_video_sync */
-extern int glXGetVideoSyncSGI(unsigned int *count);
-extern int glXWaitVideoSyncSGI(int divisor, int remainder,
-                               unsigned int *count);
+
+
+/*
+ * ARB 2. GLX_ARB_get_proc_address
+ */
+#ifndef GLX_ARB_get_proc_address
+#define GLX_ARB_get_proc_address 1
+
+extern void (*glXGetProcAddressARB(const GLubyte *procName))();
+
+#endif /* GLX_ARB_get_proc_address */
+
+
+
+/*#endif*/ /* GLX_GLXEXT_LEGACY */
 
 
 

include/GL/mesa_wgl.h

@@ -1,11 +1,81 @@
+/* $Id: mesa_wgl.h,v 1.5 2000/05/22 16:21:27 brianp 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.
+ */
+
+
 /* prototypes for the Mesa WGL functions */
 /* relocated here so that I could make GLUT get them properly */
 
-#ifndef GL_H
-#   include <gl/gl.h>
+#ifndef _mesa_wgl_h_
+#define _mesa_wgl_h_
+
+
+#include <gl/gl.h>
+
+#ifdef __cplusplus
+extern "C" {
 #endif
 
+
+#if !defined(OPENSTEP) && (defined(__WIN32__) || defined(__CYGWIN32__))
+#  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
+#    define GLAPI __declspec(dllexport)
+#    define WGLAPI __declspec(dllexport)
+#  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
+#    define GLAPI __declspec(dllimport)
+#    define WGLAPI __declspec(dllimport)
+#  else /* for use with static link lib build of Win32 edition only */
+#    define GLAPI extern
+#    define WGLAPI __declspec(dllimport)
+#  endif /* _STATIC_MESA support */
+#  define GLAPIENTRY __stdcall
+#else
+/* non-Windows compilation */
+#  define GLAPI extern
+#  define GLAPIENTRY
+#endif /* WIN32 / CYGWIN32 bracket */
+
+
+#if defined(_WIN32) && !defined(_WINGDI_) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP)
+#ifndef _GNU_H_WINDOWS32_FUNCTIONS
+#	ifdef UNICODE
+#		define wglUseFontBitmaps  wglUseFontBitmapsW
+#		define wglUseFontOutlines  wglUseFontOutlinesW
+#	else
+#		define wglUseFontBitmaps  wglUseFontBitmapsA
+#		define wglUseFontOutlines  wglUseFontOutlinesA
+#	endif /* !UNICODE */
+#endif /* _GNU_H_WINDOWS32_FUNCTIONS */
+typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
+typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
+typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
+#endif
+
+
 #ifdef _MSC_VER
+#  pragma warning( disable : 4615 ) /* pragma warning : unknown user warning type*/
 #  pragma warning( push )
 #  pragma warning( disable : 4273 ) /* 'function' : inconsistent DLL linkage. dllexport assumed. */
 #endif
@@ -37,10 +107,17 @@ WGLAPI int   GLAPIENTRY wglUseFontOutlinesA(HDC, unsigned long, unsigned long, u
 WGLAPI int   GLAPIENTRY wglUseFontOutlinesW(HDC, unsigned long, unsigned long, unsigned long, float,float, int, LPGLYPHMETRICSFLOAT);
 WGLAPI int   GLAPIENTRY SwapBuffers(HDC);
 WGLAPI int   GLAPIENTRY ChoosePixelFormat(HDC,const PIXELFORMATDESCRIPTOR *);
-WGLAPI int   GLAPIENTRY DescribePixelFormat(HDC,int,unsigned int,PIXELFORMATDESCRIPTOR *);
+WGLAPI int   GLAPIENTRY DescribePixelFormat(HDC,int,unsigned int,LPPIXELFORMATDESCRIPTOR);
 WGLAPI int   GLAPIENTRY GetPixelFormat(HDC);
 WGLAPI int   GLAPIENTRY SetPixelFormat(HDC,int,const PIXELFORMATDESCRIPTOR *);
 
 #ifdef _MSC_VER
 #  pragma warning( pop )
 #endif
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _mesa_wgl_h_ */

include/GL/osmesa.h

@@ -1,10 +1,10 @@
-/* $Id: osmesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: osmesa.h,v 1.5 2000/03/28 16:59:39 rjfrank Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  * 
- * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2000  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"),
@@ -25,26 +25,6 @@
  */
 
 
-/*
- * $Log: osmesa.h,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 1.4  1999/02/14 03:39:09  brianp
- * new copyright
- *
- * Revision 1.3  1999/01/03 02:52:30  brianp
- * now using GLAPI and GLAPIENTRY keywords (Ted Jump)
- *
- * Revision 1.2  1998/07/26 01:33:51  brianp
- * added WINGDIAPI and APIENTRY keywords per Ted Jump
- *
- * Revision 1.1  1998/02/13 03:17:50  brianp
- * Initial revision
- *
- */
-
-
 /*
  * Mesa Off-Screen rendering interface.
  *
@@ -70,12 +50,10 @@
  */
 
 
-
 #ifndef OSMESA_H
 #define OSMESA_H
 
 
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -84,9 +62,8 @@ extern "C" {
 #include "GL/gl.h"
 
 
-
 #define OSMESA_MAJOR_VERSION 3
-#define OSMESA_MINOR_VERSION 0
+#define OSMESA_MINOR_VERSION 3
 
 
 
@@ -119,7 +96,6 @@ extern "C" {
 #define OSMESA_TYPE		0x23
 
 
-
 typedef struct osmesa_context *OSMesaContext;
 
 
@@ -139,7 +115,7 @@ typedef struct osmesa_context *OSMesaContext;
  * Return:  an OSMesaContext or 0 if error
  */
 GLAPI OSMesaContext GLAPIENTRY OSMesaCreateContext( GLenum format,
-                                          OSMesaContext sharelist );
+                                                    OSMesaContext sharelist );
 
 
 
@@ -181,8 +157,8 @@ GLAPI void GLAPIENTRY OSMesaDestroyContext( OSMesaContext ctx );
  *          width>internal limit or height>internal limit.
  */
 GLAPI GLboolean GLAPIENTRY OSMesaMakeCurrent( OSMesaContext ctx,
-                                    void *buffer, GLenum type,
-                                    GLsizei width, GLsizei height );
+                                              void *buffer, GLenum type,
+                                              GLsizei width, GLsizei height );
 
 
 
@@ -212,7 +188,7 @@ GLAPI void GLAPIENTRY OSMesaPixelStore( GLint pname, GLint value );
 
 
 /*
- * Return context info.  This is like glGetIntegerv.
+ * Return an integer value like glGetIntegerv.
  * Input:  pname -
  *                 OSMESA_WIDTH  return current image width
  *                 OSMESA_HEIGHT  return current image height
@@ -237,10 +213,25 @@ GLAPI void GLAPIENTRY OSMesaGetIntegerv( GLint pname, GLint *value );
  * New in Mesa 2.4.
  */
 GLAPI GLboolean GLAPIENTRY OSMesaGetDepthBuffer( OSMesaContext c,
-                                       GLint *width, GLint *height,
-                                       GLint *bytesPerValue, void **buffer );
+                                                 GLint *width, GLint *height,
+                                                 GLint *bytesPerValue,
+                                                 void **buffer );
 
 
+/*
+ * Return the color buffer associated with an OSMesa context.
+ * Input:  c - the OSMesa context
+ * Output:  width, height - size of buffer in pixels
+ *          format - buffer format (OSMESA_FORMAT)
+ *          buffer - pointer to depth buffer values
+ * Return:  GL_TRUE or GL_FALSE to indicate success or failure.
+ *
+ * New in Mesa 3.3.
+ */
+GLAPI GLboolean GLAPIENTRY OSMesaGetColorBuffer( OSMesaContext c,
+                                                 GLint *width, GLint *height,
+                                                 GLint *format,
+                                                 void **buffer );
 
 
 #if defined(__BEOS__) || defined(__QUICKDRAW__)

include/GL/svgamesa.h

@@ -1,9 +1,9 @@
-/* $Id: svgamesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: svgamesa.h,v 1.4 2000/02/09 19:03:28 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.0
- * Copyright (C) 1995-1998  Brian Paul
+ * Version:  3.3
+ * Copyright (C) 1995-2000  Brian Paul
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -21,18 +21,6 @@
  */
 
 
-/*
- * $Log: svgamesa.h,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.0  1998/02/20 05:07:24  brianp
- * initial rev
- *
- */
-
-
-
 /*
  * SVGA/Mesa interface for Linux.
  */
@@ -65,7 +53,7 @@
 
 
 #define SVGAMESA_MAJOR_VERSION 3
-#define SVGAMESA_MINOR_VERSION 0
+#define SVGAMESA_MINOR_VERSION 3
 
 
 #ifdef __cplusplus
@@ -87,16 +75,21 @@ typedef struct svgamesa_context *SVGAMesaContext;
 /*
  * doubleBuffer flag new in version 2.4
  */
+extern int SVGAMesaInit( int GraphMode );
+
+extern int SVGAMesaClose( void );
+
 extern SVGAMesaContext SVGAMesaCreateContext( GLboolean doubleBuffer );
 
 extern void SVGAMesaDestroyContext( SVGAMesaContext ctx );
 
 extern void SVGAMesaMakeCurrent( SVGAMesaContext ctx );
 
-extern SVGAMesaContext SVGAMesaGetCurrentContext( void );
-
 extern void SVGAMesaSwapBuffers( void );
 
+extern void SVGAMesaSetCI(int ndx, GLubyte red, GLubyte green, GLubyte blue);
+
+extern SVGAMesaContext SVGAMesaGetCurrentContext( void );
 
 #ifdef __cplusplus
 }

include/GL/xmesa.h

@@ -1,10 +1,10 @@
-/* $Id: xmesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: xmesa.h,v 1.8.4.1 2000/11/02 18:08:28 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.1
+ * Version:  3.3
  * 
- * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2000  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"),
@@ -25,23 +25,6 @@
  */
 
 
-/*
- * $Log: xmesa.h,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 1.3  1999/02/24 22:43:27  jens
- * Name changes to get XMesa to compile standalone inside XFree86
- *
- * Revision 1.2  1999/02/14 03:39:09  brianp
- * new copyright
- *
- * Revision 1.1  1998/02/13 03:17:32  brianp
- * Initial revision
- *
- */
-
-
 /*
  * Mesa/X11 interface.  This header file serves as the documentation for
  * the Mesa/X11 interface functions.
@@ -106,7 +89,7 @@ extern struct Library *XLibBase;
 
 
 #define XMESA_MAJOR_VERSION 3
-#define XMESA_MINOR_VERSION 0
+#define XMESA_MINOR_VERSION 4
 
 
 
@@ -133,7 +116,6 @@ typedef struct xmesa_buffer *XMesaBuffer;
 
 
 
-
 /*
  * Create a new X/Mesa visual.
  * Input:  display - X11 display
@@ -144,24 +126,35 @@ typedef struct xmesa_buffer *XMesaBuffer;
  *         db_flag - GL_TRUE = double-buffered,
  *                   GL_FALSE = single buffered
  *         stereo_flag - stereo visual?
- *         depth_size - requested bits/depth values, or zero
- *         stencil_size - requested bits/stencil values, or zero
- *         accum_size - requested bits/component values, or zero
  *         ximage_flag - GL_TRUE = use an XImage for back buffer,
  *                       GL_FALSE = use an off-screen pixmap for back buffer
+ *         depth_size - requested bits/depth values, or zero
+ *         stencil_size - requested bits/stencil values, or zero
+ *         accum_red_size - requested bits/red accum values, or zero
+ *         accum_green_size - requested bits/green accum values, or zero
+ *         accum_blue_size - requested bits/blue accum values, or zero
+ *         accum_alpha_size - requested bits/alpha accum values, or zero
+ *         num_samples - number of samples/pixel if multisampling, or zero
+ *         level - visual level, usually 0
+ *         visualCaveat - ala the GLX extension, usually GLX_NONE_EXT
  * Return;  a new XMesaVisual or 0 if error.
  */
 extern XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
-				      XMesaVisualInfo visinfo,
-				      GLboolean rgb_flag,
-				      GLboolean alpha_flag,
-				      GLboolean db_flag,
-				      GLboolean stereo_flag,
-				      GLboolean ximage_flag,
-				      GLint depth_size,
-				      GLint stencil_size,
-				      GLint accum_size,
-				      GLint level );
+                                      XMesaVisualInfo visinfo,
+                                      GLboolean rgb_flag,
+                                      GLboolean alpha_flag,
+                                      GLboolean db_flag,
+                                      GLboolean stereo_flag,
+                                      GLboolean ximage_flag,
+                                      GLint depth_size,
+                                      GLint stencil_size,
+                                      GLint accum_red_size,
+                                      GLint accum_green_size,
+                                      GLint accum_blue_size,
+                                      GLint accum_alpha_size,
+                                      GLint num_samples,
+                                      GLint level,
+                                      GLint visualCaveat );
 
 /*
  * Destroy an XMesaVisual, but not the associated XVisualInfo.
@@ -191,8 +184,7 @@ extern void XMesaDestroyContext( XMesaContext c );
 /*
  * Create an XMesaBuffer from an X window.
  */
-extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v,
-					    XMesaWindow w );
+extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, XMesaWindow w );
 
 
 /*
@@ -226,6 +218,22 @@ extern GLboolean XMesaMakeCurrent( XMesaContext c,
 				   XMesaBuffer b );
 
 
+/*
+ * Bind two buffers (read and draw) to a context and make the
+ * context the current one.
+ * New in Mesa 3.3
+ */
+extern GLboolean XMesaMakeCurrent2( XMesaContext c,
+                                    XMesaBuffer drawBuffer,
+                                    XMesaBuffer readBuffer );
+
+
+/*
+ * Unbind the current context from its buffer.
+ */
+extern GLboolean XMesaUnbindContext( XMesaContext c );
+
+
 /*
  * Return a handle to the current context.
  */
@@ -233,11 +241,18 @@ extern XMesaContext XMesaGetCurrentContext( void );
 
 
 /*
- * Return handle to the current buffer.
+ * Return handle to the current (draw) buffer.
  */
 extern XMesaBuffer XMesaGetCurrentBuffer( void );
 
 
+/*
+ * Return handle to the current read buffer.
+ * New in Mesa 3.3
+ */
+extern XMesaBuffer XMesaGetCurrentReadBuffer( void );
+
+
 /*
  * Swap the front and back buffers for the given buffer.  No action is
  * taken if the buffer is not double buffered.

include/GL/xmesa_x.h

@@ -30,7 +30,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  * Authors:
  *   Kevin E. Martin <kevin@precisioninsight.com>
  *
- * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/include/GL/xmesa_x.h,v 1.1 1999/08/19 00:55:40 jtg Exp $
+ * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/include/GL/xmesa_x.h,v 1.2 2000/02/25 20:31:11 brianp Exp $
  */
 
 #ifndef _XMESA_X_H_
@@ -78,7 +78,6 @@ typedef XColor       XMesaColor;
 #define GET_REDMASK(__v)        __v->visinfo->red_mask
 #define GET_GREENMASK(__v)      __v->visinfo->green_mask
 #define GET_BLUEMASK(__v)       __v->visinfo->blue_mask
-#define GET_BITS_PER_PIXEL(__v) bits_per_pixel(__v->display, __v->visinfo)
 #if defined(__cplusplus) || defined(c_plusplus)
 #define GET_VISUAL_CLASS(__v)   __v->visinfo->c_class
 #else

include/GL/xmesa_xf86.h

@@ -30,7 +30,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  * Authors:
  *   Kevin E. Martin <kevin@precisioninsight.com>
  *
- * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/include/GL/xmesa_xf86.h,v 1.1 1999/08/19 00:55:40 jtg Exp $
+ * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/include/GL/xmesa_xf86.h,v 1.5 2000/04/05 22:09:10 brianp Exp $
  */
 
 #ifndef _XMESA_XF86_H_
@@ -52,29 +52,29 @@ typedef DDXPointRec XMesaPoint;
 typedef xColorItem  XMesaColor;
 
 #define XMesaSetGeneric(__d,__gc,__val,__mask) \
-{ \
+do { \
     CARD32 __v[1]; \
     (void) __d; \
     __v[0] = __val; \
     dixChangeGC(NullClient, __gc, __mask, __v, NULL); \
-}
+} while (0)
 
 #define XMesaSetGenericPtr(__d,__gc,__pval,__mask) \
-{ \
+do { \
     ChangeGCVal __v[1]; \
     (void) __d; \
     __v[0].ptr = __pval; \
     dixChangeGC(NullClient, __gc, __mask, NULL, __v); \
-}
+} while (0)
 
 #define XMesaSetDashes(__d,__gc,__do,__dl,__n) \
-{ \
+do { \
     (void) __d; \
     SetDashes(__gc, __do, __n, (unsigned char *)__dl); \
-}
+} while (0)
 
 #define XMesaSetLineAttributes(__d,__gc,__lw,__ls,__cs,__js) \
-{ \
+do { \
     CARD32 __v[4]; \
     (void) __d; \
     __v[0] = __lw; \
@@ -84,7 +84,7 @@ typedef xColorItem  XMesaColor;
     dixChangeGC(NullClient, __gc, \
 		GCLineWidth|GCLineStyle|GCCapStyle|GCJoinStyle, \
 		__v, NULL); \
-}
+} while (0)
 
 #define XMesaSetForeground(d,gc,v) XMesaSetGeneric(d,gc,v,GCForeground)
 #define XMesaSetBackground(d,gc,v) XMesaSetGeneric(d,gc,v,GCBackground)
@@ -96,24 +96,24 @@ typedef xColorItem  XMesaColor;
 #define XMesaSetStipple(d,gc,v)    XMesaSetGenericPtr(d,gc,v,GCStipple)
 
 #define XMesaDrawPoint(__d,__b,__gc,__x,__y) \
-{ \
+do { \
     XMesaPoint __p[1]; \
     (void) __d; \
     __p[0].x = __x; \
     __p[0].y = __y; \
     ValidateGC(__b, __gc); \
     (*gc->ops->PolyPoint)(__b, __gc, CoordModeOrigin, 1, __p); \
-}
+} while (0)
 
 #define XMesaDrawPoints(__d,__b,__gc,__p,__n,__m) \
-{ \
+do { \
     (void) __d; \
     ValidateGC(__b, __gc); \
     (*gc->ops->PolyPoint)(__b, __gc, __m, __n, __p); \
-}
+} while (0)
 
 #define XMesaDrawLine(__d,__b,__gc,__x0,__y0,__x1,__y1) \
-{ \
+do { \
     XMesaPoint __p[2]; \
     (void) __d; \
     ValidateGC(__b, __gc); \
@@ -122,22 +122,22 @@ typedef xColorItem  XMesaColor;
     __p[1].x = __x1; \
     __p[1].y = __y1; \
     (*__gc->ops->Polylines)(__b, __gc, CoordModeOrigin, 2, __p); \
-}
+} while (0)
 
 #define XMesaFillRectangle(__d,__b,__gc,__x,__y,__w,__h) \
-{ \
+do { \
     xRectangle __r[1]; \
     (void) __d; \
-    ValidateGC(__b, __gc); \
+    ValidateGC((DrawablePtr)__b, __gc); \
     __r[0].x = __x; \
     __r[0].y = __y; \
     __r[0].width = __w; \
     __r[0].height = __h; \
-    (*__gc->ops->PolyFillRect)(__b, __gc, 1, __r); \
-}
+    (*__gc->ops->PolyFillRect)((DrawablePtr)__b, __gc, 1, __r); \
+} while (0)
 
 #define XMesaPutImage(__d,__b,__gc,__i,__sx,__sy,__x,__y,__w,__h) \
-{ \
+do { \
     /* Assumes: Images are always in ZPixmap format */ \
     (void) __d; \
     if (__sx || __sy) /* The non-trivial case */ \
@@ -146,22 +146,22 @@ typedef xColorItem  XMesaColor;
     (*__gc->ops->PutImage)(__b, __gc, ((XMesaDrawable)(__b))->depth, \
 			   __x, __y, __w, __h, 0, ZPixmap, \
 			   ((XMesaImage *)(__i))->data); \
-}
+} while (0)
 
 #define XMesaCopyArea(__d,__sb,__db,__gc,__sx,__sy,__w,__h,__x,__y) \
-{ \
+do { \
     (void) __d; \
     ValidateGC(__db, __gc); \
     (*__gc->ops->CopyArea)((DrawablePtr)__sb, __db, __gc, \
 			   __sx, __sy, __w, __h, __x, __y); \
-}
+} while (0)
 
 #define XMesaFillPolygon(__d,__b,__gc,__p,__n,__s,__m) \
-{ \
+do { \
     (void) __d; \
     ValidateGC(__b, __gc); \
     (*__gc->ops->FillPolygon)(__b, __gc, __s, __m, __n, __p); \
-}
+} while (0)
 
 /* CreatePixmap returns a PixmapPtr; so, it cannot be inside braces */
 #define XMesaCreatePixmap(__d,__b,__w,__h,__depth) \
@@ -170,16 +170,15 @@ typedef xColorItem  XMesaColor;
     (*__d->DestroyPixmap)(__b)
 
 #define XMesaFreeGC(__d,__gc) \
-{ \
+do { \
     (void) __d; \
     FreeScratchGC(__gc); \
-}
+} while (0)
 
 #define GET_COLORMAP_SIZE(__v)  __v->visinfo->ColormapEntries
 #define GET_REDMASK(__v)        __v->visinfo->redMask
 #define GET_GREENMASK(__v)      __v->visinfo->greenMask
 #define GET_BLUEMASK(__v)       __v->visinfo->blueMask
-#define GET_BITS_PER_PIXEL(__v) __v->visinfo->bitsPerRGBValue
 #define GET_VISUAL_CLASS(__v)   __v->visinfo->class
 #define GET_VISUAL_DEPTH(__v)   __v->visinfo->nplanes
 #define GET_BLACK_PIXEL(__v)    __v->display->blackPixel

progs/demos/Makefile.BeOS-R4

@@ -1,8 +1,8 @@
-# $Id: Makefile.BeOS-R4,v 1.3 1999/10/22 20:36:38 brianp Exp $
+# $Id: Makefile.BeOS-R4,v 1.12 2000/06/27 16:54:18 brianp Exp $
 
 # Mesa 3-D graphics library
-# Version:  3.1
-# Copyright (C) 1995-1999  Brian Paul
+# Version:  3.3
+# Copyright (C) 1995-2000  Brian Paul
 
 
 # Makefile for GLUT-based demo programs for BeOS R4
@@ -17,9 +17,45 @@ GL_LIBS = -L$(LIBDIR) -L/boot/home/config/lib -Xlinker -rpath $(LIBDIR) -lbe -lg
 
 LIB_DEP = $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GLU_LIB) $(LIBDIR)/$(GLUT_LIB)
 
-PROGS = bounce clearspd drawpix gamma gears glinfo gloss isosurf \
-	morph3d multiarb osdemo paltex pointblast reflect \
-	renormal spectex stex3d texcyl texobj trispd winpos
+PROGS = bounce \
+	clearspd \
+	cubemap \
+	drawpix \
+	fire \
+	gamma \
+	gears \
+	geartrain \
+	glinfo \
+	gloss \
+	gltestperf \
+	glutfx \
+	isosurf \
+	ipers \
+	lodbias \
+	morph3d \
+	multiarb \
+	occlude \
+	osdemo \
+	paltex \
+	pixeltex \
+	pointblast \
+	ray \
+	readpix \
+	reflect \
+	renormal \
+	spectex \
+	stex3d \
+	teapot \
+	terrain \
+	tessdemo \
+	texcyl \
+	texdown \
+	texenv \
+	texobj \
+	trispd \
+	tunnel \
+	tunnel2 \
+	winpos
 
 
 ##### RULES #####

progs/demos/Makefile.X11

@@ -1,9 +1,8 @@
-# $Id: Makefile.X11,v 1.3 1999/10/27 10:09:53 brianp Exp $
+# $Id: Makefile.X11,v 1.14 2000/06/27 16:54:18 brianp Exp $
 
 # Mesa 3-D graphics library
-# Version:  3.1
-# Copyright (C) 1995-1998  Brian Paul
-
+# Version:  3.3
+# Copyright (C) 1995-2000  Brian Paul
 
 # Makefile for GLUT-based demo programs for Unix/X11
 
@@ -13,13 +12,49 @@
 INCDIR = ../include
 LIBDIR = ../lib
 
-GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(XLIBS)
+GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(APP_LIB_DEPS)
 
 LIB_DEP = $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GLU_LIB) $(LIBDIR)/$(GLUT_LIB)
 
-PROGS = bounce clearspd drawpix gamma gears glinfo gloss glutfx isosurf \
-	morph3d multiarb osdemo paltex pointblast reflect \
-	renormal spectex stex3d tessdemo texcyl texobj trispd winpos \
+PROGS = bounce \
+	clearspd \
+	cubemap \
+	drawpix \
+	fire \
+	gamma \
+	gears \
+	geartrain \
+	glinfo \
+	gloss \
+	gltestperf \
+	glutfx \
+	isosurf \
+	ipers \
+	lodbias \
+	morph3d \
+	multiarb \
+	occlude \
+	osdemo \
+	paltex \
+	pixeltex \
+	pointblast \
+	ray \
+	readpix \
+	reflect \
+	renormal \
+	spectex \
+	stex3d \
+	teapot \
+	terrain \
+	tessdemo \
+	texcyl \
+	texdown \
+	texenv \
+	texobj \
+	trispd \
+	tunnel \
+	tunnel2 \
+	winpos
 
 
 ##### RULES #####

progs/demos/Makefile.cygnus

@@ -1,8 +1,8 @@
-# $Id: Makefile.cygnus,v 1.2 1999/10/22 20:37:23 brianp Exp $
+# $Id: Makefile.cygnus,v 1.11 2000/06/27 16:54:18 brianp Exp $
 
 # Mesa 3-D graphics library
-# Version:  3.1
-# Copyright (C) 1995-1999  Brian Paul
+# Version:  3.3
+# Copyright (C) 1995-2000  Brian Paul
 
 
 # Makefile for demo programs for cygnus
@@ -19,9 +19,45 @@ GL_LIBS = -L$(LIBDIR) -lglut -lMesaGLU -lMesaGL -lm $(WLIBS)
 
 LIB_DEP = $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GLU_LIB) $(LIBDIR)/$(GLUT_LIB)
 
-PROGS = clearspd drawpix gamma gears glinfo glutfx gloss isosurf \
-	morph3d multiext osdemo paltex pointblast reflect \
-	renormal spectex stex3d tessdemo texcyl texobj trispd winpos
+PROGS = bounce \
+	clearspd \
+	cubemap \
+	drawpix \
+	fire \
+	gamma \
+	gears \
+	geartrain \
+	glinfo \
+	gloss \
+	gltestperf \
+	glutfx \
+	isosurf \
+	ipers \
+	lodbias \
+	morph3d \
+	multiarb \
+	occlude \
+	osdemo \
+	paltex \
+	pixeltex \
+	pointblast \
+	ray \
+	readpix \
+	reflect \
+	renormal \
+	spectex \
+	stex3d \
+	teapot \
+	terrain \
+	tessdemo \
+	texcyl \
+	texdown \
+	texenv \
+	texobj \
+	trispd \
+	tunnel \
+	tunnel2 \
+	winpos
 
 
 ##### RULES #####

progs/demos/README

@@ -0,0 +1,230 @@
+INTRODUCTION
+------------
+
+This directory is usually included in the Mesa demos distribution or
+in the GLUT distribution.
+
+I have written the demos included in this directory mainly for showing
+the capabilities of the Mesa library when using the Voodoo driver.
+However all the demos are written using the GLUT and OpenGL so they
+work with any GLUT/OpenGL platform (tested: Linux+Mesa+Voodoo driver,
+Linux+Mesa+X11 driver, Win95+Mesa+Voodoo driver and SGI Onyx IR thanks
+to Mark Kilgard).
+
+All the demos make an heavy use of texture mapping, blending, etc. so
+you _need_ some kind of hardware support for the OpenGL otherwise they
+will run at ~1fps. You need also a OpenGL 1.1 compliant library.
+
+You can find some screenshot of these demos at
+http://www-hmw.caribel.pisa.it/fxmesa/fxdemos.hmtl
+
+Write me if you find some bug in the demos.
+
+David Bucciarelli (tech.hmw@plus.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
+
+
+A BRIEF DESCRIPTION OF THE DEMOS
+--------------------------------
+
+
+IPERS
+-----
+
+Sources: ipers.c image.c
+
+A nice spinning fractal object.
+
+
+RAY
+---
+
+Sources: ray.c
+
+I'm using ray tracing to dynamically generate texture maps with
+specular, diffuse, shadows, and mirror colors. Each frame the texture
+maps of the plane and of the sphere are partially updated.  With this
+technique you can obtain true mirrors, shadows, specular highlights,
+bump mapping, etc. in realtime.  This demo is really CPU intensive
+(~25fps on a PentiumII@300MHz with a Pure3D).  Support on-the-fly
+switching between fullscreen and in-window rendering under Linux/Mesa
+(start your X server in 16 bpp mode and press the spacebar).
+
+
+TUNNEL
+------
+
+Sources: tunnel.c image.c sources.c
+Data: bw.rgb tile.rgb
+
+The model was designed and prelighted with Alias|Wavefront
+PowerAnimator V8. Triangle strips were built with a tool written by me
+and then statically included in the sources.  This demo doesn't
+require the ZBuffer and use antialiased polygons.  Support on-the-fly
+switching between fullscreen and in-window rendering under Linux/Mesa
+(start your X server in 16 bpp mode and press the spacebar).
+
+
+TUNNEL2
+------
+
+Sources: tunnel2.c image.c sources.c
+Data: bw.rgb tile.rgb
+
+The some tunnel demo but with two output channels. A nice
+example of the Mesa/Voodoo support for multiple boards in
+the some PC.
+
+
+TEAPOT
+------
+
+Sources: teapot.c image.c dteapot.c shadow.c
+Data: bw.rgb tile.rgb
+
+The shadow is drawn projecting the teapot geometry over the plane. All
+other light effects are drawn using the standard OpenGL capabilities.
+Support on-the-fly switching between fullscreen and in-window
+rendering under Linux/Mesa (start your X server in 16 bpp mode and
+press the spacebar).
+
+
+FIRE
+----
+
+Sources: fire.c image.c
+Data: s128.rgb tree2.rgb
+
+The demo use a small particle system to draw some nice visual effect.
+You can interactively change many parameters of the particle system
+and you can choose the number of particles at the startup ('fire
+4000').  This demo should be called fountain.  Support on-the-fly
+switching between fullscreen and in-window rendering under Linux/Mesa
+(start your X server in 16 bpp mode and press the spacebar).
+
+
+TERRAIN
+-------
+
+Sources: mesaland.c
+
+This demo is base on another demo written by Mikael SkiZoWalker.  I
+have added the capabilities to freely fly around, view culling and
+some nice color.  Support on-the-fly switching between fullscreen and
+in-window rendering under Linux/Mesa (start your X server in 16 bpp
+mode and press the spacebar).
+
+
+GLTEST
+------
+
+Sources: gltest.c
+
+This is a simple benchmark suite that I'm using in the development of
+the Mesa/Voodoo driver. Type 'gltest >my.res' and you will get some
+data about the performances of your OpenGL. Follow the results with my
+PC (Linux+Mesa-2.6+PentiumII@300MHz+Pure3D):
+
+Simple Points
+587900.080674 Pnts/sec
+
+Smooth Lines
+SIZE=480 => 39007.426183 Lins/sec
+SIZE=250 => 74575.016485 Lins/sec
+SIZE=100 => 179734.882409 Lins/sec
+SIZE=050 => 183987.795297 Lins/sec
+SIZE=025 => 183820.086309 Lins/sec
+
+
+ZSmooth Triangles
+SIZE=480 => 784.954997 Tris/sec
+SIZE=250 => 2862.325889 Tris/sec
+SIZE=100 => 17779.492938 Tris/sec
+SIZE=050 => 159339.829844 Tris/sec
+SIZE=025 => 428602.984008 Tris/sec
+
+
+ZSmooth Tex Blend Triangles
+SIZE=480 => 784.473931 Tris/sec
+SIZE=250 => 2853.781513 Tris/sec
+SIZE=100 => 17598.252146 Tris/sec
+SIZE=050 => 152632.578337 Tris/sec
+SIZE=025 => 377584.760048 Tris/sec
+
+
+ZSmooth Tex Blend TMesh Triangles
+SIZE=400 => 563.900695 Tris/sec, MPixel Fill/sec: 45.112056
+SIZE=250 => 1449.777225 Tris/sec, MPixel Fill/sec: 45.305538
+SIZE=100 => 8702.869121 Tris/sec, MPixel Fill/sec: 43.514346
+SIZE=050 => 31896.867466 Tris/sec, MPixel Fill/sec: 39.871084
+SIZE=025 => 114037.262894 Tris/sec, MPixel Fill/sec: 35.636645
+SIZE=010 => 220494.235839 Tris/sec, MPixel Fill/sec: 11.024712
+SIZE=005 => 225615.506651 Tris/sec, MPixel Fill/sec: 2.820194
+SIZE=002 => 225607.681439 Tris/sec, MPixel Fill/sec: 0.451215
+
+
+Color/Depth Buffer Clears
+295.042474 Clrs/sec, MPixel Fill/sec: 90.553256
+
+
+Follow the results with my
+PC (Linux+Mesa-3.0beta5+PentiumII@300MHz+Voodoo2):
+
+
+Simple Points
+1620113.525130 Pnts/sec
+
+Smooth Lines
+SIZE=480 => 73841.166065 Lins/sec
+SIZE=250 => 140794.035316 Lins/sec
+SIZE=100 => 344185.242157 Lins/sec
+SIZE=050 => 420399.008289 Lins/sec
+SIZE=025 => 420261.389773 Lins/sec
+
+
+ZSmooth Triangles
+SIZE=480 => 1434.668506 Tris/sec
+SIZE=250 => 5228.449614 Tris/sec
+SIZE=100 => 46603.815842 Tris/sec
+SIZE=050 => 325757.045961 Tris/sec
+SIZE=025 => 589022.403336 Tris/sec
+
+
+ZSmooth Tex Blend Triangles
+SIZE=480 => 1414.900041 Tris/sec
+SIZE=250 => 5006.055235 Tris/sec
+SIZE=100 => 43602.252031 Tris/sec
+SIZE=050 => 303497.092692 Tris/sec
+SIZE=025 => 517087.428669 Tris/sec
+
+
+ZSmooth Tex Blend TMesh Triangles
+SIZE=400 => 1023.273112 Tris/sec, MPixel Fill/sec: 81.861849
+SIZE=250 => 2595.692121 Tris/sec, MPixel Fill/sec: 81.115379
+SIZE=100 => 15788.198912 Tris/sec, MPixel Fill/sec: 78.940995
+SIZE=050 => 58784.121300 Tris/sec, MPixel Fill/sec: 73.480152
+SIZE=025 => 244233.873481 Tris/sec, MPixel Fill/sec: 76.323085
+SIZE=010 => 474995.004191 Tris/sec, MPixel Fill/sec: 23.749750
+SIZE=005 => 475124.354163 Tris/sec, MPixel Fill/sec: 5.939054
+SIZE=002 => 474959.089503 Tris/sec, MPixel Fill/sec: 0.949918
+
+
+Color/Depth Buffer Clears
+478.654830 Clrs/sec, MPixel Fill/sec: 146.906826
+
+
+PALTEX and GLBPALTX
+-------------------
+
+Sources: paltex.c and glbpaltx.c
+
+The PALTEX example was written by Brian Paul and it shows the
+capabilities of the GL_EXT_paletted_texture extension.  I have written
+the other example in order to show the capabilities of the
+gl3DfxSetPaletteEXT() (it used only by GLQuake and Quake2).

progs/demos/bounce.c

@@ -1,33 +1,13 @@
-/* $Id: bounce.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: bounce.c,v 1.2.4.1 2000/08/16 20:36:32 brianp Exp $ */
 
 /*
- * Bouncing ball demo.  Color index mode only!
+ * Bouncing ball demo.
  *
  * This program is in the public domain
  *
  * Brian Paul
- */
-
-/* Conversion to GLUT by Mark J. Kilgard */
-
-/*
- * $Log: bounce.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.3  1999/03/18 08:16:14  joukj
- *
- *     cmpstr needs string.h to included to avoid warnings
- *
- * Revision 3.2  1998/11/28 01:13:02  brianp
- * now sets an initial window position and size
- *
- * Revision 3.1  1998/11/28 01:06:57  brianp
- * now works in RGB mode by default
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
  *
+ * Conversion to GLUT by Mark J. Kilgard
  */
 
 
@@ -81,9 +61,9 @@ make_ball(void)
         glColor3f(1, 1, 1);
       }
 
-      x = COS(b) * COS(a);
-      y = SIN(b) * COS(a);
-      z = SIN(a);
+      x = radius * COS(b) * COS(a);
+      y = radius * SIN(b) * COS(a);
+      z = radius * SIN(a);
       glVertex3f(x, y, z);
 
       x = radius * COS(b) * COS(a + da);
@@ -195,7 +175,7 @@ idle(void)
   glutPostRedisplay();
 }
 
-void 
+static void 
 visible(int vis)
 {
   if (vis == GLUT_VISIBLE)

progs/demos/clearspd.c

@@ -1,4 +1,4 @@
-/* $Id: clearspd.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: clearspd.c,v 1.2 2000/04/10 16:25:15 brianp Exp $ */
 
 /*
  * Simple GLUT program to measure glClear() and glutSwapBuffers() speed.
@@ -7,8 +7,11 @@
 
 /*
  * $Log: clearspd.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.2  2000/04/10 16:25:15  brianp
+ * fixed visual selection and reporting results
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.3  1999/03/28 18:18:33  brianp
  * minor clean-up
@@ -74,6 +77,7 @@ static void Display( void )
       t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
       for (i=0;i<Loops;i++) {
          glClear( BufferMask );
+         glFlush();
       }
       t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
       glutSwapBuffers();
@@ -88,12 +92,12 @@ static void Display( void )
    clearRate = Loops / (t1-t0);
    pixelRate = clearRate * Width * Height;
    if (SwapFlag) {
-      printf("Rate: %d clears+swaps in %gs = %g clears+swaps/s   %d pixels/s\n",
-             Loops, t1-t0, clearRate, (int)pixelRate );
+      printf("Rate: %d clears+swaps in %gs = %g clears+swaps/s   %g pixels/s\n",
+             Loops, t1-t0, clearRate, pixelRate );
    }
    else {
-      printf("Rate: %d clears in %gs = %g clears/s   %d pixels/s\n",
-             Loops, t1-t0, clearRate, (int)pixelRate);
+      printf("Rate: %d clears in %gs = %g clears/s   %g pixels/s\n",
+             Loops, t1-t0, clearRate, pixelRate);
    }
 }
 
@@ -194,6 +198,8 @@ static void Help( const char *program )
 
 int main( int argc, char *argv[] )
 {
+   GLint mode;
+
    printf("For options:  %s -help\n", argv[0]);
 
    Init( argc, argv );
@@ -202,7 +208,15 @@ int main( int argc, char *argv[] )
    glutInitWindowSize( (int) Width, (int) Height );
    glutInitWindowPosition( 0, 0 );
 
-   glutInitDisplayMode( ColorMode | GLUT_DOUBLE | GLUT_DEPTH | GLUT_STENCIL | GLUT_ACCUM );
+   mode = ColorMode | GLUT_DOUBLE;
+   if (BufferMask & GL_STENCIL_BUFFER_BIT)
+      mode |= GLUT_STENCIL;
+   if (BufferMask & GL_ACCUM_BUFFER_BIT)
+      mode |= GLUT_ACCUM;
+   if (BufferMask & GL_DEPTH_BUFFER_BIT)
+      mode |= GLUT_DEPTH;
+         
+   glutInitDisplayMode(mode);
 
    glutCreateWindow( argv[0] );
 

progs/demos/cubemap.c

@@ -0,0 +1,250 @@
+/* $Id: cubemap.c,v 1.3 2000/06/27 17:04:43 brianp Exp $ */
+
+/*
+ * GL_ARB_texture_cube_map demo
+ *
+ * Brian Paul
+ * May 2000
+ *
+ *
+ * Copyright (C) 2000  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.
+ */
+
+
+/*
+ * This is a pretty minimalistic demo for now.  Eventually, use some
+ * interesting cube map textures and 3D objects.
+ * For now, we use 6 checkerboard "walls" and a sphere (good for
+ * verification purposes).
+ */
+
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "GL/glut.h"
+
+static GLfloat Xrot = 0, Yrot = 0;
+
+
+static void draw( void )
+{
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glMatrixMode(GL_TEXTURE);
+   glLoadIdentity();
+   glRotatef(Xrot, 1, 0, 0);
+   glRotatef(Yrot, 0, 1, 0);
+   glutSolidSphere(2.0, 20, 20);
+   glMatrixMode(GL_MODELVIEW);
+
+   glutSwapBuffers();
+}
+
+
+static void idle(void)
+{
+   Yrot += 5.0;
+   glutPostRedisplay();
+}
+
+
+static void set_mode(GLuint mode)
+{
+   if (mode == 0) {
+      glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
+      glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
+      glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_ARB);
+      printf("GL_REFLECTION_MAP_ARB mode\n");
+   }
+   else if (mode == 1) {
+      glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
+      glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
+      glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_ARB);
+      printf("GL_NORMAL_MAP_ARB mode\n");
+   }
+   glEnable(GL_TEXTURE_GEN_S);
+   glEnable(GL_TEXTURE_GEN_T);
+   glEnable(GL_TEXTURE_GEN_R);
+}
+
+
+static void key(unsigned char k, int x, int y)
+{
+   static GLboolean anim = GL_TRUE;
+   static GLuint mode = 0;
+   (void) x;
+   (void) y;
+   switch (k) {
+      case ' ':
+         anim = !anim;
+         if (anim)
+            glutIdleFunc(idle);
+         else
+            glutIdleFunc(NULL);
+         break;
+      case 'm':
+         mode = !mode;
+         set_mode(mode);
+         break;
+      case 27:
+         exit(0);
+   }
+   glutPostRedisplay();
+}
+
+
+static void specialkey(int key, int x, int y)
+{
+   GLfloat step = 10;
+   (void) x;
+   (void) y;
+   switch (key) {
+      case GLUT_KEY_UP:
+         Xrot -= step;
+         break;
+      case GLUT_KEY_DOWN:
+         Xrot += step;
+         break;
+      case GLUT_KEY_LEFT:
+         Yrot -= step;
+         break;
+      case GLUT_KEY_RIGHT:
+         Yrot += step;
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+/* new window size or exposure */
+static void reshape(int width, int height)
+{
+   glViewport(0, 0, (GLint)width, (GLint)height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum( -2.0, 2.0, -2.0, 2.0, 6.0, 20.0 );
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef( 0.0, 0.0, -8.0 );
+}
+
+
+static void init( void )
+{
+#define CUBE_TEX_SIZE 64
+   GLubyte image[CUBE_TEX_SIZE][CUBE_TEX_SIZE][3];
+   static const GLubyte colors[6][3] = {
+      { 255,   0,   0 },
+      {   0, 255, 255 },
+      {   0, 255,   0 },
+      { 255,   0, 255 },
+      {   0,   0, 255 },
+      { 255, 255,   0 }
+   };
+   static const GLenum targets[6] = {
+      GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
+      GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
+      GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
+      GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
+      GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
+      GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
+   };
+
+   GLint i, j, f;
+
+   /* check for extension */
+   {
+      char *exten = (char *) glGetString(GL_EXTENSIONS);
+      if (!strstr(exten, "GL_ARB_texture_cube_map")) {
+         printf("Sorry, this demo requires GL_ARB_texture_cube_map\n");
+         exit(0);
+      }
+   }
+
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+   /* make colored checkerboard cube faces */
+   for (f = 0; f < 6; f++) {
+      for (i = 0; i < CUBE_TEX_SIZE; i++) {
+         for (j = 0; j < CUBE_TEX_SIZE; j++) {
+            if ((i/4 + j/4) & 1) {
+               image[i][j][0] = colors[f][0];
+               image[i][j][1] = colors[f][1];
+               image[i][j][2] = colors[f][2];
+            }
+            else {
+               image[i][j][0] = 255;
+               image[i][j][1] = 255;
+               image[i][j][2] = 255;
+            }
+         }
+      }
+
+      glTexImage2D(targets[f], 0, GL_RGB, CUBE_TEX_SIZE, CUBE_TEX_SIZE, 0,
+                   GL_RGB, GL_UNSIGNED_BYTE, image);
+   }
+
+#if 1
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+#else
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+#endif
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+   glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+   glEnable(GL_TEXTURE_CUBE_MAP_ARB);
+
+   glClearColor(.3, .3, .3, 0);
+   glColor3f( 1.0, 1.0, 1.0 );
+
+   set_mode(0);
+}
+
+
+static void usage(void)
+{
+   printf("keys:\n");
+   printf("  SPACE - toggle animation\n");
+   printf("  CURSOR KEYS - rotation\n");
+   printf("  m - toggle texgen reflection mode\n");
+}
+
+
+int main( int argc, char *argv[] )
+{
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(300, 300);
+   glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
+   glutCreateWindow("Texture Cube Maping");
+   init();
+   glutReshapeFunc( reshape );
+   glutKeyboardFunc( key );
+   glutSpecialFunc( specialkey );
+   glutIdleFunc( idle );
+   glutDisplayFunc( draw );
+   usage();
+   glutMainLoop();
+   return 0;
+}

progs/demos/fire.c

@@ -0,0 +1,738 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#include <mmsystem.h>
+#endif
+
+#include <GL/glut.h>
+#include "../util/readtex.c"
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+#define vinit(a,i,j,k) {\
+  (a)[0]=i;\
+  (a)[1]=j;\
+  (a)[2]=k;\
+}
+
+#define vinit4(a,i,j,k,w) {\
+  (a)[0]=i;\
+  (a)[1]=j;\
+  (a)[2]=k;\
+  (a)[3]=w;\
+}
+
+
+#define vadds(a,dt,b) {\
+  (a)[0]+=(dt)*(b)[0];\
+  (a)[1]+=(dt)*(b)[1];\
+  (a)[2]+=(dt)*(b)[2];\
+}
+
+#define vequ(a,b) {\
+  (a)[0]=(b)[0];\
+  (a)[1]=(b)[1];\
+  (a)[2]=(b)[2];\
+}
+
+#define vinter(a,dt,b,c) {\
+  (a)[0]=(dt)*(b)[0]+(1.0-dt)*(c)[0];\
+  (a)[1]=(dt)*(b)[1]+(1.0-dt)*(c)[1];\
+  (a)[2]=(dt)*(b)[2]+(1.0-dt)*(c)[2];\
+}
+
+#define clamp(a)        ((a) < 0.0 ? 0.0 : ((a) < 1.0 ? (a) : 1.0))
+
+#define vclamp(v) {\
+  (v)[0]=clamp((v)[0]);\
+  (v)[1]=clamp((v)[1]);\
+  (v)[2]=clamp((v)[2]);\
+}
+
+static int WIDTH = 640;
+static int HEIGHT = 480;
+
+#define FRAME 50
+#define DIMP 20.0
+#define DIMTP 16.0
+
+#define RIDCOL 0.4
+
+#define NUMTREE 50
+#define TREEINR 2.5
+#define TREEOUTR 8.0
+
+#define AGRAV -9.8
+
+typedef struct
+{
+   int age;
+   float p[3][3];
+   float v[3];
+   float c[3][4];
+}
+part;
+
+static float treepos[NUMTREE][3];
+
+static float black[3] = { 0.0, 0.0, 0.0 };
+static float blu[3] = { 0.0, 0.2, 1.0 };
+static float blu2[3] = { 0.0, 1.0, 1.0 };
+
+static float fogcolor[4] = { 1.0, 1.0, 1.0, 1.0 };
+
+static float q[4][3] = {
+   {-DIMP, 0.0, -DIMP},
+   {DIMP, 0.0, -DIMP},
+   {DIMP, 0.0, DIMP},
+   {-DIMP, 0.0, DIMP}
+};
+
+static float qt[4][2] = {
+   {-DIMTP, -DIMTP},
+   {DIMTP, -DIMTP},
+   {DIMTP, DIMTP},
+   {-DIMTP, DIMTP}
+};
+
+static int win = 0;
+
+static int np;
+static float eject_r, dt, maxage, eject_vy, eject_vl;
+static short shadows;
+static float ridtri;
+static int fog = 1;
+static int help = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+
+static part *p;
+
+static GLuint groundid;
+static GLuint treeid;
+
+static float obs[3] = { 2.0, 1.0, 0.0 };
+static float dir[3];
+static float v = 0.0;
+static float alpha = -90.0;
+static float beta = 90.0;
+
+static float
+gettime(void)
+{
+   static clock_t told = 0;
+   clock_t tnew, ris;
+
+   tnew = clock();
+
+   ris = tnew - told;
+
+   told = tnew;
+
+   return (ris / (float) CLOCKS_PER_SEC);
+}
+
+static float
+vrnd(void)
+{
+   return (((float) rand()) / RAND_MAX);
+}
+
+static void
+setnewpart(part * p)
+{
+   float a, v[3], *c;
+
+   p->age = 0;
+
+   a = vrnd() * 3.14159265359 * 2.0;
+
+   vinit(v, sin(a) * eject_r * vrnd(), 0.15, cos(a) * eject_r * vrnd());
+   vinit(p->p[0], v[0] + vrnd() * ridtri, v[1] + vrnd() * ridtri,
+	 v[2] + vrnd() * ridtri);
+   vinit(p->p[1], v[0] + vrnd() * ridtri, v[1] + vrnd() * ridtri,
+	 v[2] + vrnd() * ridtri);
+   vinit(p->p[2], v[0] + vrnd() * ridtri, v[1] + vrnd() * ridtri,
+	 v[2] + vrnd() * ridtri);
+
+   vinit(p->v, v[0] * eject_vl / (eject_r / 2),
+	 vrnd() * eject_vy + eject_vy / 2, v[2] * eject_vl / (eject_r / 2));
+
+   c = blu;
+
+   vinit4(p->c[0], c[0] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[1] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[2] * ((1.0 - RIDCOL) + vrnd() * RIDCOL), 1.0);
+   vinit4(p->c[1], c[0] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[1] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[2] * ((1.0 - RIDCOL) + vrnd() * RIDCOL), 1.0);
+   vinit4(p->c[2], c[0] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[1] * ((1.0 - RIDCOL) + vrnd() * RIDCOL),
+	  c[2] * ((1.0 - RIDCOL) + vrnd() * RIDCOL), 1.0);
+}
+
+static void
+setpart(part * p)
+{
+   float fact;
+
+   if (p->p[0][1] < 0.1) {
+      setnewpart(p);
+      return;
+   }
+
+   p->v[1] += AGRAV * dt;
+
+   vadds(p->p[0], dt, p->v);
+   vadds(p->p[1], dt, p->v);
+   vadds(p->p[2], dt, p->v);
+
+   p->age++;
+
+   if ((p->age) > maxage) {
+      vequ(p->c[0], blu2);
+      vequ(p->c[1], blu2);
+      vequ(p->c[2], blu2);
+   }
+   else {
+      fact = 1.0 / maxage;
+      vadds(p->c[0], fact, blu2);
+      vclamp(p->c[0]);
+      p->c[0][3] = fact * (maxage - p->age);
+
+      vadds(p->c[1], fact, blu2);
+      vclamp(p->c[1]);
+      p->c[1][3] = fact * (maxage - p->age);
+
+      vadds(p->c[2], fact, blu2);
+      vclamp(p->c[2]);
+      p->c[2][3] = fact * (maxage - p->age);
+   }
+}
+
+static void
+drawtree(float x, float y, float z)
+{
+   glBegin(GL_QUADS);
+   glTexCoord2f(0.0, 0.0);
+   glVertex3f(x - 1.5, y + 0.0, z);
+
+   glTexCoord2f(1.0, 0.0);
+   glVertex3f(x + 1.5, y + 0.0, z);
+
+   glTexCoord2f(1.0, 1.0);
+   glVertex3f(x + 1.5, y + 3.0, z);
+
+   glTexCoord2f(0.0, 1.0);
+   glVertex3f(x - 1.5, y + 3.0, z);
+
+
+   glTexCoord2f(0.0, 0.0);
+   glVertex3f(x, y + 0.0, z - 1.5);
+
+   glTexCoord2f(1.0, 0.0);
+   glVertex3f(x, y + 0.0, z + 1.5);
+
+   glTexCoord2f(1.0, 1.0);
+   glVertex3f(x, y + 3.0, z + 1.5);
+
+   glTexCoord2f(0.0, 1.0);
+   glVertex3f(x, y + 3.0, z - 1.5);
+
+   glEnd();
+
+}
+
+static void
+calcposobs(void)
+{
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[2] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[1] = cos(beta * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+reshape(int width, int height)
+{
+   WIDTH = width;
+   HEIGHT = height;
+   glViewport(0, 0, (GLint) width, (GLint) height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(70.0, width / (float) height, 0.1, 30.0);
+
+   glMatrixMode(GL_MODELVIEW);
+}
+
+static void
+printhelp(void)
+{
+   glColor4f(0.0, 0.0, 0.0, 0.5);
+   glRecti(40, 40, 600, 440);
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Togle Help");
+
+   glRasterPos2i(60, 360);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Increase particle size");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "T - Decrease particle size");
+
+   glRasterPos2i(60, 300);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "r - Increase emission radius");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "R - Decrease emission radius");
+
+   glRasterPos2i(60, 240);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Togle Fog");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "s - Togle shadows");
+   glRasterPos2i(60, 180);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 150);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+   glRasterPos2i(60, 120);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+
+   glRasterPos2i(60, 90);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "j - Togle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "(No Joystick control available)");
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha +=
+	       2.5 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.5 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.01;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.01;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+drawfire(void)
+{
+   static int count = 0;
+   static char frbuf[80];
+   int j;
+   float fr;
+
+   dojoy();
+
+   glEnable(GL_DEPTH_TEST);
+
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glDepthMask(GL_TRUE);
+   glClearColor(1.0, 1.0, 1.0, 1.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   calcposobs();
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 1.0, 0.0);
+
+   glColor4f(1.0, 1.0, 1.0, 1.0);
+
+   glEnable(GL_TEXTURE_2D);
+
+   glBindTexture(GL_TEXTURE_2D, groundid);
+   glBegin(GL_QUADS);
+   glTexCoord2fv(qt[0]);
+   glVertex3fv(q[0]);
+   glTexCoord2fv(qt[1]);
+   glVertex3fv(q[1]);
+   glTexCoord2fv(qt[2]);
+   glVertex3fv(q[2]);
+   glTexCoord2fv(qt[3]);
+   glVertex3fv(q[3]);
+   glEnd();
+
+   glEnable(GL_ALPHA_TEST);
+   glAlphaFunc(GL_GEQUAL, 0.9);
+
+   glBindTexture(GL_TEXTURE_2D, treeid);
+   for (j = 0; j < NUMTREE; j++)
+      drawtree(treepos[j][0], treepos[j][1], treepos[j][2]);
+
+   glDisable(GL_TEXTURE_2D);
+   glDepthMask(GL_FALSE);
+   glDisable(GL_ALPHA_TEST);
+
+   if (shadows) {
+      glBegin(GL_TRIANGLES);
+      for (j = 0; j < np; j++) {
+	 glColor4f(black[0], black[1], black[2], p[j].c[0][3]);
+	 glVertex3f(p[j].p[0][0], 0.1, p[j].p[0][2]);
+
+	 glColor4f(black[0], black[1], black[2], p[j].c[1][3]);
+	 glVertex3f(p[j].p[1][0], 0.1, p[j].p[1][2]);
+
+	 glColor4f(black[0], black[1], black[2], p[j].c[2][3]);
+	 glVertex3f(p[j].p[2][0], 0.1, p[j].p[2][2]);
+      }
+      glEnd();
+   }
+
+   glBegin(GL_TRIANGLES);
+   for (j = 0; j < np; j++) {
+      glColor4fv(p[j].c[0]);
+      glVertex3fv(p[j].p[0]);
+
+      glColor4fv(p[j].c[1]);
+      glVertex3fv(p[j].p[1]);
+
+      glColor4fv(p[j].c[2]);
+      glVertex3fv(p[j].p[2]);
+
+      setpart(&p[j]);
+   }
+   glEnd();
+
+   if ((count % FRAME) == 0) {
+      fr = gettime();
+      sprintf(frbuf, "Frame rate: %f", FRAME / fr);
+   }
+
+   glDisable(GL_TEXTURE_2D);
+   glDisable(GL_ALPHA_TEST);
+   glDisable(GL_DEPTH_TEST);
+   glDisable(GL_FOG);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(370, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Fire V1.5 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+   if (help)
+      printhelp();
+
+   reshape(WIDTH, HEIGHT);
+   glPopMatrix();
+
+   glutSwapBuffers();
+
+   count++;
+}
+
+
+static void
+special(int key, int x, int y)
+{
+   switch (key) {
+   case GLUT_KEY_LEFT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+key(unsigned char key, int x, int y)
+{
+   switch (key) {
+   case 27:
+      exit(0);
+      break;
+
+   case 'a':
+      v += 0.01;
+      break;
+   case 'z':
+      v -= 0.01;
+      break;
+
+   case 'j':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+   case 's':
+      shadows = !shadows;
+      break;
+   case 'R':
+      eject_r -= 0.03;
+      break;
+   case 'r':
+      eject_r += 0.03;
+      break;
+   case 't':
+      ridtri += 0.005;
+      break;
+   case 'T':
+      ridtri -= 0.005;
+      break;
+#ifdef XMESA
+   case ' ':
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      fullscreen = (!fullscreen);
+      break;
+#endif
+   }
+}
+
+static void
+inittextures(void)
+{
+   GLenum gluerr;
+   GLubyte tex[128][128][4];
+
+   glGenTextures(1, &groundid);
+   glBindTexture(GL_TEXTURE_2D, groundid);
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+   if (!LoadRGBMipmaps("../images/s128.rgb", GL_RGB)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+
+   glGenTextures(1, &treeid);
+   glBindTexture(GL_TEXTURE_2D, treeid);
+
+   if (1)
+   {
+      int w, h;
+      GLenum format;
+      int x, y;
+      GLubyte *image = LoadRGBImage("../images/tree3.rgb", &w, &h, &format);
+
+      if (!image) {
+	 fprintf(stderr, "Error reading a texture.\n");
+	 exit(-1);
+      }
+
+      for (y = 0; y < 128; y++)
+	 for (x = 0; x < 128; x++) {
+	    tex[x][y][0] = image[(y + x * 128) * 3];
+	    tex[x][y][1] = image[(y + x * 128) * 3 + 1];
+	    tex[x][y][2] = image[(y + x * 128) * 3 + 2];
+	    if ((tex[x][y][0] == tex[x][y][1]) &&
+		(tex[x][y][1] == tex[x][y][2]) && (tex[x][y][2] == 255))
+	       tex[x][y][3] = 0;
+	    else
+	       tex[x][y][3] = 255;
+	 }
+
+      if ((gluerr = gluBuild2DMipmaps(GL_TEXTURE_2D, 4, 128, 128, GL_RGBA,
+				      GL_UNSIGNED_BYTE, (GLvoid *) (tex)))) {
+	 fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+	 exit(-1);
+      }
+   }
+   else {
+      if (!LoadRGBMipmaps("../images/tree2.rgba", GL_RGBA)) {
+	 fprintf(stderr, "Error reading a texture.\n");
+	 exit(-1);
+      }
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+}
+
+static void
+inittree(void)
+{
+   int i;
+   float dist;
+
+   for (i = 0; i < NUMTREE; i++)
+      do {
+	 treepos[i][0] = vrnd() * TREEOUTR * 2.0 - TREEOUTR;
+	 treepos[i][1] = 0.0;
+	 treepos[i][2] = vrnd() * TREEOUTR * 2.0 - TREEOUTR;
+	 dist =
+	    sqrt(treepos[i][0] * treepos[i][0] +
+		 treepos[i][2] * treepos[i][2]);
+      } while ((dist < TREEINR) || (dist > TREEOUTR));
+}
+
+int
+main(int ac, char **av)
+{
+   int i;
+
+   fprintf(stderr,
+	   "Fire V1.5\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+   /* Default settings */
+
+   WIDTH = 640;
+   HEIGHT = 480;
+   np = 800;
+   eject_r = 0.1;
+   dt = 0.015;
+   eject_vy = 4;
+   eject_vl = 1;
+   shadows = 1;
+   ridtri = 0.1;
+
+   maxage = 1.0 / dt;
+
+   if (ac == 2)
+      np = atoi(av[1]);
+
+   if (ac == 4) {
+      WIDTH = atoi(av[2]);
+      HEIGHT = atoi(av[3]);
+   }
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTH, HEIGHT);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+
+   if (!(win = glutCreateWindow("Fire"))) {
+      fprintf(stderr, "Error opening a window.\n");
+      exit(-1);
+   }
+
+   reshape(WIDTH, HEIGHT);
+
+   inittextures();
+
+   glShadeModel(GL_FLAT);
+   glEnable(GL_DEPTH_TEST);
+
+   glEnable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+   glFogf(GL_FOG_DENSITY, 0.1);
+#ifdef FX
+   glHint(GL_FOG_HINT, GL_NICEST);
+#endif
+
+   p = malloc(sizeof(part) * np);
+
+   for (i = 0; i < np; i++)
+      setnewpart(&p[i]);
+
+   inittree();
+
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+   glutDisplayFunc(drawfire);
+   glutIdleFunc(drawfire);
+   glutReshapeFunc(reshape);
+   glutMainLoop();
+
+   return (0);
+}

progs/demos/gamma.c

@@ -1,5 +1,5 @@
 
-/* $Id: gamma.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: gamma.c,v 1.2 2000/03/18 01:13:29 brianp Exp $ */
 
 /* Draw test patterns to help determine correct gamma value for a display.
    When the intensities of the inner squares nearly match the intensities
@@ -25,8 +25,11 @@
 
 /*
  * $Log: gamma.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.2  2000/03/18 01:13:29  brianp
+ * colors were computed incorrectly (Hans Nelles)
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.1  1999/06/19 01:35:38  brianp
  * merged in Kai Schuetz's RGB changes
@@ -130,8 +133,9 @@ gamma_ramp(GLfloat yoffs, GLfloat r, GLfloat g, GLfloat b)
 
   for(d = 1; d < 4; d++) {  /* increasing density from 25% to 75% */
     GLfloat xcoord = (-1.0 + d*0.4);
+    GLfloat t = d * 0.25;
 
-    glColor3f(r*d / 5.0, g*d / 5.0, b*d / 5.0); /* draw outer rect */
+    glColor3f(r*t, g*t, b*t); /* draw outer rect */
     glRectf(xcoord, yoffs, xcoord+0.4, yoffs + 0.5);
 
     glColor3f(0.0, 0.0, 0.0);   /* "clear" inner rect */

progs/demos/gears.c

@@ -1,10 +1,11 @@
-/* $Id: gears.c,v 1.2 1999/10/21 16:39:06 brianp Exp $ */
+/* $Id: gears.c,v 1.6 2000/04/06 02:22:59 brianp Exp $ */
 
 /*
  * 3-D gear wheels.  This program is in the public domain.
  *
  * Command line options:
  *    -info      print GL implementation information
+ *    -exit      automatically exit after 30 seconds
  *
  *
  * Brian Paul
@@ -12,24 +13,6 @@
 
 /* Conversion to GLUT by Mark J. Kilgard */
 
-/*
- * $Log: gears.c,v $
- * Revision 1.2  1999/10/21 16:39:06  brianp
- * added -info command line option
- *
- * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
- * Imported sources
- *
- * Revision 3.2  1999/06/03 17:07:36  brianp
- * an extra quad was being drawn in front and back faces
- *
- * Revision 3.1  1998/11/03 02:49:10  brianp
- * added fps output
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
 
 
 #include <math.h>
@@ -44,7 +27,7 @@
 
 static GLint T0 = 0;
 static GLint Frames = 0;
-
+static GLint autoexit = 0;
 
 /**
 
@@ -187,41 +170,44 @@ draw(void)
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
   glPushMatrix();
-  glRotatef(view_rotx, 1.0, 0.0, 0.0);
-  glRotatef(view_roty, 0.0, 1.0, 0.0);
-  glRotatef(view_rotz, 0.0, 0.0, 1.0);
+    glRotatef(view_rotx, 1.0, 0.0, 0.0);
+    glRotatef(view_roty, 0.0, 1.0, 0.0);
+    glRotatef(view_rotz, 0.0, 0.0, 1.0);
 
-  glPushMatrix();
-  glTranslatef(-3.0, -2.0, 0.0);
-  glRotatef(angle, 0.0, 0.0, 1.0);
-  glCallList(gear1);
-  glPopMatrix();
+    glPushMatrix();
+      glTranslatef(-3.0, -2.0, 0.0);
+      glRotatef(angle, 0.0, 0.0, 1.0);
+      glCallList(gear1);
+    glPopMatrix();
 
-  glPushMatrix();
-  glTranslatef(3.1, -2.0, 0.0);
-  glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
-  glCallList(gear2);
-  glPopMatrix();
+    glPushMatrix();
+      glTranslatef(3.1, -2.0, 0.0);
+      glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
+      glCallList(gear2);
+    glPopMatrix();
 
-  glPushMatrix();
-  glTranslatef(-3.1, 4.2, 0.0);
-  glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
-  glCallList(gear3);
-  glPopMatrix();
+    glPushMatrix();
+      glTranslatef(-3.1, 4.2, 0.0);
+      glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
+      glCallList(gear3);
+    glPopMatrix();
 
   glPopMatrix();
 
   glutSwapBuffers();
 
   Frames++;
+
   {
      GLint t = glutGet(GLUT_ELAPSED_TIME);
      if (t - T0 >= 5000) {
         GLfloat seconds = (t - T0) / 1000.0;
         GLfloat fps = Frames / seconds;
-        printf("%d frames in %g seconds = %g FPS\n", Frames, seconds, fps);
+        printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
         T0 = t;
         Frames = 0;
+        if ((t >= 999.0 * autoexit) && (autoexit))
+           exit(0);
      }
   }
 }
@@ -297,14 +283,11 @@ reshape(int width, int height)
 static void
 init(int argc, char *argv[])
 {
-  static GLfloat pos[4] =
-  {5.0, 5.0, 10.0, 0.0};
-  static GLfloat red[4] =
-  {0.8, 0.1, 0.0, 1.0};
-  static GLfloat green[4] =
-  {0.0, 0.8, 0.2, 1.0};
-  static GLfloat blue[4] =
-  {0.2, 0.2, 1.0, 1.0};
+  static GLfloat pos[4] = {5.0, 5.0, 10.0, 0.0};
+  static GLfloat red[4] = {0.8, 0.1, 0.0, 1.0};
+  static GLfloat green[4] = {0.0, 0.8, 0.2, 1.0};
+  static GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0};
+  GLint i;
 
   glLightfv(GL_LIGHT0, GL_POSITION, pos);
   glEnable(GL_CULL_FACE);
@@ -333,15 +316,21 @@ init(int argc, char *argv[])
 
   glEnable(GL_NORMALIZE);
 
-  if (argc > 1 && strcmp(argv[1], "-info")==0) {
-     printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
-     printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
-     printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
-     printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
+  for ( i=1; i<argc; i++ ) {
+    if (strcmp(argv[i], "-info")==0) {
+      printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+      printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+      printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+      printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
+    }
+    else if ( strcmp(argv[i], "-exit")==0) {
+      autoexit = 30;
+      printf("Auto Exit after %i seconds.\n", autoexit );
+    }
   }
 }
 
-void 
+static void 
 visible(int vis)
 {
   if (vis == GLUT_VISIBLE)

progs/demos/geartrain.dat

@@ -0,0 +1,119 @@
+BACKGROUND = 0.000 0.500 0.700
+
+ANAME = AXLE1
+ARADIUS = 1.000
+AAXIS = 2
+APOSITION = -7.000 0.000 0.000
+ACOLOR = 0.800 0.500 0.200
+ALENGTH = 6.000
+AMOTORED = 1
+AANGULARVELOCITY = 2.000
+ADIRECTION = 1
+
+ANAME = AXLE2
+ARADIUS = 1.000
+AAXIS = 2
+APOSITION = -3.000 0.000 0.000
+ACOLOR = 0.800 0.500 0.200
+ALENGTH = 12.000
+AMOTORED = 0
+
+ANAME = AXLE3
+ARADIUS = 1.000
+AAXIS = 2
+APOSITION = 1.000 0.000 0.000
+ACOLOR = 0.800 0.500 0.200
+ALENGTH = 6.000
+AMOTORED = 0
+
+ANAME = AXLE4
+ARADIUS = 1.000
+AAXIS = 2
+APOSITION = 8.000 0.000 0.000
+ACOLOR = 0.800 0.500 0.200
+ALENGTH = 18.000
+AMOTORED = 0
+
+ANAME = AXLE5
+ARADIUS = 1.000
+AAXIS = 1
+APOSITION = 8.000 -8.200 -7.400
+ACOLOR = 0.800 0.500 0.200
+ALENGTH = 12.000
+AMOTORED = 0
+
+GNAME = GEAR1
+GTYPE = NORMAL
+GRADIUS = 2.200
+GWIDTH = 3.000
+GTEETH = 40
+GTOOTHDEPTH = 0.500
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE1
+GPOSITION = 0.000
+
+GNAME = GEAR2
+GTYPE = NORMAL
+GRADIUS = 2.200
+GWIDTH = 3.000
+GTEETH = 30
+GTOOTHDEPTH = 0.500
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE2
+GPOSITION = 0.000
+
+GNAME = GEAR3
+GTYPE = NORMAL
+GRADIUS = 2.200
+GWIDTH = 3.000
+GTEETH = 20
+GTOOTHDEPTH = 0.500
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE3
+GPOSITION = 0.000
+
+GNAME = GEAR4
+GTYPE = NORMAL
+GRADIUS = 1.700
+GWIDTH = 1.000
+GTEETH = 20
+GTOOTHDEPTH = 0.500
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE2
+GPOSITION = 5.000
+
+GNAME = GEAR5
+GTYPE = NORMAL
+GRADIUS = 3.000
+GWIDTH = 1.000
+GTEETH = 20
+GTOOTHDEPTH = 0.500
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE4
+GPOSITION = 5.000
+
+GNAME = GEAR6
+GTYPE = BEVEL
+GFACE = 0
+GRADIUS = 4.000
+GWIDTH = 1.000
+GTEETH = 20
+GTOOTHDEPTH = 1.700
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE4
+GPOSITION = -4.000
+
+GNAME = GEAR7
+GTYPE = BEVEL
+GFACE = 0
+GRADIUS = 4.000
+GWIDTH = 1.000
+GTEETH = 20
+GTOOTHDEPTH = 1.700
+GCOLOR = 0.500 0.500 0.500
+GAXLE = AXLE5
+GPOSITION = 5.000
+
+BELTNAME = BELT1
+GEAR1NAME = GEAR5
+GEAR2NAME = GEAR4

progs/demos/gloss.c

@@ -1,4 +1,4 @@
-/* $Id: gloss.c,v 1.3 1999/10/26 17:08:31 brianp Exp $ */
+/* $Id: gloss.c,v 1.4.4.1 2000/08/29 21:17:25 brianp Exp $ */
 
 /*
  * Specular reflection demo.  The specular highlight is modulated by
@@ -46,7 +46,7 @@ static GLfloat DXrot = 1.0, DYrot = 2.5;
 static GLfloat Black[4] = { 0, 0, 0, 0 };
 static GLfloat White[4] = { 1, 1, 1, 1 };
 static GLfloat Diffuse[4] = { .3, .3, 1.0, 1.0 };  /* blue */
-static GLfloat Shininess = 15;
+static GLfloat Shininess = 6;
 
 static GLuint BaseTexture, SpecularTexture;
 static GLboolean DoSpecTexture = GL_TRUE;
@@ -245,7 +245,7 @@ static void Init( int argc, char *argv[] )
 
       glMatrixMode(GL_TEXTURE);
       glLoadIdentity();
-      glScalef(8.0, 4.0, 2.0);
+      /*glScalef(8.0, 4.0, 2.0);*/
       glMatrixMode(GL_MODELVIEW);
 
       /* cylinder */
@@ -322,8 +322,14 @@ static void Init( int argc, char *argv[] )
    glBindTexture(GL_TEXTURE_2D, SpecularTexture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+#if 1
    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
    glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
+#else
+   glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
+   glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
+   glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_NV);
+#endif
    if (!LoadRGBMipmaps(SPECULAR_TEXTURE_FILE, GL_RGB)) {
       printf("Error: couldn't load texture image file %s\n", SPECULAR_TEXTURE_FILE);
       exit(1);

progs/demos/gltestperf.c

@@ -0,0 +1,580 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include <GL/glut.h>
+
+typedef struct
+{
+   char *name;
+   char *unit;
+   void (*init) (void);
+   int (*run) (int, int);
+   int type;
+   int numsize;
+   int size[10];
+}
+benchmark;
+
+static int frontbuffer = 1;
+
+/***************************************************************************/
+
+static void
+init_test01(void)
+{
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluOrtho2D(-0.5, 639.5, -0.5, 479.5);
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_FLAT);
+   glDisable(GL_DEPTH_TEST);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT);
+   glColor3f(1.0, 0.0, 0.0);
+}
+
+static int
+test01(int size, int num)
+{
+   int x, y;
+
+   glBegin(GL_POINTS);
+   for (y = 0; y < num; y++)
+      for (x = 0; x < 480; x++)
+	 glVertex2i(x, x);
+   glEnd();
+
+   return 480 * num;
+}
+
+/***************************************************************************/
+
+static void
+init_test02(void)
+{
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluOrtho2D(-0.5, 639.5, -0.5, 479.5);
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glDisable(GL_DEPTH_TEST);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT);
+}
+
+static int
+test02(int size, int num)
+{
+   int x, y;
+
+   glBegin(GL_LINES);
+   for (y = 0; y < num; y++)
+      for (x = 0; x < size; x++) {
+	 glColor3f(0.0, 1.0, y / (float) num);
+	 glVertex2i(0, size - 1);
+	 glColor3f(1.0, 0.0, x / (float) size);
+	 glVertex2i(x, x);
+      }
+   glEnd();
+
+   return num * size;
+}
+
+/***************************************************************************/
+
+static void
+init_test03(void)
+{
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, 1.0, -1000.0 * 480.0);
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+static int
+test03(int size, int num)
+{
+   int x, y, z;
+
+   glBegin(GL_TRIANGLES);
+   for (y = 0; y < num; y++)
+      for (x = 0; x < size; x += 5) {
+	 z = num * size - (y * size + x);
+	 glColor3f(0.0, 1.0, 0.0);
+	 glVertex3i(0, x, z);
+
+	 glColor3f(1.0, 0.0, x / (float) size);
+	 glVertex3i(size - 1 - x, 0, z);
+
+	 glColor3f(1.0, x / (float) size, 0.0);
+	 glVertex3i(x, size - 1 - x, z);
+      }
+   glEnd();
+
+   return size * num / 5;
+}
+
+/***************************************************************************/
+
+static void
+init_test04(void)
+{
+   int x, y;
+   GLubyte tex[128 * 128 * 3];
+   GLenum gluerr;
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, 1.0, -1000.0 * 480.0);
+
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+
+   glEnable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   for (y = 0; y < 128; y++)
+      for (x = 0; x < 128; x++) {
+	 tex[(x + y * 128) * 3 + 0] = ((x % (128 / 4)) < (128 / 8)) ? 255 : 0;
+	 tex[(x + y * 128) * 3 + 1] = ((y % (128 / 4)) < (128 / 8)) ? 255 : 0;
+	 tex[(x + y * 128) * 3 + 2] = x;
+      }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   if ((gluerr = gluBuild2DMipmaps(GL_TEXTURE_2D, 3, 128, 128, GL_RGB,
+				   GL_UNSIGNED_BYTE, (GLvoid *) (&tex[0])))) {
+      fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_NEAREST);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+   glEnable(GL_TEXTURE_2D);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+static int
+test04(int size, int num)
+{
+   int x, y, z;
+
+   glBegin(GL_TRIANGLES);
+   for (y = 0; y < num; y++)
+      for (x = 0; x < size; x += 5) {
+	 z = num * size - (y * size + x);
+	 glTexCoord2f(1.0, 1.0);
+	 glColor3f(1.0, 0.0, 0.0);
+	 glVertex3i(0, x, z);
+
+	 glTexCoord2f(0.0, 1.0);
+	 glColor3f(0.0, 1.0, 0.0);
+	 glVertex3i(size - 1 - x, 0, z);
+
+	 glTexCoord2f(1.0, 0.0);
+	 glColor3f(0.0, 0.0, 1.0);
+	 glVertex3i(x, size - 1 - x, z);
+      }
+   glEnd();
+
+   return num * size / 5;
+}
+
+/***************************************************************************/
+
+static void
+init_test05(void)
+{
+   int x, y;
+   GLubyte tex[128 * 128 * 3];
+   GLenum gluerr;
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+
+   glEnable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   for (y = 0; y < 128; y++)
+      for (x = 0; x < 128; x++) {
+	 tex[(x + y * 128) * 3 + 0] = ((x % (128 / 4)) < (128 / 8)) ? 255 : 0;
+	 tex[(x + y * 128) * 3 + 1] = ((y % (128 / 4)) < (128 / 8)) ? 255 : 0;
+	 tex[(x + y * 128) * 3 + 2] = x;
+      }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   if ((gluerr = gluBuild2DMipmaps(GL_TEXTURE_2D, 3, 128, 128, GL_RGB,
+				   GL_UNSIGNED_BYTE, (GLvoid *) (&tex[0])))) {
+      fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_NEAREST);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+   glEnable(GL_TEXTURE_2D);
+
+   glDepthFunc(GL_ALWAYS);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+static int
+test05(int size, int num)
+{
+   int y;
+   float v0[3], v1[3], v2[3], v3[3];
+   float cv0[3], cv1[3], cv2[3], cv3[3];
+   float tv0[3], tv1[3], tv2[3], tv3[3];
+
+   v0[0] = 320 - size / 2;
+   v0[1] = 240 - size / 2;
+   v0[2] = 0.0;
+   v1[0] = 320 + size / 2;
+   v1[1] = 240 - size / 2;
+   v1[2] = 0.0;
+   v2[0] = 320 - size / 2;
+   v2[1] = 240 + size / 2;
+   v2[2] = 0.0;
+   v3[0] = 320 + size / 2;
+   v3[1] = 240 + size / 2;
+   v3[2] = 0.0;
+   cv0[0] = 1.0;
+   cv0[1] = 0.0;
+   cv0[2] = 0.0;
+   cv1[0] = 1.0;
+   cv1[1] = 1.0;
+   cv1[2] = 0.0;
+   cv2[0] = 1.0;
+   cv2[1] = 0.0;
+   cv2[2] = 1.0;
+   cv3[0] = 1.0;
+   cv3[1] = 1.0;
+   cv3[2] = 1.0;
+   tv0[0] = 0.0;
+   tv0[1] = 0.0;
+   tv0[2] = 0.0;
+   tv1[0] = 1.0;
+   tv1[1] = 0.0;
+   tv1[2] = 0.0;
+   tv2[0] = 0.0;
+   tv2[1] = 1.0;
+   tv2[2] = 0.0;
+   tv3[0] = 1.0;
+   tv3[1] = 1.0;
+   tv3[2] = 0.0;
+
+   glBegin(GL_TRIANGLE_STRIP);
+   for (y = 0; y < num; y++) {
+      glColor3fv(cv0);
+      glTexCoord2fv(tv0);
+      glVertex3fv(v0);
+
+      glColor3fv(cv1);
+      glTexCoord2fv(tv1);
+      glVertex3fv(v1);
+
+      glColor3fv(cv2);
+      glTexCoord2fv(tv2);
+      glVertex3fv(v2);
+
+      glColor3fv(cv3);
+      glTexCoord2fv(tv3);
+      glVertex3fv(v3);
+   }
+   glEnd();
+
+   return 4 * num - 2;
+}
+
+/***************************************************************************/
+
+static void
+init_test06(void)
+{
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluOrtho2D(-0.5, 639.5, -0.5, 479.5);
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+
+   glClearColor(0.0, 0.1, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+static int
+test06(int size, int num)
+{
+   int y;
+
+   for (y = 0; y < num; y++) {
+      glClearColor(y / (float) num, 0.1, 1.0, 0.0);
+      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   }
+
+   return num;
+}
+
+/***************************************************************************/
+
+#define BMARKS_TIME 5.0
+
+#define NUM_BMARKS 6
+
+/* 554 ~= sqrt(640*480) */
+
+static benchmark bmarks[NUM_BMARKS] = {
+   {"Simple Points", "Pnts", init_test01, test01, 0, 0,
+    {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
+   {"Smooth Lines", "Lins", init_test02, test02, 1, 5,
+    {480, 250, 100, 50, 25, 0, 0, 0, 0, 0}},
+   {"ZSmooth Triangles", "Tris", init_test03, test03, 1, 5,
+    {480, 250, 100, 50, 25, 0, 0, 0, 0, 0}},
+   {"ZSmooth Tex Blend Triangles", "Tris", init_test04, test04, 1, 5,
+    {480, 250, 100, 50, 25, 0, 0, 0, 0, 0}},
+   {"ZSmooth Tex Blend TMesh Triangles", "Tris", init_test05, test05, 2, 8,
+    {400, 250, 100, 50, 25, 10, 5, 2, 0, 0}},
+   {"Color/Depth Buffer Clears", "Clrs", init_test06, test06, 3, 0,
+    {554, 0, 0, 0, 0, 0, 0, 0, 0, 0}}
+};
+
+/***************************************************************************/
+
+static void
+dotest0param(benchmark * bmark)
+{
+   float stime, etime, dtime, tottime, maxtime, mintime;
+   int num, numelem, calibnum, j;
+
+   glPushAttrib(GL_ALL_ATTRIB_BITS);
+   bmark->init();
+
+   stime = glutGet(GLUT_ELAPSED_TIME);
+
+   dtime = 0.0;
+   calibnum = 0;
+   while (dtime < 2.0) {
+      bmark->run(0, 1);
+      glFinish();
+      etime = glutGet(GLUT_ELAPSED_TIME);
+      dtime = (etime - stime) / 1000.0;
+      calibnum++;
+   }
+   glPopAttrib();
+
+   fprintf(stderr, "Elapsed time for the calibration test (%d): %f\n",
+	   calibnum, dtime);
+
+   num = (int) ((BMARKS_TIME / dtime) * calibnum);
+
+   if (num < 1)
+      num = 1;
+
+   fprintf(stderr, "Selected number of benchmark iterations: %d\n", num);
+
+   mintime = HUGE_VAL;
+   maxtime = -HUGE_VAL;
+
+   for (tottime = 0.0, j = 0; j < 5; j++) {
+      glPushAttrib(GL_ALL_ATTRIB_BITS);
+      bmark->init();
+
+      stime = glutGet(GLUT_ELAPSED_TIME);
+      numelem = bmark->run(0, num);
+      glFinish();
+      etime = glutGet(GLUT_ELAPSED_TIME);
+
+      glPopAttrib();
+
+      dtime = (etime - stime) / 1000.0;
+      tottime += dtime;
+
+      fprintf(stderr, "Elapsed time for run %d: %f\n", j, dtime);
+
+      if (dtime < mintime)
+	 mintime = dtime;
+      if (dtime > maxtime)
+	 maxtime = dtime;
+   }
+
+   tottime -= mintime + maxtime;
+
+   fprintf(stdout, "%s\n%f %s/sec", bmark->name, numelem / (tottime / 3.0),
+	   bmark->unit);
+
+   if (bmark->type == 3)
+      fprintf(stdout, ", MPixel Fill/sec: %f\n\n",
+	      (numelem * bmark->size[0] * (float) bmark->size[0]) /
+	      (1000000.0 * tottime / 3.0));
+   else
+      fprintf(stdout, "\n\n");
+}
+
+/***************************************************************************/
+
+static void
+dotest1param(benchmark * bmark)
+{
+   float stime, etime, dtime, tottime, maxtime, mintime;
+   int num, numelem, calibnum, j, k;
+
+   fprintf(stdout, "%s\n", bmark->name);
+
+   for (j = 0; j < bmark->numsize; j++) {
+      fprintf(stderr, "Current size: %d\n", bmark->size[j]);
+
+      glPushAttrib(GL_ALL_ATTRIB_BITS);
+      bmark->init();
+
+      stime = glutGet(GLUT_ELAPSED_TIME);
+
+      dtime = 0.0;
+      calibnum = 0;
+      while (dtime < 2.0) {
+	 bmark->run(bmark->size[j], 1);
+	 glFinish();
+	 etime = glutGet(GLUT_ELAPSED_TIME);
+	 dtime = (etime - stime) / 1000.0;
+	 calibnum++;
+      }
+      glPopAttrib();
+
+      fprintf(stderr, "Elapsed time for the calibration test (%d): %f\n",
+	      calibnum, dtime);
+
+      num = (int) ((BMARKS_TIME / dtime) * calibnum);
+
+      if (num < 1)
+	 num = 1;
+
+      fprintf(stderr, "Selected number of benchmark iterations: %d\n", num);
+
+      mintime = HUGE_VAL;
+      maxtime = -HUGE_VAL;
+
+      for (numelem = 1, tottime = 0.0, k = 0; k < 5; k++) {
+	 glPushAttrib(GL_ALL_ATTRIB_BITS);
+	 bmark->init();
+
+	 stime = glutGet(GLUT_ELAPSED_TIME);
+	 numelem = bmark->run(bmark->size[j], num);
+	 glFinish();
+	 etime = glutGet(GLUT_ELAPSED_TIME);
+
+	 glPopAttrib();
+
+	 dtime = (etime - stime) / 1000.0;
+	 tottime += dtime;
+
+	 fprintf(stderr, "Elapsed time for run %d: %f\n", k, dtime);
+
+	 if (dtime < mintime)
+	    mintime = dtime;
+	 if (dtime > maxtime)
+	    maxtime = dtime;
+      }
+
+      tottime -= mintime + maxtime;
+
+      fprintf(stdout, "SIZE=%03d => %f %s/sec", bmark->size[j],
+	      numelem / (tottime / 3.0), bmark->unit);
+      if (bmark->type == 2)
+	 fprintf(stdout, ", MPixel Fill/sec: %f\n",
+		 (numelem * bmark->size[j] * bmark->size[j] / 2) /
+		 (1000000.0 * tottime / 3.0));
+      else
+	 fprintf(stdout, "\n");
+   }
+
+   fprintf(stdout, "\n\n");
+}
+
+/***************************************************************************/
+
+static void
+display(void)
+{
+   int i;
+
+   if (frontbuffer)
+      glDrawBuffer(GL_FRONT);
+   else
+      glDrawBuffer(GL_BACK);
+
+   for (i = 0; i < NUM_BMARKS; i++) {
+      fprintf(stderr, "Benchmark: %d\n", i);
+
+      switch (bmarks[i].type) {
+      case 0:
+      case 3:
+	 dotest0param(&bmarks[i]);
+	 break;
+      case 1:
+      case 2:
+	 dotest1param(&bmarks[i]);
+	 break;
+      }
+   }
+
+   exit(0);
+}
+
+int
+main(int ac, char **av)
+{
+   fprintf(stderr, "GLTest v1.0\nWritten by David Bucciarelli\n");
+
+   if (ac == 2)
+      frontbuffer = 0;
+
+   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(640, 480);
+   glutCreateWindow("OpenGL/Mesa Performances");
+   glutDisplayFunc(display);
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/glutfx.c

@@ -1,4 +1,4 @@
-/* $Id: glutfx.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: glutfx.c,v 1.2 2000/06/27 17:04:43 brianp Exp $ */
 
 /*
  * Example of how one might use GLUT with the 3Dfx driver in full-screen mode.
@@ -16,8 +16,11 @@
 
 /*
  * $Log: glutfx.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.2  2000/06/27 17:04:43  brianp
+ * fixed compiler warnings
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.2  1999/03/28 18:18:33  brianp
  * minor clean-up
@@ -164,7 +167,6 @@ int main( int argc, char *argv[] )
    printf("NOTE: if you've got 3Dfx VooDoo hardware you must run this");
    printf(" program as root.\n\n");
    printf("Move the mouse.  Press ESC to exit.\n\n");
-   sleep(2);
 #endif
 
    /* Tell Mesa GLX to use 3Dfx driver in fullscreen mode. */

progs/demos/ipers.c

@@ -0,0 +1,704 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#include <mmsystem.h>
+#endif
+
+#include <GL/glut.h>
+
+#include "../util/readtex.c"
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+static int WIDTH = 640;
+static int HEIGHT = 480;
+
+#define MAX_LOD 9
+
+#define TEX_SKY_WIDTH 256
+#define TEX_SKY_HEIGHT TEX_SKY_WIDTH
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+#define FROM_NONE   0
+#define FROM_DOWN   1
+#define FROM_UP     2
+#define FROM_LEFT   3
+#define FROM_RIGHT  4
+#define FROM_FRONT  5
+#define FROM_BACK   6
+
+static int win = 0;
+
+static float obs[3] = { 3.8, 0.0, 0.0 };
+static float dir[3];
+static float v = 0.0;
+static float alpha = -90.0;
+static float beta = 90.0;
+
+static int fog = 1;
+static int bfcull = 1;
+static int usetex = 1;
+static int help = 1;
+static int poutline = 0;
+static int normext = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+static int LODbias = 3;
+static int maxdepth = MAX_LOD;
+
+static unsigned int totpoly = 0;
+
+static GLuint t1id, t2id;
+static GLuint skydlist, LODdlist[MAX_LOD], LODnumpoly[MAX_LOD];
+
+static void
+initlight(void)
+{
+   GLfloat lspec[4] = { 1.0, 1.0, 1.0, 1.0 };
+   static GLfloat lightpos[4] = { 30, 15.0, 30.0, 1.0 };
+
+   glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
+   glLightfv(GL_LIGHT0, GL_SPECULAR, lspec);
+
+   glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 32.0);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, lspec);
+}
+
+static void
+initdlists(void)
+{
+   static int slicetable[MAX_LOD][2] = {
+      {21, 10},
+      {18, 9},
+      {15, 8},
+      {12, 7},
+      {9, 6},
+      {7, 5},
+      {5, 4},
+      {4, 3},
+      {3, 2}
+   };
+   GLUquadricObj *obj;
+   int i, xslices, yslices;
+
+   obj = gluNewQuadric();
+
+   skydlist = glGenLists(1);
+   glNewList(skydlist, GL_COMPILE);
+   glBindTexture(GL_TEXTURE_2D, t2id);
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+   glColor3f(1.0f, 1.0f, 1.0f);
+
+   gluQuadricDrawStyle(obj, GLU_FILL);
+   gluQuadricNormals(obj, GLU_NONE);
+   gluQuadricTexture(obj, GL_TRUE);
+   gluQuadricOrientation(obj, GLU_INSIDE);
+   gluSphere(obj, 40.0f, 18, 9);
+
+   glEndList();
+
+   for (i = 0; i < MAX_LOD; i++) {
+      LODdlist[i] = glGenLists(1);
+      glNewList(LODdlist[i], GL_COMPILE);
+
+      gluQuadricDrawStyle(obj, GLU_FILL);
+      gluQuadricNormals(obj, GLU_SMOOTH);
+      gluQuadricTexture(obj, GL_TRUE);
+      gluQuadricOrientation(obj, GLU_OUTSIDE);
+      xslices = slicetable[i][0];
+      yslices = slicetable[i][1];
+      gluSphere(obj, 1.0f, xslices, yslices);
+      LODnumpoly[i] = xslices * (yslices - 2) + 2 * (xslices - 1);
+
+      glEndList();
+   }
+}
+
+static void
+inittextures(void)
+{
+   GLubyte tsky[TEX_SKY_HEIGHT][TEX_SKY_WIDTH][3];
+   GLuint x, y;
+   GLfloat fact;
+   GLenum gluerr;
+
+   /* Brick */
+
+   glGenTextures(1, &t1id);
+   glBindTexture(GL_TEXTURE_2D, t1id);
+
+   if (!LoadRGBMipmaps("../images/bw.rgb", 3)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   /* Sky */
+
+   glGenTextures(1, &t2id);
+   glBindTexture(GL_TEXTURE_2D, t2id);
+
+   for (y = 0; y < TEX_SKY_HEIGHT; y++)
+      for (x = 0; x < TEX_SKY_WIDTH; x++)
+	 if (y < TEX_SKY_HEIGHT / 2) {
+	    fact = y / (GLfloat) (TEX_SKY_HEIGHT / 2);
+	    tsky[y][x][0] =
+	       (GLubyte) (255.0f * (0.1f * fact + 0.3f * (1.0f - fact)));
+	    tsky[y][x][1] =
+	       (GLubyte) (255.0f * (0.2f * fact + 1.0f * (1.0f - fact)));
+	    tsky[y][x][2] = 255;
+	 }
+	 else {
+	    tsky[y][x][0] = tsky[TEX_SKY_HEIGHT - y - 1][x][0];
+	    tsky[y][x][1] = tsky[TEX_SKY_HEIGHT - y - 1][x][1];
+	    tsky[y][x][2] = 255;
+	 }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   if (
+       (gluerr =
+	gluBuild2DMipmaps(GL_TEXTURE_2D, 3, TEX_SKY_WIDTH, TEX_SKY_HEIGHT,
+			  GL_RGB, GL_UNSIGNED_BYTE, (GLvoid *) (tsky)))) {
+      fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+}
+
+static float
+gettime(void)
+{
+   static clock_t told = 0;
+   clock_t tnew, ris;
+
+   tnew = clock();
+
+   ris = tnew - told;
+
+   told = tnew;
+
+   return (ris / (float) CLOCKS_PER_SEC);
+}
+
+static void
+calcposobs(void)
+{
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[2] = cos(beta * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+}
+
+static void
+special(int k, int x, int y)
+{
+   switch (k) {
+   case GLUT_KEY_LEFT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+   switch (k) {
+   case 27:
+      exit(0);
+      break;
+
+   case 'a':
+      v += 0.01;
+      break;
+   case 'z':
+      v -= 0.01;
+      break;
+
+#ifdef XMESA
+   case ' ':
+      fullscreen = (!fullscreen);
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      break;
+#endif
+
+   case '+':
+      LODbias--;
+      break;
+   case '-':
+      LODbias++;
+      break;
+   case 'j':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+   case 't':
+      usetex = (!usetex);
+      break;
+   case 'n':
+      normext = (!normext);
+      break;
+   case 'b':
+      if (bfcull) {
+	 glDisable(GL_CULL_FACE);
+	 bfcull = 0;
+      }
+      else {
+	 glEnable(GL_CULL_FACE);
+	 bfcull = 1;
+      }
+      break;
+   case 'p':
+      if (poutline) {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+	 poutline = 0;
+	 usetex = 1;
+      }
+      else {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+	 poutline = 1;
+	 usetex = 0;
+      }
+      break;
+   }
+}
+
+static void
+reshape(int w, int h)
+{
+   WIDTH = w;
+   HEIGHT = h;
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(90.0, w / (float) h, 0.8, 100.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glViewport(0, 0, w, h);
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+   glEnable(GL_BLEND);
+   glColor4f(0.5, 0.5, 0.5, 0.5);
+   glRecti(40, 40, 600, 440);
+   glDisable(GL_BLEND);
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Toggle Help");
+   glRasterPos2i(60, 360);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Toggle Textures");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Toggle Fog");
+   glRasterPos2i(60, 300);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "b - Toggle Back face culling");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 240);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+   glRasterPos2i(60, 180);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "p - Toggle Wire frame");
+   glRasterPos2i(60, 150);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+	       "b - Toggle GL_EXT_rescale_normal extension");
+   glRasterPos2i(60, 120);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+	       "+/- - Increase/decrease the Object maximum LOD");
+
+   glRasterPos2i(60, 90);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "j - Toggle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "(No Joystick control available)");
+}
+
+static void
+dojoy(void)
+{
+#ifdef _WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha -=
+	       2.0 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.0 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.01;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.01;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+drawipers(int depth, int from)
+{
+   int lod;
+
+   if (depth == maxdepth)
+      return;
+
+   lod = depth + LODbias;
+   if (lod < 0)
+      lod = 0;
+   if (lod >= MAX_LOD)
+      return;
+
+   switch (from) {
+   case FROM_NONE:
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_LEFT);
+      drawipers(depth, FROM_RIGHT);
+      break;
+   case FROM_FRONT:
+      glPushMatrix();
+      glTranslatef(0.0f, -1.5f, 0.0f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_LEFT);
+      drawipers(depth, FROM_RIGHT);
+      glPopMatrix();
+      break;
+   case FROM_BACK:
+      glPushMatrix();
+      glTranslatef(0.0f, 1.5f, 0.0f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_LEFT);
+      drawipers(depth, FROM_RIGHT);
+      glPopMatrix();
+      break;
+   case FROM_LEFT:
+      glPushMatrix();
+      glTranslatef(-1.5f, 0.0f, 0.0f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_LEFT);
+      glPopMatrix();
+      break;
+   case FROM_RIGHT:
+      glPushMatrix();
+      glTranslatef(1.5f, 0.0f, 0.0f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_RIGHT);
+      glPopMatrix();
+      break;
+   case FROM_DOWN:
+      glPushMatrix();
+      glTranslatef(0.0f, 0.0f, 1.5f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_DOWN);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_LEFT);
+      drawipers(depth, FROM_RIGHT);
+      glPopMatrix();
+      break;
+   case FROM_UP:
+      glPushMatrix();
+      glTranslatef(0.0f, 0.0f, -1.5f);
+      glScalef(0.5f, 0.5f, 0.5f);
+
+      glCallList(LODdlist[lod]);
+
+      depth++;
+      drawipers(depth, FROM_UP);
+      drawipers(depth, FROM_FRONT);
+      drawipers(depth, FROM_BACK);
+      drawipers(depth, FROM_LEFT);
+      drawipers(depth, FROM_RIGHT);
+      glPopMatrix();
+      break;
+   }
+
+   totpoly += LODnumpoly[lod];
+}
+
+static void
+draw(void)
+{
+   static int count = 0;
+   static char frbuf[80];
+   static GLfloat alpha = 0.0f;
+   static GLfloat beta = 0.0f;
+   float fr;
+
+   dojoy();
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   if (usetex)
+      glEnable(GL_TEXTURE_2D);
+   else
+      glDisable(GL_TEXTURE_2D);
+
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glPushMatrix();
+   calcposobs();
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 0.0, 1.0);
+
+   /* Scene */
+   glEnable(GL_DEPTH_TEST);
+
+   glShadeModel(GL_SMOOTH);
+   glBindTexture(GL_TEXTURE_2D, t1id);
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+   glColor3f(1.0f, 1.0f, 1.0f);
+   glEnable(GL_LIGHT0);
+   glEnable(GL_LIGHTING);
+
+   if (normext)
+      glEnable(GL_RESCALE_NORMAL_EXT);
+   else
+      glEnable(GL_NORMALIZE);
+
+   glPushMatrix();
+   glRotatef(alpha, 0.0f, 0.0f, 1.0f);
+   glRotatef(beta, 1.0f, 0.0f, 0.0f);
+   totpoly = 0;
+   drawipers(0, FROM_NONE);
+   glPopMatrix();
+
+   alpha += 0.5f;
+   beta += 0.3f;
+
+   glDisable(GL_LIGHTING);
+   glDisable(GL_LIGHT0);
+   glShadeModel(GL_FLAT);
+
+   if (normext)
+      glDisable(GL_RESCALE_NORMAL_EXT);
+   else
+      glDisable(GL_NORMALIZE);
+
+   glCallList(skydlist);
+
+   glPopMatrix();
+
+   /* Help Screen */
+
+   fr = gettime();
+   sprintf(frbuf,
+	   "Frame rate: %0.2f   LOD: %d   Tot. poly.: %d   Poly/sec: %.1f",
+	   1.0 / fr, LODbias, totpoly, totpoly / fr);
+
+   glDisable(GL_TEXTURE_2D);
+   glDisable(GL_FOG);
+   glShadeModel(GL_FLAT);
+   glDisable(GL_DEPTH_TEST);
+
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(350, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "IperS V1.0 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+   if (help)
+      printhelp();
+
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+   glMatrixMode(GL_MODELVIEW);
+
+   glutSwapBuffers();
+
+   count++;
+}
+
+int
+main(int ac, char **av)
+{
+   float fogcolor[4] = { 0.7, 0.7, 0.7, 1.0 };
+
+   fprintf(stderr,
+	   "IperS V1.0\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTH, HEIGHT);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+
+   if (!(win = glutCreateWindow("IperS"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      exit(-1);
+   }
+
+   reshape(WIDTH, HEIGHT);
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+   glEnable(GL_CULL_FACE);
+   glEnable(GL_TEXTURE_2D);
+
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP2);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+
+   glFogf(GL_FOG_DENSITY, 0.006);
+
+   glHint(GL_FOG_HINT, GL_NICEST);
+
+   inittextures();
+   initdlists();
+   initlight();
+
+   glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   calcposobs();
+
+   glutReshapeFunc(reshape);
+   glutDisplayFunc(draw);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+   glutIdleFunc(draw);
+
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/isosurf.c

@@ -1,4 +1,4 @@
-/* $Id: isosurf.c,v 1.4 1999/10/21 16:39:06 brianp Exp $ */
+/* $Id: isosurf.c,v 1.6 2000/06/27 17:04:43 brianp Exp $ */
 
 /*
  * Display an isosurface of 3-D wind speed volume.  
@@ -25,38 +25,12 @@
  * Other options are available via the popup menu.
  */
 
-/*
- * $Log: isosurf.c,v $
- * Revision 1.4  1999/10/21 16:39:06  brianp
- * added -info command line option
- *
- * Revision 1.3  1999/09/08 22:14:31  brianp
- * minor changes. always call compactify_arrays()
- *
- * Revision 1.2  1999/09/03 14:56:40  keithw
- * Fog, displaylist and zoom operations
- *
- * Revision 3.4  1999/04/24 01:10:47  keithw
- * clip planes, materials
- *
- * Revision 3.3  1999/03/31 19:42:14  keithw
- * support for cva
- *
- * Revision 3.1  1998/11/01 20:30:20  brianp
- * added benchmark feature (b key)
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
-
-
-
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#define GL_GLEXT_LEGACY
 #include "GL/glut.h"
 
 #include "../util/readtex.c"   /* I know, this is a hack.  KW: me too. */
@@ -87,6 +61,9 @@
 #define NO_FOG              0x400000
 #define QUIT                0x800000
 #define DISPLAYLIST         0x1000000
+#define GLINFO              0x2000000
+#define STIPPLE             0x4000000
+#define NO_STIPPLE          0x8000000
 
 #define LIGHT_MASK  (LIT|UNLIT)
 #define TEXTURE_MASK (TEXTURE|NO_TEXTURE)
@@ -99,6 +76,7 @@
 #define CLIP_MASK (USER_CLIP|NO_USER_CLIP)
 #define SHADE_MASK (SHADE_SMOOTH|SHADE_FLAT)
 #define FOG_MASK (FOG|NO_FOG)
+#define STIPPLE_MASK (STIPPLE|NO_STIPPLE)
 
 #define MAXVERTS 10000
 static float data[MAXVERTS][6];
@@ -118,6 +96,20 @@ static GLuint surf1;
 
 static GLboolean PrintInfo = GL_FALSE;
 
+
+static GLubyte halftone[] = {
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA,
+   0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA,
+   0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA,
+   0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA,
+   0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA,
+   0x55, 0x55, 0x55, 0x55, 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+   0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55};
+
 /* forward decl */
 int BuildList( int mode );
 
@@ -535,6 +527,8 @@ static void InitMaterials(void)
     glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_mat_shininess);
     glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_mat_specular);
     glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, front_mat_diffuse);
+
+    glPolygonStipple (halftone);
 }
 
 
@@ -552,6 +546,13 @@ static void ModeMenu(int m)
    if (m==QUIT) 
       exit(0);
 
+   if (m==GLINFO) {
+      printf("GL_VERSION: %s\n", (char *) glGetString(GL_VERSION));
+      printf("GL_EXTENSIONS: %s\n", (char *) glGetString(GL_EXTENSIONS));
+      printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
+      return;
+   }
+
    if (CHANGED(state, m, FILTER_MASK)) {
       if (m & LINEAR_FILTER) {
 	 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -615,6 +616,19 @@ static void ModeMenu(int m)
       }
    }
 
+   if (CHANGED(state, m, STIPPLE_MASK)) {
+      if (m & STIPPLE) 
+      {
+	 glEnable(GL_POLYGON_STIPPLE);
+	 printf("STIPPLE enable\n");
+      } 
+      else 
+      {
+	 glDisable(GL_POLYGON_STIPPLE);
+	 printf("STIPPLE disable\n");
+      }
+   }
+
 #ifdef GL_EXT_vertex_array
    if (CHANGED(state, m, (COMPILED_MASK|RENDER_STYLE_MASK|PRIMITIVE_MASK))) 
    {
@@ -631,10 +645,12 @@ static void ModeMenu(int m)
 			     &compressed_data[0][3]);
       }
 #ifdef GL_EXT_compiled_vertex_array
-      if (m & COMPILED) {
-	 glLockArraysEXT( 0, numuniq );
-      } else {
-	 glUnlockArraysEXT();
+      if (allowed & COMPILED) {
+	 if (m & COMPILED) {
+	    glLockArraysEXT( 0, numuniq );
+	 } else {
+	    glUnlockArraysEXT();
+	 }
       }
 #endif
    }
@@ -657,7 +673,7 @@ static void Init(int argc, char *argv[])
 {
    GLfloat fogColor[4] = {0.5,1.0,0.5,1.0};
 
-   glClearColor(0.0, 0.0, 0.0, 0.0);
+   glClearColor(0.0, 0.0, 1.0, 0.0);
    glEnable( GL_DEPTH_TEST );
    glEnable( GL_VERTEX_ARRAY_EXT );
    glEnable( GL_NORMAL_ARRAY_EXT );
@@ -674,7 +690,7 @@ static void Init(int argc, char *argv[])
 
    set_matrix();
 
-   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
 
    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
@@ -706,6 +722,7 @@ static void Init(int argc, char *argv[])
 	    NO_USER_CLIP|
 	    NO_MATERIALS|
 	    NO_FOG|
+	    NO_STIPPLE|
 	    GLVERTEX);
 
    if (PrintInfo) {
@@ -738,6 +755,9 @@ static void Key( unsigned char key, int x, int y )
    case 's':
       ModeMenu((state ^ SHADE_MASK) & SHADE_MASK);
       break;
+   case 't':
+      ModeMenu((state ^ STIPPLE_MASK) & STIPPLE_MASK);
+      break;
    case 'l':
       ModeMenu((state ^ LIGHT_MASK) & LIGHT_MASK);
       break;
@@ -747,6 +767,13 @@ static void Key( unsigned char key, int x, int y )
    case 'c':
       ModeMenu((state ^ CLIP_MASK) & CLIP_MASK);
       break;
+   case 'v':
+      if (allowed&COMPILED)
+	 ModeMenu(COMPILED|DRAW_ARRAYS|TRIANGLES);
+      break;
+   case 'V':
+      ModeMenu(IMMEDIATE|GLVERTEX|STRIPS);
+      break;
    case 'b':
       Benchmark(5.0, 0);
       break;
@@ -878,6 +905,8 @@ int main(int argc, char **argv)
    ModeMenu(arg_mode);
    
    glutCreateMenu(ModeMenu);
+   glutAddMenuEntry("GL info",               GLINFO);   
+   glutAddMenuEntry("", 0);   
    glutAddMenuEntry("Lit",                   LIT|NO_TEXTURE|NO_REFLECT);
    glutAddMenuEntry("Unlit",                 UNLIT|NO_TEXTURE|NO_REFLECT);
 /*    glutAddMenuEntry("Textured", TEXTURE); */
@@ -889,6 +918,9 @@ int main(int argc, char **argv)
    glutAddMenuEntry("Fog",                   FOG);
    glutAddMenuEntry("No Fog",                NO_FOG);
    glutAddMenuEntry("", 0);   
+   glutAddMenuEntry("Stipple",               STIPPLE);
+   glutAddMenuEntry("No Stipple",            NO_STIPPLE);
+   glutAddMenuEntry("", 0);   
    glutAddMenuEntry("Point Filtered",        POINT_FILTER);
    glutAddMenuEntry("Linear Filtered",       LINEAR_FILTER);
    glutAddMenuEntry("", 0);   
@@ -928,6 +960,7 @@ int main(int argc, char **argv)
    glutKeyboardFunc(Key);
    glutSpecialFunc(SpecialKey);
    glutDisplayFunc(Display);
+
    glutMainLoop();
    return 0;
 }

progs/demos/lodbias.c

@@ -0,0 +1,229 @@
+/*
+ * GL_EXT_texture_lod_bias demo
+ *
+ * Thanks to Michael Vance for implementing this extension in Mesa.
+ *
+ * Brian Paul
+ * 20 March 2000
+ *
+ * Copyright (C) 2000  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.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <GL/glut.h>
+#include <GL/glext.h>
+
+#include "../util/readtex.c"   /* I know, this is a hack. */
+
+#define TEXTURE_FILE "../images/girl.rgb"
+
+static GLfloat Xrot = 0, Yrot = -30, Zrot = 0;
+static GLboolean Anim = GL_TRUE;
+static GLint Bias = 0, BiasStepSign = +1; /* ints avoid fp precision problem */
+static GLint BiasMin = -200, BiasMax = 500;
+
+
+
+static void
+PrintString(const char *s)
+{
+   while (*s) {
+      glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
+      s++;
+   }
+}
+
+static void Idle( void )
+{
+   static int lastTime = 0;
+   int time = glutGet(GLUT_ELAPSED_TIME);
+   int step;
+
+   if (lastTime == 0)
+      lastTime = time;
+   else if (time - lastTime < 10)
+      return;
+
+   step = (time - lastTime) / 10 * BiasStepSign;
+   lastTime = time;
+
+   Bias += step;
+   if (Bias < BiasMin) {
+      Bias = BiasMin;
+      BiasStepSign = +1;
+   }
+   else if (Bias > BiasMax) {
+      Bias = BiasMax;
+      BiasStepSign = -1;
+   }
+
+   glutPostRedisplay();
+}
+
+
+static void Display( void )
+{
+   char str[100];
+
+   glClear( GL_COLOR_BUFFER_BIT );
+
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1, 1, -1, 1, -1, 1);
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+   
+   glDisable(GL_TEXTURE_2D);
+   glColor3f(1,1,1);
+   glRasterPos3f(-0.9, -0.9, 0.0);
+   sprintf(str, "Texture LOD Bias = %4.1f", Bias * 0.01);
+   PrintString(str);
+
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+   glTranslatef( 0.0, 0.0, -8.0 );
+
+   glPushMatrix();
+   glRotatef(Xrot, 1, 0, 0);
+   glRotatef(Yrot, 0, 1, 0);
+   glRotatef(Zrot, 0, 0, 1);
+
+   glEnable(GL_TEXTURE_2D);
+   glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, 0.01 * Bias);
+
+   glBegin(GL_POLYGON);
+   glTexCoord2f(0, 0);  glVertex2f(-1, -1);
+   glTexCoord2f(2, 0);  glVertex2f( 1, -1);
+   glTexCoord2f(2, 2);  glVertex2f( 1,  1);
+   glTexCoord2f(0, 2);  glVertex2f(-1,  1);
+   glEnd();
+
+   glPopMatrix();
+
+   glutSwapBuffers();
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+   const GLfloat step = 3.0;
+   (void) x;
+   (void) y;
+   switch (key) {
+      case 'a':
+         Anim = !Anim;
+         if (Anim)
+            glutIdleFunc(Idle);
+         else
+            glutIdleFunc(NULL);
+         break;
+      case 'z':
+         Zrot -= step;
+         break;
+      case 'Z':
+         Zrot += step;
+         break;
+      case 'b':
+         Bias -= 10;
+         break;
+      case 'B':
+         Bias += 10;
+         break;
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void SpecialKey( int key, int x, int y )
+{
+   const GLfloat step = 3.0;
+   (void) x;
+   (void) y;
+   switch (key) {
+      case GLUT_KEY_UP:
+         Xrot -= step;
+         break;
+      case GLUT_KEY_DOWN:
+         Xrot += step;
+         break;
+      case GLUT_KEY_LEFT:
+         Yrot -= step;
+         break;
+      case GLUT_KEY_RIGHT:
+         Yrot += step;
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void Init( void )
+{
+   const char *exten = (const char *) glGetString(GL_EXTENSIONS);
+   if (!strstr(exten, "GL_EXT_texture_lod_bias")) {
+      printf("Sorry, GL_EXT_texture_lod_bias not supported by this renderer.\n");
+      exit(1);
+   }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
+      printf("Error: could not load texture image %s\n", TEXTURE_FILE);
+      exit(1);
+   }
+
+   /* mipmapping required for this extension */
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+}
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 350, 350 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutSpecialFunc( SpecialKey );
+   glutDisplayFunc( Display );
+   if (Anim)
+      glutIdleFunc(Idle);
+   Init();
+   glutMainLoop();
+   return 0;
+}

progs/demos/morph3d.c

@@ -1,7 +1,13 @@
-/* $Id: morph3d.c,v 1.2 1999/09/17 12:27:01 brianp Exp $ */
+/* $Id: morph3d.c,v 1.4 2000/06/27 17:04:43 brianp Exp $ */
 
 /*
  * $Log: morph3d.c,v $
+ * Revision 1.4  2000/06/27 17:04:43  brianp
+ * fixed compiler warnings
+ *
+ * Revision 1.3  1999/12/15 13:00:45  brianp
+ * moved #define to column 0
+ *
  * Revision 1.2  1999/09/17 12:27:01  brianp
  * silenced some warnings
  *
@@ -498,7 +504,7 @@ static void draw_dodeca( void )
 {
   GLuint list;
 
-  #define TAU ((SQRT5+1)/2)
+#define TAU ((SQRT5+1)/2)
 
   list = glGenLists( 1 );
   glNewList( list, GL_COMPILE );
@@ -827,7 +833,7 @@ static void pinit(void)
 
 }
 
-void INIT(void)
+static void INIT(void)
 {
   printf("Morph 3D - Shows morphing platonic polyhedra\n");
   printf("Author: Marcelo Fernandes Vianna (vianna@cat.cbpf.br)\n\n");

progs/demos/multiarb.c

@@ -1,4 +1,4 @@
-/* $Id: multiarb.c,v 1.3 1999/10/21 16:40:32 brianp Exp $ */
+/* $Id: multiarb.c,v 1.6 2000/05/23 23:21:00 brianp Exp $ */
 
 /*
  * GL_ARB_multitexture demo
@@ -12,6 +12,15 @@
 
 /*
  * $Log: multiarb.c,v $
+ * Revision 1.6  2000/05/23 23:21:00  brianp
+ * set default window pos
+ *
+ * Revision 1.5  2000/02/02 17:31:45  brianp
+ * changed > to >=
+ *
+ * Revision 1.4  2000/02/02 01:07:21  brianp
+ * limit Drift to [0, 1]
+ *
  * Revision 1.3  1999/10/21 16:40:32  brianp
  * added -info command line option
  *
@@ -61,6 +70,8 @@ static void Idle( void )
 {
    if (Animate) {
       Drift += 0.05;
+      if (Drift >= 1.0)
+         Drift = 0.0;
 
 #ifdef GL_ARB_multitexture
       glActiveTextureARB(GL_TEXTURE0_ARB);
@@ -311,6 +322,7 @@ int main( int argc, char *argv[] )
 {
    glutInit( &argc, argv );
    glutInitWindowSize( 300, 300 );
+   glutInitWindowPosition( 0, 0 );
    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
    glutCreateWindow(argv[0] );
 

progs/demos/occlude.c

@@ -0,0 +1,226 @@
+/*
+ * GL_HP_occlustion_test demo
+ *
+ * Brian Paul
+ * 31 March 2000
+ *
+ * Copyright (C) 2000  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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <GL/glut.h>
+#include <GL/glext.h>
+
+
+static GLfloat Xpos = 0;
+
+
+static void
+PrintString(const char *s)
+{
+   while (*s) {
+      glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
+      s++;
+   }
+}
+
+
+
+static void Idle(void)
+{
+   static int lastTime = 0;
+   static int sign = +1;
+   int time = glutGet(GLUT_ELAPSED_TIME);
+   float step;
+
+   if (lastTime == 0)
+      lastTime = time;
+   else if (time - lastTime < 20)  /* 50Hz update */
+      return;
+
+   step = (time - lastTime) / 1000.0 * sign;
+   lastTime = time;
+
+   Xpos += step;
+
+   if (Xpos > 2.5) {
+      Xpos = 2.5;
+      sign = -1;
+   }
+   else if (Xpos < -2.5) {
+      Xpos = -2.5;
+      sign = +1;
+   }
+   glutPostRedisplay();
+}
+
+
+static void Display( void )
+{
+   GLboolean result;
+
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+   glTranslatef( 0.0, 0.0, -15.0 );
+
+   /* draw the occluding polygons */
+   glColor3f(0, 0.6, 0.8);
+   glBegin(GL_QUADS);
+   glVertex2f(-1.6, -1.5);
+   glVertex2f(-0.4, -1.5);
+   glVertex2f(-0.4,  1.5);
+   glVertex2f(-1.6,  1.5);
+
+   glVertex2f( 0.4, -1.5);
+   glVertex2f( 1.6, -1.5);
+   glVertex2f( 1.6,  1.5);
+   glVertex2f( 0.4,  1.5);
+   glEnd();
+
+   /* draw the test polygon with occlusion testing */
+   glPushMatrix();
+   glTranslatef(Xpos, 0, -0.5);
+   glScalef(0.3, 0.3, 1.0);
+   glRotatef(-90.0 * Xpos, 0, 0, 1);
+
+   glEnable(GL_OCCLUSION_TEST_HP);  /* NOTE: enabling the occlusion test */
+                                    /* doesn't clear the result flag! */
+   glColorMask(0, 0, 0, 0);
+   glDepthMask(GL_FALSE);
+   /* this call clear's the result flag.  Not really needed for this demo. */
+   glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP, &result);
+
+   glBegin(GL_POLYGON);
+   glVertex3f(-1, -1, 0);
+   glVertex3f( 1, -1, 0);
+   glVertex3f( 1,  1, 0);
+   glVertex3f(-1,  1, 0);
+   glEnd();
+
+   glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP, &result);
+   /* turn off occlusion testing */
+   glDisable(GL_OCCLUSION_TEST_HP);
+   glColorMask(1, 1, 1, 1);
+   glDepthMask(GL_TRUE);
+
+   /* draw the green rect, so we can see what's going on */
+   glColor3f(0.8, 0.5, 0);
+   glBegin(GL_POLYGON);
+   glVertex3f(-1, -1, 0);
+   glVertex3f( 1, -1, 0);
+   glVertex3f( 1,  1, 0);
+   glVertex3f(-1,  1, 0);
+   glEnd();
+
+   glPopMatrix();
+
+
+   /* Print result message */
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+
+   glColor3f(1, 1, 1);
+   glRasterPos3f(-0.25, -0.7, 0);
+
+   if (result)
+      PrintString("   Visible");
+   else
+      PrintString("Fully Occluded");
+
+   glutSwapBuffers();
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void SpecialKey( int key, int x, int y )
+{
+   const GLfloat step = 0.1;
+   (void) x;
+   (void) y;
+   switch (key) {
+      case GLUT_KEY_LEFT:
+         Xpos -= step;
+         break;
+      case GLUT_KEY_RIGHT:
+         Xpos += step;
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void Init( void )
+{
+   const char *ext = (const char *) glGetString(GL_EXTENSIONS);
+   if (!strstr(ext, "GL_HP_occlusion_test")) {
+      printf("Sorry, this demo requires the GL_HP_occlusion_test extension\n");
+      exit(-1);
+   }
+
+   glEnable(GL_DEPTH_TEST);
+}
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 400, 400 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutSpecialFunc( SpecialKey );
+   glutIdleFunc( Idle );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}

progs/demos/osdemo.c

@@ -1,4 +1,4 @@
-/* $Id: osdemo.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: osdemo.c,v 1.4 2000/03/28 16:59:39 rjfrank Exp $ */
 
 /*
  * Demo of off-screen Mesa rendering
@@ -17,24 +17,14 @@
  */
 
 
-/*
- * $Log: osdemo.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
-
-
-
 #include <stdio.h>
 #include <stdlib.h>
 #include "GL/osmesa.h"
 #include "GL/glut.h"
 
 
+#define SAVE_TARGA
+
 
 #define WIDTH 400
 #define HEIGHT 400
@@ -85,27 +75,159 @@ static void render_image( void )
    glutSolidCone(1.0, 2.0, 16, 1);
    glPopMatrix();
 
+#ifdef GL_HP_occlusion_test
+   {
+      GLboolean bRet;
+      glDepthMask(GL_FALSE);
+      glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+      glEnable(GL_OCCLUSION_TEST_HP);
+      glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+
+      glPushMatrix();
+      glTranslatef(0.75, 0.0, -1.0);
+      glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+      glutSolidSphere(1.0, 20, 20);
+      glPopMatrix();
+
+      glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+      printf("Occlusion test 1 (result should be 1): %d\n",bRet);
+
+      glDepthMask(GL_TRUE);
+      glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+      glDisable(GL_OCCLUSION_TEST_HP);
+   }
+#endif
+
    glPushMatrix();
    glTranslatef(0.75, 0.0, -1.0); 
    glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
    glutSolidSphere(1.0, 20, 20);
    glPopMatrix();
 
+#ifdef GL_HP_occlusion_test
+   {
+      GLboolean bRet;
+
+      glDepthMask(GL_FALSE);
+      glColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
+      glEnable(GL_OCCLUSION_TEST_HP);
+      glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+
+      /* draw a sphere inside the previous sphere */
+      glPushMatrix();
+      glTranslatef(0.75, 0.0, -1.0);
+      glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
+      glutSolidSphere(0.5, 20, 20);
+      glPopMatrix();
+
+      glGetBooleanv(GL_OCCLUSION_TEST_RESULT_HP,&bRet);
+      printf("Occlusion test 2 (result should be 0): %d\n",bRet);
+
+      glDepthMask(GL_TRUE);
+      glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
+      glDisable(GL_OCCLUSION_TEST_HP);
+   }
+#endif
+
    glPopMatrix();
 }
 
 
 
+static void
+write_targa(const char *filename, const GLubyte *buffer, int width, int height)
+{
+   FILE *f = fopen( filename, "w" );
+   if (f) {
+      int i, x, y;
+      const GLubyte *ptr = buffer;
+      printf ("osdemo, writing tga file \n");
+      fputc (0x00, f);	/* ID Length, 0 => No ID	*/
+      fputc (0x00, f);	/* Color Map Type, 0 => No color map included	*/
+      fputc (0x02, f);	/* Image Type, 2 => Uncompressed, True-color Image */
+      fputc (0x00, f);	/* Next five bytes are about the color map entries */
+      fputc (0x00, f);	/* 2 bytes Index, 2 bytes length, 1 byte size */
+      fputc (0x00, f);
+      fputc (0x00, f);
+      fputc (0x00, f);
+      fputc (0x00, f);	/* X-origin of Image	*/
+      fputc (0x00, f);
+      fputc (0x00, f);	/* Y-origin of Image	*/
+      fputc (0x00, f);
+      fputc (WIDTH & 0xff, f);      /* Image Width	*/
+      fputc ((WIDTH>>8) & 0xff, f);
+      fputc (HEIGHT & 0xff, f);     /* Image Height	*/
+      fputc ((HEIGHT>>8) & 0xff, f);
+      fputc (0x18, f);		/* Pixel Depth, 0x18 => 24 Bits	*/
+      fputc (0x20, f);		/* Image Descriptor	*/
+      fclose(f);
+      f = fopen( filename, "ab" );  /* reopen in binary append mode */
+      for (y=height-1; y>=0; y--) {
+         for (x=0; x<width; x++) {
+            i = (y*width + x) * 4;
+            fputc(ptr[i+2], f); /* write blue */
+            fputc(ptr[i+1], f); /* write green */
+            fputc(ptr[i], f);   /* write red */
+         }
+      }
+   }
+}
+
+
+static void
+write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
+{
+   const int binary = 0;
+   FILE *f = fopen( filename, "w" );
+   if (f) {
+      int i, x, y;
+      const GLubyte *ptr = buffer;
+      if (binary) {
+         fprintf(f,"P6\n");
+         fprintf(f,"# ppm-file created by osdemo.c\n");
+         fprintf(f,"%i %i\n", width,height);
+         fprintf(f,"255\n");
+         fclose(f);
+         f = fopen( filename, "ab" );  /* reopen in binary append mode */
+         for (y=height-1; y>=0; y--) {
+            for (x=0; x<width; x++) {
+               i = (y*width + x) * 4;
+               fputc(ptr[i], f);   /* write red */
+               fputc(ptr[i+1], f); /* write green */
+               fputc(ptr[i+2], f); /* write blue */
+            }
+         }
+      }
+      else {
+         /*ASCII*/
+         int counter = 0;
+         fprintf(f,"P3\n");
+         fprintf(f,"# ascii ppm file created by osdemo.c\n");
+         fprintf(f,"%i %i\n", width, height);
+         fprintf(f,"255\n");
+         for (y=height-1; y>=0; y--) {
+            for (x=0; x<width; x++) {
+               i = (y*width + x) * 4;
+               fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
+               counter++;
+               if (counter % 5 == 0)
+                  fprintf(f, "\n");
+            }
+         }
+      }
+      fclose(f);
+   }
+}
+
+
+
 int main( int argc, char *argv[] )
 {
-   OSMesaContext ctx;
-   void *buffer;
-
    /* Create an RGBA-mode context */
-   ctx = OSMesaCreateContext( GL_RGBA, NULL );
+   OSMesaContext ctx = OSMesaCreateContext( GL_RGBA, NULL );
 
    /* Allocate the image buffer */
-   buffer = malloc( WIDTH * HEIGHT * 4 );
+   void *buffer = malloc( WIDTH * HEIGHT * 4 );
 
    /* Bind the buffer to the context and make it current */
    OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, WIDTH, HEIGHT );
@@ -113,48 +235,14 @@ int main( int argc, char *argv[] )
    render_image();
 
    if (argc>1) {
-      /* write PPM file */
-      FILE *f = fopen( argv[1], "w" );
-      if (f) {
-         int i, x, y;
-         GLubyte *ptr = (GLubyte *) buffer;
-#define BINARY 0
-#if BINARY
-         fprintf(f,"P6\n");
-         fprintf(f,"# ppm-file created by %s\n",  argv[0]);
-         fprintf(f,"%i %i\n", WIDTH,HEIGHT);
-         fprintf(f,"255\n");
-         fclose(f);
-         f = fopen( argv[1], "ab" );  /* reopen in binary append mode */
-         for (y=HEIGHT-1; y>=0; y--) {
-            for (x=0; x<WIDTH; x++) {
-               i = (y*WIDTH + x) * 4;
-               fputc(ptr[i], f);   /* write red */
-               fputc(ptr[i+1], f); /* write green */
-               fputc(ptr[i+2], f); /* write blue */
-            }
-         }
-#else /*ASCII*/
-         int counter = 0;
-         fprintf(f,"P3\n");
-         fprintf(f,"# ascii ppm file created by %s\n", argv[0]);
-         fprintf(f,"%i %i\n", WIDTH, HEIGHT);
-         fprintf(f,"255\n");
-         for (y=HEIGHT-1; y>=0; y--) {
-            for (x=0; x<WIDTH; x++) {
-               i = (y*WIDTH + x) * 4;
-               fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
-               counter++;
-               if (counter % 5 == 0)
-                  fprintf(f, "\n");
-            }
-         }
+#ifdef SAVE_TARGA
+      write_targa(argv[1], buffer, WIDTH, HEIGHT);
+#else
+      write_ppm(argv[1], buffer, WIDTH, HEIGHT);
 #endif
-         fclose(f);
-      }
    }
    else {
-      printf("Specify a filename if you want to make a ppm file\n");
+      printf("Specify a filename if you want to make an image file\n");
    }
 
    printf("all done\n");

progs/demos/paltex.c

@@ -1,30 +1,14 @@
-/* $Id: paltex.c,v 1.2 1999/11/02 15:09:04 brianp Exp $ */
+/* $Id: paltex.c,v 1.4 2000/06/27 17:12:10 brianp Exp $ */
 
 /*
  * Paletted texture demo.  Written by Brian Paul.
  * This program is in the public domain.
  */
 
-/*
- * $Log: paltex.c,v $
- * Revision 1.2  1999/11/02 15:09:04  brianp
- * new texture image, cleaned-up code
- *
- * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
- * Imported sources
- *
- * Revision 3.1  1999/03/28 18:20:49  brianp
- * minor clean-up
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
-
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#define GL_GLEXT_LEGACY
 #include <GL/glut.h>
 
 
@@ -98,7 +82,6 @@ static void Init( void )
          "                                "
       };
    GLubyte table[256][4];
-   int i;
 
    if (!glutExtensionSupported("GL_EXT_paletted_texture")) {
       printf("Sorry, GL_EXT_paletted_texture not supported\n");

progs/demos/particles.cxx

@@ -0,0 +1,219 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (humanware@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdlib.h>
+
+#include "particles.h"
+
+#define vinit(a,i,j,k) {\
+  (a)[0]=i;\
+  (a)[1]=j;\
+  (a)[2]=k;\
+}
+
+#define vadds(a,dt,b) {\
+  (a)[0]+=(dt)*(b)[0];\
+  (a)[1]+=(dt)*(b)[1];\
+  (a)[2]+=(dt)*(b)[2];\
+}
+
+#define vequ(a,b) {\
+  (a)[0]=(b)[0];\
+  (a)[1]=(b)[1];\
+  (a)[2]=(b)[2];\
+}
+
+#define vinter(a,dt,b,c) {\
+  (a)[0]=(dt)*(b)[0]+(1.0-dt)*(c)[0];\
+  (a)[1]=(dt)*(b)[1]+(1.0-dt)*(c)[1];\
+  (a)[2]=(dt)*(b)[2]+(1.0-dt)*(c)[2];\
+}
+
+#define clamp(a)        ((a) < 0.0 ? 0.0 : ((a) < 1.0 ? (a) : 1.0))
+
+#define vclamp(v) {\
+  (v)[0]=clamp((v)[0]);\
+  (v)[1]=clamp((v)[1]);\
+  (v)[2]=clamp((v)[2]);\
+}
+
+
+float rainParticle::min[3];
+float rainParticle::max[3];
+float rainParticle::partLength=0.2f;
+
+
+static float vrnd(void)
+{
+  return(((float)rand())/RAND_MAX);
+}
+
+
+particle::particle()
+{
+  age=0.0f;
+
+  vinit(acc,0.0f,0.0f,0.0f);
+  vinit(vel,0.0f,0.0f,0.0f);
+  vinit(pos,0.0f,0.0f,0.0f);
+}
+
+void particle::elapsedTime(float dt)
+{
+  age+=dt;
+
+  vadds(vel,dt,acc);
+
+  vadds(pos,dt,vel);
+}
+
+/////////////////////////////////////////
+// Particle System
+/////////////////////////////////////////
+
+particleSystem::particleSystem()
+{
+  t=0.0f;
+
+  part=NULL;
+
+  particleNum=0;
+}
+
+particleSystem::~particleSystem()
+{
+  if(part)
+    free(part);
+}
+
+void particleSystem::addParticle(particle *p)
+{
+  if(!part) {
+    part=(particle **)calloc(1,sizeof(particle *));
+    part[0]=p;
+    particleNum=1;
+  } else {
+    particleNum++;
+    part=(particle **)realloc(part,sizeof(particle *)*particleNum);
+    part[particleNum-1]=p;
+  }
+}
+
+void particleSystem::reset(void)
+{
+  if(part)
+    free(part);
+
+  t=0.0f;
+
+  part=NULL;
+
+  particleNum=0;
+}
+
+void particleSystem::draw(void)
+{
+  if(!part)
+    return;
+
+  part[0]->beginDraw();
+  for(unsigned int i=0;i<particleNum;i++)
+    part[i]->draw();
+  part[0]->endDraw();
+}
+
+void particleSystem::addTime(float dt)
+{
+  if(!part)
+    return;
+
+  for(unsigned int i=0;i<particleNum;i++) {
+    part[i]->elapsedTime(dt);
+    part[i]->checkAge();
+  }
+}
+
+/////////////////////////////////////////
+// Rain
+/////////////////////////////////////////
+
+void rainParticle::init(void)
+{
+  age=0.0f;
+
+  acc[0]=0.0f;
+  acc[1]=-0.98f;
+  acc[2]=0.0f;
+
+  vel[0]=0.0f;
+  vel[1]=0.0f;
+  vel[2]=0.0f;
+
+  oldpos[0]=pos[0]=min[0]+(max[0]-min[0])*vrnd();
+  oldpos[1]=pos[1]=max[1]+0.2f*max[1]*vrnd();
+  oldpos[2]=pos[2]=min[2]+(max[2]-min[2])*vrnd();
+
+  vadds(oldpos,-partLength,vel);
+}
+
+rainParticle::rainParticle()
+{ 
+  init();
+}
+
+void rainParticle::setRainingArea(float minx, float miny, float minz,
+				  float maxx, float maxy, float maxz)
+{
+  vinit(min,minx,miny,minz);
+  vinit(max,maxx,maxy,maxz);
+}
+
+void rainParticle::setLength(float l)
+{
+  partLength=l;
+}
+
+void rainParticle::draw(void)
+{
+  glColor4f(0.7f,0.95f,1.0f,0.0f);
+  glVertex3fv(oldpos);
+
+  glColor4f(0.3f,0.7f,1.0f,1.0f);
+  glVertex3fv(pos);
+}
+
+void rainParticle::checkAge(void)
+{
+  if(pos[1]<min[1])
+    init();
+}
+
+void rainParticle::elapsedTime(float dt)
+{
+  particle::elapsedTime(dt);
+
+  if(pos[0]<min[0])
+    pos[0]=max[0]-(min[0]-pos[0]);
+  if(pos[2]<min[2])
+    pos[2]=max[2]-(min[2]-pos[2]);
+
+  if(pos[0]>max[0])
+    pos[0]=min[0]+(pos[0]-max[0]);
+  if(pos[2]>max[2])
+    pos[2]=min[2]+(pos[2]-max[2]);
+
+  vequ(oldpos,pos);
+  vadds(oldpos,-partLength,vel);
+}
+
+void rainParticle::randomHeight(void)
+{
+  pos[1]=(max[1]-min[1])*vrnd()+min[1];
+
+  oldpos[1]=pos[1]-partLength*vel[1];
+}

progs/demos/particles.h

@@ -0,0 +1,81 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (humanware@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#ifndef PARTICLES_H
+#define PARTICLES_H
+
+#include <GL/gl.h>
+
+class particle {
+ protected:
+  float age;         // in seconds
+  float acc[3];
+  float vel[3];
+  float pos[3];
+
+ public:
+  particle();
+  virtual ~particle() {};
+
+  virtual void beginDraw(void) {};
+  virtual void draw(void)=0;
+  virtual void endDraw(void) {};
+
+  virtual void elapsedTime(float);
+  virtual void checkAge(void) {};
+};
+
+class particleSystem {
+ protected:
+  particle **part;
+
+  float t;
+
+  unsigned long particleNum;
+ public:
+  particleSystem();
+  ~particleSystem();
+
+  void addParticle(particle *);
+
+  void reset(void);
+
+  void draw(void);
+
+  void addTime(float);
+};
+
+class rainParticle : public particle {
+ protected:
+  static float min[3];
+  static float max[3];
+  static float partLength;
+
+  float oldpos[3];
+
+  void init(void);
+ public:
+  rainParticle();
+
+  static void setRainingArea(float, float, float,
+			     float, float, float);
+  static void setLength(float);
+  static float getLength(void) { return partLength; };
+
+  void beginDraw(void) { glBegin(GL_LINES); };
+  void draw(void);
+  void endDraw(void) { glEnd(); };
+
+  void elapsedTime(float);
+
+  void checkAge(void);
+
+  void randomHeight(void);
+};
+
+#endif

progs/demos/pixeltex.c

@@ -0,0 +1,210 @@
+/*
+ * GL_SGIS_pixel_texture demo
+ *
+ * Brian Paul
+ * 6 Apr 2000
+ *
+ * Copyright (C) 2000  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.
+ */
+
+
+/*
+ * How this works:
+ * 1. We load the image into a 2D texture.
+ * 2. We generate a sequence of RGB images in which the R component
+ *    is really the S texture coordinate and the G component is really
+ *    the T texture coordinate.
+ *    By warping the mapping from R to S and G to T we can get non-linear
+ *    distortions.
+ * 3. Draw the warped image (a 2-D warping function) with pixel texgen
+ *    enabled.
+ * 4. Loop over the warped images to animate.
+ *
+ * The pixel texgen extension can also be used to do color-space
+ * conversions.  For example, we could convert YCR to RGB with a
+ * 3D texture map which takes YCR as the S,T,R texture coordinate and
+ * returns RGB texel values.
+ *
+ * You can use this extension in (at least) two ways:
+ * 1. glDrawPixels w/ color space conversion/warping
+ * 2. glDrawPixels to spatially warp another image in texture memory
+ *
+ * We're basically using glDrawPixels to draw a texture coordinate image.
+ */
+
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <GL/glut.h>
+#include <GL/glext.h>
+#include "../util/readtex.c"   /* I know, this is a hack. */
+
+#define TEXTURE_FILE "../images/girl.rgb"
+
+static int ImgWidth = 300, ImgHeight = 300;
+#define FRAMES 20
+static GLubyte *ImgData[FRAMES];
+static GLint Frame = 0;
+
+static GLboolean TextureFlag = GL_TRUE;
+
+
+static void Display( void )
+{
+   glClear( GL_COLOR_BUFFER_BIT );
+
+   if (TextureFlag) {
+      glEnable(GL_PIXEL_TEXTURE_SGIS);
+      glEnable(GL_TEXTURE_2D);
+   }
+   else {
+      glDisable(GL_PIXEL_TEXTURE_SGIS);
+      glDisable(GL_TEXTURE_2D);
+   }
+
+   glColor3f(1, 1, 1);
+   glRasterPos2f(10, 10);
+   glDrawPixels(ImgWidth, ImgHeight, GL_RGB, GL_UNSIGNED_BYTE, ImgData[Frame]);
+
+   glutSwapBuffers();
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(0, width, 0, height, -1, 1);
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case ' ':
+         TextureFlag = !TextureFlag;
+         break;
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void Idle(void)
+{
+   Frame++;
+   if (Frame >= FRAMES)
+      Frame = 0;
+   glutPostRedisplay();
+}
+
+
+static GLubyte warp(GLfloat s, int frame)
+{
+   static const GLfloat PI = 3.14159265;
+   static int halfFrame = FRAMES / 2;
+   GLfloat y, weight, v;
+   if (frame >= halfFrame)
+      frame = halfFrame - (frame - halfFrame);
+   y = sin(s * PI);
+   weight = (float) frame / (FRAMES-1);
+   v = y * (0.8 * weight + 0.2);
+   return (GLint) (v * 255.0F);
+}
+
+
+static void InitImage(void)
+{
+   int i, j, frame;
+   for (frame = 0; frame < FRAMES; frame++) {
+      ImgData[frame] = (GLubyte *) malloc(ImgWidth * ImgHeight * 3);
+      for (i = 0; i < ImgHeight; i++) {
+         for (j = 0; j < ImgWidth; j++) {
+            GLubyte *pixel = ImgData[frame] + (i * ImgWidth + j) * 3;
+            pixel[0] = warp((float) j / (ImgWidth - 0), frame);
+            pixel[1] = warp((float) i / (ImgHeight - 0), frame);
+            pixel[2] = 0.0;
+         }
+      }
+   }
+}
+
+
+static void Init( int argc, char *argv[] )
+{
+   const char *exten = (const char *) glGetString(GL_EXTENSIONS);
+   if (!strstr(exten, "GL_SGIS_pixel_texture")) {
+      printf("Sorry, GL_SGIS_pixel_texture not supported by this renderer.\n");
+      exit(1);
+   }
+
+   /* linear filtering looks nicer, but it's slower, since it's in software */
+#if 1
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+#else
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+#endif
+
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+   if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
+      printf("Error: couldn't load texture image\n");
+      exit(1);
+   }
+
+   glClearColor(0.3, 0.3, 0.4, 1.0);
+
+   InitImage();
+
+   printf("Hit SPACE to toggle pixel texgen\n");
+}
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowSize( 330, 330 );
+   glutInitWindowPosition( 0, 0 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+   glutCreateWindow(argv[0] );
+
+   Init( argc, argv );
+
+   glutKeyboardFunc( Key );
+   glutReshapeFunc( Reshape );
+   glutDisplayFunc( Display );
+   glutIdleFunc( Idle );
+
+   glutMainLoop();
+   return 0;
+}

progs/demos/pointblast.c

@@ -13,8 +13,11 @@
 
 /*
  * $Log: pointblast.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.2  2000/06/27 17:04:43  brianp
+ * fixed compiler warnings
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.3  1998/07/26 01:24:27  brianp
  * removed include of gl.h
@@ -35,6 +38,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>       /* for cos(), sin(), and sqrt() */
+#define GL_GLEXT_LEGACY
 #include <GL/glut.h>
 
 /* Some <math.h> files do not define M_PI... */
@@ -100,7 +104,7 @@ static float float_rand(void) { return rand() / (float) RAND_MAX; }
 /* Modeling units of ground extent in each X and Z direction. */
 #define EDGE 12
 
-void
+static void
 makePointList(void)
 {
   float angle, velocity, direction;
@@ -124,7 +128,7 @@ makePointList(void)
   theTime = 0.0;
 }
 
-void
+static void
 updatePointList(void)
 {
   float distance;
@@ -167,7 +171,7 @@ updatePointList(void)
   }
 }
 
-void
+static void
 idle(void)
 {
   updatePointList();
@@ -178,7 +182,7 @@ idle(void)
   glutPostRedisplay();
 }
 
-void
+static void
 visible(int vis)
 {
   if (vis == GLUT_VISIBLE) {
@@ -190,7 +194,7 @@ visible(int vis)
   }
 }
 
-void
+static void
 recalcModelView(void)
 {
   glPopMatrix();
@@ -199,7 +203,7 @@ recalcModelView(void)
   newModel = 0;
 }
 
-void
+static void
 redraw(void)
 {
   int i;
@@ -247,7 +251,7 @@ redraw(void)
 }
 
 /* ARGSUSED2 */
-void
+static void
 mouse(int button, int state, int x, int y)
 {
   /* Scene can be spun around Y axis using left
@@ -262,7 +266,7 @@ mouse(int button, int state, int x, int y)
 }
 
 /* ARGSUSED1 */
-void
+static void
 mouseMotion(int x, int y)
 {
   if (moving) {
@@ -273,7 +277,7 @@ mouseMotion(int x, int y)
   }
 }
 
-void
+static void
 menu(int option)
 {
   switch (option) {
@@ -347,7 +351,7 @@ menu(int option)
 }
 
 /* ARGSUSED1 */
-void
+static void
 key(unsigned char c, int x, int y)
 {
   switch (c) {

progs/demos/rain.cxx

@@ -0,0 +1,388 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (humanware@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+#include <GL/glut.h>
+
+#include "particles.h"
+extern "C" {
+#include "image.h"
+}
+
+#ifdef WIN32
+#include <windows.h>
+#include <mmsystem.h>
+#endif
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen=1;
+#endif
+
+static int WIDTH=640;
+static int HEIGHT=480;
+static int NUMPART=7500;
+
+#define FRAME 50
+
+static float fogcolor[4]={1.0,1.0,1.0,1.0};
+
+#define DIMP 40.0
+#define DIMTP 32.0
+
+static float q[4][3]={
+  {-DIMP,0.0,-DIMP},
+  {DIMP,0.0,-DIMP},
+  {DIMP,0.0,DIMP},
+  {-DIMP,0.0,DIMP}
+};
+
+static float qt[4][2]={
+  {-DIMTP,-DIMTP},
+  {DIMTP,-DIMTP},
+  {DIMTP,DIMTP},
+  {-DIMTP,DIMTP}
+};
+
+static int win=0;
+
+static int fog=1;
+static int help=1;
+
+static GLuint groundid;
+
+static float obs[3]={2.0,1.0,0.0};
+static float dir[3];
+static float v=0.0;
+static float alpha=-90.0;
+static float beta=90.0;
+
+static particleSystem *ps;
+
+static float gettime()
+{
+  static clock_t told=0;
+  clock_t tnew,ris;
+
+  tnew=clock();
+
+  ris=tnew-told;
+
+  told=tnew;
+
+  return(ris/(float)CLOCKS_PER_SEC);
+}
+
+static float gettimerain()
+{
+  static clock_t told=0;
+  clock_t tnew,ris;
+
+  tnew=clock();
+
+  ris=tnew-told;
+
+  told=tnew;
+
+  return(ris/(float)CLOCKS_PER_SEC);
+}
+
+static void calcposobs(void)
+{
+  dir[0]=sin(alpha*M_PI/180.0);
+  dir[2]=cos(alpha*M_PI/180.0)*sin(beta*M_PI/180.0);
+  dir[1]=cos(beta*M_PI/180.0);
+
+  obs[0]+=v*dir[0];
+  obs[1]+=v*dir[1];
+  obs[2]+=v*dir[2];
+
+  rainParticle::setRainingArea(obs[0]-7.0f,-0.2f,obs[2]-7.0f,obs[0]+7.0f,8.0f,obs[2]+7.0f);
+}
+
+static void printstring(void *font, char *string)
+{
+  int len,i;
+
+  len=(int)strlen(string);
+  for(i=0;i<len;i++)
+    glutBitmapCharacter(font,string[i]);
+}
+
+static void reshape(int width, int height)
+{
+  WIDTH=width;
+  HEIGHT=height;
+  glViewport(0,0,(GLint)width,(GLint)height);
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  gluPerspective(70.0,width/(float)height,0.1,30.0);
+
+  glMatrixMode(GL_MODELVIEW);
+}
+
+static void printhelp(void)
+{
+  glEnable(GL_BLEND);
+  glColor4f(0.0,0.0,0.0,0.5);
+  glRecti(40,40,600,440);
+  glDisable(GL_BLEND);
+
+  glColor3f(1.0,0.0,0.0);
+  glRasterPos2i(300,420);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"Help");
+
+  glRasterPos2i(60,390);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"h - Togle Help");
+
+  glRasterPos2i(60,360);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"f - Togle Fog");
+  glRasterPos2i(60,330);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"Arrow Keys - Rotate");
+  glRasterPos2i(60,300);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"a - Increase velocity");
+  glRasterPos2i(60,270);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"z - Decrease velocity");
+  glRasterPos2i(60,240);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"l - Increase rain length");
+  glRasterPos2i(60,210);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"k - Increase rain length");
+}
+
+static void drawrain(void)
+{
+  static int count=0;
+  static char frbuf[80];
+  float fr;
+
+  glEnable(GL_DEPTH_TEST);
+
+  if(fog)
+    glEnable(GL_FOG);
+  else
+    glDisable(GL_FOG);
+
+  glDepthMask(GL_TRUE);
+  glClearColor(1.0,1.0,1.0,1.0);
+  glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+
+  glPushMatrix();
+  calcposobs();
+  gluLookAt(obs[0],obs[1],obs[2],
+	    obs[0]+dir[0],obs[1]+dir[1],obs[2]+dir[2],
+	    0.0,1.0,0.0);
+
+  glColor4f(1.0,1.0,1.0,1.0);
+
+  glEnable(GL_TEXTURE_2D);
+
+  glBindTexture(GL_TEXTURE_2D,groundid);
+  glBegin(GL_QUADS);
+  glTexCoord2fv(qt[0]);
+  glVertex3fv(q[0]);
+  glTexCoord2fv(qt[1]);
+  glVertex3fv(q[1]);
+  glTexCoord2fv(qt[2]);
+  glVertex3fv(q[2]);
+  glTexCoord2fv(qt[3]);
+  glVertex3fv(q[3]);
+  glEnd();
+
+  // Particle System
+
+  glDisable(GL_TEXTURE_2D);
+  glShadeModel(GL_SMOOTH);
+  glEnable(GL_BLEND);
+
+  ps->draw();
+  ps->addTime(gettimerain());
+  
+  glShadeModel(GL_FLAT);
+ 
+
+  if((count % FRAME)==0) {
+    fr=gettime();
+    sprintf(frbuf,"Frame rate: %f",FRAME/fr);
+  }
+
+  glDisable(GL_TEXTURE_2D);
+  glDisable(GL_DEPTH_TEST);
+  glDisable(GL_FOG);
+
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  glOrtho(-0.5,639.5,-0.5,479.5,-1.0,1.0);
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
+
+  glColor3f(1.0,0.0,0.0);
+  glRasterPos2i(10,10);
+  printstring(GLUT_BITMAP_HELVETICA_18,frbuf);
+  glRasterPos2i(350,470);
+  printstring(GLUT_BITMAP_HELVETICA_10,"Rain V1.0 Written by David Bucciarelli (humanware@plus.it)");
+
+  if(help)
+    printhelp();
+
+  reshape(WIDTH,HEIGHT);
+  glPopMatrix();
+
+  glutSwapBuffers();
+
+  count++;
+}
+
+
+static void special(int key, int x, int y)
+{
+  switch (key) {
+  case GLUT_KEY_LEFT:
+    alpha+=2.0;
+    break;
+  case GLUT_KEY_RIGHT:
+    alpha-=2.0;
+    break;
+  case GLUT_KEY_DOWN:
+    beta-=2.0;
+    break;
+  case GLUT_KEY_UP:
+    beta+=2.0;
+    break;
+  }
+}
+
+static void key(unsigned char key, int x, int y)
+{
+  switch (key) {
+  case 27:
+    exit(0);
+    break;
+
+  case 'a':
+    v+=0.01;
+    break;
+  case 'z':
+    v-=0.01;
+    break;
+
+  case 'l':
+    rainParticle::setLength(rainParticle::getLength()+0.025f);
+    break;
+  case 'k':
+    rainParticle::setLength(rainParticle::getLength()-0.025f);
+    break;
+
+  case 'h':
+    help=(!help);
+    break;
+  case 'f':
+    fog=(!fog);
+    break;
+#ifdef XMESA
+  case ' ':
+    XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+    fullscreen=(!fullscreen);
+    break;
+#endif
+  }
+}
+
+static void inittextures(void)
+{
+  IMAGE *img;
+  GLenum gluerr;
+
+  glGenTextures(1,&groundid);
+  glBindTexture(GL_TEXTURE_2D,groundid);
+
+  if(!(img=ImageLoad("s128.rgb"))) {
+    fprintf(stderr,"Error reading a texture.\n");
+    exit(-1);
+  }
+
+  glPixelStorei(GL_UNPACK_ALIGNMENT,4);
+  if((gluerr=(GLenum)gluBuild2DMipmaps(GL_TEXTURE_2D, 3, img->sizeX, img->sizeY, GL_RGB,
+			       GL_UNSIGNED_BYTE, (GLvoid *)(img->data)))) {
+    fprintf(stderr,"GLULib%s\n",gluErrorString(gluerr));
+    exit(-1);
+  }
+
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
+
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+
+  glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);
+}
+
+static void initparticle(void)
+{
+  ps=new particleSystem;
+
+  rainParticle::setRainingArea(-7.0f,-0.2f,-7.0f,7.0f,8.0f,7.0f);
+
+  for(int i=0;i<NUMPART;i++) {
+    rainParticle *p=new rainParticle;
+    p->randomHeight();
+
+    ps->addParticle((particle *)p);
+  }
+}
+
+int main(int ac,char **av)
+{
+  fprintf(stderr,"Rain V1.0\nWritten by David Bucciarelli (humanware@plus.it)\n");
+
+  /* Default settings */
+
+  WIDTH=640;
+  HEIGHT=480;
+
+  glutInitWindowPosition(0,0);
+  glutInitWindowSize(WIDTH,HEIGHT);
+  glutInit(&ac,av);
+
+  glutInitDisplayMode(GLUT_RGB|GLUT_DEPTH|GLUT_DOUBLE);
+
+  if(!(win=glutCreateWindow("Rain"))) {
+    fprintf(stderr,"Error opening a window.\n");
+    exit(-1);
+  }
+  
+  reshape(WIDTH,HEIGHT);
+
+  inittextures();
+
+  glShadeModel(GL_FLAT);
+  glEnable(GL_DEPTH_TEST);
+
+  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
+
+  glEnable(GL_FOG);
+  glFogi(GL_FOG_MODE,GL_EXP);
+  glFogfv(GL_FOG_COLOR,fogcolor);
+  glFogf(GL_FOG_DENSITY,0.1);
+#ifdef FX
+  glHint(GL_FOG_HINT,GL_NICEST);
+#endif
+
+  initparticle();
+
+  glutKeyboardFunc(key);
+  glutSpecialFunc(special);
+  glutDisplayFunc(drawrain);
+  glutIdleFunc(drawrain);
+  glutReshapeFunc(reshape);
+  glutMainLoop();
+
+  return(0);
+}

progs/demos/ray.c

@@ -0,0 +1,908 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+static int WIDTH = 640;
+static int HEIGHT = 480;
+
+#define FRAME 50
+
+#define BASESIZE 7.5f
+#define SPHERE_RADIUS 0.75f
+
+#define TEX_CHECK_WIDTH 256
+#define TEX_CHECK_HEIGHT 256
+#define TEX_CHECK_SLOT_SIZE (TEX_CHECK_HEIGHT/16)
+#define TEX_CHECK_NUMSLOT (TEX_CHECK_HEIGHT/TEX_CHECK_SLOT_SIZE)
+
+#define TEX_REFLECT_WIDTH 256
+#define TEX_REFLECT_HEIGHT 256
+#define TEX_REFLECT_SLOT_SIZE (TEX_REFLECT_HEIGHT/16)
+#define TEX_REFLECT_NUMSLOT (TEX_REFLECT_HEIGHT/TEX_REFLECT_SLOT_SIZE)
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+#define EPSILON 0.0001
+
+#define clamp255(a)  ( (a)<(0.0f) ? (0.0f) : ((a)>(255.0f) ? (255.0f) : (a)) )
+
+#define fabs(x) ((x)<0.0f?-(x):(x))
+
+#define vequ(a,b) { (a)[0]=(b)[0]; (a)[1]=(b)[1]; (a)[2]=(b)[2]; }
+#define vsub(a,b,c) { (a)[0]=(b)[0]-(c)[0]; (a)[1]=(b)[1]-(c)[1]; (a)[2]=(b)[2]-(c)[2]; }
+#define	dprod(a,b) ((a)[0]*(b)[0]+(a)[1]*(b)[1]+(a)[2]*(b)[2])
+#define vnormalize(a,b) { \
+  register float m_norm; \
+  m_norm=sqrt((double)dprod((a),(a))); \
+  (a)[0] /=m_norm; \
+  (a)[1] /=m_norm; \
+  (a)[2] /=m_norm; }
+
+static GLubyte checkmap[TEX_CHECK_HEIGHT][TEX_CHECK_WIDTH][3];
+static GLuint checkid;
+static int checkmap_currentslot = 0;
+
+static GLubyte reflectmap[TEX_REFLECT_HEIGHT][TEX_REFLECT_WIDTH][3];
+static GLuint reflectid;
+static int reflectmap_currentslot = 0;
+
+static GLuint lightdlist;
+static GLuint objdlist;
+
+static float lightpos[3] = { 2.1, 2.1, 2.8 };
+static float objpos[3] = { 0.0, 0.0, 1.0 };
+
+static float sphere_pos[TEX_CHECK_HEIGHT][TEX_REFLECT_WIDTH][3];
+
+static int win = 0;
+
+static float fogcolor[4] = { 0.05, 0.05, 0.05, 1.0 };
+
+static float obs[3] = { 7.0, 0.0, 2.0 };
+static float dir[3];
+static float v = 0.0;
+static float alpha = -90.0;
+static float beta = 90.0;
+
+static int fog = 1;
+static int bfcull = 1;
+static int poutline = 0;
+static int help = 1;
+static int showcheckmap = 1;
+static int showreflectmap = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+
+static float
+gettime(void)
+{
+   static float told = 0.0f;
+   float tnew, ris;
+
+   tnew = glutGet(GLUT_ELAPSED_TIME);
+
+   ris = tnew - told;
+
+   told = tnew;
+
+   return ris / 1000.0;
+}
+
+static void
+calcposobs(void)
+{
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[2] = cos(beta * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+}
+
+static void
+special(int k, int x, int y)
+{
+   switch (k) {
+   case GLUT_KEY_LEFT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+   switch (k) {
+   case 27:
+      exit(0);
+      break;
+
+   case 's':
+      lightpos[1] -= 0.1;
+      break;
+   case 'd':
+      lightpos[1] += 0.1;
+      break;
+   case 'e':
+      lightpos[0] -= 0.1;
+      break;
+   case 'x':
+      lightpos[0] += 0.1;
+      break;
+   case 'w':
+      lightpos[2] -= 0.1;
+      break;
+   case 'r':
+      lightpos[2] += 0.1;
+      break;
+
+   case 'j':
+      objpos[1] -= 0.1;
+      break;
+   case 'k':
+      objpos[1] += 0.1;
+      break;
+   case 'i':
+      objpos[0] -= 0.1;
+      break;
+   case 'm':
+      objpos[0] += 0.1;
+      break;
+   case 'u':
+      objpos[2] -= 0.1;
+      break;
+   case 'o':
+      objpos[2] += 0.1;
+      break;
+
+   case 'a':
+      v += 0.005;
+      break;
+   case 'z':
+      v -= 0.005;
+      break;
+
+   case 'g':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+
+   case '1':
+      showcheckmap = (!showcheckmap);
+      break;
+   case '2':
+      showreflectmap = (!showreflectmap);
+      break;
+
+   case 'b':
+      if (bfcull) {
+	 glDisable(GL_CULL_FACE);
+	 bfcull = 0;
+      }
+      else {
+	 glEnable(GL_CULL_FACE);
+	 bfcull = 1;
+      }
+      break;
+   case 'p':
+      if (poutline) {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+	 poutline = 0;
+      }
+      else {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+	 poutline = 1;
+      }
+      break;
+#ifdef XMESA
+   case ' ':
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      fullscreen = (!fullscreen);
+      break;
+#endif
+   }
+}
+
+static void
+reshape(int w, int h)
+{
+   WIDTH = w;
+   HEIGHT = h;
+   glViewport(0, 0, w, h);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(45.0, w / (float) h, 0.8, 40.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+   glEnable(GL_BLEND);
+   glColor4f(0.5, 0.5, 0.5, 0.5);
+   glRecti(40, 40, 600, 440);
+   glDisable(GL_BLEND);
+
+   glColor3f(0.0, 0.0, 1.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_HELVETICA_18, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_HELVETICA_12, "h - Togle Help");
+   glRasterPos2i(60, 370);
+   printstring(GLUT_BITMAP_HELVETICA_12, "f - Togle Fog");
+   glRasterPos2i(60, 350);
+   printstring(GLUT_BITMAP_HELVETICA_12, "b - Togle Back face culling");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_HELVETICA_12, "p - Togle Wire frame");
+   glRasterPos2i(60, 310);
+   printstring(GLUT_BITMAP_HELVETICA_12, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 290);
+   printstring(GLUT_BITMAP_HELVETICA_12, "a - Increase velocity");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_HELVETICA_12, "z - Decrease velocity");
+
+   glRasterPos2i(60, 250);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_HELVETICA_12,
+		  "j - Togle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_HELVETICA_12,
+		  "(No Joystick control available)");
+
+   glRasterPos2i(60, 230);
+   printstring(GLUT_BITMAP_HELVETICA_12,
+	       "To move the light source: s - left,  d - right,  e - far,  x - near,  w - down r - up");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_HELVETICA_12,
+	       "To move the mirror sphere: j - left,  k - right,  i - far,  m - near,  u - down o - up");
+
+   glRasterPos2i(60, 190);
+   printstring(GLUT_BITMAP_HELVETICA_12,
+	       "1 - Togle the plane texture map window");
+
+   glRasterPos2i(60, 170);
+   printstring(GLUT_BITMAP_HELVETICA_12,
+	       "2 - Togle the sphere texture map window");
+}
+
+static GLboolean
+seelight(float p[3], float dir[3])
+{
+   float c[3], b, a, d, t, dist[3];
+
+   vsub(c, p, objpos);
+   b = -dprod(c, dir);
+   a = dprod(c, c) - SPHERE_RADIUS * SPHERE_RADIUS;
+
+   if ((d = b * b - a) < 0.0 || (b < 0.0 && a > 0.0))
+      return GL_FALSE;
+
+   d = sqrt(d);
+
+   t = b - d;
+
+   if (t < EPSILON) {
+      t = b + d;
+      if (t < EPSILON)
+	 return GL_FALSE;
+   }
+
+   vsub(dist, lightpos, p);
+   if (dprod(dist, dist) < t * t)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+static int
+colorcheckmap(float ppos[3], float c[3])
+{
+   static float norm[3] = { 0.0f, 0.0f, 1.0f };
+   float ldir[3], vdir[3], h[3], dfact, kfact, r, g, b;
+   int x, y;
+
+   x = (int) ((ppos[0] + BASESIZE / 2) * (10.0f / BASESIZE));
+   if ((x < 0) || (x > 10))
+      return GL_FALSE;
+
+   y = (int) ((ppos[1] + BASESIZE / 2) * (10.0f / BASESIZE));
+   if ((y < 0) || (y > 10))
+      return GL_FALSE;
+
+   r = 255.0f;
+   if (y & 1) {
+      if (x & 1)
+	 g = 255.0f;
+      else
+	 g = 0.0f;
+   }
+   else {
+      if (x & 1)
+	 g = 0.0f;
+      else
+	 g = 255.0f;
+   }
+   b = 0.0f;
+
+   vsub(ldir, lightpos, ppos);
+   vnormalize(ldir, ldir);
+
+   if (seelight(ppos, ldir)) {
+      c[0] = r * 0.05f;
+      c[1] = g * 0.05f;
+      c[2] = b * 0.05f;
+
+      return GL_TRUE;
+   }
+
+   dfact = dprod(ldir, norm);
+   if (dfact < 0.0f)
+      dfact = 0.0f;
+
+   vsub(vdir, obs, ppos);
+   vnormalize(vdir, vdir);
+   h[0] = 0.5f * (vdir[0] + ldir[0]);
+   h[1] = 0.5f * (vdir[1] + ldir[1]);
+   h[2] = 0.5f * (vdir[2] + ldir[2]);
+   kfact = dprod(h, norm);
+   kfact =
+      kfact * kfact * kfact * kfact * kfact * kfact * kfact * 7.0f * 255.0f;
+
+   r = r * dfact + kfact;
+   g = g * dfact + kfact;
+   b = b * dfact + kfact;
+
+   c[0] = clamp255(r);
+   c[1] = clamp255(g);
+   c[2] = clamp255(b);
+
+   return GL_TRUE;
+}
+
+static void
+updatecheckmap(int slot)
+{
+   float c[3], ppos[3];
+   int x, y;
+
+   glBindTexture(GL_TEXTURE_2D, checkid);
+
+   ppos[2] = 0.0f;
+   for (y = slot * TEX_CHECK_SLOT_SIZE; y < (slot + 1) * TEX_CHECK_SLOT_SIZE;
+	y++) {
+      ppos[1] = (y / (float) TEX_CHECK_HEIGHT) * BASESIZE - BASESIZE / 2;
+
+      for (x = 0; x < TEX_CHECK_WIDTH; x++) {
+	 ppos[0] = (x / (float) TEX_CHECK_WIDTH) * BASESIZE - BASESIZE / 2;
+
+	 colorcheckmap(ppos, c);
+	 checkmap[y][x][0] = (GLubyte) c[0];
+	 checkmap[y][x][1] = (GLubyte) c[1];
+	 checkmap[y][x][2] = (GLubyte) c[2];
+      }
+   }
+
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, slot * TEX_CHECK_SLOT_SIZE,
+		   TEX_CHECK_WIDTH, TEX_CHECK_SLOT_SIZE, GL_RGB,
+		   GL_UNSIGNED_BYTE,
+		   &checkmap[slot * TEX_CHECK_SLOT_SIZE][0][0]);
+
+}
+
+static void
+updatereflectmap(int slot)
+{
+   float rf, r, g, b, t, dfact, kfact, rdir[3];
+   float rcol[3], ppos[3], norm[3], ldir[3], h[3], vdir[3], planepos[3];
+   int x, y;
+
+   glBindTexture(GL_TEXTURE_2D, reflectid);
+
+   for (y = slot * TEX_REFLECT_SLOT_SIZE;
+	y < (slot + 1) * TEX_REFLECT_SLOT_SIZE; y++)
+      for (x = 0; x < TEX_REFLECT_WIDTH; x++) {
+	 ppos[0] = sphere_pos[y][x][0] + objpos[0];
+	 ppos[1] = sphere_pos[y][x][1] + objpos[1];
+	 ppos[2] = sphere_pos[y][x][2] + objpos[2];
+
+	 vsub(norm, ppos, objpos);
+	 vnormalize(norm, norm);
+
+	 vsub(ldir, lightpos, ppos);
+	 vnormalize(ldir, ldir);
+	 vsub(vdir, obs, ppos);
+	 vnormalize(vdir, vdir);
+
+	 rf = 2.0f * dprod(norm, vdir);
+	 if (rf > EPSILON) {
+	    rdir[0] = rf * norm[0] - vdir[0];
+	    rdir[1] = rf * norm[1] - vdir[1];
+	    rdir[2] = rf * norm[2] - vdir[2];
+
+	    t = -objpos[2] / rdir[2];
+
+	    if (t > EPSILON) {
+	       planepos[0] = objpos[0] + t * rdir[0];
+	       planepos[1] = objpos[1] + t * rdir[1];
+	       planepos[2] = 0.0f;
+
+	       if (!colorcheckmap(planepos, rcol))
+		  rcol[0] = rcol[1] = rcol[2] = 0.0f;
+	    }
+	    else
+	       rcol[0] = rcol[1] = rcol[2] = 0.0f;
+	 }
+	 else
+	    rcol[0] = rcol[1] = rcol[2] = 0.0f;
+
+	 dfact = 0.1f * dprod(ldir, norm);
+
+	 if (dfact < 0.0f) {
+	    dfact = 0.0f;
+	    kfact = 0.0f;
+	 }
+	 else {
+	    h[0] = 0.5f * (vdir[0] + ldir[0]);
+	    h[1] = 0.5f * (vdir[1] + ldir[1]);
+	    h[2] = 0.5f * (vdir[2] + ldir[2]);
+	    kfact = dprod(h, norm);
+	    kfact *= kfact;
+	    kfact *= kfact;
+	    kfact *= kfact;
+	    kfact *= kfact;
+	    kfact *= 10.0f;
+	 }
+
+	 r = dfact + kfact;
+	 g = dfact + kfact;
+	 b = dfact + kfact;
+
+	 r *= 255.0f;
+	 g *= 255.0f;
+	 b *= 255.0f;
+
+	 r += rcol[0];
+	 g += rcol[1];
+	 b += rcol[2];
+
+	 r = clamp255(r);
+	 g = clamp255(g);
+	 b = clamp255(b);
+
+	 reflectmap[y][x][0] = (GLubyte) r;
+	 reflectmap[y][x][1] = (GLubyte) g;
+	 reflectmap[y][x][2] = (GLubyte) b;
+      }
+
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, slot * TEX_REFLECT_SLOT_SIZE,
+		   TEX_REFLECT_WIDTH, TEX_REFLECT_SLOT_SIZE, GL_RGB,
+		   GL_UNSIGNED_BYTE,
+		   &reflectmap[slot * TEX_REFLECT_SLOT_SIZE][0][0]);
+}
+
+static void
+drawbase(void)
+{
+   glColor3f(0.0, 0.0, 0.0);
+   glBindTexture(GL_TEXTURE_2D, checkid);
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   glBegin(GL_QUADS);
+   glTexCoord2f(0.0f, 0.0f);
+   glVertex3f(-BASESIZE / 2.0f, -BASESIZE / 2.0f, 0.0f);
+
+   glTexCoord2f(1.0f, 0.0f);
+   glVertex3f(BASESIZE / 2.0f, -BASESIZE / 2.0f, 0.0f);
+
+   glTexCoord2f(1.0f, 1.0f);
+   glVertex3f(BASESIZE / 2.0f, BASESIZE / 2.0f, 0.0f);
+
+   glTexCoord2f(0.0f, 1.0f);
+   glVertex3f(-BASESIZE / 2.0f, BASESIZE / 2.0f, 0.0f);
+
+   glEnd();
+}
+
+static void
+drawobj(void)
+{
+   glColor3f(0.0, 0.0, 0.0);
+   glBindTexture(GL_TEXTURE_2D, reflectid);
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   glPushMatrix();
+   glTranslatef(objpos[0], objpos[1], objpos[2]);
+   glCallList(objdlist);
+   glPopMatrix();
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha -=
+	       2.5 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.5 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.005;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.005;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+updatemaps(void)
+{
+   updatecheckmap(checkmap_currentslot);
+   checkmap_currentslot = (checkmap_currentslot + 1) % TEX_CHECK_NUMSLOT;
+
+   updatereflectmap(reflectmap_currentslot);
+   reflectmap_currentslot =
+      (reflectmap_currentslot + 1) % TEX_REFLECT_NUMSLOT;
+}
+
+static void
+draw(void)
+{
+   static int count = 0;
+   static char frbuf[80];
+   float fr;
+
+   dojoy();
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glEnable(GL_TEXTURE_2D);
+   glEnable(GL_DEPTH_TEST);
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glPushMatrix();
+   calcposobs();
+
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 0.0, 1.0);
+
+   drawbase();
+   drawobj();
+
+   glColor3f(1.0, 1.0, 1.0);
+   glDisable(GL_TEXTURE_2D);
+
+   glPushMatrix();
+   glTranslatef(lightpos[0], lightpos[1], lightpos[2]);
+   glCallList(lightdlist);
+   glPopMatrix();
+
+   glPopMatrix();
+
+   if ((count % FRAME) == 0) {
+      fr = gettime();
+      sprintf(frbuf, "Frame rate: %f", FRAME / fr);
+   }
+
+   glDisable(GL_DEPTH_TEST);
+   glDisable(GL_FOG);
+
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+   glMatrixMode(GL_MODELVIEW);
+
+   glColor3f(0.0f, 0.3f, 1.0f);
+
+   if (showcheckmap) {
+      glEnable(GL_TEXTURE_2D);
+      glBindTexture(GL_TEXTURE_2D, checkid);
+      glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+      glBegin(GL_QUADS);
+      glTexCoord2f(1.0f, 0.0f);
+      glVertex2i(10, 30);
+      glTexCoord2f(1.0f, 1.0f);
+      glVertex2i(10 + 90, 30);
+      glTexCoord2f(0.0f, 1.0f);
+      glVertex2i(10 + 90, 30 + 90);
+      glTexCoord2f(0.0f, 0.0f);
+      glVertex2i(10, 30 + 90);
+      glEnd();
+
+      glDisable(GL_TEXTURE_2D);
+      glBegin(GL_LINE_LOOP);
+      glVertex2i(10, 30);
+      glVertex2i(10 + 90, 30);
+      glVertex2i(10 + 90, 30 + 90);
+      glVertex2i(10, 30 + 90);
+      glEnd();
+      glRasterPos2i(105, 65);
+      printstring(GLUT_BITMAP_HELVETICA_18, "Plane Texture Map");
+   }
+
+   if (showreflectmap) {
+      glEnable(GL_TEXTURE_2D);
+      glBindTexture(GL_TEXTURE_2D, reflectid);
+      glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+      glBegin(GL_QUADS);
+      glTexCoord2f(1.0f, 0.0f);
+      glVertex2i(540, 30);
+      glTexCoord2f(1.0f, 1.0f);
+      glVertex2i(540 + 90, 30);
+      glTexCoord2f(0.0f, 1.0f);
+      glVertex2i(540 + 90, 30 + 90);
+      glTexCoord2f(0.0f, 0.0f);
+      glVertex2i(540, 30 + 90);
+      glEnd();
+
+      glDisable(GL_TEXTURE_2D);
+      glBegin(GL_LINE_LOOP);
+      glVertex2i(540, 30);
+      glVertex2i(540 + 90, 30);
+      glVertex2i(540 + 90, 30 + 90);
+      glVertex2i(540, 30 + 90);
+      glEnd();
+      glRasterPos2i(360, 65);
+      printstring(GLUT_BITMAP_HELVETICA_18, "Sphere Texture Map");
+   }
+
+   glDisable(GL_TEXTURE_2D);
+
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(360, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Ray V1.0 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+   if (help)
+      printhelp();
+
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+   glMatrixMode(GL_MODELVIEW);
+
+   updatemaps();
+
+   glutSwapBuffers();
+
+   count++;
+}
+
+static void
+inittextures(void)
+{
+   int y;
+
+   glGenTextures(1, &checkid);
+   glBindTexture(GL_TEXTURE_2D, checkid);
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   glTexImage2D(GL_TEXTURE_2D, 0, 3, TEX_CHECK_WIDTH, TEX_CHECK_HEIGHT,
+		0, GL_RGB, GL_UNSIGNED_BYTE, checkmap);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   for (y = 0; y < TEX_CHECK_NUMSLOT; y++)
+      updatecheckmap(y);
+
+
+
+   glGenTextures(1, &reflectid);
+   glBindTexture(GL_TEXTURE_2D, reflectid);
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   glTexImage2D(GL_TEXTURE_2D, 0, 3, TEX_REFLECT_WIDTH, TEX_REFLECT_HEIGHT,
+		0, GL_RGB, GL_UNSIGNED_BYTE, reflectmap);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   for (y = 0; y < TEX_REFLECT_NUMSLOT; y++)
+      updatereflectmap(y);
+
+
+}
+
+static void
+initspherepos(void)
+{
+   float alpha, beta, sa, ca, sb, cb;
+   int x, y;
+
+   for (y = 0; y < TEX_REFLECT_HEIGHT; y++) {
+      beta = M_PI - y * (M_PI / TEX_REFLECT_HEIGHT);
+
+      for (x = 0; x < TEX_REFLECT_WIDTH; x++) {
+	 alpha = -x * (2.0f * M_PI / TEX_REFLECT_WIDTH);
+
+	 sa = sin(alpha);
+	 ca = cos(alpha);
+
+	 sb = sin(beta);
+	 cb = cos(beta);
+
+	 sphere_pos[y][x][0] = SPHERE_RADIUS * sa * sb;
+	 sphere_pos[y][x][1] = SPHERE_RADIUS * ca * sb;
+	 sphere_pos[y][x][2] = SPHERE_RADIUS * cb;
+      }
+   }
+}
+
+static void
+initdlists(void)
+{
+   GLUquadricObj *obj;
+
+   obj = gluNewQuadric();
+
+   lightdlist = glGenLists(1);
+   glNewList(lightdlist, GL_COMPILE);
+   gluQuadricDrawStyle(obj, GLU_FILL);
+   gluQuadricNormals(obj, GLU_NONE);
+   gluQuadricTexture(obj, GL_TRUE);
+   gluSphere(obj, 0.25f, 6, 6);
+   glEndList();
+
+   objdlist = glGenLists(1);
+   glNewList(objdlist, GL_COMPILE);
+   gluQuadricDrawStyle(obj, GLU_FILL);
+   gluQuadricNormals(obj, GLU_NONE);
+   gluQuadricTexture(obj, GL_TRUE);
+   gluSphere(obj, SPHERE_RADIUS, 16, 16);
+   glEndList();
+}
+
+int
+main(int ac, char **av)
+{
+   fprintf(stderr,
+	   "Ray V1.0\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+   /*
+      if(!SetPriorityClass(GetCurrentProcess(),REALTIME_PRIORITY_CLASS)) {
+      fprintf(stderr,"Error setting the process class.\n");
+      return 0;
+      }
+
+      if(!SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL)) {
+      fprintf(stderr,"Error setting the process priority.\n");
+      return 0;
+      }
+    */
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTH, HEIGHT);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+
+   if (!(win = glutCreateWindow("Ray"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      return -1;
+   }
+
+   reshape(WIDTH, HEIGHT);
+
+   glShadeModel(GL_FLAT);
+   glEnable(GL_DEPTH_TEST);
+   glDepthFunc(GL_LEQUAL);
+   glEnable(GL_CULL_FACE);
+   glEnable(GL_TEXTURE_2D);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP2);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+
+   glFogf(GL_FOG_DENSITY, 0.01);
+#ifdef FX
+   glHint(GL_FOG_HINT, GL_NICEST);
+#endif
+
+   calcposobs();
+
+   initspherepos();
+
+   inittextures();
+   initdlists();
+
+   glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+
+   glutReshapeFunc(reshape);
+   glutDisplayFunc(draw);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+   glutIdleFunc(draw);
+
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/readpix.c

@@ -0,0 +1,270 @@
+/* $Id: readpix.c,v 1.3 2000/03/31 01:01:31 brianp Exp $ */
+
+/*
+ * glReadPixels and glCopyPixels test
+ * 
+ * Brian Paul   March 1, 2000  This file is in the public domain.
+ */
+
+/*
+ * $Log: readpix.c,v $
+ * Revision 1.3  2000/03/31 01:01:31  brianp
+ * tweaks to allow different read formats/types
+ *
+ * Revision 1.2  2000/03/23 19:47:25  brianp
+ * added benchmarking
+ *
+ * Revision 1.1  2000/03/01 16:23:14  brianp
+ * test glDraw/Read/CopyPixels()
+ *
+ */
+
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glut.h>
+
+#include "../util/readtex.c"  /* a hack, I know */
+
+#define IMAGE_FILE "../images/girl.rgb"
+
+static int ImgWidth, ImgHeight;
+static GLenum ImgFormat;
+static GLubyte *Image = NULL;
+
+static int APosX, APosY;  /* simple drawpixels */
+static int BPosX, BPosY;  /* read/draw pixels */
+static int CPosX, CPosY;  /* copypixels */
+
+static GLboolean DrawFront = GL_FALSE;
+static GLboolean ScaleAndBias = GL_FALSE;
+static GLboolean Benchmark = GL_FALSE;
+static GLubyte *TempImage = NULL;
+
+#if 1
+#define ReadFormat ImgFormat
+#define ReadType GL_UNSIGNED_BYTE
+#endif
+#if 0
+static GLenum ReadFormat = GL_RGBA;
+static GLenum ReadType = GL_UNSIGNED_BYTE;
+#endif
+#if 0
+static GLenum ReadFormat = GL_RGB;
+static GLenum ReadType = GL_UNSIGNED_SHORT_5_6_5;
+#endif
+
+
+static void
+Reset( void )
+{
+   APosX = 5;     APosY = 20;
+   BPosX = APosX + ImgWidth + 5;   BPosY = 20;
+   CPosX = BPosX + ImgWidth + 5;   CPosY = 20;
+}
+
+
+static void
+PrintString(const char *s)
+{
+   while (*s) {
+      glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
+      s++;
+   }
+}
+
+
+static void
+SetupPixelTransfer(GLboolean invert)
+{
+   if (invert) {
+      glPixelTransferf(GL_RED_SCALE, -1.0);
+      glPixelTransferf(GL_RED_BIAS, 1.0);
+      glPixelTransferf(GL_GREEN_SCALE, -1.0);
+      glPixelTransferf(GL_GREEN_BIAS, 1.0);
+      glPixelTransferf(GL_BLUE_SCALE, -1.0);
+      glPixelTransferf(GL_BLUE_BIAS, 1.0);
+   }
+   else {
+      glPixelTransferf(GL_RED_SCALE, 1.0);
+      glPixelTransferf(GL_RED_BIAS, 0.0);
+      glPixelTransferf(GL_GREEN_SCALE, 1.0);
+      glPixelTransferf(GL_GREEN_BIAS, 0.0);
+      glPixelTransferf(GL_BLUE_SCALE, 1.0);
+      glPixelTransferf(GL_BLUE_BIAS, 0.0);
+   }
+}
+
+
+static void
+Display( void )
+{
+   glClear( GL_COLOR_BUFFER_BIT );
+
+   glRasterPos2i(5, ImgHeight+25);
+   PrintString("f = toggle front/back  s = toggle scale/bias  b = benchmark");
+
+   /* draw original image */
+   glRasterPos2i(APosX, 5);
+   PrintString("Original");
+   glRasterPos2i(APosX, APosY);
+   glEnable(GL_DITHER);
+   SetupPixelTransfer(GL_FALSE);
+   glDrawPixels(ImgWidth, ImgHeight, ImgFormat, GL_UNSIGNED_BYTE, Image);
+
+   /* do readpixels, drawpixels */
+   glRasterPos2i(BPosX, 5);
+   PrintString("Read/DrawPixels");
+   SetupPixelTransfer(ScaleAndBias);
+   if (Benchmark) {
+      GLint reads = 0;
+      GLint endTime;
+      GLint startTime = glutGet(GLUT_ELAPSED_TIME);
+      GLdouble seconds, pixelsPerSecond;
+      printf("Benchmarking...\n");
+      do {
+         glReadPixels(APosX, APosY, ImgWidth, ImgHeight,
+                      ReadFormat, ReadType, TempImage);
+         reads++;
+         endTime = glutGet(GLUT_ELAPSED_TIME);
+      } while (endTime - startTime < 4000);   /* 4 seconds */
+      seconds = (double) (endTime - startTime) / 1000.0;
+      pixelsPerSecond = reads * ImgWidth * ImgHeight / seconds;
+      printf("Result:  %d reads in %f seconds = %f pixels/sec\n",
+             reads, seconds, pixelsPerSecond);
+      Benchmark = GL_FALSE;
+   }
+   else {
+      glReadPixels(APosX, APosY, ImgWidth, ImgHeight,
+                   ReadFormat, ReadType, TempImage);
+   }
+   glRasterPos2i(BPosX, BPosY);
+   glDisable(GL_DITHER);
+   SetupPixelTransfer(GL_FALSE);
+   glDrawPixels(ImgWidth, ImgHeight, ReadFormat, ReadType, TempImage);
+
+   /* do copypixels */
+   glRasterPos2i(CPosX, 5);
+   PrintString("CopyPixels");
+   glRasterPos2i(CPosX, CPosY);
+   glDisable(GL_DITHER);
+   SetupPixelTransfer(ScaleAndBias);
+   glCopyPixels(APosX, APosY, ImgWidth, ImgHeight, GL_COLOR);
+
+   if (!DrawFront)
+      glutSwapBuffers();
+}
+
+
+static void
+Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho( 0.0, width, 0.0, height, -1.0, 1.0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+}
+
+
+static void
+Key( unsigned char key, int x, int y )
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case 'b':
+         Benchmark = GL_TRUE;
+         break;
+      case 's':
+         ScaleAndBias = !ScaleAndBias;
+         break;
+      case 'f':
+         DrawFront = !DrawFront;
+         if (DrawFront) {
+            glDrawBuffer(GL_FRONT);
+            glReadBuffer(GL_FRONT);
+         }
+         else {
+            glDrawBuffer(GL_BACK);
+            glReadBuffer(GL_BACK);
+         }
+         printf("glDrawBuffer(%s)\n", DrawFront ? "GL_FRONT" : "GL_BACK");
+         break;
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+Init( GLboolean ciMode )
+{
+   printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+   printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+
+   Image = LoadRGBImage( IMAGE_FILE, &ImgWidth, &ImgHeight, &ImgFormat );
+   if (!Image) {
+      printf("Couldn't read %s\n", IMAGE_FILE);
+      exit(0);
+   }
+
+   if (ciMode) {
+      /* Convert RGB image to grayscale */
+      GLubyte *indexImage = malloc( ImgWidth * ImgHeight );
+      GLint i;
+      for (i=0; i<ImgWidth*ImgHeight; i++) {
+         int gray = Image[i*3] + Image[i*3+1] + Image[i*3+2];
+         indexImage[i] = gray / 3;
+      }
+      free(Image);
+      Image = indexImage;
+      ImgFormat = GL_COLOR_INDEX;
+
+      for (i=0;i<255;i++) {
+         float g = i / 255.0;
+         glutSetColor(i, g, g, g);
+      }
+   }
+
+   printf("Loaded %d by %d image\n", ImgWidth, ImgHeight );
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, ImgWidth);
+   glPixelStorei(GL_PACK_ALIGNMENT, 1);
+   glPixelStorei(GL_PACK_ROW_LENGTH, ImgWidth);
+
+   Reset();
+
+   TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 * sizeof(GLubyte));
+   assert(TempImage);
+}
+
+
+int
+main( int argc, char *argv[] )
+{
+   GLboolean ciMode = GL_FALSE;
+   if (argc > 1 && strcmp(argv[1], "-ci")==0) {
+      ciMode = GL_TRUE;
+   }
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 750, 250 );
+   if (ciMode)
+      glutInitDisplayMode( GLUT_INDEX | GLUT_DOUBLE );
+   else
+      glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+   glutCreateWindow(argv[0]);
+   Init(ciMode);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   glutMainLoop();
+   return 0;
+}

progs/demos/reflect.c

@@ -1,4 +1,4 @@
-/* $Id: reflect.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: reflect.c,v 1.3 2000/06/15 14:25:48 brianp Exp $ */
 
 /*
  * Demo of a reflective, texture-mapped surface with OpenGL.
@@ -20,70 +20,40 @@
  */
  
 /*
- * Dirk Reiners (reiners@igd.fhg.de) made some modifications to this code.
- *
- * August 1996 - A few optimizations by Brian
+ * Authors:
+ *   Brian Paul
+ *   Dirk Reiners (reiners@igd.fhg.de) made some modifications to this code.
+ *   Mark Kilgard (April 1997)
+ *   Brian Paul (April 2000 - added keyboard d/s options)
  */
 
-/*
- * April, 1997 - Added Mark Kilgard's changes.
- */
-
-/*
- * $Log: reflect.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.4  1999/03/28 18:22:05  brianp
- * minor clean-up
- *
- * Revision 3.3  1998/11/22 02:54:29  brianp
- * only draw one stack for gluCylinders
- *
- * Revision 3.2  1998/11/19 02:53:48  brianp
- * changed texture image and background color
- *
- * Revision 3.1  1998/11/05 04:34:04  brianp
- * moved image files to ../images/ directory
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
-
-
-#define USE_ZBUFFER
-
-
-/* OK, without hardware support this is overkill. */
-#define USE_TEXTURE
 
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "GL/glut.h"
-
-#include "../util/readtex.c"  /* a hack, I know */
+#include "../util/showbuffer.c"
+#include "../util/readtex.c"
 
 
 #define DEG2RAD (3.14159/180.0)
 
-
 #define TABLE_TEXTURE "../images/tile.rgb"
 
-static int ImgWidth, ImgHeight;
+static GLint ImgWidth, ImgHeight;
 static GLenum ImgFormat;
 static GLubyte *Image = NULL;
 
 #define MAX_OBJECTS 2
-
 static GLint table_list;
 static GLint objects_list[MAX_OBJECTS];
 
-
 static GLfloat xrot, yrot;
 static GLfloat spin;
 
+static GLint Width = 400, Height = 300;
+static GLenum ShowBuffer = GL_NONE;
+
 
 
 static void make_table( void )
@@ -146,16 +116,11 @@ static void make_objects( void )
 }
 
 
-static GLfloat light_pos[] = { 0.0, 20.0, 0.0, 1.0 };
-
 static void init( void )
 {
    make_table();
    make_objects();
 
-   /* Setup texture */
-#ifdef USE_TEXTURE
-
    Image = LoadRGBImage( TABLE_TEXTURE, &ImgWidth, &ImgHeight, &ImgFormat );
    if (!Image) {
       printf("Couldn't read %s\n", TABLE_TEXTURE);
@@ -169,17 +134,11 @@ static void init( void )
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
-#endif
-
 
    xrot = 30.0;
    yrot = 50.0;
    spin = 0.0;
 
-#ifndef USE_ZBUFFER
-   glEnable( GL_CULL_FACE );
-#endif
-
    glShadeModel( GL_FLAT );
    
    glEnable( GL_LIGHT0 );
@@ -194,12 +153,14 @@ static void init( void )
 
 static void reshape(int w, int h)
 {
-   GLfloat aspect = (float) w / (float) h;
-
+   GLfloat yAspect = 2.5;
+   GLfloat xAspect = yAspect * (float) w / (float) h;
+   Width = w;
+   Height = h;
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
-   glFrustum( -aspect, aspect, -1.0, 1.0, 4.0, 300.0 );
+   glFrustum( -xAspect, xAspect, -yAspect, yAspect, 10.0, 30.0 );
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
 }
@@ -212,8 +173,7 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
    (void) eyey;
    (void) eyez;
 #ifndef USE_ZBUFFER
-	if (eyex<0.5)
-	{
+   if (eyex<0.5) {
 #endif
 	   glPushMatrix();
 	   glTranslatef( 1.0, 1.5, 0.0 );
@@ -230,9 +190,8 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
 	   glCallList( objects_list[1] );
 	   glPopMatrix();
 #ifndef USE_ZBUFFER
-	}
-	else
-	{	
+   }
+   else {	
 	   glPushMatrix();
 	   glTranslatef( -1.0, 0.85+3.0*fabs( cos(0.01*spin) ), 0.0 );
 	   glRotatef( 0.5*spin, 0.0, 0.5, 1.0 );
@@ -247,7 +206,7 @@ static void draw_objects( GLfloat eyex, GLfloat eyey, GLfloat eyez )
 	   glRotatef( 0.5*spin, 0.0, 0.5, 1.0 );
 	   glCallList( objects_list[0] );
 	   glPopMatrix();
-	}
+   }
 #endif
 }
 
@@ -262,6 +221,7 @@ static void draw_table( void )
 
 static void draw_scene( void )
 {
+   static GLfloat light_pos[] = { 0.0, 20.0, 0.0, 1.0 };
    GLfloat dist = 20.0;
    GLfloat eyex, eyey, eyez;
 
@@ -279,20 +239,15 @@ static void draw_scene( void )
    glLightfv( GL_LIGHT0, GL_POSITION, light_pos );
  
    /* draw table into stencil planes */
-   glEnable( GL_STENCIL_TEST );
-#ifdef USE_ZBUFFER
    glDisable( GL_DEPTH_TEST );
-#endif
+   glEnable( GL_STENCIL_TEST );
    glStencilFunc( GL_ALWAYS, 1, 0xffffffff );
    glStencilOp( GL_REPLACE, GL_REPLACE, GL_REPLACE );
    glColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
    draw_table();
    glColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
 
-#ifdef USE_ZBUFFER
    glEnable( GL_DEPTH_TEST );
-#endif
-
 
    /* render view from below (reflected viewport) */
    /* only draw where stencil==1 */
@@ -318,9 +273,7 @@ static void draw_scene( void )
    glEnable( GL_BLEND );
    glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
 
-#ifdef USE_TEXTURE
    glEnable( GL_TEXTURE_2D );
-#endif
    draw_table();
    glDisable( GL_TEXTURE_2D );
    glDisable( GL_BLEND );
@@ -334,43 +287,34 @@ static void draw_scene( void )
 
    glPopMatrix();
 
-   glutSwapBuffers();
-}
-
-
-
-#if 0
-void draw_scene(void)
-{
-   GLfloat dist = 20.0;
-   GLfloat eyex, eyey, eyez;
-
-   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
-
-
-   eyex = dist * cos(yrot*DEG2RAD) * cos(xrot*DEG2RAD);
-   eyez = dist * sin(yrot*DEG2RAD) * cos(xrot*DEG2RAD);
-   eyey = dist * sin(xrot*DEG2RAD);
-
-   /* view from top */
-   glPushMatrix();
-   gluLookAt( eyex, eyey, eyez, 0.0, 0.0, 0.0,  0.0, 1.0, 0.0 );
-
-   draw_table();
-
-   glPopMatrix();
+   if (ShowBuffer == GL_DEPTH) {
+      ShowDepthBuffer(Width, Height, 1.0, 0.0);
+   }
+   else if (ShowBuffer == GL_STENCIL) {
+      ShowStencilBuffer(Width, Height, 255.0, 0.0);
+   }
 
    glutSwapBuffers();
 }
-#endif
 
 
 static void Key( unsigned char key, int x, int y )
 {
    (void) x;
    (void) y;
-   if (key==27)
+   if (key == 'd') {
+      ShowBuffer = GL_DEPTH;
+   }
+   else if (key == 's') {
+      ShowBuffer = GL_STENCIL;
+   }
+   else if (key==27) {
       exit(0);
+   }
+   else {
+      ShowBuffer = GL_NONE;
+   }
+   glutPostRedisplay();
 }
 
 
@@ -381,15 +325,13 @@ static void SpecialKey( int key, int x, int y )
    switch (key) {
       case GLUT_KEY_UP:
          xrot += 3.0;
-#ifndef USE_ZBUFFER
-		 if ( xrot > 180 )	xrot = 180;
-#endif
+         if ( xrot > 85 )
+            xrot = 85;
          break;
       case GLUT_KEY_DOWN:
          xrot -= 3.0;
-#ifndef USE_ZBUFFER
-		 if ( xrot < 0 )	xrot = 0;
-#endif
+         if ( xrot < 5 )
+            xrot = 5;
          break;
       case GLUT_KEY_LEFT:
          yrot += 3.0;
@@ -414,22 +356,17 @@ static void idle( void )
 
 int main( int argc, char *argv[] )
 {
-   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB 
-#ifdef USE_ZBUFFER
-		| GLUT_DEPTH 
-#endif
-		| GLUT_STENCIL);
+   glutInit(&argc, argv);
+   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL);
    glutInitWindowPosition( 0, 0 );
-   glutInitWindowSize(400, 300 );
+   glutInitWindowSize( Width, Height );
    glutCreateWindow(argv[0]);
    glutReshapeFunc(reshape);
    glutDisplayFunc(draw_scene);
    glutKeyboardFunc(Key);
    glutSpecialFunc(SpecialKey);
    glutIdleFunc(idle);
-
    init();
-
    glutMainLoop();
    return 0;
 }

progs/demos/shadow.c

@@ -0,0 +1,119 @@
+/**
+(c) Copyright 1993, Silicon Graphics, Inc.
+
+ALL RIGHTS RESERVED
+
+Permission to use, copy, modify, and distribute this software
+for any purpose and without fee is hereby granted, provided
+that the above copyright notice appear in all copies and that
+both the copyright notice and this permission notice appear in
+supporting documentation, and that the name of Silicon
+Graphics, Inc. not be used in advertising or publicity
+pertaining to distribution of the software without specific,
+written prior permission.
+
+THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
+"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
+OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
+MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  IN NO
+EVENT SHALL SILICON GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE
+ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
+INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
+SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
+NOT SILICON GRAPHICS, INC.  HAS BEEN ADVISED OF THE POSSIBILITY
+OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+US Government Users Restricted Rights
+
+Use, duplication, or disclosure by the Government is subject to
+restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+(c)(1)(ii) of the Rights in Technical Data and Computer
+Software clause at DFARS 252.227-7013 and/or in similar or
+successor clauses in the FAR or the DOD or NASA FAR
+Supplement.  Unpublished-- rights reserved under the copyright
+laws of the United States.  Contractor/manufacturer is Silicon
+Graphics, Inc., 2011 N.  Shoreline Blvd., Mountain View, CA
+94039-7311.
+
+OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+*/
+
+/* Taken from the projshadow.c - by Tom McReynolds, SGI */
+
+/* Modified by David Bucciarelli */
+
+/* Rendering shadows using projective shadows. */
+
+#include <GL/glut.h>
+#include "shadow.h"
+
+
+enum {
+  X, Y, Z, W
+};
+enum {
+  A, B, C, D
+};
+
+/* create a matrix that will project the desired shadow */
+void
+shadowmatrix(GLfloat shadowMat[4][4],
+  GLfloat groundplane[4],
+  GLfloat lightpos[4])
+{
+  GLfloat dot;
+
+  /* find dot product between light position vector and ground plane normal */
+  dot = groundplane[X] * lightpos[X] +
+    groundplane[Y] * lightpos[Y] +
+    groundplane[Z] * lightpos[Z] +
+    groundplane[W] * lightpos[W];
+
+  shadowMat[0][0] = dot - lightpos[X] * groundplane[X];
+  shadowMat[1][0] = 0.f - lightpos[X] * groundplane[Y];
+  shadowMat[2][0] = 0.f - lightpos[X] * groundplane[Z];
+  shadowMat[3][0] = 0.f - lightpos[X] * groundplane[W];
+
+  shadowMat[X][1] = 0.f - lightpos[Y] * groundplane[X];
+  shadowMat[1][1] = dot - lightpos[Y] * groundplane[Y];
+  shadowMat[2][1] = 0.f - lightpos[Y] * groundplane[Z];
+  shadowMat[3][1] = 0.f - lightpos[Y] * groundplane[W];
+
+  shadowMat[X][2] = 0.f - lightpos[Z] * groundplane[X];
+  shadowMat[1][2] = 0.f - lightpos[Z] * groundplane[Y];
+  shadowMat[2][2] = dot - lightpos[Z] * groundplane[Z];
+  shadowMat[3][2] = 0.f - lightpos[Z] * groundplane[W];
+
+  shadowMat[X][3] = 0.f - lightpos[W] * groundplane[X];
+  shadowMat[1][3] = 0.f - lightpos[W] * groundplane[Y];
+  shadowMat[2][3] = 0.f - lightpos[W] * groundplane[Z];
+  shadowMat[3][3] = dot - lightpos[W] * groundplane[W];
+
+}
+
+/* find the plane equation given 3 points */
+void
+findplane(GLfloat plane[4],
+  GLfloat v0[3], GLfloat v1[3], GLfloat v2[3])
+{
+  GLfloat vec0[3], vec1[3];
+
+  /* need 2 vectors to find cross product */
+  vec0[X] = v1[X] - v0[X];
+  vec0[Y] = v1[Y] - v0[Y];
+  vec0[Z] = v1[Z] - v0[Z];
+
+  vec1[X] = v2[X] - v0[X];
+  vec1[Y] = v2[Y] - v0[Y];
+  vec1[Z] = v2[Z] - v0[Z];
+
+  /* find cross product to get A, B, and C of plane equation */
+  plane[A] = vec0[Y] * vec1[Z] - vec0[Z] * vec1[Y];
+  plane[B] = -(vec0[X] * vec1[Z] - vec0[Z] * vec1[X]);
+  plane[C] = vec0[X] * vec1[Y] - vec0[Y] * vec1[X];
+
+  plane[D] = -(plane[A] * v0[X] + plane[B] * v0[Y] + plane[C] * v0[Z]);
+}

progs/demos/shadow.h

@@ -0,0 +1,18 @@
+#ifndef SHADOW_H
+#define SHADOW_H
+
+
+extern void
+shadowmatrix(GLfloat shadowMat[4][4],
+             GLfloat groundplane[4],
+             GLfloat lightpos[4]);
+
+
+extern void
+findplane(GLfloat plane[4],
+          GLfloat v0[3], GLfloat v1[3], GLfloat v2[3]);
+
+
+#endif
+
+

progs/demos/stex3d.c

@@ -1,4 +1,4 @@
-/* $Id: stex3d.c,v 1.2 1999/09/17 12:27:01 brianp Exp $ */
+/* $Id: stex3d.c,v 1.5 2000/06/27 17:04:43 brianp Exp $ */
 
 /*----------------------------- 
  * stex3d.c GL example of the mesa 3d-texture extention to simulate procedural
@@ -17,6 +17,15 @@
 
 /*
  * $Log: stex3d.c,v $
+ * Revision 1.5  2000/06/27 17:04:43  brianp
+ * fixed compiler warnings
+ *
+ * Revision 1.4  2000/03/22 19:48:57  brianp
+ * converted from GL_EXT_texture3D to GL 1.2
+ *
+ * Revision 1.3  1999/12/16 08:54:22  brianp
+ * added a cast to malloc call
+ *
  * Revision 1.2  1999/09/17 12:27:01  brianp
  * silenced some warnings
  *
@@ -53,7 +62,6 @@ void init(void),
      initNoise(void);
 float turbulence(float point[3], float lofreq, float hifreq);
 
-int isExtSupported(char *ext);
 void KeyHandler( unsigned char key, int x, int y );
 GLenum parseCmdLine(int argc, char **argv);
 float noise3(float vec[3]);
@@ -121,17 +129,20 @@ void init()
  /* start the noise function variables */
  initNoise();
  
- /* see if the texture 3d extention is supported */
- if (!isExtSupported("GL_EXT_texture3D")) {
-   printf("Sorry this GL implementation (%s) does not support 3d texture extentions\n",
-        (char *)(glGetString(GL_RENDERER)));
-/*   tkQuit();*/
+ /* see if we have OpenGL 1.2 or later, for 3D texturing */
+ {
+    const char *version = (const char *) glGetString(GL_VERSION);
+    if (strncmp(version, "1.0", 3) == 0 ||
+        strncmp(version, "1.1", 3) == 0) {
+       printf("Sorry, OpenGL 1.2 or later is required\n");
+       exit(1);
+    }
  }
  
  /* if texture is supported then generate the texture */
  create3Dtexture(); 
 
- glEnable(GL_TEXTURE_3D_EXT); 
+ glEnable(GL_TEXTURE_3D); 
  /*
  glBlendFunc(GL_SRC_COLOR, GL_SRC_ALPHA);
  glEnable(GL_BLEND); 
@@ -230,7 +241,7 @@ void create3Dtexture()
  int tmp;
 
  printf("creating 3d textures...\n");
- voxels = (unsigned char  *) malloc((4*tex_width*tex_height*tex_depth));
+ voxels = (unsigned char  *) malloc((size_t)(4*tex_width*tex_height*tex_depth));
  vp=voxels;
  for (i=0;i<tex_width;i++){
     vec[0]=i;
@@ -249,39 +260,20 @@ void create3Dtexture()
 
  printf("setting up 3d texture...\n");
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- glTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_WRAP_S,     GL_REPEAT);
- glTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_WRAP_T,     GL_REPEAT);
- glTexParameteri(GL_TEXTURE_3D_EXT, GL_TEXTURE_WRAP_R_EXT, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S,     GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T,     GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R,     GL_REPEAT);
  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
 
- glTexImage3DEXT(GL_TEXTURE_3D_EXT, 0, GL_RGBA,
-                    tex_width, tex_height, tex_depth,
-                    0, GL_RGBA, GL_UNSIGNED_BYTE, voxels);
+ glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA,
+              tex_width, tex_height, tex_depth,
+              0, GL_RGBA, GL_UNSIGNED_BYTE, voxels);
  
  printf("finished setting up 3d texture image...\n");
 }
 
-int isExtSupported(char *ext)
-{
-    /* routine to find whether a specified OpenGL extension is supported */
-
-    char *c;
-    int len;
-    char *allext = (char *)(glGetString(GL_EXTENSIONS));
-
-    len = strlen(ext);
-    if (len <= 0) return 0;
-
-    c = allext;
-    while (c) {
-        if (!strncmp(c,ext,len)) return 1;
-        c = strchr(c+1,'G');
-    }
-    return 0;
-}
-
 void printHelp()
 {
   printf("\nUsage: stex3d  <cmd line options>\n"); 
@@ -396,7 +388,7 @@ void resize(int w, int h)
  glTranslatef(0,0,-5);
 }
 
-void cleanEverything(void)
+static void cleanEverything(void)
 {
 /*  free(voxels); */
 }
@@ -432,10 +424,10 @@ void KeyHandler( unsigned char key, int x, int y )
          angz-=10; 
          break;
       case 't':
-         glEnable(GL_TEXTURE_3D_EXT); 
+         glEnable(GL_TEXTURE_3D); 
          break;
       case 'T':
-         glDisable(GL_TEXTURE_3D_EXT);
+         glDisable(GL_TEXTURE_3D);
          break;
       case 's':
          glShadeModel(GL_SMOOTH);

progs/demos/teapot.c

@@ -0,0 +1,573 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include "../util/readtex.c"
+#include "shadow.c"
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen=1;
+#endif
+
+static int WIDTH=640;
+static int HEIGHT=480;
+
+#define FRAME 50
+
+#define BASESIZE 10.0
+
+#define BASERES 12
+#define TEAPOTRES 3
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+extern void shadowmatrix(GLfloat [4][4], GLfloat [4], GLfloat [4]);
+extern void findplane(GLfloat [4], GLfloat [3], GLfloat [3], GLfloat [3]);
+
+
+static int win=0;
+
+static float obs[3]={5.0,0.0,1.0};
+static float dir[3];
+static float v=0.0;
+static float alpha=-90.0;
+static float beta=90.0;
+
+static GLfloat baseshadow[4][4];
+static GLfloat lightpos[4]={2.3,0.0,3.0,1.0};
+static GLfloat lightdir[3]={-2.3,0.0,-3.0};
+static GLfloat lightalpha=0.0;
+
+static int fog=1;
+static int bfcull=1;
+static int usetex=1;
+static int help=1;
+static int joyavailable=0;
+static int joyactive=0;
+
+static GLuint t1id,t2id;
+static GLuint teapotdlist,basedlist,lightdlist;
+
+static float gettime(void)
+{
+  static clock_t told=0;
+  clock_t tnew,ris;
+
+  tnew=clock();
+
+  ris=tnew-told;
+
+  told=tnew;
+
+  return(ris/(float)CLOCKS_PER_SEC);
+}
+
+static void calcposobs(void)
+{
+  dir[0]=sin(alpha*M_PI/180.0);
+  dir[1]=cos(alpha*M_PI/180.0)*sin(beta*M_PI/180.0);
+  dir[2]=cos(beta*M_PI/180.0);
+
+  obs[0]+=v*dir[0];
+  obs[1]+=v*dir[1];
+  obs[2]+=v*dir[2];
+}
+
+static void special(int k, int x, int y)
+{
+  switch(k) {
+  case GLUT_KEY_LEFT:
+    alpha-=2.0;
+    break;
+  case GLUT_KEY_RIGHT:
+    alpha+=2.0;
+    break;
+  case GLUT_KEY_DOWN:
+    beta-=2.0;
+    break;
+  case GLUT_KEY_UP:
+    beta+=2.0;
+    break;
+  }
+}
+
+static void key(unsigned char k, int x, int y)
+{
+  switch(k) {
+  case 27:
+    exit(0);
+    break;
+    
+  case 'a':
+    v+=0.005;
+    break;
+  case 'z':
+    v-=0.005;
+    break;
+
+  case 'j':
+    joyactive=(!joyactive);
+    break;
+  case 'h':
+    help=(!help);
+    break;
+  case 'f':
+    fog=(!fog);
+    break;
+  case 't':
+    usetex=(!usetex);
+    break;
+  case 'b':
+    if(bfcull) {
+      glDisable(GL_CULL_FACE);
+      bfcull=0;
+    } else {
+      glEnable(GL_CULL_FACE);
+      bfcull=1;
+    }
+    break;
+#ifdef XMESA
+  case ' ':
+    XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+    fullscreen=(!fullscreen);
+    break;
+#endif
+  }
+}
+
+static void reshape(int w, int h) 
+{
+  WIDTH=w;
+  HEIGHT=h;
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  gluPerspective(45.0,w/(float)h,0.2,40.0);
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
+  glViewport(0,0,w,h);
+}
+
+static void printstring(void *font, char *string)
+{
+  int len,i;
+
+  len=(int)strlen(string);
+  for(i=0;i<len;i++)
+    glutBitmapCharacter(font,string[i]);
+}
+
+static void printhelp(void)
+{
+  glEnable(GL_BLEND);
+  glColor4f(0.5,0.5,0.5,0.5);
+  glRecti(40,40,600,440);
+  glDisable(GL_BLEND);
+
+  glColor3f(1.0,0.0,0.0);
+  glRasterPos2i(300,420);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"Help");
+
+  glRasterPos2i(60,390);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"h - Togle Help");
+  glRasterPos2i(60,360);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"t - Togle Textures");
+  glRasterPos2i(60,330);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"f - Togle Fog");
+  glRasterPos2i(60,300);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"b - Togle Back face culling");
+  glRasterPos2i(60,270);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"Arrow Keys - Rotate");
+  glRasterPos2i(60,240);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"a - Increase velocity");
+  glRasterPos2i(60,210);
+  printstring(GLUT_BITMAP_TIMES_ROMAN_24,"z - Decrease velocity");
+
+  glRasterPos2i(60,180);
+  if(joyavailable)
+    printstring(GLUT_BITMAP_TIMES_ROMAN_24,"j - Togle jostick control (Joystick control available)");
+  else
+    printstring(GLUT_BITMAP_TIMES_ROMAN_24,"(No Joystick control available)");
+}
+
+static void drawbase(void)
+{
+  int i,j;
+  float x,y,dx,dy;
+
+  glBindTexture(GL_TEXTURE_2D,t1id);
+
+  dx=BASESIZE/BASERES;
+  dy=-BASESIZE/BASERES;
+  for(y=BASESIZE/2.0,j=0;j<BASERES;y+=dy,j++) {
+    glBegin(GL_QUAD_STRIP);
+    glColor3f(1.0,1.0,1.0);
+    glNormal3f(0.0,0.0,1.0);
+    for(x=-BASESIZE/2.0,i=0;i<BASERES;x+=dx,i++) {
+      glTexCoord2f(x,y);
+      glVertex3f(x,y,0.0);
+
+      glTexCoord2f(x,y+dy);
+      glVertex3f(x,y+dy,0.0);
+    }
+    glEnd();
+  }
+}
+
+static void drawteapot(void)
+{
+  static float xrot=0.0;
+  static float zrot=0.0;
+
+  glPushMatrix();
+  glRotatef(lightalpha,0.0,0.0,1.0);
+  glMultMatrixf((GLfloat *)baseshadow);
+  glRotatef(-lightalpha,0.0,0.0,1.0);
+
+  glTranslatef(0.0,0.0,1.0);
+  glRotatef(xrot,1.0,0.0,0.0);
+  glRotatef(zrot,0.0,0.0,1.0);
+
+  glDisable(GL_TEXTURE_2D);
+  glDisable(GL_DEPTH_TEST);
+  glDisable(GL_LIGHTING);
+
+  glColor3f(0.0,0.0,0.0);
+  glCallList(teapotdlist);
+
+  glEnable(GL_DEPTH_TEST);
+  glEnable(GL_LIGHTING);
+  if(usetex)
+    glEnable(GL_TEXTURE_2D);
+
+  glPopMatrix();
+
+  glPushMatrix();
+  glTranslatef(0.0,0.0,1.0);
+  glRotatef(xrot,1.0,0.0,0.0);
+  glRotatef(zrot,0.0,0.0,1.0);
+
+  glCallList(teapotdlist);
+  glPopMatrix();
+
+  xrot+=2.0;
+  zrot+=1.0;
+}
+
+static void drawlight1(void)
+{
+  glPushMatrix();
+  glRotatef(lightalpha,0.0,0.0,1.0);
+  glLightfv(GL_LIGHT0,GL_POSITION,lightpos);
+  glLightfv(GL_LIGHT0,GL_SPOT_DIRECTION,lightdir);
+
+  glPopMatrix();
+}
+
+static void drawlight2(void)
+{
+  glPushMatrix();
+  glRotatef(lightalpha,0.0,0.0,1.0);
+  glTranslatef(lightpos[0],lightpos[1],lightpos[2]);
+
+  glDisable(GL_TEXTURE_2D);
+  glCallList(lightdlist);
+  if(usetex)
+    glEnable(GL_TEXTURE_2D);
+  
+  glPopMatrix();
+
+  lightalpha+=1.0;
+}
+
+static void dojoy(void)
+{
+#ifdef WIN32
+  static UINT max[2]={0,0};
+  static UINT min[2]={0xffffffff,0xffffffff},center[2];
+  MMRESULT res;
+  JOYINFO joy;
+
+  res=joyGetPos(JOYSTICKID1,&joy);
+
+  if(res==JOYERR_NOERROR) {
+    joyavailable=1;
+
+    if(max[0]<joy.wXpos)
+      max[0]=joy.wXpos;
+    if(min[0]>joy.wXpos)
+      min[0]=joy.wXpos;
+    center[0]=(max[0]+min[0])/2;
+
+    if(max[1]<joy.wYpos)
+      max[1]=joy.wYpos;
+    if(min[1]>joy.wYpos)
+      min[1]=joy.wYpos;
+    center[1]=(max[1]+min[1])/2;
+
+    if(joyactive) {
+      if(fabs(center[0]-(float)joy.wXpos)>0.1*(max[0]-min[0]))
+	alpha-=2.5*(center[0]-(float)joy.wXpos)/(max[0]-min[0]);
+      if(fabs(center[1]-(float)joy.wYpos)>0.1*(max[1]-min[1]))
+	beta+=2.5*(center[1]-(float)joy.wYpos)/(max[1]-min[1]);
+
+      if(joy.wButtons & JOY_BUTTON1)
+	v+=0.005;
+      if(joy.wButtons & JOY_BUTTON2)
+	v-=0.005;
+    }
+  } else
+    joyavailable=0;
+#endif
+}
+
+static void draw(void)
+{
+  static int count=0;
+  static char frbuf[80];
+  float fr;
+
+  dojoy();
+
+  glEnable(GL_DEPTH_TEST);
+  glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+
+  if(usetex)
+    glEnable(GL_TEXTURE_2D);
+  else
+    glDisable(GL_TEXTURE_2D);
+
+  if(fog)
+    glEnable(GL_FOG);
+  else
+    glDisable(GL_FOG);
+
+  glEnable(GL_LIGHTING);
+
+  glShadeModel(GL_SMOOTH);
+
+  glPushMatrix();
+  calcposobs();
+
+  gluLookAt(obs[0],obs[1],obs[2],
+	    obs[0]+dir[0],obs[1]+dir[1],obs[2]+dir[2],
+	    0.0,0.0,1.0);
+
+  drawlight1();
+  glCallList(basedlist);
+  drawteapot();
+  drawlight2();
+  glPopMatrix();
+  
+  if((count % FRAME)==0) {
+    fr=gettime();
+    sprintf(frbuf,"Frame rate: %f",FRAME/fr);
+  }
+
+  glDisable(GL_LIGHTING);
+  glDisable(GL_TEXTURE_2D);
+  glDisable(GL_DEPTH_TEST);
+  glDisable(GL_FOG);
+  glShadeModel(GL_FLAT);
+
+  glMatrixMode(GL_PROJECTION);
+  glLoadIdentity();
+  glOrtho(-0.5,639.5,-0.5,479.5,-1.0,1.0);
+  glMatrixMode(GL_MODELVIEW);
+  glLoadIdentity();
+
+  glColor3f(1.0,0.0,0.0);
+  glRasterPos2i(10,10);
+  printstring(GLUT_BITMAP_HELVETICA_18,frbuf);
+  glRasterPos2i(350,470);
+  printstring(GLUT_BITMAP_HELVETICA_10,"Teapot V1.2 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+  if(help)
+    printhelp();
+
+  reshape(WIDTH,HEIGHT);
+
+  glutSwapBuffers();
+
+  count++;
+}
+
+static void inittextures(void)
+{
+  glGenTextures(1,&t1id);
+  glBindTexture(GL_TEXTURE_2D,t1id);
+
+  glPixelStorei(GL_UNPACK_ALIGNMENT,4);
+  if (!LoadRGBMipmaps("../images/tile.rgb", GL_RGB)) {
+    fprintf(stderr,"Error reading a texture.\n");
+    exit(-1);
+  }
+
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
+  
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+
+  glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
+
+  glGenTextures(1,&t2id);
+  glBindTexture(GL_TEXTURE_2D,t2id);
+
+  if (!LoadRGBMipmaps("../images/bw.rgb", GL_RGB)) {
+    fprintf(stderr,"Error reading a texture.\n");
+    exit(-1);
+  }
+
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
+  
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
+  glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+
+  glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
+}
+
+static void initlight(void)
+{
+  float lamb[4]={0.2,0.2,0.2,1.0};
+  float lspec[4]={1.0,1.0,1.0,1.0};
+
+  glLightf(GL_LIGHT0,GL_SPOT_CUTOFF,70.0);
+  glLightf(GL_LIGHT0,GL_SPOT_EXPONENT,20.0);
+  glLightfv(GL_LIGHT0,GL_AMBIENT,lamb);
+  glLightfv(GL_LIGHT0,GL_SPECULAR,lspec);
+
+  glMaterialf(GL_FRONT_AND_BACK,GL_SHININESS,20.0);
+  glMaterialfv(GL_FRONT_AND_BACK,GL_SPECULAR,lspec);
+
+  glEnable(GL_LIGHT0);
+}
+
+static void initdlists(void)
+{
+  GLUquadricObj *lcone,*lbase;
+  GLfloat plane[4];
+  GLfloat v0[3]={0.0,0.0,0.0};
+  GLfloat v1[3]={1.0,0.0,0.0};
+  GLfloat v2[3]={0.0,1.0,0.0};
+
+  findplane(plane,v0,v1,v2);
+  shadowmatrix(baseshadow,plane,lightpos);
+
+  teapotdlist=glGenLists(1);
+  glNewList(teapotdlist,GL_COMPILE);
+  glRotatef(90.0,1.0,0.0,0.0);
+  glCullFace(GL_FRONT);
+  glBindTexture(GL_TEXTURE_2D,t2id);
+  glutSolidTeapot(0.75);
+  glCullFace(GL_BACK);
+  glEndList();
+
+  basedlist=glGenLists(1);
+  glNewList(basedlist,GL_COMPILE);
+  drawbase();
+  glEndList();
+
+  lightdlist=glGenLists(1);
+  glNewList(lightdlist,GL_COMPILE);
+  glDisable(GL_LIGHTING);
+ 
+  lcone=gluNewQuadric();
+  lbase=gluNewQuadric();
+  glRotatef(45.0,0.0,1.0,0.0);
+
+  glColor3f(1.0,1.0,1.0);
+  glCullFace(GL_FRONT);
+  gluDisk(lbase,0.0,0.2,12.0,1.0);
+  glCullFace(GL_BACK);
+
+  glColor3f(0.5,0.0,0.0);
+  gluCylinder(lcone,0.2,0.0,0.5,12,1);
+
+  gluDeleteQuadric(lcone);
+  gluDeleteQuadric(lbase);
+
+  glEnable(GL_LIGHTING);
+  glEndList();
+}
+
+int main(int ac, char **av)
+{
+  float fogcolor[4]={0.025,0.025,0.025,1.0};
+
+  fprintf(stderr,"Teapot V1.2\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+  /*
+    if(!SetPriorityClass(GetCurrentProcess(),REALTIME_PRIORITY_CLASS)) {
+    fprintf(stderr,"Error setting the process class.\n");
+    return 0;
+    }
+
+    if(!SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL)) {
+    fprintf(stderr,"Error setting the process priority.\n");
+    return 0;
+    }
+    */
+
+  glutInitWindowPosition(0,0);
+  glutInitWindowSize(WIDTH,HEIGHT);
+  glutInit(&ac,av);
+
+  glutInitDisplayMode(GLUT_RGB|GLUT_DEPTH|GLUT_DOUBLE);
+
+  if(!(win=glutCreateWindow("Teapot"))) {
+    fprintf(stderr,"Error, couldn't open window\n");
+	return -1;
+  }
+
+  reshape(WIDTH,HEIGHT);
+
+  glShadeModel(GL_SMOOTH);
+  glEnable(GL_DEPTH_TEST);
+  glEnable(GL_CULL_FACE);
+  glEnable(GL_TEXTURE_2D);
+
+  glEnable(GL_FOG);
+  glFogi(GL_FOG_MODE,GL_EXP2);
+  glFogfv(GL_FOG_COLOR,fogcolor);
+
+  glFogf(GL_FOG_DENSITY,0.04);
+  glHint(GL_FOG_HINT,GL_NICEST);
+  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
+
+  calcposobs();
+
+  inittextures();
+  initlight();
+
+  initdlists();
+
+  glClearColor(fogcolor[0],fogcolor[1],fogcolor[2],fogcolor[3]);
+
+  glutReshapeFunc(reshape);
+  glutDisplayFunc(draw);
+  glutKeyboardFunc(key);
+  glutSpecialFunc(special);
+  glutIdleFunc(draw);
+
+  glutMainLoop();
+
+  return 0;
+}

progs/demos/terrain.c

@@ -0,0 +1,653 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ *
+ * based on a Mikael SkiZoWalker's (MoDEL) / France (Skizo@Hol.Fr) demo
+ */
+
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265
+#endif
+
+#define heightMnt	450
+#define	lenghtXmnt	62
+#define lenghtYmnt	62
+
+#define stepXmnt     96.0
+#define stepYmnt     96.0
+
+#define WIDTH 640
+#define HEIGHT 480
+
+#define TSCALE 4
+
+#define	FRAME 50
+
+#define FOV 85
+
+static GLfloat terrain[256 * 256];
+static GLfloat terraincolor[256 * 256][3];
+
+static int win = 0;
+
+static int fog = 1;
+static int bfcull = 1;
+static int usetex = 1;
+static int poutline = 0;
+static int help = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+static float ModZMnt;
+static long GlobalMnt = 0;
+
+static int scrwidth = WIDTH;
+static int scrheight = HEIGHT;
+
+#define OBSSTARTX 992.0
+#define OBSSTARTY 103.0
+
+static float obs[3] = { OBSSTARTX, heightMnt * 1.3, OBSSTARTY };
+static float dir[3], v1[2], v2[2];
+static float v = 15.0;
+static float alpha = 75.0;
+static float beta = 90.0;
+
+static float
+gettime(void)
+{
+   static clock_t told = 0;
+   clock_t tnew, ris;
+
+   tnew = clock();
+
+   ris = tnew - told;
+
+   told = tnew;
+
+   return (ris / (float) CLOCKS_PER_SEC);
+}
+
+static void
+calcposobs(void)
+{
+   float alpha1, alpha2;
+
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[2] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[1] = cos(beta * M_PI / 180.0);
+
+   alpha1 = alpha + FOV / 2.0;
+   v1[0] = sin(alpha1 * M_PI / 180.0);
+   v1[1] = cos(alpha1 * M_PI / 180.0);
+
+   alpha2 = alpha - FOV / 2.0;
+   v2[0] = sin(alpha2 * M_PI / 180.0);
+   v2[1] = cos(alpha2 * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+
+   if (obs[1] < 0.0)
+      obs[1] = 0.0;
+}
+
+static void
+reshape(int width, int height)
+{
+   scrwidth = width;
+   scrheight = height;
+   glViewport(0, 0, (GLint) width, (GLint) height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(50.0, ((GLfloat) width / (GLfloat) height),
+		  lenghtXmnt * stepYmnt * 0.01, lenghtXmnt * stepYmnt * 0.7);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+}
+
+static int
+clipstrip(float y, float *start, float *end)
+{
+   float x1, x2, t1, t2, tmp;
+
+   if (v1[1] == 0.0) {
+      t1 = 0.0;
+      x1 = -HUGE_VAL;
+   }
+   else {
+      t1 = y / v1[1];
+      x1 = t1 * v1[0];
+   }
+
+   if (v2[1] == 0.0) {
+      t2 = 0.0;
+      x2 = HUGE_VAL;
+   }
+   else {
+      t2 = y / v2[1];
+      x2 = t2 * v2[0];
+   }
+
+   if (((x1 < -(lenghtXmnt * stepXmnt) / 2) && (t2 <= 0.0)) ||
+       ((t1 <= 0.0) && (x2 > (lenghtXmnt * stepXmnt) / 2)) ||
+       ((t1 < 0.0) && (t2 < 0.0)))
+      return 0;
+
+   if ((t1 == 0.0) && (t2 == 0.0)) {
+      if ((v1[0] < 0.0) && (v1[1] > 0.0) && (v2[0] < 0.0) && (v2[1] < 0.0)) {
+	 *start = -(lenghtXmnt * stepXmnt) / 2;
+	 *end = stepXmnt;
+	 return 1;
+      }
+      else {
+	 if ((v1[0] > 0.0) && (v1[1] < 0.0) && (v2[0] > 0.0) && (v2[1] > 0.0)) {
+	    *start = -stepXmnt;
+	    *end = (lenghtXmnt * stepXmnt) / 2;
+	    return 1;
+	 }
+	 else
+	    return 0;
+      }
+   }
+   else {
+      if (t2 < 0.0) {
+	 if (x1 < 0.0)
+	    x2 = -(lenghtXmnt * stepXmnt) / 2;
+	 else
+	    x2 = (lenghtXmnt * stepXmnt) / 2;
+      }
+
+      if (t1 < 0.0) {
+	 if (x2 < 0.0)
+	    x1 = -(lenghtXmnt * stepXmnt) / 2;
+	 else
+	    x1 = (lenghtXmnt * stepXmnt) / 2;
+      }
+   }
+
+   if (x1 > x2) {
+      tmp = x1;
+      x1 = x2;
+      x2 = tmp;
+   }
+
+   x1 -= stepXmnt;
+   if (x1 < -(lenghtXmnt * stepXmnt) / 2)
+      x1 = -(lenghtXmnt * stepXmnt) / 2;
+
+   x2 += stepXmnt;
+   if (x2 > (lenghtXmnt * stepXmnt) / 2)
+      x2 = (lenghtXmnt * stepXmnt) / 2;
+
+   *start = ((int) (x1 / stepXmnt)) * stepXmnt;
+   *end = ((int) (x2 / stepXmnt)) * stepXmnt;
+
+   return 1;
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+   glEnable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+   glColor4f(0.0, 0.0, 0.0, 0.5);
+   glRecti(40, 40, 600, 440);
+   glDisable(GL_BLEND);
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Togle Help");
+   glRasterPos2i(60, 360);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Togle Textures");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Togle Fog");
+   glRasterPos2i(60, 300);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "p - Wire frame");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "b - Togle Back face culling");
+   glRasterPos2i(60, 240);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+   glRasterPos2i(60, 180);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+
+   glRasterPos2i(60, 150);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "j - Togle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "(No Joystick control available)");
+}
+
+static void
+drawterrain(void)
+{
+   int h, i, idx, ox, oy;
+   float j, k, start, end;
+
+   ox = (int) (obs[0] / stepXmnt);
+   oy = (int) (obs[2] / stepYmnt);
+   GlobalMnt = ((ox * TSCALE) & 255) + ((oy * TSCALE) & 255) * 256;
+
+   glPushMatrix();
+   glTranslatef((float) ox * stepXmnt, 0, (float) oy * stepYmnt);
+
+   for (h = 0, k = -(lenghtYmnt * stepYmnt) / 2; h < lenghtYmnt;
+	k += stepYmnt, h++) {
+      if (!clipstrip(k, &start, &end))
+	 continue;
+
+      glBegin(GL_TRIANGLE_STRIP);	/* I hope that the optimizer will be able to improve this code */
+      for (i = (int) (lenghtXmnt / 2 + start / stepXmnt), j = start; j <= end;
+	   j += stepXmnt, i++) {
+	 idx = (i * TSCALE + h * 256 * TSCALE + GlobalMnt) & 65535;
+	 glColor3fv(terraincolor[idx]);
+	 glTexCoord2f((ox + i) / 8.0, (oy + h) / 8.0);
+	 glVertex3f(j, terrain[idx], k);
+
+	 idx =
+	    (i * TSCALE + h * 256 * TSCALE + 256 * TSCALE +
+	     GlobalMnt) & 65535;
+	 glColor3fv(terraincolor[idx]);
+	 glTexCoord2f((ox + i) / 8.0, (oy + h + 1) / 8.0);
+	 glVertex3f(j, terrain[idx], k + stepYmnt);
+      }
+      glEnd();
+   }
+
+   glDisable(GL_CULL_FACE);
+   glDisable(GL_TEXTURE_2D);
+   glEnable(GL_BLEND);
+   glBegin(GL_QUADS);
+   glColor4f(0.1, 0.7, 1.0, 0.4);
+   glVertex3f(-(lenghtXmnt * stepXmnt) / 2.0, heightMnt * 0.6,
+	      -(lenghtYmnt * stepYmnt) / 2.0);
+   glVertex3f(-(lenghtXmnt * stepXmnt) / 2.0, heightMnt * 0.6,
+	      (lenghtYmnt * stepYmnt) / 2.0);
+   glVertex3f((lenghtXmnt * stepXmnt) / 2.0, heightMnt * 0.6,
+	      (lenghtYmnt * stepYmnt) / 2.0);
+   glVertex3f((lenghtXmnt * stepXmnt) / 2.0, heightMnt * 0.6,
+	      -(lenghtYmnt * stepYmnt) / 2.0);
+   glEnd();
+   glDisable(GL_BLEND);
+   if (bfcull)
+      glEnable(GL_CULL_FACE);
+   glEnable(GL_TEXTURE_2D);
+
+   glPopMatrix();
+
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha +=
+	       2.5 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.5 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.5;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.5;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+drawscene(void)
+{
+   static int count = 0;
+   static char frbuf[80];
+   float fr;
+
+   dojoy();
+
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+
+   if (usetex)
+      glEnable(GL_TEXTURE_2D);
+   else
+      glDisable(GL_TEXTURE_2D);
+
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+
+   calcposobs();
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 1.0, 0.0);
+
+   drawterrain();
+   glPopMatrix();
+
+   if ((count % FRAME) == 0) {
+      fr = gettime();
+      sprintf(frbuf, "Frame rate: %.3f", FRAME / fr);
+   }
+
+   glDisable(GL_TEXTURE_2D);
+   glDisable(GL_DEPTH_TEST);
+   glDisable(GL_FOG);
+   glShadeModel(GL_FLAT);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(350, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Terrain V1.2 Written by David Bucciarelli (tech.hmw@plus.it)");
+   glRasterPos2i(434, 457);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Based on a Mickael's demo (Skizo@Hol.Fr)");
+
+   if (help)
+      printhelp();
+
+   reshape(scrwidth, scrheight);
+
+   glutSwapBuffers();
+
+   count++;
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+   switch (k) {
+   case 27:
+      exit(0);
+      break;
+   case 'a':
+      v += 0.5;
+      break;
+   case 'z':
+      v -= 0.5;
+      break;
+   case 'p':
+      if (poutline) {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+	 poutline = 0;
+      }
+      else {
+	 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+	 poutline = 1;
+      }
+      break;
+   case 'j':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+   case 't':
+      usetex = (!usetex);
+      break;
+   case 'b':
+      if (bfcull) {
+	 glDisable(GL_CULL_FACE);
+	 bfcull = 0;
+      }
+      else {
+	 glEnable(GL_CULL_FACE);
+	 bfcull = 1;
+      }
+      break;
+#ifdef XMESA
+   case ' ':
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      fullscreen = (!fullscreen);
+      break;
+#endif
+   }
+}
+
+static void
+special(int k, int x, int y)
+{
+   switch (k) {
+   case GLUT_KEY_LEFT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+calccolor(GLfloat height, GLfloat c[3])
+{
+   GLfloat color[4][3] = {
+      {1.0, 1.0, 1.0},
+      {0.0, 0.8, 0.0},
+      {1.0, 1.0, 0.3},
+      {0.0, 0.0, 0.8}
+   };
+   GLfloat fact;
+
+   height = height * (1.0 / 255.0);
+
+   if (height >= 0.9) {
+      c[0] = color[0][0];
+      c[1] = color[0][1];
+      c[2] = color[0][2];
+      return;
+   }
+
+   if ((height < 0.9) && (height >= 0.7)) {
+      fact = (height - 0.7) * 5.0;
+      c[0] = fact * color[0][0] + (1.0 - fact) * color[1][0];
+      c[1] = fact * color[0][1] + (1.0 - fact) * color[1][1];
+      c[2] = fact * color[0][2] + (1.0 - fact) * color[1][2];
+      return;
+   }
+
+   if ((height < 0.7) && (height >= 0.6)) {
+      fact = (height - 0.6) * 10.0;
+      c[0] = fact * color[1][0] + (1.0 - fact) * color[2][0];
+      c[1] = fact * color[1][1] + (1.0 - fact) * color[2][1];
+      c[2] = fact * color[1][2] + (1.0 - fact) * color[2][2];
+      return;
+   }
+
+   if ((height < 0.6) && (height >= 0.5)) {
+      fact = (height - 0.5) * 10.0;
+      c[0] = fact * color[2][0] + (1.0 - fact) * color[3][0];
+      c[1] = fact * color[2][1] + (1.0 - fact) * color[3][1];
+      c[2] = fact * color[2][2] + (1.0 - fact) * color[3][2];
+      return;
+   }
+
+   c[0] = color[3][0];
+   c[1] = color[3][1];
+   c[2] = color[3][2];
+}
+
+static void
+loadpic(void)
+{
+   GLubyte bufferter[256 * 256], terrainpic[256 * 256];
+   FILE *FilePic;
+   int i, tmp;
+   GLenum gluerr;
+
+   if ((FilePic = fopen("terrain.dat", "r")) == NULL) {
+      fprintf(stderr, "Error loading Mnt.bin\n");
+      exit(-1);
+   }
+   fread(bufferter, 256 * 256, 1, FilePic);
+   fclose(FilePic);
+
+   for (i = 0; i < (256 * 256); i++) {
+      terrain[i] = (bufferter[i] * (heightMnt / 255.0f));
+      calccolor((GLfloat) bufferter[i], terraincolor[i]);
+      tmp = (((int) bufferter[i]) + 96);
+      terrainpic[i] = (tmp > 255) ? 255 : tmp;
+   }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   if ((gluerr = gluBuild2DMipmaps(GL_TEXTURE_2D, 1, 256, 256, GL_LUMINANCE,
+				   GL_UNSIGNED_BYTE,
+				   (GLvoid *) (&terrainpic[0])))) {
+      fprintf(stderr, "GLULib%s\n", gluErrorString(gluerr));
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+   glEnable(GL_TEXTURE_2D);
+}
+
+static void
+init(void)
+{
+   float fogcolor[4] = { 0.6, 0.7, 0.7, 1.0 };
+
+   glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+   glClearDepth(1.0);
+   glDepthFunc(GL_LEQUAL);
+   glShadeModel(GL_SMOOTH);
+   glEnable(GL_DEPTH_TEST);
+   glEnable(GL_CULL_FACE);
+
+   glDisable(GL_BLEND);
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP2);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+   glFogf(GL_FOG_DENSITY, 0.0007);
+#ifdef FX
+   glHint(GL_FOG_HINT, GL_NICEST);
+#endif
+
+   reshape(scrwidth, scrheight);
+}
+
+
+int
+main(int ac, char **av)
+{
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTH, HEIGHT);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+
+   if (!(win = glutCreateWindow("Terrain"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      return -1;
+   }
+
+   ModZMnt = 0.0f;
+   loadpic();
+
+   init();
+
+#ifndef FX
+   glDisable(GL_TEXTURE_2D);
+   usetex = 0;
+#endif
+
+   glutReshapeFunc(reshape);
+   glutDisplayFunc(drawscene);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+   glutIdleFunc(drawscene);
+
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/tessdemo.c

@@ -1,48 +1,7 @@
-/* $Id: tessdemo.c,v 1.3 1999/11/04 04:00:42 gareth Exp $ */
+/* $Id: tessdemo.c,v 1.8 2000/07/11 14:11:58 brianp Exp $ */
 
 /*
  * A demo of the GLU polygon tesselation functions written by Bogdan Sikorski.
- * This demo isn't built by the Makefile because it needs GLUT.  After you've
- * installed GLUT you can try this demo.
- * Here's the command for IRIX, for example:
-   cc -g -ansi -prototypes -fullwarn -float -I../include -DSHM tess_demo.c -L../lib -lglut -lMesaGLU -lMesaGL -lm -lX11 -lXext -lXmu -lfpe -lXext -o tess_demo
- */
-
-/*
- * Updated for GLU 1.3 tessellation by Gareth Hughes <garethh@bell-labs.com>
- */
-
-/*
- * $Log: tessdemo.c,v $
- * Revision 1.3  1999/11/04 04:00:42  gareth
- * Updated demo for new GLU 1.3 tessellation.  Added optimized rendering
- * by saving the output of the tessellation into display lists.
- *
- * Revision 1.2  1999/09/19 20:09:00  tanner
- *
- * lots of autoconf updates
- *
- * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
- * Imported sources
- *
- * Revision 3.5  1999/03/28 18:24:37  brianp
- * minor clean-up
- *
- * Revision 3.4  1999/02/14 03:37:07  brianp
- * fixed callback problem
- *
- * Revision 3.3  1998/07/26 01:25:26  brianp
- * removed include of gl.h and glu.h
- *
- * Revision 3.2  1998/06/29 02:37:30  brianp
- * minor changes for Windows (Ted Jump)
- *
- * Revision 3.1  1998/06/09 01:53:49  brianp
- * main() should return an int
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
  */
 
 
@@ -51,405 +10,322 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define MAX_POINTS	256
-#define MAX_CONTOURS	32
-#define MAX_TRIANGLES	256
+#define MAX_POINTS 200
+#define MAX_CONTOURS 50
 
-#ifndef GLCALLBACK
-#ifdef CALLBACK
-#define GLCALLBACK CALLBACK
-#else
-#define GLCALLBACK
-#endif
-#endif
+static int menu;
+typedef enum
+{ QUIT, TESSELATE, CLEAR }
+menu_entries;
 
-typedef enum{ QUIT, TESSELATE, CLEAR } menu_entries;
-typedef enum{ DEFINE, TESSELATED } mode_type;
+typedef enum
+{ DEFINE, TESSELATED }
+mode_type;
 
-static GLsizei		width, height;
-static GLuint		contour_cnt;
-static GLuint		triangle_cnt;
-
-static mode_type 	mode;
-static int		menu;
-
-static GLuint		list_start;
-
-static GLfloat		edge_color[3];
-
-static struct
+struct
 {
-   GLint	p[MAX_POINTS][2];
-   GLuint	point_cnt;
-} contours[MAX_CONTOURS];
+   GLint p[MAX_POINTS][2];
+   GLuint point_cnt;
+}
+contours[MAX_CONTOURS];
 
-static struct
+static GLuint contour_cnt;
+static GLsizei width, height;
+static mode_type mode;
+
+struct
 {
-   GLsizei	no;
-   GLint	p[3][2];
-   GLclampf	color[3][3];
-} triangles[MAX_TRIANGLES];
+   GLsizei no;
+   GLfloat color[3];
+   GLint p[3][2];
+   GLclampf p_color[3][3];
+}
+triangle;
 
 
-
-void GLCALLBACK my_error( GLenum err )
+static void GLCALLBACK
+my_error(GLenum err)
 {
-   int		len, i;
-   char const	*str;
+   int len, i;
+   char const *str;
 
-   glColor3f( 0.9, 0.9, 0.9 );
-   glRasterPos2i( 5, 5 );
+   glColor3f(0.9, 0.9, 0.9);
+   glRasterPos2i(5, 5);
+   str = (const char *) gluErrorString(err);
+   len = strlen(str);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(GLUT_BITMAP_9_BY_15, str[i]);
+}
 
-   str = (const char *) gluErrorString( err );
-   len = strlen( str );
 
-   for ( i = 0 ; i < len ; i++ ) {
-      glutBitmapCharacter( GLUT_BITMAP_9_BY_15, str[i] );
+static void GLCALLBACK
+begin_callback(GLenum mode)
+{
+   triangle.no = 0;
+}
+
+
+static void GLCALLBACK
+edge_callback(GLenum flag)
+{
+   if (flag == GL_TRUE) {
+      triangle.color[0] = 1.0;
+      triangle.color[1] = 1.0;
+      triangle.color[2] = 0.5;
+   }
+   else {
+      triangle.color[0] = 1.0;
+      triangle.color[1] = 0.0;
+      triangle.color[2] = 0.0;
    }
 }
 
-void GLCALLBACK begin_callback( GLenum mode )
+
+static void GLCALLBACK
+end_callback()
 {
-   /* Allow multiple triangles to be output inside the begin/end pair. */
-   triangle_cnt = 0;
-   triangles[triangle_cnt].no = 0;
-}
-
-void GLCALLBACK edge_callback( GLenum flag )
-{
-   /* Persist the edge flag across triangles. */
-   if ( flag == GL_TRUE )
-   {
-      edge_color[0] = 1.0;
-      edge_color[1] = 1.0;
-      edge_color[2] = 0.5;
-   }
-   else
-   {
-      edge_color[0] = 1.0;
-      edge_color[1] = 0.0;
-      edge_color[2] = 0.0;
-   }
-}
-
-void GLCALLBACK end_callback()
-{
-   GLint	i;
-
-   glBegin( GL_LINES );
-
-   /* Output the three edges of each triangle as lines colored
-      according to their edge flag. */
-   for ( i = 0 ; i < triangle_cnt ; i++ )
-   {
-      glColor3f( triangles[i].color[0][0],
-		 triangles[i].color[0][1],
-		 triangles[i].color[0][2] );
-
-      glVertex2i( triangles[i].p[0][0], triangles[i].p[0][1] );
-      glVertex2i( triangles[i].p[1][0], triangles[i].p[1][1] );
-
-      glColor3f( triangles[i].color[1][0],
-		 triangles[i].color[1][1],
-		 triangles[i].color[1][2] );
-
-      glVertex2i( triangles[i].p[1][0], triangles[i].p[1][1] );
-      glVertex2i( triangles[i].p[2][0], triangles[i].p[2][1] );
-
-      glColor3f( triangles[i].color[2][0],
-		 triangles[i].color[2][1],
-		 triangles[i].color[2][2] );
-
-      glVertex2i( triangles[i].p[2][0], triangles[i].p[2][1] );
-      glVertex2i( triangles[i].p[0][0], triangles[i].p[0][1] );
-   }
-
+   glBegin(GL_LINES);
+   glColor3f(triangle.p_color[0][0], triangle.p_color[0][1],
+	     triangle.p_color[0][2]);
+   glVertex2i(triangle.p[0][0], triangle.p[0][1]);
+   glVertex2i(triangle.p[1][0], triangle.p[1][1]);
+   glColor3f(triangle.p_color[1][0], triangle.p_color[1][1],
+	     triangle.p_color[1][2]);
+   glVertex2i(triangle.p[1][0], triangle.p[1][1]);
+   glVertex2i(triangle.p[2][0], triangle.p[2][1]);
+   glColor3f(triangle.p_color[2][0], triangle.p_color[2][1],
+	     triangle.p_color[2][2]);
+   glVertex2i(triangle.p[2][0], triangle.p[2][1]);
+   glVertex2i(triangle.p[0][0], triangle.p[0][1]);
    glEnd();
 }
 
-void GLCALLBACK vertex_callback( void *data )
+
+static void GLCALLBACK
+vertex_callback(void *data)
 {
-   GLsizei	no;
-   GLint	*p;
+   GLsizei no;
+   GLint *p;
 
    p = (GLint *) data;
-   no = triangles[triangle_cnt].no;
-
-   triangles[triangle_cnt].p[no][0] = p[0];
-   triangles[triangle_cnt].p[no][1] = p[1];
-
-   triangles[triangle_cnt].color[no][0] = edge_color[0];
-   triangles[triangle_cnt].color[no][1] = edge_color[1];
-   triangles[triangle_cnt].color[no][2] = edge_color[2];
-
-   /* After every three vertices, initialize the next triangle. */
-   if ( ++(triangles[triangle_cnt].no) == 3 )
-   {
-      triangle_cnt++;
-      triangles[triangle_cnt].no = 0;
-   }
+   no = triangle.no;
+   triangle.p[no][0] = p[0];
+   triangle.p[no][1] = p[1];
+   triangle.p_color[no][0] = triangle.color[0];
+   triangle.p_color[no][1] = triangle.color[1];
+   triangle.p_color[no][2] = triangle.color[2];
+   ++(triangle.no);
 }
 
-void set_screen_wh( GLsizei w, GLsizei h )
+
+static void
+set_screen_wh(GLsizei w, GLsizei h)
 {
    width = w;
    height = h;
 }
 
-void tesse( void )
-{
-   GLUtesselator	*tobj;
-   GLdouble		data[3];
-   GLuint		i, j, point_cnt;
 
-   list_start = glGenLists( 2 );
+static void
+tesse(void)
+{
+   GLUtriangulatorObj *tobj;
+   GLdouble data[3];
+   GLuint i, j, point_cnt;
 
    tobj = gluNewTess();
-
-   if ( tobj != NULL )
-   {
-      gluTessCallback( tobj, GLU_BEGIN, glBegin );
-      gluTessCallback( tobj, GLU_VERTEX, glVertex2iv );
-      gluTessCallback( tobj, GLU_END, glEnd );
-      gluTessCallback( tobj, GLU_ERROR, my_error );
-
-      glNewList( list_start, GL_COMPILE );
-      gluBeginPolygon( tobj );
-
-      for ( j = 0 ; j <= contour_cnt ; j++ )
-      {
+   if (tobj != NULL) {
+      glClear(GL_COLOR_BUFFER_BIT);
+      glColor3f(0.7, 0.7, 0.0);
+      gluTessCallback(tobj, GLU_BEGIN, glBegin);
+      gluTessCallback(tobj, GLU_END, glEnd);
+      gluTessCallback(tobj, GLU_ERROR, my_error);
+      gluTessCallback(tobj, GLU_VERTEX, glVertex2iv);
+      gluBeginPolygon(tobj);
+      for (j = 0; j <= contour_cnt; j++) {
 	 point_cnt = contours[j].point_cnt;
-	 gluNextContour( tobj, GLU_UNKNOWN );
-
-	 for ( i = 0 ; i < point_cnt ; i++ )
-	 {
-	    data[0] = (GLdouble)( contours[j].p[i][0] );
-	    data[1] = (GLdouble)( contours[j].p[i][1] );
+	 gluNextContour(tobj, GLU_UNKNOWN);
+	 for (i = 0; i < point_cnt; i++) {
+	    data[0] = (GLdouble) (contours[j].p[i][0]);
+	    data[1] = (GLdouble) (contours[j].p[i][1]);
 	    data[2] = 0.0;
-	    gluTessVertex( tobj, data, contours[j].p[i] );
+	    gluTessVertex(tobj, data, contours[j].p[i]);
 	 }
       }
-
-      gluEndPolygon( tobj );
-      glEndList();
-
-      gluTessCallback( tobj, GLU_BEGIN, begin_callback );
-      gluTessCallback( tobj, GLU_VERTEX, vertex_callback );
-      gluTessCallback( tobj, GLU_END, end_callback );
-      gluTessCallback( tobj, GLU_EDGE_FLAG, edge_callback );
-
-      glNewList( list_start + 1, GL_COMPILE );
-      gluBeginPolygon( tobj );
-
-      for ( j = 0 ; j <= contour_cnt ; j++ )
-      {
+      gluEndPolygon(tobj);
+      glLineWidth(2.0);
+      gluTessCallback(tobj, GLU_BEGIN, begin_callback);
+      gluTessCallback(tobj, GLU_END, end_callback);
+      gluTessCallback(tobj, GLU_VERTEX, vertex_callback);
+      gluTessCallback(tobj, GLU_EDGE_FLAG, edge_callback);
+      gluBeginPolygon(tobj);
+      for (j = 0; j <= contour_cnt; j++) {
 	 point_cnt = contours[j].point_cnt;
-	 gluNextContour( tobj, GLU_UNKNOWN );
-
-	 for ( i = 0 ; i < point_cnt ; i++ )
-	 {
-	    data[0] = (GLdouble)( contours[j].p[i][0] );
-	    data[1] = (GLdouble)( contours[j].p[i][1] );
+	 gluNextContour(tobj, GLU_UNKNOWN);
+	 for (i = 0; i < point_cnt; i++) {
+	    data[0] = (GLdouble) (contours[j].p[i][0]);
+	    data[1] = (GLdouble) (contours[j].p[i][1]);
 	    data[2] = 0.0;
-	    gluTessVertex( tobj, data, contours[j].p[i] );
+	    gluTessVertex(tobj, data, contours[j].p[i]);
 	 }
       }
-
-      gluEndPolygon( tobj );
-      glEndList();
-
-      gluDeleteTess( tobj );
-
-      glutMouseFunc( NULL );
+      gluEndPolygon(tobj);
+      gluDeleteTess(tobj);
+      glutMouseFunc(NULL);
+      glColor3f(1.0, 1.0, 0.0);
+      glLineWidth(1.0);
       mode = TESSELATED;
    }
 }
 
-void left_down( int x1, int y1 )
+
+static void
+left_down(int x1, int y1)
 {
-   GLint	P[2];
-   GLuint	point_cnt;
+   GLint P[2];
+   GLuint point_cnt;
 
    /* translate GLUT into GL coordinates */
-
    P[0] = x1;
    P[1] = height - y1;
-
    point_cnt = contours[contour_cnt].point_cnt;
-
    contours[contour_cnt].p[point_cnt][0] = P[0];
    contours[contour_cnt].p[point_cnt][1] = P[1];
-
-   glBegin( GL_LINES );
-
-   if ( point_cnt )
-   {
-      glVertex2iv( contours[contour_cnt].p[point_cnt-1] );
-      glVertex2iv( P );
+   glBegin(GL_LINES);
+   if (point_cnt) {
+      glVertex2iv(contours[contour_cnt].p[point_cnt - 1]);
+      glVertex2iv(P);
    }
-   else
-   {
-      glVertex2iv( P );
-      glVertex2iv( P );
+   else {
+      glVertex2iv(P);
+      glVertex2iv(P);
    }
-
    glEnd();
    glFinish();
-
-   contours[contour_cnt].point_cnt++;
+   ++(contours[contour_cnt].point_cnt);
 }
 
-void middle_down( int x1, int y1 )
+
+static void
+middle_down(int x1, int y1)
 {
-   GLuint	point_cnt;
-   (void) x1;
-   (void) y1;
+   GLuint point_cnt;
 
    point_cnt = contours[contour_cnt].point_cnt;
-
-   if ( point_cnt > 2 )
-   {
-      glBegin( GL_LINES );
-
-      glVertex2iv( contours[contour_cnt].p[0] );
-      glVertex2iv( contours[contour_cnt].p[point_cnt-1] );
-
+   if (point_cnt > 2) {
+      glBegin(GL_LINES);
+      glVertex2iv(contours[contour_cnt].p[0]);
+      glVertex2iv(contours[contour_cnt].p[point_cnt - 1]);
       contours[contour_cnt].p[point_cnt][0] = -1;
-
       glEnd();
       glFinish();
-
       contour_cnt++;
       contours[contour_cnt].point_cnt = 0;
    }
 }
 
-void mouse_clicked( int button, int state, int x, int y )
-{
-   x -= x%10;
-   y -= y%10;
 
-   switch ( button )
-   {
+static void
+mouse_clicked(int button, int state, int x, int y)
+{
+   x -= x % 10;
+   y -= y % 10;
+   switch (button) {
    case GLUT_LEFT_BUTTON:
-      if ( state == GLUT_DOWN ) {
-	 left_down( x, y );
-      }
+      if (state == GLUT_DOWN)
+	 left_down(x, y);
       break;
    case GLUT_MIDDLE_BUTTON:
-      if ( state == GLUT_DOWN ) {
-	 middle_down( x, y );
-      }
+      if (state == GLUT_DOWN)
+	 middle_down(x, y);
       break;
    }
 }
 
-void display( void )
+
+static void
+display(void)
 {
-   GLuint i,j;
+   GLuint i, j;
    GLuint point_cnt;
 
-   glClear( GL_COLOR_BUFFER_BIT );
-
-   switch ( mode )
-   {
+   glClear(GL_COLOR_BUFFER_BIT);
+   switch (mode) {
    case DEFINE:
       /* draw grid */
-      glColor3f( 0.6, 0.5, 0.5 );
-
-      glBegin( GL_LINES );
-
-      for ( i = 0 ; i < width ; i += 10 )
-      {
-	 for ( j = 0 ; j < height ; j += 10 )
-	 {
-	    glVertex2i( 0, j );
-	    glVertex2i( width, j );
-	    glVertex2i( i, height );
-	    glVertex2i( i, 0 );
+      glColor3f(0.6, 0.5, 0.5);
+      glBegin(GL_LINES);
+      for (i = 0; i < width; i += 10)
+	 for (j = 0; j < height; j += 10) {
+	    glVertex2i(0, j);
+	    glVertex2i(width, j);
+	    glVertex2i(i, height);
+	    glVertex2i(i, 0);
 	 }
-      }
-
-      glColor3f( 1.0, 1.0, 0.0 );
-
-      for ( i = 0 ; i <= contour_cnt ; i++ )
-      {
+      glEnd();
+      glColor3f(1.0, 1.0, 0.0);
+      for (i = 0; i <= contour_cnt; i++) {
 	 point_cnt = contours[i].point_cnt;
-
-	 glBegin( GL_LINES );
-
-	 switch ( point_cnt )
-	 {
+	 glBegin(GL_LINES);
+	 switch (point_cnt) {
 	 case 0:
 	    break;
 	 case 1:
-	    glVertex2iv( contours[i].p[0] );
-	    glVertex2iv( contours[i].p[0] );
+	    glVertex2iv(contours[i].p[0]);
+	    glVertex2iv(contours[i].p[0]);
 	    break;
 	 case 2:
-	    glVertex2iv( contours[i].p[0] );
-	    glVertex2iv( contours[i].p[1] );
+	    glVertex2iv(contours[i].p[0]);
+	    glVertex2iv(contours[i].p[1]);
 	    break;
 	 default:
 	    --point_cnt;
-	    for ( j = 0 ; j < point_cnt ; j++ )
-	    {
-	       glVertex2iv( contours[i].p[j] );
-	       glVertex2iv( contours[i].p[j+1] );
+	    for (j = 0; j < point_cnt; j++) {
+	       glVertex2iv(contours[i].p[j]);
+	       glVertex2iv(contours[i].p[j + 1]);
 	    }
-	    if ( contours[i].p[j+1][0] == -1 )
-	    {
-	       glVertex2iv( contours[i].p[0] );
-	       glVertex2iv( contours[i].p[j] );
+	    if (contours[i].p[j + 1][0] == -1) {
+	       glVertex2iv(contours[i].p[0]);
+	       glVertex2iv(contours[i].p[j]);
 	    }
 	    break;
 	 }
-
 	 glEnd();
       }
-
       glFinish();
       break;
-
    case TESSELATED:
-      /* draw triangles */
-      glColor3f( 0.7, 0.7, 0.0 );
-      glCallList( list_start );
-
-      glLineWidth( 2.0 );
-      glCallList( list_start + 1 );
-      glLineWidth( 1.0 );
-
-      glFlush();
+      /* draw lines */
+      tesse();
       break;
    }
 
-   glColor3f( 1.0, 1.0, 0.0 );
+   glColor3f(1.0, 1.0, 0.0);
 }
 
-void clear( void )
+
+static void
+clear(void)
 {
    contour_cnt = 0;
    contours[0].point_cnt = 0;
-   triangle_cnt = 0;
-
-   glutMouseFunc( mouse_clicked );
-
+   glutMouseFunc(mouse_clicked);
    mode = DEFINE;
-
-   glDeleteLists( list_start, 2 );
-   list_start = 0;
+   display();
 }
 
-void quit( void )
+
+static void
+quit(void)
 {
-   exit( 0 );
+   exit(0);
 }
 
-void menu_selected( int entry )
+
+static void
+menu_selected(int entry)
 {
-   switch ( entry )
-   {
+   switch (entry) {
    case CLEAR:
       clear();
       break;
@@ -460,99 +336,87 @@ void menu_selected( int entry )
       quit();
       break;
    }
-
-   glutPostRedisplay();
 }
 
-void key_pressed( unsigned char key, int x, int y )
-{
-   (void) x;
-   (void) y;
 
-   switch ( key )
-   {
-   case 'c':
-   case 'C':
-      clear();
-      break;
+static void
+key_pressed(unsigned char key, int x, int y)
+{
+   switch (key) {
    case 't':
    case 'T':
       tesse();
+      glFinish();
       break;
    case 'q':
    case 'Q':
       quit();
       break;
+   case 'c':
+   case 'C':
+      clear();
+      break;
    }
-
-   glutPostRedisplay();
 }
 
-void myinit( void )
+
+static void
+myinit(void)
 {
-   /* clear background to gray */
-   glClearColor( 0.4, 0.4, 0.4, 0.0 );
-   glShadeModel( GL_FLAT );
-   glPolygonMode( GL_FRONT, GL_FILL );
-
-   menu = glutCreateMenu( menu_selected );
-
-   glutAddMenuEntry( "clear", CLEAR );
-   glutAddMenuEntry( "tesselate", TESSELATE );
-   glutAddMenuEntry( "quit", QUIT );
-
-   glutAttachMenu( GLUT_RIGHT_BUTTON );
-
-   glutMouseFunc( mouse_clicked );
-   glutKeyboardFunc( key_pressed );
+/*  clear background to gray	*/
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+   glShadeModel(GL_FLAT);
 
+   menu = glutCreateMenu(menu_selected);
+   glutAddMenuEntry("clear", CLEAR);
+   glutAddMenuEntry("tesselate", TESSELATE);
+   glutAddMenuEntry("quit", QUIT);
+   glutAttachMenu(GLUT_RIGHT_BUTTON);
+   glutMouseFunc(mouse_clicked);
+   glutKeyboardFunc(key_pressed);
    contour_cnt = 0;
+   glPolygonMode(GL_FRONT, GL_FILL);
    mode = DEFINE;
 }
 
-static void reshape( GLsizei w, GLsizei h )
+
+static void
+reshape(GLsizei w, GLsizei h)
 {
-   glViewport( 0, 0, w, h );
-
-   glMatrixMode( GL_PROJECTION );
+   glViewport(0, 0, w, h);
+   glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
-   glOrtho( 0.0, (GLdouble)w, 0.0, (GLdouble)h, -1.0, 1.0 );
-
-   glMatrixMode( GL_MODELVIEW );
+   glOrtho(0.0, (GLdouble) w, 0.0, (GLdouble) h, -1.0, 1.0);
+   glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
-
-   set_screen_wh( w, h );
+   set_screen_wh(w, h);
 }
 
 
-static void usage( void )
+static void
+usage(void)
 {
-   printf( "Use left mouse button to place vertices.\n" );
-   printf( "Press middle mouse button when done.\n" );
-   printf( "Select tesselate from the pop-up menu.\n" );
+   printf("Use left mouse button to place vertices.\n");
+   printf("Press middle mouse button when done.\n");
+   printf("Select tesselate from the pop-up menu.\n");
 }
 
 
-/*
- * Main Loop
- * Open window with initial window size, title bar,
- * RGBA display mode, and handle input events.
+/*  Main Loop
+ *  Open window with initial window size, title bar, 
+ *  RGBA display mode, and handle input events.
  */
-int main( int argc, char **argv )
+int
+main(int argc, char **argv)
 {
-    usage();
-
-    glutInit( &argc, argv );
-    glutInitDisplayMode( GLUT_SINGLE | GLUT_RGB );
-    glutInitWindowSize( 400, 400 );
-    glutCreateWindow( argv[0] );
-
-    myinit();
-
-    glutDisplayFunc( display );
-    glutReshapeFunc( reshape );
-
-    glutMainLoop();
-
-    return 0;
+   usage();
+   glutInit(&argc, argv);
+   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
+   glutInitWindowSize(400, 400);
+   glutCreateWindow(argv[0]);
+   myinit();
+   glutDisplayFunc(display);
+   glutReshapeFunc(reshape);
+   glutMainLoop();
+   return 0;
 }

progs/demos/texdown.c

@@ -0,0 +1,387 @@
+/* $Id: texdown.c,v 1.3 2000/03/29 18:02:52 brianp Exp $ */
+
+/*
+ * 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.
+ */
+
+
+/*
+ * texdown
+ *
+ * Measure texture download speed.
+ * Use keyboard to change texture size, format, datatype, scale/bias,
+ * subimageload, etc.
+ *
+ * Brian Paul  28 January 2000
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glut.h>
+
+
+static GLsizei MaxSize = 1024;
+static GLsizei TexWidth = 256, TexHeight = 256, TexBorder = 0;
+static GLboolean ScaleAndBias = GL_FALSE;
+static GLboolean SubImage = GL_FALSE;
+static GLdouble DownloadRate = 0.0;  /* texels/sec */
+
+static GLuint Mode = 0;
+
+
+#define NUM_FORMATS 4
+struct FormatRec {
+   GLenum Format;
+   GLenum Type;
+   GLenum IntFormat;
+   GLint TexelSize;
+};
+
+
+static const struct FormatRec FormatTable[NUM_FORMATS] = {
+  /* Format   Type                         IntFormat   TexelSize */
+   { GL_RGB,  GL_UNSIGNED_BYTE,            GL_RGB,         3    },
+   { GL_RGBA, GL_UNSIGNED_BYTE,            GL_RGBA,        4    },
+   { GL_RGBA, GL_UNSIGNED_BYTE,            GL_RGB,         4    },
+   { GL_RGB,  GL_UNSIGNED_SHORT_5_6_5,     GL_RGB,         2    },
+};
+static GLint Format;
+
+
+static int
+BytesPerTexel(GLint format)
+{
+   return FormatTable[format].TexelSize;
+}
+
+
+static const char *
+FormatStr(GLenum format)
+{
+   switch (format) {
+      case GL_RGB:
+         return "GL_RGB";
+      case GL_RGBA:
+         return "GL_RGBA";
+      default:
+         return "";
+   }
+}
+
+
+static const char *
+TypeStr(GLenum type)
+{
+   switch (type) {
+      case GL_UNSIGNED_BYTE:
+         return "GL_UNSIGNED_BYTE";
+      case GL_UNSIGNED_SHORT:
+         return "GL_UNSIGNED_SHORT";
+      case GL_UNSIGNED_SHORT_5_6_5:
+         return "GL_UNSIGNED_SHORT_5_6_5";
+      case GL_UNSIGNED_SHORT_5_6_5_REV:
+         return "GL_UNSIGNED_SHORT_5_6_5_REV";
+      default:
+         return "";
+   }
+}
+
+
+static void
+MeasureDownloadRate(void)
+{
+   const int w = TexWidth + 2 * TexBorder;
+   const int h = TexHeight + 2 * TexBorder;
+   const int bytes = w * h * BytesPerTexel(Format);
+   GLubyte *texImage, *getImage;
+   GLdouble t0, t1, time;
+   int count;
+   int i;
+
+   texImage = (GLubyte *) malloc(bytes);
+   getImage = (GLubyte *) malloc(bytes);
+   if (!texImage || !getImage) {
+      DownloadRate = 0.0;
+      return;
+   }
+
+   for (i = 0; i < bytes; i++) {
+      texImage[i] = i & 0xff;
+   }
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   glPixelStorei(GL_PACK_ALIGNMENT, 1);
+
+   if (ScaleAndBias) {
+      glPixelTransferf(GL_RED_SCALE, 0.5);
+      glPixelTransferf(GL_GREEN_SCALE, 0.5);
+      glPixelTransferf(GL_BLUE_SCALE, 0.5);
+      glPixelTransferf(GL_RED_BIAS, 0.5);
+      glPixelTransferf(GL_GREEN_BIAS, 0.5);
+      glPixelTransferf(GL_BLUE_BIAS, 0.5);
+   }
+   else {
+      glPixelTransferf(GL_RED_SCALE, 1.0);
+      glPixelTransferf(GL_GREEN_SCALE, 1.0);
+      glPixelTransferf(GL_BLUE_SCALE, 1.0);
+      glPixelTransferf(GL_RED_BIAS, 0.0);
+      glPixelTransferf(GL_GREEN_BIAS, 0.0);
+      glPixelTransferf(GL_BLUE_BIAS, 0.0);
+   }
+
+   count = 0;
+   t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
+   do {
+      if (SubImage && count > 0) {
+         glTexSubImage2D(GL_TEXTURE_2D, 0, -TexBorder, -TexBorder, w, h,
+                         FormatTable[Format].Format,
+                         FormatTable[Format].Type, texImage);
+      }
+      else {
+         glTexImage2D(GL_TEXTURE_2D, 0,
+                      FormatTable[Format].IntFormat, w, h, TexBorder,
+                      FormatTable[Format].Format,
+                      FormatTable[Format].Type, texImage);
+      }
+
+      if (count == 0) {
+         /* draw a tiny polygon to force texture into texram */
+         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+         glEnable(GL_TEXTURE_2D);
+         glBegin(GL_TRIANGLES);
+         glTexCoord2f(0, 0);   glVertex2f(1, 1);
+         glTexCoord2f(1, 0);   glVertex2f(3, 1);
+         glTexCoord2f(0.5, 1);   glVertex2f(2, 3);
+         glEnd();
+         glDisable(GL_TEXTURE_2D);
+      }
+
+      t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
+      time = t1 - t0;
+      count++;
+   } while (time < 3.0);
+
+   printf("w*h=%d  count=%d  time=%f\n", w*h, count, time);
+   DownloadRate = w * h * count / time;
+
+#if 0
+   if (!ScaleAndBias) {
+      /* verify texture readback */
+      glGetTexImage(GL_TEXTURE_2D, 0,
+                    FormatTable[Format].Format,
+                    FormatTable[Format].Type, getImage);
+      for (i = 0; i < w * h; i++) {
+         if (texImage[i] != getImage[i]) {
+            printf("[%d] %d != %d\n", i, texImage[i], getImage[i]);
+         }
+      }
+   }
+#endif
+
+   free(texImage);
+   free(getImage);
+
+   {
+      GLint err = glGetError();
+      if (err)
+         printf("GL error %d\n", err);
+   }
+}
+
+
+static void
+PrintString(const char *s)
+{
+   while (*s) {
+      glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
+      s++;
+   }
+}
+
+
+static void
+Display(void)
+{
+   const int w = TexWidth + 2 * TexBorder;
+   const int h = TexHeight + 2 * TexBorder;
+   char s[1000];
+
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   glRasterPos2i(10, 80);
+   sprintf(s, "Texture size[cursor]: %d x %d  Border[b]: %d", w, h, TexBorder);
+   PrintString(s);
+
+   glRasterPos2i(10, 65);
+   sprintf(s, "Format[f]: %s  Type: %s  IntFormat: %s",
+           FormatStr(FormatTable[Format].Format),
+           TypeStr(  FormatTable[Format].Type),
+           FormatStr(FormatTable[Format].IntFormat));
+   PrintString(s);
+
+   glRasterPos2i(10, 50);
+   sprintf(s, "Pixel Scale&Bias[p]: %s   TexSubImage[s]: %s",
+           ScaleAndBias ? "Yes" : "No",
+           SubImage ? "Yes" : "No");
+   PrintString(s);
+
+   if (Mode == 0) {
+      glRasterPos2i(200, 10);
+      sprintf(s, "...Measuring...");
+      PrintString(s);
+      glutSwapBuffers();
+      glutPostRedisplay();
+      Mode++;
+   }
+   else if (Mode == 1) {
+      MeasureDownloadRate();
+      glutPostRedisplay();
+      Mode++;
+   }
+   else {
+      /* show results */
+      glRasterPos2i(10, 10);
+      sprintf(s, "Download rate: %g Mtexels/second  %g MB/second",
+              DownloadRate / 1000000.0,
+              DownloadRate * BytesPerTexel(Format) / 1000000.0);
+      PrintString(s);
+      {
+         GLint r, g, b, a, l, i;
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_RED_SIZE, &r);
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_GREEN_SIZE, &g);
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_BLUE_SIZE, &b);
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_SIZE, &a);
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_LUMINANCE_SIZE, &l);
+         glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTENSITY_SIZE, &i);
+         sprintf(s, "TexelBits: R=%d G=%d B=%d A=%d L=%d I=%d", r, g, b, a, l, i);
+         glRasterPos2i(10, 25);
+         PrintString(s);
+      }
+
+      glutSwapBuffers();
+   }
+}
+
+
+static void
+Reshape(int width, int height)
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(0, width, 0, height, -1, 1);
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+}
+
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case ' ':
+         Mode = 0;
+         break;
+      case 'b':
+         /* toggle border */
+         TexBorder = 1 - TexBorder;
+         Mode = 0;
+         break;
+      case 'f':
+         /* change format */
+         Format = (Format + 1) % NUM_FORMATS;
+         Mode = 0;
+         break;
+      case 'p':
+         /* toggle border */
+         ScaleAndBias = !ScaleAndBias;
+         Mode = 0;
+         break;
+      case 's':
+         SubImage = !SubImage;
+         Mode = 0;
+         break;
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+SpecialKey(int key, int x, int y)
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case GLUT_KEY_UP:
+         if (TexHeight < MaxSize)
+            TexHeight *= 2;
+         break;
+      case GLUT_KEY_DOWN:
+         if (TexHeight > 1)
+            TexHeight /= 2;
+         break;
+      case GLUT_KEY_LEFT:
+         if (TexWidth > 1)
+            TexWidth /= 2;
+         break;
+      case GLUT_KEY_RIGHT:
+         if (TexWidth < MaxSize)
+            TexWidth *= 2;
+         break;
+   }
+   Mode = 0;
+   glutPostRedisplay();
+}
+
+
+static void
+Init(void)
+{
+   printf("GL_VENDOR = %s\n", (const char *) glGetString(GL_VENDOR));
+   printf("GL_VERSION = %s\n", (const char *) glGetString(GL_VERSION));
+   printf("GL_RENDERER = %s\n", (const char *) glGetString(GL_RENDERER));
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 600, 100 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutSpecialFunc( SpecialKey );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}

progs/demos/texenv.c

@@ -0,0 +1,774 @@
+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/**
+ * (c) Copyright 1993, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States.  Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+
+/*
+ * Demonstrates texture environment modes and internal image formats.
+ */
+
+/*
+ * Hacked on, updated by Gareth Hughes <gareth@valinux.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <GL/glut.h>
+
+#undef max
+#undef min
+#define max( a, b )	((a) >= (b) ? (a) : (b))
+#define min( a, b )	((a) <= (b) ? (a) : (b))
+
+GLfloat lightCheck[4] = { 0.7, 0.7, 0.7, 1.0 };
+GLfloat darkCheck[4] = { 0.3, 0.3, 0.3, 1.0 };
+
+GLfloat labelColor0[4] = { 1.0, 1.0, 1.0, 1.0 };
+GLfloat labelColor1[4] = { 1.0, 1.0, 0.4, 1.0 };
+GLfloat *labelInfoColor = labelColor0;
+GLfloat labelLevelColor0[4] = { 0.8, 0.8, 0.1, 1.0 };
+GLfloat labelLevelColor1[4] = { 0.0, 0.0, 0.0, 1.0 };
+
+GLboolean doubleBuffered = GL_FALSE;
+GLboolean drawBackground = GL_FALSE;
+GLboolean drawBlended = GL_TRUE;
+GLboolean drawSmooth = GL_FALSE;
+GLboolean drawTextured = GL_TRUE;
+GLboolean displayLevelInfo = GL_FALSE;
+
+int textureWidth = 64;
+int textureHeight = 64;
+
+int winWidth = 580, winHeight = 720;
+
+struct formatInfo {
+   GLenum	baseFormat;
+   GLenum	internalFormat;
+   char		*name;
+};
+
+#define NUM_LUMINANCE_FORMATS	(sizeof(luminanceFormats) / sizeof(luminanceFormats[0]))
+struct formatInfo luminanceFormats[] =
+{
+   { GL_LUMINANCE, GL_LUMINANCE, "LUMINANCE" },
+   { GL_LUMINANCE, GL_LUMINANCE4, "LUMINANCE4" },
+   { GL_LUMINANCE, GL_LUMINANCE8, "LUMINANCE8" },
+   { GL_LUMINANCE, GL_LUMINANCE12, "LUMINANCE12" },
+   { GL_LUMINANCE, GL_LUMINANCE16, "LUMINANCE16" },
+};
+
+#define NUM_ALPHA_FORMATS	(sizeof(alphaFormats) / sizeof(alphaFormats[0]))
+struct formatInfo alphaFormats[] =
+{
+   { GL_ALPHA, GL_ALPHA, "ALPHA" },
+   { GL_ALPHA, GL_ALPHA4, "ALPHA4" },
+   { GL_ALPHA, GL_ALPHA8, "ALPHA8" },
+   { GL_ALPHA, GL_ALPHA12, "ALPHA12" },
+   { GL_ALPHA, GL_ALPHA16, "ALPHA16" },
+};
+
+#define NUM_INTENSITY_FORMATS	(sizeof(intensityFormats) / sizeof(intensityFormats[0]))
+struct formatInfo intensityFormats[] =
+{
+   { GL_INTENSITY, GL_INTENSITY, "INTENSITY" },
+   { GL_INTENSITY, GL_INTENSITY4, "INTENSITY4" },
+   { GL_INTENSITY, GL_INTENSITY8, "INTENSITY8" },
+   { GL_INTENSITY, GL_INTENSITY12, "INTENSITY12" },
+   { GL_INTENSITY, GL_INTENSITY16, "INTENSITY16" },
+};
+
+#define NUM_LUMINANCE_ALPHA_FORMATS	(sizeof(luminanceAlphaFormats) / sizeof(luminanceAlphaFormats[0]))
+struct formatInfo luminanceAlphaFormats[] =
+{
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, "LUMINANCE_ALPHA" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE4_ALPHA4, "LUMINANCE4_ALPHA4" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, "LUMINANCE6_ALPHA2" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE8_ALPHA8, "LUMINANCE8_ALPHA8" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE12_ALPHA4, "LUMINANCE12_ALPHA4" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE12_ALPHA12, "LUMINANCE12_ALPHA12" },
+   { GL_LUMINANCE_ALPHA, GL_LUMINANCE16_ALPHA16, "LUMINANCE16_ALPHA16" },
+};
+
+#define NUM_RGB_FORMATS		(sizeof(rgbFormats) / sizeof(rgbFormats[0]))
+struct formatInfo rgbFormats[] =
+{
+   { GL_RGB, GL_RGB, "RGB" },
+   { GL_RGB, GL_R3_G3_B2, "R3_G3_B2" },
+   { GL_RGB, GL_RGB4, "RGB4" },
+   { GL_RGB, GL_RGB5, "RGB5" },
+   { GL_RGB, GL_RGB8, "RGB8" },
+   { GL_RGB, GL_RGB10, "RGB10" },
+   { GL_RGB, GL_RGB12, "RGB12" },
+   { GL_RGB, GL_RGB16, "RGB16" },
+};
+
+#define NUM_RGBA_FORMATS	(sizeof(rgbaFormats) / sizeof(rgbaFormats[0]))
+struct formatInfo rgbaFormats[] =
+{
+   { GL_RGBA, 4, "RGBA" },
+   { GL_RGBA, GL_RGBA2, "RGBA2" },
+   { GL_RGBA, GL_RGBA4, "RGBA4" },
+   { GL_RGBA, GL_RGB5_A1, "RGB5_A1" },
+   { GL_RGBA, GL_RGBA8, "RGBA8" },
+   { GL_RGBA, GL_RGB10_A2, "RGB10_A2" },
+   { GL_RGBA, GL_RGBA12, "RGBA12" },
+   { GL_RGBA, GL_RGBA16, "RGBA16" },
+};
+
+struct baseFormatInfo {
+   struct	formatInfo *format;
+   int		current, number;
+};
+
+#define NUM_BASE_FORMATS	(sizeof(baseFormats) / sizeof(baseFormats[0]))
+int baseFormat;
+struct baseFormatInfo baseFormats[] =
+{
+   { luminanceFormats, 0, NUM_LUMINANCE_FORMATS },
+   { alphaFormats, 0, NUM_ALPHA_FORMATS },
+   { intensityFormats, 0, NUM_INTENSITY_FORMATS },
+   { luminanceAlphaFormats, 0, NUM_LUMINANCE_ALPHA_FORMATS },
+   { rgbFormats, 0, NUM_RGB_FORMATS },
+   { rgbaFormats, 0, NUM_RGBA_FORMATS },
+};
+
+#define NUM_ENV_COLORS		(sizeof(envColors) / sizeof(envColors[0]))
+int envColor;
+GLfloat envColors[][4] =
+{
+   { 0.0, 0.0, 0.0, 1.0 },
+   { 1.0, 0.0, 0.0, 1.0 },
+   { 0.0, 1.0, 0.0, 1.0 },
+   { 0.0, 0.0, 1.0, 1.0 },
+   { 1.0, 1.0, 1.0, 1.0 },
+};
+
+struct envModeInfo {
+   GLenum	mode;
+   char		*name;
+};
+
+/* allow for run-time check for GL_EXT_texture_env_add */
+int NUM_ENV_MODES = 5;
+struct envModeInfo envModes[] =
+{
+   { GL_REPLACE, "REPLACE" },
+   { GL_MODULATE, "MODULATE" },
+   { GL_BLEND, "BLEND" },
+   { GL_DECAL, "DECAL" },
+#if GL_EXT_texture_env_add
+   { GL_ADD, "ADD" },
+#endif
+};
+
+static void checkErrors( void )
+{
+   GLenum error;
+
+   return;
+
+   while ( (error = glGetError()) != GL_NO_ERROR ) {
+      fprintf( stderr, "Error: %s\n", (char *) gluErrorString( error ) );
+   }
+}
+
+static void drawString( char *string, GLfloat x, GLfloat y, GLfloat color[4] )
+{
+   glColor4fv( color );
+   glRasterPos2f( x, y );
+
+   while ( *string ) {
+      glutBitmapCharacter( GLUT_BITMAP_TIMES_ROMAN_10, *string );
+      string++;
+   }
+}
+
+static void drawStringOutline( char *string, GLfloat x, GLfloat y,
+			       GLfloat color[4], GLfloat outline[4] )
+{
+   drawString( string, x - 1, y, outline );
+   drawString( string, x + 1, y, outline );
+   drawString( string, x, y - 1, outline );
+   drawString( string, x, y + 1, outline );
+   drawString( string, x, y, color );
+}
+
+static void begin2D( int width, int height )
+{
+   glMatrixMode( GL_PROJECTION );
+
+   glPushMatrix();
+   glLoadIdentity();
+
+   glOrtho( 0, width, 0, height, -1, 1 );
+   glMatrixMode( GL_MODELVIEW );
+
+   glPushMatrix();
+   glLoadIdentity();
+}
+
+static void end2D( void )
+{
+   glMatrixMode( GL_PROJECTION );
+   glPopMatrix();
+   glMatrixMode( GL_MODELVIEW );
+   glPopMatrix();
+}
+
+static void initialize( void )
+{
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+
+   glOrtho( -1.5, 1.5, -1.5, 1.5, -1.5, 1.5 );
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glShadeModel( GL_FLAT );
+}
+
+/* ARGSUSED1 */
+static void keyboard( unsigned char c, int x, int y )
+{
+   switch ( c ) {
+   case 'c':
+      envColor = ++envColor % (int) NUM_ENV_COLORS;
+      break;
+   case 'g':
+      drawBackground = !drawBackground;
+      break;
+   case 'b':
+      drawBlended = !drawBlended;
+      break;
+   case 's':
+      drawSmooth = !drawSmooth;
+      break;
+   case 't':
+      drawTextured = !drawTextured;
+      break;
+   case 'i':
+      displayLevelInfo = !displayLevelInfo;
+      break;
+   case 27:             /* Escape key should force exit. */
+      exit(0);
+      break;
+   default:
+      break;
+   }
+   glutPostRedisplay();
+}
+
+/* ARGSUSED1 */
+static void special( int key, int x, int y )
+{
+   switch ( key ) {
+   case GLUT_KEY_DOWN:
+      if ( ++baseFormat > NUM_BASE_FORMATS - 1 ) {
+	 baseFormat = 0;
+      }
+      break;
+   case GLUT_KEY_UP:
+      if ( --baseFormat < 0 ) {
+	 baseFormat = NUM_BASE_FORMATS - 1;
+      }
+      break;
+   case GLUT_KEY_LEFT:
+      --baseFormats[baseFormat].current;
+      if ( baseFormats[baseFormat].current < 0 ) {
+	 baseFormats[baseFormat].current = baseFormats[baseFormat].number - 1;
+      }
+      break;
+   case GLUT_KEY_RIGHT:
+      ++baseFormats[baseFormat].current;
+      if ( baseFormats[baseFormat].current > baseFormats[baseFormat].number - 1 ) {
+	 baseFormats[baseFormat].current = 0;
+      }
+      break;
+   default:
+      break;
+   }
+   glutPostRedisplay();
+}
+
+static void
+reshape( int w, int h )
+{
+   winWidth = w;
+   winHeight = h;
+   /* No need to call glViewPort here since "draw" calls it! */
+}
+
+static void loadTexture( int width, int height, struct formatInfo *format )
+{
+   int		luminanceSize = 0;
+   int		alphaSize = 0;
+   int		rgbSize = 0;
+   GLenum	textureFormat;
+   GLubyte	*texImage, *p;
+   int		elementsPerGroup, elementSize, groupSize, rowSize;
+   int		i, j;
+
+   switch ( format->baseFormat ) {
+   case GL_LUMINANCE:
+      luminanceSize = 1;
+      textureFormat = GL_LUMINANCE;
+      break;
+   case GL_INTENSITY:
+      luminanceSize = 1;
+      textureFormat = GL_INTENSITY;
+      break;
+   case GL_ALPHA:
+      alphaSize = 1;
+      textureFormat = GL_ALPHA;
+      break;
+   case GL_LUMINANCE_ALPHA:
+      luminanceSize = 1;
+      alphaSize = 1;
+      textureFormat = GL_LUMINANCE_ALPHA;
+      break;
+   case GL_RGB:
+      rgbSize = 3;
+      textureFormat = GL_RGB;
+      break;
+   case GL_RGBA:
+      rgbSize = 3;
+      alphaSize = 1;
+      textureFormat = GL_RGBA;
+      break;
+   default:
+      fprintf(stderr, "bad internal format info\n");
+      return;
+   }
+
+   elementsPerGroup = luminanceSize + alphaSize + rgbSize;
+   elementSize = sizeof(GLubyte);
+   groupSize = elementsPerGroup * elementSize;
+   rowSize = width * groupSize;
+
+   if ( (texImage = (GLubyte *) malloc( height * rowSize ) ) == NULL ) {
+      fprintf( stderr, "texture malloc failed\n" );
+      return;
+   }
+
+   for ( i = 0 ; i < height ; i++ )
+   {
+      p = texImage + i * rowSize;
+
+      for ( j = 0 ; j < width ; j++ )
+      {
+	 if ( luminanceSize > 0 )
+	 {
+	    /**
+	     ** +-----+-----+
+	     ** |     |     |
+	     ** |  W  | LG  |
+	     ** |     |     |
+	     ** +-----+-----+
+	     ** |     |     |
+	     ** | DG  |  B  |
+	     ** |     |     |
+	     ** +-----+-----+
+	     **/
+	    if ( i > height / 2 ) {
+	       if ( j < width / 2 ) {
+		  p[0] = 0xff;
+	       } else {
+		  p[0] = 0xaa;
+	       }
+	    } else {
+	       if ( j < width / 2 ) {
+		  p[0] = 0x55;
+	       } else {
+		  p[0] = 0x00;
+	       }
+	    }
+	    p += elementSize;
+	 }
+
+	 if ( rgbSize > 0 )
+	 {
+	    /**
+	     ** +-----+-----+
+	     ** |     |     |
+	     ** |  R  |  G  |
+	     ** |     |     |
+	     ** +-----+-----+
+	     ** |     |     |
+	     ** |  Y  |  B  |
+	     ** |     |     |
+	     ** +-----+-----+
+	     **/
+	    if ( i > height / 2 ) {
+	       if ( j < width / 2 ) {
+		  p[0] = 0xff;
+		  p[1] = 0x00;
+		  p[2] = 0x00;
+	       } else {
+		  p[0] = 0x00;
+		  p[1] = 0xff;
+		  p[2] = 0x00;
+	       }
+	    } else {
+	       if ( j < width / 2 ) {
+		  p[0] = 0xff;
+		  p[1] = 0xff;
+		  p[2] = 0x00;
+	       } else {
+		  p[0] = 0x00;
+		  p[1] = 0x00;
+		  p[2] = 0xff;
+	       }
+	    }
+	    p += 3 * elementSize;
+	 }
+
+	 if ( alphaSize > 0 )
+	 {
+	    /**
+	     ** +-----------+
+	     ** |     W     |
+	     ** |  +-----+  |
+	     ** |  |     |  |
+	     ** |  |  B  |  |
+	     ** |  |     |  |
+	     ** |  +-----+  |
+	     ** |           |
+	     ** +-----------+
+	     **/
+	    int i2 = i - height / 2;
+	    int j2 = j - width / 2;
+	    int h8 = height / 8;
+	    int w8 = width / 8;
+	    if ( -h8 <= i2 && i2 <= h8 && -w8 <= j2 && j2 <= w8 ) {
+	       p[0] = 0x00;
+	    } else if ( -2 * h8 <= i2 && i2 <= 2 * h8 && -2 * w8 <= j2 && j2 <= 2 * w8 ) {
+	       p[0] = 0x55;
+	    } else if ( -3 * h8 <= i2 && i2 <= 3 * h8 && -3 * w8 <= j2 && j2 <= 3 * w8 ) {
+	       p[0] = 0xaa;
+	    } else {
+	       p[0] = 0xff;
+	    }
+	    p += elementSize;
+	 }
+      }
+   }
+
+   glTexImage2D( GL_TEXTURE_2D, 0,
+		 format->internalFormat, width, height, 0,
+		 textureFormat, GL_UNSIGNED_BYTE, texImage );
+
+   free( texImage );
+}
+
+static void drawCheck( int w, int h, GLfloat lightCheck[4], GLfloat darkCheck[4] )
+{
+   float	dw = 2.0 / w;
+   float	dh = 2.0 / h;
+   int		i, j;
+
+   for ( i = 0 ; i < w ; i++ ) {
+      GLfloat x0 = -1.0 + i * dw;
+      GLfloat x1 = x0 + dw;
+
+      glBegin( GL_QUAD_STRIP );
+
+      for ( j = 0 ; j <= h ; j++ ) {
+	 GLfloat y = -1.0 + j * dh;
+
+	 if ( (i ^ j) & 1 ) {
+	    glColor4fv( lightCheck );
+	 } else {
+	    glColor4fv( darkCheck );
+	 }
+
+	 glVertex2f( x0, y );
+	 glVertex2f( x1, y );
+      }
+
+      glEnd();
+   }
+}
+
+static void drawSample( int x, int y, int w, int h,
+			struct formatInfo *format, struct envModeInfo *envMode )
+{
+   glViewport( x, y, w, h );
+   glScissor( x, y, w, h );
+
+   glClearColor( 0.1, 0.1, 0.1, 1.0 );
+   glClear( GL_COLOR_BUFFER_BIT );
+
+   begin2D( w, h );
+   drawString( format->name, 10, h - 15, labelInfoColor );
+   drawString( envMode->name, 10, 5, labelInfoColor );
+   end2D();
+
+   glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, envMode->mode );
+   glTexEnvfv( GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, envColors[envColor] );
+
+   glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
+   glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+
+   glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
+   glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
+
+   loadTexture( textureWidth, textureHeight, format );
+
+   if ( drawBackground ) {
+      drawCheck( 15, 15, lightCheck, darkCheck );
+   }
+   if ( drawBlended ) {
+      glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+      glEnable( GL_BLEND );
+   }
+   if ( drawSmooth ) {
+      glShadeModel( GL_SMOOTH );
+   }
+   else {
+      glShadeModel( GL_FLAT );
+      glColor4f(1, 1, 1, 1);
+   }
+   if ( drawTextured ) {
+      glEnable( GL_TEXTURE_2D );
+   }
+
+   glBegin( GL_QUADS );
+      if ( drawSmooth )  glColor4f( 1.0, 0.0, 1.0, 1.0 );
+      glTexCoord2f( 0.0, 0.0 );
+      glVertex2f( -0.8, -0.8 );
+
+      if ( drawSmooth )  glColor4f( 1.0, 0.0, 1.0, 1.0 );
+      glTexCoord2f( 1.0, 0.0 );
+      glVertex2f( 0.8, -0.8 );
+
+      if ( drawSmooth )  glColor4f( 0.0, 1.0, 0.0, 1.0 );
+      glTexCoord2f( 1.0, 1.0 );
+      glVertex2f( 0.8, 0.8 );
+
+      if ( drawSmooth )  glColor4f( 0.0, 1.0, 0.0, 1.0 );
+      glTexCoord2f( 0.0, 1.0 );
+      glVertex2f( -0.8, 0.8 );
+   glEnd();
+
+   glDisable( GL_BLEND );
+   glShadeModel( GL_FLAT );
+   glDisable( GL_TEXTURE_2D );
+
+   if ( envMode->mode == GL_DECAL &&
+        (format->baseFormat == GL_ALPHA ||
+         format->baseFormat == GL_LUMINANCE ||
+         format->baseFormat == GL_LUMINANCE_ALPHA ||
+         format->baseFormat == GL_INTENSITY)) {
+      /* undefined format/mode combination */
+      begin2D( w, h );
+      drawStringOutline( "UNDEFINED MODE", 15, h / 2,
+                         labelLevelColor0, labelLevelColor1 );
+      end2D();
+   }
+   else if ( displayLevelInfo ) {
+      GLint width, height, border, components;
+      GLint redSize, greenSize, blueSize, alphaSize;
+      GLint luminanceSize, intensitySize;
+      char buf[255];
+
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_BORDER, &border );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_COMPONENTS, &components );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_RED_SIZE, &redSize );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_GREEN_SIZE, &greenSize );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_BLUE_SIZE, &blueSize );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_SIZE, &alphaSize );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_LUMINANCE_SIZE, &luminanceSize );
+      glGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_INTENSITY_SIZE, &intensitySize );
+
+      begin2D( w, h );
+      sprintf( buf, "dimensions: %d x %d", width, height );
+      drawStringOutline( buf, 15, h / 2 + 20, labelLevelColor0, labelLevelColor1 );
+
+      sprintf( buf, "border: %d", border );
+      drawStringOutline( buf, 15, h / 2 + 10, labelLevelColor0, labelLevelColor1 );
+
+      sprintf( buf, "components: 0x%04X", components );
+      drawStringOutline( buf, 15, h / 2, labelLevelColor0, labelLevelColor1 );
+
+      sprintf( buf, "sizes:" );
+      drawStringOutline( buf, 15, h / 2 - 10, labelLevelColor0, labelLevelColor1 );
+
+      sprintf( buf, "  %d / %d / %d / %d / %d / %d",
+	       redSize, greenSize, blueSize, alphaSize,
+	       luminanceSize, intensitySize );
+      drawStringOutline( buf, 15, h / 2 - 20, labelLevelColor0, labelLevelColor1 );
+
+      end2D();
+   }
+}
+
+static void display( void )
+{
+   int		numX = NUM_ENV_MODES, numY = NUM_BASE_FORMATS;
+   float	xBase = (float) winWidth * 0.01;
+   float	xOffset = (winWidth - xBase) / numX;
+   float	xSize = max( xOffset - xBase, 1 );
+   float	yBase = (float) winHeight * 0.01;
+   float	yOffset = (winHeight - yBase) / numY;
+   float	ySize = max( yOffset - yBase, 1 );
+   float	x, y;
+   int		i, j;
+
+   glViewport( 0, 0, winWidth, winHeight );
+   glDisable( GL_SCISSOR_TEST );
+   glClearColor( 0.0, 0.0, 0.0, 0.0 );
+   glClear( GL_COLOR_BUFFER_BIT );
+   glEnable( GL_SCISSOR_TEST );
+
+   x = xBase;
+   y = (winHeight - 1) - yOffset;
+
+   for ( i = 0 ; i < NUM_BASE_FORMATS ; i++ )
+   {
+      struct formatInfo *format;
+
+      if ( i == baseFormat ) {
+	 labelInfoColor = labelColor1;
+      } else {
+	 labelInfoColor = labelColor0;
+      }
+
+      format = &baseFormats[i].format[baseFormats[i].current];
+
+      for ( j = 0 ; j < NUM_ENV_MODES ; j++ ) {
+	 struct envModeInfo *envMode;
+
+	 envMode = &envModes[j];
+	 drawSample( x, y, xSize, ySize, format, envMode );
+	 x += xOffset;
+      }
+
+      x = xBase;
+      y -= yOffset;
+   }
+
+   if ( doubleBuffered ) {
+      glutSwapBuffers();
+   } else {
+      glFlush();
+   }
+
+   checkErrors();
+}
+
+static void usage( char *name )
+{
+   fprintf( stderr, "usage: %s [ options ]\n", name );
+   fprintf( stderr, "\n" );
+   fprintf( stderr, "options:\n" );
+   fprintf( stderr, "    -sb    single buffered\n" );
+   fprintf( stderr, "    -db    double buffered\n" );
+   fprintf( stderr, "    -info  print OpenGL driver info\n" );
+}
+
+static void instructions( void )
+{
+   fprintf( stderr, "texenv - texture environment and internal format test\n" );
+   fprintf( stderr, "\n" );
+   fprintf( stderr, "  [c] - cycle through background colors\n" );
+   fprintf( stderr, "  [g] - toggle background\n" );
+   fprintf( stderr, "  [b] - toggle blend\n" );
+   fprintf( stderr, "  [s] - toggle smooth shading\n" );
+   fprintf( stderr, "  [t] - toggle texturing\n" );
+   fprintf( stderr, "  [i] - toggle information display\n" );
+}
+
+int main( int argc, char *argv[] )
+{
+   GLboolean info = GL_FALSE;
+   int i;
+
+   glutInit( &argc, argv );
+
+   for ( i = 1 ; i < argc ; i++ ) {
+      if ( !strcmp( "-sb", argv[i] ) ) {
+	 doubleBuffered = GL_FALSE;
+      } else if ( !strcmp( "-db", argv[i] ) ) {
+	 doubleBuffered = GL_TRUE;
+      } else if ( !strcmp( "-info", argv[i] ) ) {
+	 info = GL_TRUE;
+      } else {
+	 usage( argv[0] );
+	 exit( 1 );
+      }
+   }
+
+   if ( doubleBuffered ) {
+      glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+   } else {
+      glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE );
+   }
+
+   glutInitWindowSize( winWidth, winHeight );
+   glutCreateWindow( "Texture Environment Test" );
+
+   initialize();
+   instructions();
+
+   if ( info ) {
+      printf( "\n" );
+      printf( "GL_RENDERER   = %s\n", (char *) glGetString( GL_RENDERER ) );
+      printf( "GL_VERSION    = %s\n", (char *) glGetString( GL_VERSION ) );
+      printf( "GL_VENDOR     = %s\n", (char *) glGetString( GL_VENDOR ) ) ;
+      printf( "GL_EXTENSIONS = %s\n", (char *) glGetString( GL_EXTENSIONS ) );
+   }
+
+#if GL_EXT_texture_env_add
+   if ( !glutExtensionSupported( "GL_EXT_texture_env_add" ) ) {
+      fprintf( stderr, "missing extension: GL_EXT_texture_env_add\n" );
+      NUM_ENV_MODES--;
+   }
+#endif
+
+   glutDisplayFunc( display );
+   glutReshapeFunc( reshape );
+   glutKeyboardFunc( keyboard );
+   glutSpecialFunc( special );
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/texobj.c

@@ -1,4 +1,4 @@
-/* $Id: texobj.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: texobj.c,v 1.5 2000/07/19 23:57:24 brianp Exp $ */
 
 /*
  * Example of using the 1.1 texture object functions.
@@ -7,21 +7,6 @@
  * Brian Paul   June 1996   This file is in the public domain.
  */
 
-
-/*
- * $Log: texobj.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
- *
- * Revision 3.1  1999/03/28 18:24:37  brianp
- * minor clean-up
- *
- * Revision 3.0  1998/02/14 18:42:29  brianp
- * initial rev
- *
- */
-
-
 #include <math.h>
 #include <stdlib.h>
 #include <string.h>
@@ -31,10 +16,10 @@ static GLuint Window = 0;
 
 static GLuint TexObj[2];
 static GLfloat Angle = 0.0f;
-static GLboolean HaveTexObj = GL_FALSE;
+static GLboolean UseObj = GL_FALSE;
 
 
-#if defined(GL_VERSION_1_1)
+#if defined(GL_VERSION_1_1) || defined(GL_VERSION_1_2)
 #  define TEXTURE_OBJECT 1
 #elif defined(GL_EXT_texture_object)
 #  define TEXTURE_OBJECT 1
@@ -58,7 +43,7 @@ static void draw( void )
    glPushMatrix();
    glTranslatef( -1.0, 0.0, 0.0 );
    glRotatef( Angle, 0.0, 0.0, 1.0 );
-   if (HaveTexObj) {
+   if (UseObj) {
 #ifdef TEXTURE_OBJECT
       glBindTexture( GL_TEXTURE_2D, TexObj[0] );
 #endif
@@ -78,13 +63,13 @@ static void draw( void )
    glPushMatrix();
    glTranslatef( 1.0, 0.0, 0.0 );
    glRotatef( Angle-90.0, 0.0, 1.0, 0.0 );
-   if (HaveTexObj) {
+   if (UseObj) {
 #ifdef TEXTURE_OBJECT
       glBindTexture( GL_TEXTURE_2D, TexObj[1] );
 #endif
    }
    else {
-      glCallList( TexObj[0] );
+      glCallList( TexObj[1] );
    }
    glBegin( GL_POLYGON );
    glTexCoord2f( 0.0, 0.0 );   glVertex2f( -1.0, -1.0 );
@@ -174,7 +159,7 @@ static void init( void )
 
 
    /* generate texture object IDs */
-   if (HaveTexObj) {
+   if (UseObj) {
 #ifdef TEXTURE_OBJECT
       glGenTextures( 2, TexObj );
 #endif
@@ -185,7 +170,7 @@ static void init( void )
    }
 
    /* setup first texture object */
-   if (HaveTexObj) {
+   if (UseObj) {
 #ifdef TEXTURE_OBJECT
       glBindTexture( GL_TEXTURE_2D, TexObj[0] );
 #endif
@@ -212,13 +197,13 @@ static void init( void )
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
-   if (!HaveTexObj) {
+   if (!UseObj) {
       glEndList();
    }
    /* end of texture object */
 
    /* setup second texture object */
-   if (HaveTexObj) {
+   if (UseObj) {
 #ifdef TEXTURE_OBJECT
       glBindTexture( GL_TEXTURE_2D, TexObj[1] );
 #endif
@@ -244,7 +229,7 @@ static void init( void )
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
-   if (!HaveTexObj) {
+   if (!UseObj) {
       glEndList();
    }
    /* end texture object */
@@ -255,6 +240,7 @@ static void init( void )
 
 int main( int argc, char *argv[] )
 {
+   glutInit(&argc, argv);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(300, 300);
    glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
@@ -272,8 +258,9 @@ int main( int argc, char *argv[] )
       char *exten = (char *) glGetString( GL_EXTENSIONS );
       char *version = (char *) glGetString( GL_VERSION );
       if (   strstr( exten, "GL_EXT_texture_object" )
-          || strncmp( version, "1.1", 3 )==0 ) {
-         HaveTexObj = GL_TRUE;
+          || strncmp( version, "1.1", 3 )==0
+          || strncmp( version, "1.2", 3 )==0 ) {
+         UseObj = GL_TRUE;
       }
    }
 #endif

progs/demos/trispd.c

@@ -1,4 +1,4 @@
-/* $Id: trispd.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: trispd.c,v 1.1.1.1.6.1 2000/10/26 15:26:27 brianp Exp $ */
 
 /*
  * Simple GLUT program to measure triangle strip rendering speed.
@@ -7,8 +7,11 @@
 
 /*
  * $Log: trispd.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.1.1.1.6.1  2000/10/26 15:26:27  brianp
+ * added a glFinish() call
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.4  1999/03/28 18:24:37  brianp
  * minor clean-up
@@ -107,6 +110,7 @@ static void Display( void )
 	 }
       }
    }
+   glFinish();
    t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
    
    if (t1-t0 < MinPeriod) {

progs/demos/tunnel.c

@@ -0,0 +1,510 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include "../util/readtex.c"
+#include "tunneldat.c"
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+static int WIDTH = 640;
+static int HEIGHT = 480;
+
+static GLint T0 = 0;
+static GLint Frames = 0;
+
+#define NUMBLOC 5
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+extern int striplength_skin_13[];
+extern float stripdata_skin_13[];
+
+extern int striplength_skin_12[];
+extern float stripdata_skin_12[];
+
+extern int striplength_skin_11[];
+extern float stripdata_skin_11[];
+
+extern int striplength_skin_9[];
+extern float stripdata_skin_9[];
+
+
+static int win = 0;
+
+static float obs[3] = { 1000.0, 0.0, 2.0 };
+static float dir[3];
+static float v = 0.5;
+static float alpha = 90.0;
+static float beta = 90.0;
+
+static int fog = 1;
+static int bfcull = 1;
+static int usetex = 1;
+static int cstrip = 0;
+static int help = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+
+static GLuint t1id, t2id;
+
+static void
+inittextures(void)
+{
+   glGenTextures(1, &t1id);
+   glBindTexture(GL_TEXTURE_2D, t1id);
+
+   if (!LoadRGBMipmaps("../images/tile.rgb", GL_RGB)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glGenTextures(1, &t2id);
+   glBindTexture(GL_TEXTURE_2D, t2id);
+
+   if (!LoadRGBMipmaps("../images/bw.rgb", GL_RGB)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_LINEAR);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+}
+
+static void
+drawobjs(int *l, float *f)
+{
+   int mend, j;
+
+   if (cstrip) {
+      float r = 0.33, g = 0.33, b = 0.33;
+
+      for (; (*l) != 0;) {
+	 mend = *l++;
+
+	 r += 0.33;
+	 if (r > 1.0) {
+	    r = 0.33;
+	    g += 0.33;
+	    if (g > 1.0) {
+	       g = 0.33;
+	       b += 0.33;
+	       if (b > 1.0)
+		  b = 0.33;
+	    }
+	 }
+
+	 glColor3f(r, g, b);
+	 glBegin(GL_TRIANGLE_STRIP);
+	 for (j = 0; j < mend; j++) {
+	    f += 4;
+	    glTexCoord2fv(f);
+	    f += 2;
+	    glVertex3fv(f);
+	    f += 3;
+	 }
+	 glEnd();
+      }
+   }
+   else
+      for (; (*l) != 0;) {
+	 mend = *l++;
+
+	 glBegin(GL_TRIANGLE_STRIP);
+	 for (j = 0; j < mend; j++) {
+	    glColor4fv(f);
+	    f += 4;
+	    glTexCoord2fv(f);
+	    f += 2;
+	    glVertex3fv(f);
+	    f += 3;
+	 }
+	 glEnd();
+      }
+}
+
+static void
+calcposobs(void)
+{
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[2] = cos(beta * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+}
+
+static void
+special(int k, int x, int y)
+{
+   switch (k) {
+   case GLUT_KEY_LEFT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+   switch (k) {
+   case 27:
+      exit(0);
+      break;
+
+   case 'a':
+      v += 0.01;
+      break;
+   case 'z':
+      v -= 0.01;
+      break;
+
+#ifdef XMESA
+   case ' ':
+      fullscreen = (!fullscreen);
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      break;
+#endif
+   case 'j':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+   case 't':
+      usetex = (!usetex);
+      break;
+   case 'b':
+      if (bfcull) {
+	 glDisable(GL_CULL_FACE);
+	 bfcull = 0;
+      }
+      else {
+	 glEnable(GL_CULL_FACE);
+	 bfcull = 1;
+      }
+      break;
+   case 'm':
+      cstrip = (!cstrip);
+      break;
+
+   case 'd':
+      fprintf(stderr, "Deleting textures...\n");
+      glDeleteTextures(1, &t1id);
+      glDeleteTextures(1, &t2id);
+      fprintf(stderr, "Loading textures...\n");
+      inittextures();
+      fprintf(stderr, "Done.\n");
+      break;
+   }
+   glutPostRedisplay();
+}
+
+static void
+reshape(int w, int h)
+{
+   WIDTH = w;
+   HEIGHT = h;
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(80.0, w / (float) h, 1.0, 50.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glViewport(0, 0, w, h);
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+   glColor4f(0.0, 0.0, 0.0, 0.5);
+   glRecti(40, 40, 600, 440);
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Togle Help");
+   glRasterPos2i(60, 360);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Togle Textures");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Togle Fog");
+   glRasterPos2i(60, 300);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "m - Togle strips");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "b - Togle Back face culling");
+   glRasterPos2i(60, 240);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+   glRasterPos2i(60, 180);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+
+   glRasterPos2i(60, 150);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "j - Togle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "(No Joystick control available)");
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha -=
+	       2.0 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.0 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.01;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.01;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+draw(void)
+{
+   static char frbuf[80] = "";
+   int i;
+   float base, offset;
+
+   dojoy();
+
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   if (usetex)
+      glEnable(GL_TEXTURE_2D);
+   else
+      glDisable(GL_TEXTURE_2D);
+
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glShadeModel(GL_SMOOTH);
+
+   glPushMatrix();
+   calcposobs();
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 0.0, 1.0);
+
+   if (dir[0] > 0) {
+      offset = 8.0;
+      base = obs[0] - fmod(obs[0], 8.0);
+   }
+   else {
+      offset = -8.0;
+      base = obs[0] + (8.0 - fmod(obs[0], 8.0));
+   }
+
+   glPushMatrix();
+   glTranslatef(base - offset / 2.0, 0.0, 0.0);
+   for (i = 0; i < NUMBLOC; i++) {
+      glTranslatef(offset, 0.0, 0.0);
+      glBindTexture(GL_TEXTURE_2D, t1id);
+      drawobjs(striplength_skin_11, stripdata_skin_11);
+      glBindTexture(GL_TEXTURE_2D, t2id);
+      drawobjs(striplength_skin_12, stripdata_skin_12);
+      drawobjs(striplength_skin_9, stripdata_skin_9);
+      drawobjs(striplength_skin_13, stripdata_skin_13);
+   }
+   glPopMatrix();
+   glPopMatrix();
+
+   glDisable(GL_TEXTURE_2D);
+   glDisable(GL_FOG);
+   glShadeModel(GL_FLAT);
+
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(350, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Tunnel V1.5 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+   if (help)
+      printhelp();
+
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+   glMatrixMode(GL_MODELVIEW);
+
+   glutSwapBuffers();
+
+   Frames++;
+   {
+      GLint t = glutGet(GLUT_ELAPSED_TIME);
+      if (t - T0 >= 2000) {
+         GLfloat seconds = (t - T0) / 1000.0;
+         GLfloat fps = Frames / seconds;
+         sprintf(frbuf, "Frame rate: %f", fps);
+         T0 = t;
+         Frames = 0;
+      }
+   }
+}
+
+static void
+idle(void)
+{
+   glutPostRedisplay();
+}
+
+
+
+int
+main(int ac, char **av)
+{
+   float fogcolor[4] = { 0.7, 0.7, 0.7, 1.0 };
+
+   fprintf(stderr,
+	   "Tunnel V1.5\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTH, HEIGHT);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+
+   if (!(win = glutCreateWindow("Tunnel"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      return -1;
+   }
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective(80.0, WIDTH / (float) HEIGHT, 1.0, 50.0);
+
+   glMatrixMode(GL_MODELVIEW);
+
+   glShadeModel(GL_SMOOTH);
+   glDisable(GL_DEPTH_TEST);
+   glEnable(GL_CULL_FACE);
+   glEnable(GL_TEXTURE_2D);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP2);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+
+   glFogf(GL_FOG_DENSITY, 0.06);
+   glHint(GL_FOG_HINT, GL_NICEST);
+
+   inittextures();
+
+   glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   calcposobs();
+
+   glutReshapeFunc(reshape);
+   glutDisplayFunc(draw);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+   glutIdleFunc(idle);
+
+   glEnable(GL_BLEND);
+   /*glBlendFunc(GL_SRC_ALPHA_SATURATE,GL_ONE); */
+   /*glEnable(GL_POLYGON_SMOOTH); */
+
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/tunnel2.c

@@ -0,0 +1,616 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * You need TWO Voodoo Graphics boards in order to run
+ * this demo !
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ *            Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include "../util/readtex.c"
+#include "tunneldat.c"
+
+#ifdef FX
+#endif
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+#ifdef FX
+GLboolean fxMesaSelectCurrentBoard(int);
+#endif
+
+static int WIDTHC0 = 640;
+static int HEIGHTC0 = 480;
+
+static int WIDTHC1 = 640;
+static int HEIGHTC1 = 480;
+
+#define FRAME 50
+
+#define NUMBLOC 5
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+extern int striplength_skin_13[];
+extern float stripdata_skin_13[];
+
+extern int striplength_skin_12[];
+extern float stripdata_skin_12[];
+
+extern int striplength_skin_11[];
+extern float stripdata_skin_11[];
+
+extern int striplength_skin_9[];
+extern float stripdata_skin_9[];
+
+
+static float obs[3] = { 1000.0, 0.0, 2.0 };
+static float dir[3];
+static float v = 0.5;
+static float alpha = 90.0;
+static float beta = 90.0;
+
+static int fog = 0;
+static int bfcull = 1;
+static int usetex = 1;
+static int cstrip = 0;
+static int help = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+
+static int channel[2];
+
+static GLuint t1id, t2id;
+
+static void
+inittextures(void)
+{
+   glGenTextures(1, &t1id);
+   glBindTexture(GL_TEXTURE_2D, t1id);
+
+   if (!LoadRGBMipmaps("../images/tile.rgb", GL_RGB)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_NEAREST);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glGenTextures(1, &t2id);
+   glBindTexture(GL_TEXTURE_2D, t2id);
+
+   if (!LoadRGBMipmaps("../images/bw.rgb", GL_RGB)) {
+      fprintf(stderr, "Error reading a texture.\n");
+      exit(-1);
+   }
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+		   GL_LINEAR_MIPMAP_NEAREST);
+   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+}
+
+static void
+drawobjs(int *l, float *f)
+{
+   int mend, j;
+
+   if (cstrip) {
+      float r = 0.33, g = 0.33, b = 0.33;
+
+      for (; (*l) != 0;) {
+	 mend = *l++;
+
+	 r += 0.33;
+	 if (r > 1.0) {
+	    r = 0.33;
+	    g += 0.33;
+	    if (g > 1.0) {
+	       g = 0.33;
+	       b += 0.33;
+	       if (b > 1.0)
+		  b = 0.33;
+	    }
+	 }
+
+	 glColor3f(r, g, b);
+	 glBegin(GL_TRIANGLE_STRIP);
+	 for (j = 0; j < mend; j++) {
+	    f += 4;
+	    glTexCoord2fv(f);
+	    f += 2;
+	    glVertex3fv(f);
+	    f += 3;
+	 }
+	 glEnd();
+      }
+   }
+   else
+      for (; (*l) != 0;) {
+	 mend = *l++;
+
+	 glBegin(GL_TRIANGLE_STRIP);
+	 for (j = 0; j < mend; j++) {
+	    glColor4fv(f);
+	    f += 4;
+	    glTexCoord2fv(f);
+	    f += 2;
+	    glVertex3fv(f);
+	    f += 3;
+	 }
+	 glEnd();
+      }
+}
+
+static float
+gettime(void)
+{
+   static clock_t told = 0;
+   clock_t tnew, ris;
+
+   tnew = clock();
+
+   ris = tnew - told;
+
+   told = tnew;
+
+   return (ris / (float) CLOCKS_PER_SEC);
+}
+
+static void
+calcposobs(void)
+{
+   dir[0] = sin(alpha * M_PI / 180.0);
+   dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+   dir[2] = cos(beta * M_PI / 180.0);
+
+   obs[0] += v * dir[0];
+   obs[1] += v * dir[1];
+   obs[2] += v * dir[2];
+}
+
+static void
+special(int k, int x, int y)
+{
+   switch (k) {
+   case GLUT_KEY_LEFT:
+      alpha -= 2.0;
+      break;
+   case GLUT_KEY_RIGHT:
+      alpha += 2.0;
+      break;
+   case GLUT_KEY_DOWN:
+      beta -= 2.0;
+      break;
+   case GLUT_KEY_UP:
+      beta += 2.0;
+      break;
+   }
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+   switch (k) {
+   case 27:
+      exit(0);
+      break;
+
+   case 'a':
+      v += 0.01;
+      break;
+   case 'z':
+      v -= 0.01;
+      break;
+
+#ifdef XMESA
+   case ' ':
+      fullscreen = (!fullscreen);
+
+      glutSetWindow(channel[0]);
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+
+      glutSetWindow(channel[1]);
+      XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+      break;
+#endif
+
+   case 'j':
+      joyactive = (!joyactive);
+      break;
+   case 'h':
+      help = (!help);
+      break;
+   case 'f':
+      fog = (!fog);
+      break;
+   case 't':
+      usetex = (!usetex);
+      break;
+   case 'b':
+      if (bfcull) {
+	 glDisable(GL_CULL_FACE);
+	 bfcull = 0;
+      }
+      else {
+	 glEnable(GL_CULL_FACE);
+	 bfcull = 1;
+      }
+      break;
+   case 'm':
+      cstrip = (!cstrip);
+      break;
+
+   case 'd':
+      fprintf(stderr, "Deleting textures...\n");
+      glDeleteTextures(1, &t1id);
+      glDeleteTextures(1, &t2id);
+      fprintf(stderr, "Loading textures...\n");
+      inittextures();
+      fprintf(stderr, "Done.\n");
+      break;
+   }
+}
+
+static void
+reshapechannel0(int w, int h)
+{
+   float ratio;
+
+   WIDTHC0 = w;
+   HEIGHTC0 = h;
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+   ratio = 0.5f * w / (float) h;
+
+   glFrustum(-2.0, 0.0, -1.0 * ratio, 1.0 * ratio, 1.0, 60.0);
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glViewport(0, 0, w, h);
+}
+
+static void
+reshapechannel1(int w, int h)
+{
+   float ratio;
+
+   WIDTHC1 = w;
+   HEIGHTC1 = h;
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+   ratio = 0.5f * w / (float) h;
+
+   glFrustum(0.0, 2.0, -1.0 * ratio, 1.0 * ratio, 1.0, 60.0);
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glViewport(0, 0, w, h);
+}
+
+static void
+printstring(void *font, char *string)
+{
+   int len, i;
+
+   len = (int) strlen(string);
+   for (i = 0; i < len; i++)
+      glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+   glColor4f(0.0, 0.0, 0.0, 0.5);
+   glRecti(40, 40, 600, 440);
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(300, 420);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+   glRasterPos2i(60, 390);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Togle Help");
+   glRasterPos2i(60, 360);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Togle Textures");
+   glRasterPos2i(60, 330);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Togle Fog");
+   glRasterPos2i(60, 300);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "m - Togle strips");
+   glRasterPos2i(60, 270);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "b - Togle Back face culling");
+   glRasterPos2i(60, 240);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+   glRasterPos2i(60, 210);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+   glRasterPos2i(60, 180);
+   printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+
+   glRasterPos2i(60, 150);
+   if (joyavailable)
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "j - Togle jostick control (Joystick control available)");
+   else
+      printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+		  "(No Joystick control available)");
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+   static UINT max[2] = { 0, 0 };
+   static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+   MMRESULT res;
+   JOYINFO joy;
+
+   res = joyGetPos(JOYSTICKID1, &joy);
+
+   if (res == JOYERR_NOERROR) {
+      joyavailable = 1;
+
+      if (max[0] < joy.wXpos)
+	 max[0] = joy.wXpos;
+      if (min[0] > joy.wXpos)
+	 min[0] = joy.wXpos;
+      center[0] = (max[0] + min[0]) / 2;
+
+      if (max[1] < joy.wYpos)
+	 max[1] = joy.wYpos;
+      if (min[1] > joy.wYpos)
+	 min[1] = joy.wYpos;
+      center[1] = (max[1] + min[1]) / 2;
+
+      if (joyactive) {
+	 if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+	    alpha -=
+	       2.0 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+	 if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+	    beta += 2.0 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+	 if (joy.wButtons & JOY_BUTTON1)
+	    v += 0.01;
+	 if (joy.wButtons & JOY_BUTTON2)
+	    v -= 0.01;
+      }
+   }
+   else
+      joyavailable = 0;
+#endif
+}
+
+static void
+draw(void)
+{
+   static int count = 0;
+   static char frbuf[80];
+   int i;
+   float fr, base, offset;
+
+   dojoy();
+
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   if (usetex)
+      glEnable(GL_TEXTURE_2D);
+   else
+      glDisable(GL_TEXTURE_2D);
+
+   if (fog)
+      glEnable(GL_FOG);
+   else
+      glDisable(GL_FOG);
+
+   glShadeModel(GL_SMOOTH);
+
+   glPushMatrix();
+   calcposobs();
+   gluLookAt(obs[0], obs[1], obs[2],
+	     obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+	     0.0, 0.0, 1.0);
+
+   if (dir[0] > 0) {
+      offset = 8.0;
+      base = obs[0] - fmod(obs[0], 8.0);
+   }
+   else {
+      offset = -8.0;
+      base = obs[0] + (8.0 - fmod(obs[0], 8.0));
+   }
+
+   glPushMatrix();
+   glTranslatef(base - offset / 2.0, 0.0, 0.0);
+   for (i = 0; i < NUMBLOC; i++) {
+      glTranslatef(offset, 0.0, 0.0);
+      glBindTexture(GL_TEXTURE_2D, t1id);
+      drawobjs(striplength_skin_11, stripdata_skin_11);
+      glBindTexture(GL_TEXTURE_2D, t2id);
+      drawobjs(striplength_skin_12, stripdata_skin_12);
+      drawobjs(striplength_skin_9, stripdata_skin_9);
+      drawobjs(striplength_skin_13, stripdata_skin_13);
+   }
+   glPopMatrix();
+   glPopMatrix();
+
+   if ((count % FRAME) == 0) {
+      fr = gettime();
+      sprintf(frbuf, "Frame rate: %f", FRAME / fr);
+   }
+
+   glDisable(GL_TEXTURE_2D);
+   glDisable(GL_FOG);
+   glShadeModel(GL_FLAT);
+
+   glMatrixMode(GL_PROJECTION);
+   glPushMatrix();
+   glLoadIdentity();
+   glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+
+   glColor3f(1.0, 0.0, 0.0);
+   glRasterPos2i(10, 10);
+   printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+   glRasterPos2i(350, 470);
+   printstring(GLUT_BITMAP_HELVETICA_10,
+	       "Tunnel2 V1.0 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+   if (help)
+      printhelp();
+
+   glMatrixMode(GL_PROJECTION);
+   glPopMatrix();
+   glMatrixMode(GL_MODELVIEW);
+
+   count++;
+}
+
+static void
+drawchannel0(void)
+{
+   glutSetWindow(channel[0]);
+   draw();
+   glutSwapBuffers();
+}
+
+static void
+drawchannel1(void)
+{
+   glutSetWindow(channel[1]);
+   draw();
+   glutSwapBuffers();
+}
+
+static void
+drawall(void)
+{
+   glutSetWindow(channel[0]);
+   draw();
+   glutSetWindow(channel[1]);
+   draw();
+
+   glutSetWindow(channel[0]);
+   glutSwapBuffers();
+   glutSetWindow(channel[1]);
+   glutSwapBuffers();
+}
+
+static void
+init(void)
+{
+   float fogcolor[4] = { 0.7, 0.7, 0.7, 1.0 };
+
+   glShadeModel(GL_SMOOTH);
+   glDisable(GL_DEPTH_TEST);
+   glEnable(GL_CULL_FACE);
+   glEnable(GL_TEXTURE_2D);
+
+   glEnable(GL_FOG);
+   glFogi(GL_FOG_MODE, GL_EXP2);
+   glFogfv(GL_FOG_COLOR, fogcolor);
+
+   glFogf(GL_FOG_DENSITY, 0.06);
+   glHint(GL_FOG_HINT, GL_NICEST);
+
+   glEnable(GL_BLEND);
+   /*
+   glBlendFunc(GL_SRC_ALPHA_SATURATE, GL_ONE);
+   glEnable(GL_POLYGON_SMOOTH);
+   */
+
+   glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+   glClear(GL_COLOR_BUFFER_BIT);
+}
+
+int
+main(int ac, char **av)
+{
+   fprintf(stderr,
+	   "Tunnel2 V1.0\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+   fprintf(stderr,
+	   "You need TWO Voodoo Graphics boards in order to run this demo !\n");
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(WIDTHC0, HEIGHTC0);
+   glutInit(&ac, av);
+
+   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_ALPHA);
+
+#ifdef FX
+   if (!fxMesaSelectCurrentBoard(0)) {
+      fprintf(stderr, "The first Voodoo Graphics board is missing !?!?\n");
+      return -1;
+   }
+#endif
+   if (!(channel[0] = glutCreateWindow("Channel 0"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      return -1;
+   }
+
+   reshapechannel0(WIDTHC0, HEIGHTC0);
+   init();
+   inittextures();
+   glutDisplayFunc(drawchannel0);
+   glutReshapeFunc(reshapechannel0);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+
+#ifdef FX
+   if (!fxMesaSelectCurrentBoard(1)) {
+      fprintf(stderr, "The second Voodoo Graphics board is missing !\n");
+      exit(-1);
+   }
+#endif
+   glutInitWindowPosition(WIDTHC0, 0);
+   glutInitWindowSize(WIDTHC1, HEIGHTC1);
+   if (!(channel[1] = glutCreateWindow("Channel 1"))) {
+      fprintf(stderr, "Error, couldn't open window\n");
+      exit(-1);
+   }
+
+   reshapechannel1(WIDTHC1, HEIGHTC1);
+   init();
+   inittextures();
+   glutDisplayFunc(drawchannel1);
+   glutReshapeFunc(reshapechannel1);
+   glutKeyboardFunc(key);
+   glutSpecialFunc(special);
+
+   glutIdleFunc(drawall);
+
+   calcposobs();
+
+   glutMainLoop();
+
+   return 0;
+}

progs/demos/tunneldat.c

@@ -0,0 +1,83 @@
+/* Object: skin_13 */
+
+#if defined(_MSC_VER) && defined(_WIN32)
+#pragma warning( disable : 4305 ) /* 'initializing' : truncation from 'const double' to 'float' */
+#endif
+
+int striplength_skin_13[]={
+10,7,3,5,5,4,4,4,4,5,3,4,5,4,4,4,4,4,4,6,
+6,3,6,3,3,3,3,0};
+
+float stripdata_skin_13[]={
+0.415686,0.415686,0.415686,1.000000,0.000000,1.500000,2.000000,4.000000,0.000000,0.341176,0.341176,0.341176,1.000000,-0.500000,1.500000,4.000000,4.000000,0.000000,0.545098,0.545098,0.545098,1.000000,0.000000,1.000000,2.000000,4.000000,2.000000,0.435294,0.435294,0.435294,1.000000,-0.500000,1.000000,4.000000,4.000000,2.000000,0.517647,0.517647,0.517647,1.000000,0.000000,0.500000,2.000000,4.000000,4.000000,0.450980,0.450980,0.450980,1.000000,-0.500000,0.500000,4.000000,4.000000,4.000000,0.427451,0.427451,0.427451,1.000000,0.000000,0.000000,2.000000,4.000000,6.000000,0.388235,0.388235,0.388235,1.000000,-0.500000,0.000000,4.000000,4.000000,6.000000,0.356863,0.356863,0.356863,1.000000,0.000000,-0.500000,2.000000,4.000000,8.000000,0.333333,0.333333,0.333333,1.000000,-0.500000,-0.500000,4.000000,4.000000,8.000000,
+0.435294,0.435294,0.435294,1.000000,1.500000,1.000000,-4.000000,4.000000,2.000000,0.415686,0.415686,0.415686,1.000000,1.000000,1.500000,-2.000000,4.000000,0.000000,0.545098,0.545098,0.545098,1.000000,1.000000,1.000000,-2.000000,4.000000,2.000000,0.450980,0.450980,0.450980,1.000000,0.500000,1.500000,0.000000,4.000000,0.000000,0.600000,0.600000,0.600000,1.000000,0.500000,1.000000,0.000000,4.000000,2.000000,0.415686,0.415686,0.415686,1.000000,0.000000,1.500000,2.000000,4.000000,0.000000,0.545098,0.545098,0.545098,1.000000,0.000000,1.000000,2.000000,4.000000,2.000000,
+0.435294,0.435294,0.435294,1.000000,1.500000,1.000000,-4.000000,4.000000,2.000000,0.341176,0.341176,0.341176,1.000000,1.500000,1.500000,-4.000000,4.000000,0.000000,0.415686,0.415686,0.415686,1.000000,1.000000,1.500000,-2.000000,4.000000,0.000000,
+0.356863,0.356863,0.356863,1.000000,0.000000,-0.500000,2.000000,4.000000,8.000000,0.364706,0.364706,0.364706,1.000000,0.500000,-0.500000,0.000000,4.000000,8.000000,0.427451,0.427451,0.427451,1.000000,0.000000,0.000000,2.000000,4.000000,6.000000,0.415686,0.415686,0.415686,1.000000,0.395020,-0.133318,0.420032,4.000000,6.533272,0.423529,0.423529,0.423529,1.000000,0.388550,-0.103582,0.445932,4.000000,6.414327,
+0.423529,0.423529,0.423529,1.000000,0.388550,-0.103582,0.445932,4.000000,6.414327,0.427451,0.427451,0.427451,1.000000,0.383423,-0.069344,0.466541,4.000000,6.277375,0.427451,0.427451,0.427451,1.000000,0.000000,0.000000,2.000000,4.000000,6.000000,0.435294,0.435294,0.435294,1.000000,0.380371,-0.034595,0.478689,4.000000,6.138380,0.439216,0.439216,0.439216,1.000000,0.379272,0.000000,0.482673,4.000000,6.000000,
+0.407843,0.407843,0.407843,1.000000,0.414673,-0.191394,0.341301,4.000000,6.765576,0.411765,0.411765,0.411765,1.000000,0.403687,-0.162957,0.385368,4.000000,6.651829,0.364706,0.364706,0.364706,1.000000,0.500000,-0.500000,0.000000,4.000000,8.000000,0.415686,0.415686,0.415686,1.000000,0.395020,-0.133318,0.420032,4.000000,6.533272,
+0.400000,0.400000,0.400000,1.000000,0.438232,-0.232438,0.247284,4.000000,6.929754,0.403922,0.403922,0.403922,1.000000,0.425171,-0.212276,0.299425,4.000000,6.849104,0.364706,0.364706,0.364706,1.000000,0.500000,-0.500000,0.000000,4.000000,8.000000,0.407843,0.407843,0.407843,1.000000,0.414673,-0.191394,0.341301,4.000000,6.765576,
+0.396078,0.396078,0.396078,1.000000,0.467285,-0.260554,0.130636,4.000000,7.042214,0.400000,0.400000,0.400000,1.000000,0.453857,-0.250068,0.184711,4.000000,7.000273,0.364706,0.364706,0.364706,1.000000,0.500000,-0.500000,0.000000,4.000000,8.000000,0.400000,0.400000,0.400000,1.000000,0.438232,-0.232438,0.247284,4.000000,6.929754,
+0.396078,0.396078,0.396078,1.000000,0.500000,-0.270672,0.000000,4.000000,7.082688,0.396078,0.396078,0.396078,1.000000,0.482788,-0.267902,0.068730,4.000000,7.071609,0.364706,0.364706,0.364706,1.000000,0.500000,-0.500000,0.000000,4.000000,8.000000,0.396078,0.396078,0.396078,1.000000,0.467285,-0.260554,0.130636,4.000000,7.042214,
+0.439216,0.439216,0.439216,1.000000,0.379272,0.000000,0.482673,4.000000,6.000000,0.474510,0.474510,0.474510,1.000000,0.379272,0.180448,0.482673,4.000000,5.278208,0.517647,0.517647,0.517647,1.000000,0.000000,0.500000,2.000000,4.000000,4.000000,0.513726,0.513726,0.513726,1.000000,0.379272,0.360896,0.482673,4.000000,4.556417,0.545098,0.545098,0.545098,1.000000,0.379272,0.500000,0.482673,4.000000,4.000000,
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+0.145098,0.145098,0.145098,1.000000,1.099976,1.500000,2.400003,4.000003,0.000000,0.145098,0.145098,0.145098,1.000000,0.699951,1.500000,0.800002,4.000002,0.000000,0.176471,0.176471,0.176471,1.000000,1.099976,1.100000,2.400002,2.400001,0.000000,0.262745,0.262745,0.262745,1.000000,0.699951,1.100000,0.800001,2.400001,0.000000,0.341176,0.341176,0.341176,1.000000,1.099976,0.700000,2.400002,0.800000,0.000000,0.580392,0.580392,0.580392,1.000000,0.699951,0.700000,0.800001,0.800000,0.000000,0.454902,0.454902,0.454902,1.000000,1.099976,0.300000,2.400002,-0.800000,0.000000,0.713726,0.713726,0.713726,1.000000,0.699951,0.300000,0.800001,-0.800000,0.000000,0.439216,0.439216,0.439216,1.000000,1.099976,-0.100000,2.400001,-2.400001,0.000000,0.631373,0.631373,0.631373,1.000000,0.699951,-0.100000,0.800001,-2.400001,0.000000,0.364706,0.364706,0.364706,1.000000,1.099976,-0.500000,2.400001,-4.000000,0.000000,0.458824,0.458824,0.458824,1.000000,0.699951,-0.500000,0.800000,-4.000000,0.000000
+
+};
+
+
+/* Object: skin_9 */
+
+int striplength_skin_9[]={
+18,0};
+
+float stripdata_skin_9[]={
+0.384314,0.384314,0.384314,1.000000,-0.500000,1.500000,-4.000000,4.000000,8.000000,0.384314,0.384314,0.384314,1.000000,1.500000,1.500000,4.000000,4.000000,8.000000,0.376471,0.376471,0.376471,1.000000,-0.500000,1.250000,-4.000000,3.695518,9.530733,0.403922,0.403922,0.403922,1.000000,1.500000,1.250000,4.000000,3.695518,9.530733,0.415686,0.415686,0.415686,1.000000,-0.500000,1.000000,-4.000000,2.828427,10.828427,0.431373,0.431373,0.431373,1.000000,1.500000,1.000000,4.000000,2.828427,10.828427,0.435294,0.435294,0.435294,1.000000,-0.500000,0.750000,-4.000000,1.530734,11.695518,0.443137,0.443137,0.443137,1.000000,1.500000,0.750000,4.000000,1.530734,11.695518,0.439216,0.439216,0.439216,1.000000,-0.500000,0.500000,-4.000000,0.000000,12.000000,0.435294,0.435294,0.435294,1.000000,1.500000,0.500000,4.000000,0.000000,12.000000,0.427451,0.427451,0.427451,1.000000,-0.500000,0.250000,-4.000000,-1.530734,11.695518,0.411765,0.411765,0.411765,1.000000,1.500000,0.250000,4.000000,-1.530734,11.695518,0.396078,0.396078,0.396078,1.000000,-0.500000,0.000000,-4.000000,-2.828427,10.828427,0.368627,0.368627,0.368627,1.000000,1.500000,0.000000,4.000000,-2.828427,10.828427,0.341176,0.341176,0.341176,1.000000,-0.500000,-0.250000,-4.000000,-3.695518,9.530733,0.301961,0.301961,0.301961,1.000000,1.500000,-0.250000,4.000000,-3.695518,9.530733,0.294118,0.294118,0.294118,1.000000,-0.500000,-0.500000,-4.000000,-4.000000,8.000000,0.294118,0.294118,0.294118,1.000000,1.500000,-0.500000,4.000000,-4.000000,8.000000
+
+};
+
+

progs/demos/winpos.c

@@ -1,4 +1,4 @@
-/* $Id: winpos.c,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: winpos.c,v 1.2 2000/06/27 17:04:43 brianp Exp $ */
 
 /*
  * Example of how to use the GL_MESA_window_pos extension.
@@ -8,8 +8,11 @@
 
 /*
  * $Log: winpos.c,v $
- * Revision 1.1  1999/08/19 00:55:40  jtg
- * Initial revision
+ * Revision 1.2  2000/06/27 17:04:43  brianp
+ * fixed compiler warnings
+ *
+ * Revision 1.1.1.1  1999/08/19 00:55:40  jtg
+ * Imported sources
  *
  * Revision 3.3  1999/03/28 18:24:37  brianp
  * minor clean-up
@@ -30,6 +33,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#define GL_GLEXT_LEGACY
 #include "GL/glut.h"
 
 #include "../util/readtex.c"  /* a hack, I know */

progs/redbook/Imakefile

@@ -219,4 +219,3 @@ NormalProgramTarget(xfont,xfont.o,NullParameter,$(LOCAL_LIBRARIES),NullParameter
 
 DependTarget()
  
-

progs/redbook/Makefile.X11

@@ -1,4 +1,4 @@
-# $Id: Makefile.X11,v 1.2 1999/10/27 10:09:53 brianp Exp $
+# $Id: Makefile.X11,v 1.3 2000/02/16 01:09:06 brianp Exp $
 
 # Mesa 3-D graphics library
 # Version:  3.1
@@ -12,7 +12,7 @@
 INCDIR = ../include
 LIBDIR = ../lib
 
-GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(XLIBS)
+GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(APP_LIB_DEPS)
 
 LIB_DEP = $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GLU_LIB) $(LIBDIR)/$(GLUT_LIB)
 

progs/redbook/polyoff.c

@@ -47,11 +47,14 @@
 
 #ifdef GL_VERSION_1_1
 GLuint list;
-GLint spinx = 0;
-GLint spiny = 0;
+GLint fill = 1;
+GLfloat spinx = 0;
+GLfloat spiny = 0;
 GLfloat tdist = 0.0;
 GLfloat polyfactor = 1.0;
 GLfloat polyunits = 1.0;
+GLboolean doubleBuffer;
+
 
 /*  display() draws two spheres, one with a gray, diffuse material,
  *  the other sphere with a magenta material with a specular highlight.
@@ -70,22 +73,34 @@ void display (void)
     glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
     glMaterialfv(GL_FRONT, GL_SPECULAR, black);
     glMaterialf(GL_FRONT, GL_SHININESS, 0.0);
-    glEnable(GL_LIGHTING);
-    glEnable(GL_LIGHT0);
-    glEnable(GL_POLYGON_OFFSET_FILL);
-    glPolygonOffset(polyfactor, polyunits);
-    glCallList (list);
-    glDisable(GL_POLYGON_OFFSET_FILL);
+    if (fill) { 
+       glEnable(GL_LIGHTING);
+       glEnable(GL_LIGHT0);
+       glEnable(GL_POLYGON_OFFSET_FILL);
+       glPolygonOffset(polyfactor, polyunits);
+       glCallList (list);
+       glDisable(GL_POLYGON_OFFSET_FILL);
+    }
 
     glDisable(GL_LIGHTING);
     glDisable(GL_LIGHT0);
     glColor3f (1.0, 1.0, 1.0);
     glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+    glPolygonOffset(-polyfactor, -polyunits);
+    if (!fill) glEnable(GL_POLYGON_OFFSET_LINE); 
     glCallList (list);
+    glDisable(GL_POLYGON_OFFSET_LINE);
     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 
+    if (!fill) { 
+       glEnable(GL_LIGHTING);
+       glEnable(GL_LIGHT0);
+       glCallList (list);
+    }
+
     glPopMatrix ();
     glFlush ();
+    if (doubleBuffer) glutSwapBuffers();
 }
 
 /*  specify initial properties
@@ -130,6 +145,32 @@ void reshape(int width, int height)
     gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
 }
 
+static void Benchmark( float xdiff, float ydiff )
+{
+   int startTime, endTime;
+   int draws;
+   double seconds, fps, triPerSecond;
+
+   printf("Benchmarking...\n");
+
+   draws = 0;
+   startTime = glutGet(GLUT_ELAPSED_TIME);
+   spinx = spiny = 0.0;
+   do {
+      spinx += xdiff;
+      spiny += ydiff;
+      display();
+      draws++;
+      endTime = glutGet(GLUT_ELAPSED_TIME);
+   } while (endTime - startTime < 5000);   /* 5 seconds */
+
+   /* Results */
+   seconds = (double) (endTime - startTime) / 1000.0;
+   fps = draws / seconds;
+   printf("Result:  fps: %g\n", fps);
+}
+
+
 /*  call when mouse button is pressed  */
 /* ARGSUSED2 */
 void mouse(int button, int state, int x, int y) {
@@ -137,7 +178,7 @@ void mouse(int button, int state, int x, int y) {
 	case GLUT_LEFT_BUTTON:
 	    switch (state) {
 		case GLUT_DOWN:
-		    spinx = (spinx + 5) % 360;
+		    spinx += 5;
                     glutPostRedisplay();
 		    break;
 		default:
@@ -147,7 +188,7 @@ void mouse(int button, int state, int x, int y) {
 	case GLUT_MIDDLE_BUTTON:
 	    switch (state) {
 		case GLUT_DOWN:
-		    spiny = (spiny + 5) % 360;
+		    spiny += 5;
                     glutPostRedisplay();
 		    break;
 		default:
@@ -204,6 +245,20 @@ void keyboard (unsigned char key, int x, int y)
 	 printf ("polyunits is %f\n", polyunits);
          glutPostRedisplay();
          break;
+      case 'b':
+	 Benchmark(5.0, 0);
+	 break;
+      case 'B':
+	 Benchmark(0, 5.0);
+	 break;
+      case ' ':
+	 fill = !fill;
+	 printf ("fill/line: %d\n", fill);
+         glutPostRedisplay();
+         break;
+      case 27:  /* Escape */
+         exit(0);
+         break;
       default:
          break;
    }
@@ -222,21 +277,47 @@ key(unsigned char k, int x, int y)
   glutPostRedisplay();
 }
 
+GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    printf("%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+
 /*  Main Loop
  *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
 {
+    GLuint type;
     glutInit(&argc, argv);
-    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
-    glutCreateWindow(argv[0]);
+
+    Args(argc, argv);
+
+    type = GLUT_DEPTH | GLUT_RGB;
+     type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+
+    glutInitDisplayMode(type);
+    glutCreateWindow("polyoff");
     glutReshapeFunc(reshape);
     glutDisplayFunc(display);
     glutMouseFunc(mouse);
     glutKeyboardFunc(keyboard);
     gfxinit();
-    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;
 }

progs/redbook/tesswind.c

@@ -64,30 +64,30 @@ GLuint list;
 void makeNewLists (void) {
    int i;
    static GLdouble rects[12][3] = 
-      {50.0, 50.0, 0.0, 300.0, 50.0, 0.0, 
-       300.0, 300.0, 0.0, 50.0, 300.0, 0.0,
-       100.0, 100.0, 0.0, 250.0, 100.0, 0.0, 
-       250.0, 250.0, 0.0, 100.0, 250.0, 0.0,
-       150.0, 150.0, 0.0, 200.0, 150.0, 0.0, 
-       200.0, 200.0, 0.0, 150.0, 200.0, 0.0};
+      {{ 50.0,  50.0, 0.0}, {300.0,  50.0, 0.0}, 
+       {300.0, 300.0, 0.0}, { 50.0, 300.0, 0.0},
+       {100.0, 100.0, 0.0}, {250.0, 100.0, 0.0}, 
+       {250.0, 250.0, 0.0}, {100.0, 250.0, 0.0},
+       {150.0, 150.0, 0.0}, {200.0, 150.0, 0.0}, 
+       {200.0, 200.0, 0.0}, {150.0, 200.0, 0.0}};
    static GLdouble spiral[16][3] = 
-      {400.0, 250.0, 0.0, 400.0, 50.0, 0.0, 
-       50.0, 50.0, 0.0, 50.0, 400.0, 0.0, 
-       350.0, 400.0, 0.0, 350.0, 100.0, 0.0, 
-       100.0, 100.0, 0.0, 100.0, 350.0, 0.0, 
-       300.0, 350.0, 0.0, 300.0, 150.0, 0.0, 
-       150.0, 150.0, 0.0, 150.0, 300.0, 0.0, 
-       250.0, 300.0, 0.0, 250.0, 200.0, 0.0, 
-       200.0, 200.0, 0.0, 200.0, 250.0, 0.0};
+      {{400.0, 250.0, 0.0}, {400.0,  50.0, 0.0}, 
+       { 50.0,  50.0, 0.0}, { 50.0, 400.0, 0.0}, 
+       {350.0, 400.0, 0.0}, {350.0, 100.0, 0.0}, 
+       {100.0, 100.0, 0.0}, {100.0, 350.0, 0.0}, 
+       {300.0, 350.0, 0.0}, {300.0, 150.0, 0.0}, 
+       {150.0, 150.0, 0.0}, {150.0, 300.0, 0.0}, 
+       {250.0, 300.0, 0.0}, {250.0, 200.0, 0.0}, 
+       {200.0, 200.0, 0.0}, {200.0, 250.0, 0.0}};
    static GLdouble quad1[4][3] = 
-      {50.0, 150.0, 0.0, 350.0, 150.0, 0.0, 
-      350.0, 200.0, 0.0, 50.0, 200.0, 0.0};
+      {{ 50.0, 150.0, 0.0}, {350.0, 150.0, 0.0}, 
+       {350.0, 200.0, 0.0}, { 50.0, 200.0, 0.0}};
    static GLdouble quad2[4][3] =
-      {100.0, 100.0, 0.0, 300.0, 100.0, 0.0, 
-       300.0, 350.0, 0.0, 100.0, 350.0, 0.0};
+      {{100.0, 100.0, 0.0}, {300.0, 100.0, 0.0}, 
+       {300.0, 350.0, 0.0}, {100.0, 350.0, 0.0}};
    static GLdouble tri[3][3] =
-      {200.0, 50.0, 0.0, 250.0, 300.0, 0.0,
-       150.0, 300.0, 0.0};
+      {{200.0, 50.0, 0.0}, {250.0, 300.0, 0.0},
+       {150.0, 300.0, 0.0}};
  
    gluTessProperty(tobj, GLU_TESS_WINDING_RULE, 
                    currentWinding);

progs/samples/Imakefile

@@ -99,4 +99,3 @@ NormalProgramTarget(wave,wave.o,NullParameter,$(LOCAL_LIBRARIES),NullParameter)
 
 DependTarget()
  
-

progs/samples/Makefile.X11

@@ -1,20 +1,18 @@
-# $Id: Makefile.X11,v 1.2 1999/10/27 10:09:53 brianp Exp $
+# $Id: Makefile.X11,v 1.3 2000/02/16 01:09:06 brianp Exp $
 
 # Mesa 3-D graphics library
-# Version:  3.1
+# Version:  3.3
 # Copyright (C) 1995-1999  Brian Paul
 
-
 # Makefile for assorted SGI OpenGL demos
 
 
-
 ##### MACROS #####
 
 INCDIR = ../include
 LIBDIR = ../lib
 
-GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(XLIBS)
+GL_LIBS = -L$(LIBDIR) -lglut -lGLU -lGL $(APP_LIB_DEPS)
 
 LIB_DEP = $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GLU_LIB) $(LIBDIR)/$(GLUT_LIB)
 
@@ -23,7 +21,6 @@ PROGS = accum bitmap1 bitmap2 blendeq blendxor copy cursor depth eval fog \
 	shape sphere star stencil stretch texture tri wave
 
 
-
 ##### RULES #####
 
 .SUFFIXES:

progs/samples/fog.c

@@ -41,55 +41,55 @@ GLint cubeList = 1;
 float scp[18][3] = {
     {
 	1.000000, 0.000000, 0.000000
-    },	
+    },
     {
 	1.000000, 0.000000, 5.000000
     },
     {
 	0.707107, 0.707107, 0.000000
-    },	
+    },
     {
 	0.707107, 0.707107, 5.000000
     },
     {
 	0.000000, 1.000000, 0.000000
-    },	
+    },
     {
 	0.000000, 1.000000, 5.000000
     },
     {
 	-0.707107, 0.707107, 0.000000
-    },	
+    },
     {
 	-0.707107, 0.707107, 5.000000
     },
     {
 	-1.000000, 0.000000, 0.000000
-    },	
+    },
     {
 	-1.000000, 0.000000, 5.000000
     },
     {
 	-0.707107, -0.707107, 0.000000
-    },	
+    },
     {
 	-0.707107, -0.707107, 5.000000
     },
     {
 	0.000000, -1.000000, 0.000000
-    },	
+    },
     {
 	0.000000, -1.000000, 5.000000
     },
     {
 	0.707107, -0.707107, 0.000000
-    },	
+    },
     {
 	0.707107, -0.707107, 5.000000
     },
     {
 	1.000000, 0.000000, 0.000000
-    },	
+    },
     {
 	1.000000, 0.000000, 5.000000
     },
@@ -136,7 +136,7 @@ static void Init(void)
     static float back_mat_diffuse[] = {1.0, 0.0, 0.0, 1.0};
     static float lmodel_ambient[] = {0.0, 0.0, 0.0, 1.0};
     static float fog_color[] = {0.8, 0.8, 0.8, 1.0};
-    
+
     glFrontFace(GL_CW);
 
     glEnable(GL_DEPTH_TEST);
@@ -148,7 +148,7 @@ static void Init(void)
     glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
-    
+
     glMaterialfv(GL_FRONT, GL_SHININESS, front_mat_shininess);
     glMaterialfv(GL_FRONT, GL_SPECULAR, front_mat_specular);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, front_mat_diffuse);
@@ -258,7 +258,7 @@ static GLenum Args(int argc, char **argv)
     GLint i;
 
     rgb = GL_TRUE;
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-ci") == 0) {

progs/samples/line.c

@@ -123,7 +123,7 @@ static void Draw(void)
     } else {
 	glDisable(GL_LINE_STIPPLE);
     }
-    
+
     if (mode2) {
 	ci = CI_OFFSET;
 	glEnable(GL_LINE_SMOOTH);
@@ -170,7 +170,7 @@ static GLenum Args(int argc, char **argv)
     GLint i;
 
     rgb = GL_TRUE;
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-ci") == 0) {

progs/samples/logo.c

@@ -1,4 +1,4 @@
-/* $Id: logo.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
+/* $Id: logo.c,v 1.2 1999/12/15 13:02:09 brianp Exp $ */
 
 /*
  * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
@@ -108,16 +108,16 @@ GLubyte *image = checkImage;
 GLint imageHeight = CHECKIMAGEHEIGHT;
 GLint imageWidth = CHECKIMAGEWIDTH;
 
-float decal[] = {
+static float decal[] = {
     GL_DECAL,
 };
-float modulate[] = {
+static float modulate[] = {
     GL_MODULATE,
 };
-float repeat[] = {
+static float repeat[] = {
     GL_REPEAT,
 };
-float nearest[] = {
+static float nearest[] = {
     GL_NEAREST,
 };
 

progs/samples/olympic.c

@@ -26,7 +26,7 @@
  * Nov 20, 1995 use stdlib's rand()/srand() instead of random()/srand48(), etc.
  */
 
-/* 
+/*
  * Modified by Li Wei(liwei@aiar.xjtu.edu.cn) to be able to run in Windows
  * 6/13
  *
@@ -83,7 +83,7 @@ void FillTorus(float rc, int numc, float rt, int numt)
 
     pi = 3.14159265358979323846;
     twopi = 2 * pi;
- 
+
     for (i = 0; i < numc; i++) {
 	glBegin(GL_QUAD_STRIP);
         for (j = 0; j <= numt; j++) {
@@ -136,7 +136,7 @@ void DrawScene(void)
     }
 
     glPushMatrix();
-    
+
     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
     gluLookAt(0,0,10, 0,0,0, 0,1,0);
 
@@ -252,7 +252,7 @@ void Init(void)
     dests[GREENRING][1] = bottom_y;
     dests[GREENRING][2] = bottom_z;
 
-    base = 2.0; 
+    base = 2.0;
     height = 2.0;
     theTorus = glGenLists(1);
     glNewList(theTorus, GL_COMPILE);
@@ -321,7 +321,7 @@ GLenum Args(int argc, char **argv)
     GLint i;
 
     rgb = GL_TRUE;
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-ci") == 0) {

progs/samples/overlay.c

@@ -326,7 +326,7 @@ static GLenum Args(int argc, char **argv)
 {
     GLint i;
 
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-sb") == 0) {

progs/samples/sphere.c

@@ -85,7 +85,7 @@ float c[6][4][4][3] = {
 	{
 	    {
 		1.0, 1.0, -1.0
-	    }, 
+	    },
 	    {
 		0.0, 1.0, -1.0
 	    },
@@ -102,10 +102,10 @@ float c[6][4][4][3] = {
 	    },
 	    {
 		-1.0, 1.0, -1.0
-	    }, 
+	    },
 	    {
 		-1.0, 0.0, -1.0
-	    }, 
+	    },
 	    {
 		0.0, 0.0, -1.0
 	    },
@@ -269,7 +269,7 @@ float c[6][4][4][3] = {
 	    {
 		-1.0, 0.0, -1.0
 	    },
-	}, 
+	},
 	{
 	    {
 		-1.0, 1.0, 0.0
@@ -283,7 +283,7 @@ float c[6][4][4][3] = {
 	    {
 		-1.0, 0.0, 0.0
 	    },
-	}, 
+	},
 	{
 	    {
 		-1.0, 0.0, 1.0
@@ -297,7 +297,7 @@ float c[6][4][4][3] = {
 	    {
 		-1.0, 0.0, 0.0
 	    },
-	}, 
+	},
 	{
 	    {
 		-1.0, -1.0, 0.0
@@ -311,7 +311,7 @@ float c[6][4][4][3] = {
 	    {
 		-1.0, 0.0, 0.0
 	    },
-	}, 
+	},
     },
     {
 	{
@@ -463,8 +463,8 @@ GLfloat identity[16] = {
 void BuildCylinder(int numEdges)
 {
     int i, top = 1.0, bottom = -1.0;
-    float x[100], y[100], angle; 
-    
+    float x[100], y[100], angle;
+
     for (i = 0; i <= numEdges; i++) {
 	angle = i * 2.0 * PI / numEdges;
 	x[i] = cos(angle);   /* was cosf() */
@@ -505,7 +505,7 @@ void BuildTorus(float rc, int numc, float rt, int numt)
 
     pi = 3.14159265358979323846;
     twopi = 2.0 * pi;
- 
+
     glNewList(torus, GL_COMPILE);
     for (i = 0; i < numc; i++) {
 	glBegin(GL_QUAD_STRIP);
@@ -542,7 +542,7 @@ void BuildCage(void)
     left   = -4.0;
     bottom = -4.0;
     right  = 4.0;
-    top    = 4.0; 
+    top    = 4.0;
 
     inc = 2.0 * 4.0 * 0.1;
 
@@ -631,7 +631,7 @@ void BuildCube(void)
     glNewList(cube, GL_COMPILE);
     for (i = 0; i < 6; i++) {
 	for (j = 0; j < 4; j++) {
-	    glNormal3fv(n[i]); 
+	    glNormal3fv(n[i]);
 	    glBegin(GL_POLYGON);
 		glVertex3fv(c[i][j][0]);
 		glVertex3fv(c[i][j][1]);
@@ -670,7 +670,7 @@ void SetDeepestColor(void)
     glGetIntegerv(GL_BLUE_BITS, &blueBits);
 
     deepestColor = (redBits >= greenBits) ? COLOR_RED : COLOR_GREEN;
-    deepestColor = (deepestColor >= blueBits) ? deepestColor : COLOR_BLUE; 
+    deepestColor = (deepestColor >= blueBits) ? deepestColor : COLOR_BLUE;
 }
 
 void SetDefaultSettings(void)
@@ -726,17 +726,17 @@ void Init(void)
 	image->data = AlphaPadImage(image->sizeX*image->sizeY,
                                     image->data, 128);
 	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-	gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents, 
-			  image->sizeX, image->sizeY, 
+	gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
+			  image->sizeX, image->sizeY,
 			  GL_RGBA, GL_UNSIGNED_BYTE, image->data);
     } else {
 	image = LoadPPM(imageFileName);
 	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-	gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents, 
-			  image->sizeX, image->sizeY, 
+	gluBuild2DMipmaps(GL_TEXTURE_2D, numComponents,
+			  image->sizeX, image->sizeY,
 			  GL_RGB, GL_UNSIGNED_BYTE, image->data);
     }
-    
+
     glFogf(GL_FOG_DENSITY, 0.125);
     glFogi(GL_FOG_MODE, GL_LINEAR);
     glFogf(GL_FOG_START, 4.0);
@@ -747,7 +747,7 @@ void Init(void)
     glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
     glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
     glLightfv(GL_LIGHT0, GL_POSITION, position);
-    
+
     glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
     glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
     glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
@@ -845,7 +845,7 @@ void Draw(void)
     if (autoRotate) {
 	xRotation += .75;
 	yRotation += .375;
-    } 
+    }
     glutSwapBuffers();
 }
 
@@ -964,7 +964,7 @@ GLenum Args(int argc, char **argv)
 {
     GLint i;
 
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
     numComponents = 4;
 
     for (i = 1; i < argc; i++) {

progs/samples/star.c

@@ -281,7 +281,7 @@ static GLenum Args(int argc, char **argv)
 {
     GLint i;
 
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-sb") == 0) {

progs/samples/stretch.c

@@ -285,7 +285,7 @@ static GLenum Args(int argc, char **argv)
 {
     GLint i;
 
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
 
     for (i = 1; i < argc; i++) {
 	if (strcmp(argv[i], "-sb") == 0) {

progs/samples/wave.c

@@ -128,7 +128,7 @@ static void Animate(void)
 		    glColor3fv(facet->color);
 		} else {
 		    thisColor = facet->color;
-		    glMaterialfv(GL_FRONT_AND_BACK, GL_COLOR_INDEXES, 
+		    glMaterialfv(GL_FRONT_AND_BACK, GL_COLOR_INDEXES,
 				 facet->color);
 		}
 	    } else {
@@ -182,7 +182,7 @@ static void Animate(void)
     }
 }
 
-static void SetColorMap(void) 
+static void SetColorMap(void)
 {
     static float green[3] = {0.2, 1.0, 0.2};
     static float red[3] = {1.0, 0.2, 0.2};
@@ -360,7 +360,7 @@ static void InitMaterials(void)
     glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
-    
+
     glMaterialfv(GL_FRONT, GL_SHININESS, front_mat_shininess);
     glMaterialfv(GL_FRONT, GL_SPECULAR, front_mat_specular);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, front_mat_diffuse);
@@ -394,7 +394,7 @@ static void Init(void)
     glClearColor(0.0, 0.0, 0.0, 0.0);
 
     glShadeModel(GL_FLAT);
-    
+
     glFrontFace(GL_CW);
 
     glEnable(GL_DEPTH_TEST);
@@ -515,7 +515,7 @@ static GLenum Args(int argc, char **argv)
     GLint i;
 
     rgb = GL_TRUE;
-    doubleBuffer = GL_FALSE;
+    doubleBuffer = GL_TRUE;
     frames = 10;
     widthX = 10;
     widthY = 10;

progs/util/readtex.c

@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <stdlib.h> 
 #include <string.h>
+#include "readtex.h"
 
 
 #ifndef SEEK_SET
@@ -265,6 +266,15 @@ static void FreeImage( TK_RGBImageRec *image )
  * Return:  GL_TRUE if success, GL_FALSE if error.
  */
 GLboolean LoadRGBMipmaps( const char *imageFile, GLint intFormat )
+{
+   GLint w, h;
+   return LoadRGBMipmaps2( imageFile, GL_TEXTURE_2D, intFormat, &w, &h );
+}
+
+
+
+GLboolean LoadRGBMipmaps2( const char *imageFile, GLenum target,
+                           GLint intFormat, GLint *width, GLint *height )
 {
    GLint error;
    GLenum format;
@@ -289,14 +299,18 @@ GLboolean LoadRGBMipmaps( const char *imageFile, GLint intFormat )
       return GL_FALSE;
    }
 
-   error = gluBuild2DMipmaps( GL_TEXTURE_2D,
+   error = gluBuild2DMipmaps( target,
                               intFormat,
                               image->sizeX, image->sizeY,
                               format,
                               GL_UNSIGNED_BYTE,
                               image->data );
 
+   *width = image->sizeX;
+   *height = image->sizeY;
+
    FreeImage(image);
+
    return error ? GL_FALSE : GL_TRUE;
 }