mesa: Remember client active texture in _mesa_meta_draw_tex.

Add _eglSetLogger and _eglSetLogLevel to allow drivers to change the
message logger or report level.

Android.mk

@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)

Makefile

@@ -105,6 +105,8 @@ irix6-n32-static \
 irix6-o32 \
 irix6-o32-static \
 linux \
+mine \
+mine-dri \
 linux-alpha \
 linux-alpha-static \
 linux-cell \
@@ -182,7 +184,7 @@ ultrix-gcc:
 
 # Rules for making release tarballs
 
-VERSION=7.6-devel
+VERSION=7.7-devel
 DIRECTORY = Mesa-$(VERSION)
 LIB_NAME = MesaLib-$(VERSION)
 DEMO_NAME = MesaDemos-$(VERSION)
@@ -303,10 +305,25 @@ MAIN_FILES = \
 	$(DIRECTORY)/progs/util/sampleMakefile				\
 	$(DIRECTORY)/windows/VC8/
 
-EGL_FILES = \
-	$(DIRECTORY)/include/EGL/*.h					\
+ES_FILES = \
 	$(DIRECTORY)/include/GLES/*.h					\
 	$(DIRECTORY)/include/GLES2/*.h					\
+	$(DIRECTORY)/src/mesa/glapi/*.xml				\
+	$(DIRECTORY)/src/mesa/glapi/*.py				\
+	$(DIRECTORY)/src/mesa/glapi/*.dtd				\
+	$(DIRECTORY)/src/mesa/es/glapi/Makefile				\
+	$(DIRECTORY)/src/mesa/es/glapi/*.xml				\
+	$(DIRECTORY)/src/mesa/es/glapi/*.py				\
+	$(DIRECTORY)/src/mesa/es/state_tracker/*.[ch]			\
+	$(DIRECTORY)/src/mesa/es/main/*.[ch]				\
+	$(DIRECTORY)/src/mesa/es/main/*.py				\
+	$(DIRECTORY)/src/mesa/es/main/*.txt				\
+	$(DIRECTORY)/src/mesa/es/main/es*_special			\
+	$(DIRECTORY)/src/mesa/es/Makefile				\
+	$(DIRECTORY)/src/mesa/es/sources.mak				\
+
+EGL_FILES = \
+	$(DIRECTORY)/include/EGL/*.h					\
 	$(DIRECTORY)/src/egl/Makefile					\
 	$(DIRECTORY)/src/egl/*/Makefile					\
 	$(DIRECTORY)/src/egl/*/*.[ch]					\
@@ -471,6 +488,7 @@ DEPEND_FILES = \
 
 LIB_FILES = \
 	$(MAIN_FILES)		\
+	$(ES_FILES)		\
 	$(EGL_FILES)		\
 	$(GALLIUM_FILES)	\
 	$(DRI_FILES)		\

common.py

@@ -59,7 +59,7 @@ def AddOptions(opts):
 	opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,
 											 allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
 	opts.Add(EnumOption('platform', 'target platform', default_platform,
-											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince')))
+											 allowed_values=('linux', 'cell', 'windows', 'winddk', 'wince', 'darwin')))
 	opts.Add(EnumOption('toolchain', 'compiler toolchain', 'default',
 											 allowed_values=('default', 'crossmingw', 'winsdk', 'winddk')))
 	opts.Add(BoolOption('llvm', 'use LLVM', 'no'))

configs/default

@@ -9,7 +9,7 @@ CONFIG_NAME = default
 
 # Version info
 MESA_MAJOR=7
-MESA_MINOR=6
+MESA_MINOR=7
 MESA_TINY=0
 MESA_VERSION = $(MESA_MAJOR).$(MESA_MINOR).$(MESA_TINY)
 

configs/mine

@@ -0,0 +1,82 @@
+# -*-makefile-*-
+# Configuration for linux-dri: Linux DRI hardware drivers for XFree86 & others
+
+include $(TOP)/configs/default
+
+CONFIG_NAME = mine
+
+# Compiler and flags
+CC = ccache gcc
+CXX = ccache g++
+
+#MKDEP = /usr/X11R6/bin/makedepend
+#MKDEP = gcc -M
+#MKDEP_OPTIONS = -MF depend
+
+OPT_FLAGS  = -O0 -g
+PIC_FLAGS  = -fPIC
+
+# Add '-DGLX_USE_TLS' to ARCH_FLAGS to enable TLS support.
+ARCH_FLAGS ?=
+
+DEFINES = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE \
+	-D_BSD_SOURCE -D_GNU_SOURCE \
+	-DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 \
+	-DGLX_DIRECT_RENDERING \
+	-DHAVE_ALIAS -DHAVE_POSIX_MEMALIGN
+
+X11_INCLUDES = -I/usr/X11R6/include
+
+CFLAGS = -Wall -Wmissing-prototypes -std=c99 -ffast-math \
+	$(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES) $(ASM_FLAGS)
+
+CXXFLAGS = -Wall $(OPT_FLAGS) $(PIC_FLAGS) $(ARCH_FLAGS) $(DEFINES)
+
+GLUT_CFLAGS = -fexceptions
+
+# Work around aliasing bugs - developers should comment this out
+CFLAGS += -fno-strict-aliasing
+CXXFLAGS += -fno-strict-aliasing
+
+MESA_ASM_SOURCES = 
+
+# Library/program dependencies
+EXTRA_LIB_PATH=-L/usr/X11R6/lib
+
+DRI_LIB_DEPS  = $(EXTRA_LIB_PATH) -lm -lpthread -lexpat -ldl $(LIBDRM_LIB)
+GL_LIB_DEPS   = $(EXTRA_LIB_PATH) -lX11 -lXext -lXxf86vm -lXdamage -lXfixes \
+		-lm -lpthread -ldl $(LIBDRM_LIB)
+
+
+# Directories
+SRC_DIRS = egl mesa gallium gallium/winsys
+PROGRAM_DIRS := egl openvg/demos demos xdemos
+
+# EGL directories
+EGL_DRIVERS_DIRS = glx xdri
+
+ifeq ($(USE_DRI),yes)
+DEFINES += -DIN_DRI_DRIVER -DGLX_INDIRECT_RENDERING
+
+LIBDRM_CFLAGS = $(shell pkg-config --cflags libdrm)
+LIBDRM_LIB = $(shell pkg-config --libs libdrm)
+
+SRC_DIRS := glx/x11 $(SRC_DIRS)
+DRIVER_DIRS = dri
+WINDOW_SYSTEM = dri
+DRI_DIRS = i915
+
+GALLIUM_WINSYS_DIRS = drm egl_xlib
+GALLIUM_WINSYS_DRM_DIRS = intel
+GALLIUM_STATE_TRACKERS_DIRS = egl glx vega
+
+else
+
+DRIVER_DIRS =
+WINDOW_SYSTEM =
+DRI_DIRS =
+
+GALLIUM_WINSYS_DIRS = egl_xlib xlib
+GALLIUM_STATE_TRACKERS_DIRS = glx vega
+
+endif

configs/mine-dri

@@ -0,0 +1,5 @@
+# -*-makefile-*-
+# Configuration for linux-dri: Linux DRI hardware drivers for XFree86 & others
+
+USE_DRI = yes
+include $(TOP)/configs/mine

docs/relnotes-7.7.html

@@ -0,0 +1,53 @@
+<HTML>
+
+<TITLE>Mesa Release Notes</TITLE>
+
+<head><link rel="stylesheet" type="text/css" href="mesa.css"></head>
+
+<BODY>
+
+<body bgcolor="#eeeeee">
+
+<H1>Mesa 7.7 Release Notes / date TBD</H1>
+
+<p>
+Mesa 7.7 is a new development release.
+People who are concerned with stability and reliability should stick
+with a previous release or wait for Mesa 7.7.1.
+</p>
+<p>
+Mesa 7.7 implements the OpenGL 2.1 API, but the version reported by
+glGetString(GL_VERSION) depends on the particular driver being used.
+Some drivers don't support all the features required in OpenGL 2.1.
+</p>
+<p>
+See the <a href="install.html">Compiling/Installing page</a> for prerequisites
+for DRI hardware acceleration.
+</p>
+
+
+<h2>MD5 checksums</h2>
+<pre>
+tbd
+</pre>
+
+
+<h2>New features</h2>
+<ul>
+<li>GL_ARB_draw_elements_base_vertex (supported in Intel i965 and software drivers)</li>
+<li>GL_ARB_depth_clamp (supported in Intel i965 DRI and software drivers)</li>
+<li>GL_NV_depth_clamp (supported in Intel i965 DRI and software drivers)</li>
+</ul>
+
+
+<h2>Bug fixes</h2>
+<ul>
+</ul>
+
+
+<h2>Changes</h2>
+<ul>
+</ul>
+
+</body>
+</html>

docs/relnotes.html

@@ -13,6 +13,7 @@ The release notes summarize what's new or changed in each Mesa release.
 </p>
 
 <UL>
+<LI><A HREF="relnotes-7.7.html">7.7 release notes</A>
 <LI><A HREF="relnotes-7.6.html">7.6 release notes</A>
 <LI><A HREF="relnotes-7.5.2.html">7.5.2 release notes</A>
 <LI><A HREF="relnotes-7.5.1.html">7.5.1 release notes</A>

include/EGL/eglext.h

@@ -6,7 +6,7 @@ extern "C" {
 #endif
 
 /*
-** Copyright (c) 2007 The Khronos Group Inc.
+** Copyright (c) 2007-2009 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
@@ -33,9 +33,9 @@ extern "C" {
 /*************************************************************/
 
 /* Header file version number */
-/* eglext.h last updated 2007/11/20 */
 /* Current version at http://www.khronos.org/registry/egl/ */
-#define EGL_EGLEXT_VERSION 1
+/* $Revision: 7244 $ on $Date: 2009-01-20 17:06:59 -0800 (Tue, 20 Jan 2009) $ */
+#define EGL_EGLEXT_VERSION 3
 
 #ifndef EGL_KHR_config_attribs
 #define EGL_KHR_config_attribs 1
@@ -79,12 +79,12 @@ typedef EGLBoolean (EGLAPIENTRYP PFNEGLUNLOCKSURFACEKHRPROC) (EGLDisplay display
 #define EGL_KHR_image 1
 #define EGL_NATIVE_PIXMAP_KHR			0x30B0	/* eglCreateImageKHR target */
 typedef void *EGLImageKHR;
-extern const EGLImageKHR EGL_NO_IMAGE_KHR;
+#define EGL_NO_IMAGE_KHR			((EGLImageKHR)0)
 #ifdef EGL_EGLEXT_PROTOTYPES
-EGLAPI EGLImageKHR EGLAPIENTRY eglCreateImageKHR (EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, EGLint *attr_list);
+EGLAPI EGLImageKHR EGLAPIENTRY eglCreateImageKHR (EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list);
 EGLAPI EGLBoolean EGLAPIENTRY eglDestroyImageKHR (EGLDisplay dpy, EGLImageKHR image);
 #endif /* EGL_EGLEXT_PROTOTYPES */
-typedef EGLImageKHR (EGLAPIENTRYP PFNEGLCREATEIMAGEKHRPROC) (EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, EGLint *attr_list);
+typedef EGLImageKHR (EGLAPIENTRYP PFNEGLCREATEIMAGEKHRPROC) (EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list);
 typedef EGLBoolean (EGLAPIENTRYP PFNEGLDESTROYIMAGEKHRPROC) (EGLDisplay dpy, EGLImageKHR image);
 #endif
 
@@ -179,6 +179,17 @@ typedef EGLBoolean (EGLAPIENTRYP PFNEGLCOPYCONTEXTMESA) (EGLDisplay dpy, EGLCont
 
 #endif /* EGL_MESA_copy_context */
 
+#ifndef EGL_KHR_image_base
+#define EGL_KHR_image_base 1
+/* Most interfaces defined by EGL_KHR_image_pixmap above */
+#define EGL_IMAGE_PRESERVED_KHR			0x30D2	/* eglCreateImageKHR attribute */
+#endif
+
+#ifndef EGL_KHR_image_pixmap
+#define EGL_KHR_image_pixmap 1
+/* Interfaces defined by EGL_KHR_image above */
+#endif
+
 #ifdef __cplusplus
 }
 #endif

include/EGL/internal/eglimage_dri.h

@@ -0,0 +1,27 @@
+#ifndef EGLIMAGE_DRI_INCLUDED
+#define EGLIMAGE_DRI_INCLUDED
+
+#include "GL/internal/dri_interface.h"
+
+#define __DRI_EGL_IMAGE_MAGIC \
+   (('D' << 24) | \
+    ('R' << 16) | \
+    ('I' <<  8) | \
+    ('0'))
+
+typedef void *__DRIEGLImageHandle;
+typedef struct __DRIEGLImageRec __DRIEGLImage;
+
+struct __DRIEGLImageRec {
+   GLint magic;
+
+   __DRIdrawable *drawable;
+
+   GLboolean texture_format_rgba;
+   GLint level;
+   GLint __pad[4];
+};
+
+extern __DRIEGLImage *_eglClientGetImageData(__DRIEGLImageHandle handle);
+
+#endif /* EGLIMAGE_DRI_INCLUDED */

include/GL/internal/dri_interface.h

@@ -708,6 +708,19 @@ struct __DRIdri2LoaderExtensionRec {
 					 int *out_count, void *loaderPrivate);
 };
 
+#define __DRI_COPY_BUFFER "DRI_CopyBuffer"
+#define __DRI_COPY_BUFFER_VERSION 1
+typedef struct __DRIcopyBufferExtensionRec __DRIcopyBufferExtension;
+struct __DRIcopyBufferExtensionRec {
+    __DRIextension base;
+
+    int (*copyBuffer)(__DRIcontext *context,
+		      __DRIbuffer *dst, int dst_x, int dst_y,
+		      __DRIdrawable *src, unsigned int src_attachment,
+		      int x, int y, int width, int height);
+};
+
+
 /**
  * This extension provides alternative screen, drawable and context
  * constructors for DRI2.

progs/demos/copypix.c

@@ -26,6 +26,7 @@ static int Scissor = 0;
 static float Xzoom, Yzoom;
 static GLboolean DrawFront = GL_FALSE;
 static GLboolean Dither = GL_TRUE;
+static GLboolean Invert = GL_FALSE;
 
 
 static void Reset( void )
@@ -59,6 +60,15 @@ static void Display( void )
    if (Scissor)
       glEnable(GL_SCISSOR_TEST);
 
+   if (Invert) {
+      glPixelTransferf(GL_RED_SCALE, -1.0);
+      glPixelTransferf(GL_GREEN_SCALE, -1.0);
+      glPixelTransferf(GL_BLUE_SCALE, -1.0);
+      glPixelTransferf(GL_RED_BIAS, 1.0);
+      glPixelTransferf(GL_GREEN_BIAS, 1.0);
+      glPixelTransferf(GL_BLUE_BIAS, 1.0);
+   }
+
    /* draw copy */
    glPixelZoom(Xzoom, Yzoom);
    glWindowPos2iARB(Xpos, Ypos);
@@ -67,6 +77,15 @@ static void Display( void )
 
    glDisable(GL_SCISSOR_TEST);
 
+   if (Invert) {
+      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);
+   }
+
    if (DrawFront)
       glFinish();
    else
@@ -105,6 +124,9 @@ static void Key( unsigned char key, int x, int y )
          else
             glDisable(GL_DITHER);
          break;
+      case 'i':
+         Invert = !Invert;
+         break;
       case 's':
          Scissor = !Scissor;
          break;

progs/es1/xegl/Makefile

@@ -0,0 +1,77 @@
+# progs/es1/xegl/Makefile
+
+TOP = ../../..
+include $(TOP)/configs/current
+
+
+INCLUDE_DIRS = \
+	-I$(TOP)/include \
+
+HEADERS = $(TOP)/include/GLES/egl.h
+
+
+ES1_LIB_DEPS = \
+	$(TOP)/$(LIB_DIR)/libEGL.so \
+	$(TOP)/$(LIB_DIR)/libGLESv1_CM.so
+
+
+ES1_LIBS = \
+	-L$(TOP)/$(LIB_DIR) -lEGL \
+	-L$(TOP)/$(LIB_DIR) -lGLESv1_CM $(LIBDRM_LIB) -lX11
+
+PROGRAMS = \
+	drawtex \
+	es1_info \
+	msaa \
+	pbuffer \
+	render_tex \
+	torus \
+	tri \
+	two_win
+
+
+.c.o:
+	$(CC) -c $(INCLUDE_DIRS) $(CFLAGS) $< -o $@
+
+
+
+default: $(PROGRAMS)
+
+
+
+drawtex: drawtex.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) drawtex.o $(ES1_LIBS) -o $@
+
+
+es1_info: es1_info.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) es1_info.o $(ES1_LIBS) -o $@
+
+
+msaa: msaa.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) msaa.o $(ES1_LIBS) -o $@
+
+
+pbuffer: pbuffer.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) pbuffer.o $(ES1_LIBS) -o $@
+
+
+render_tex: render_tex.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) render_tex.o $(ES1_LIBS) -o $@
+
+
+torus: torus.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) torus.o $(ES1_LIBS) -o $@
+
+
+two_win: two_win.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) two_win.o $(ES1_LIBS) -o $@
+
+
+tri: tri.o $(ES1_LIB_DEPS)
+	$(CC) $(CFLAGS) tri.o $(ES1_LIBS) -o $@
+
+
+clean:
+	rm -f *.o *~
+	rm -f $(PROGRAMS)
+

progs/es1/xegl/drawtex.c

@@ -0,0 +1,427 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * Test GL_OES_draw_texture
+ * Brian Paul
+ * August 2008
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+
+static GLfloat view_posx = 10.0, view_posy = 20.0;
+static GLfloat width = 200, height = 200;
+
+
+static void
+draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   glDrawTexfOES(view_posx, view_posy, 0.0, width, height);
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static float
+dist(GLuint i, GLuint j, float x, float y)
+{
+   return sqrt((i-x) * (i-x) + (j-y) * (j-y));
+}
+
+static void
+make_smile_texture(void)
+{
+#define SZ 128
+   GLenum Filter = GL_LINEAR;
+   GLubyte image[SZ][SZ][4];
+   GLuint i, j;
+   GLint cropRect[4];
+
+   for (i = 0; i < SZ; i++) {
+      for (j = 0; j < SZ; j++) {
+         GLfloat d_mouth = dist(i, j, SZ/2, SZ/2);
+         GLfloat d_rt_eye = dist(i, j, SZ*3/4, SZ*3/4);
+         GLfloat d_lt_eye = dist(i, j, SZ*3/4, SZ*1/4);
+         if (d_rt_eye < SZ / 8 || d_lt_eye < SZ / 8) {
+            image[i][j][0] = 20;
+            image[i][j][1] = 50;
+            image[i][j][2] = 255;
+            image[i][j][3] = 255;
+         }
+         else if (i < SZ/2 && d_mouth < SZ/3) {
+            image[i][j][0] = 255;
+            image[i][j][1] = 20;
+            image[i][j][2] = 20;
+            image[i][j][3] = 255;
+         }
+         else {
+            image[i][j][0] = 200;
+            image[i][j][1] = 200;
+            image[i][j][2] = 200;
+            image[i][j][3] = 255;
+         }
+      }
+   }
+
+   glActiveTexture(GL_TEXTURE0); /* unit 0 */
+   glBindTexture(GL_TEXTURE_2D, 42);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   cropRect[0] = 0;
+   cropRect[1] = 0;
+   cropRect[2] = SZ;
+   cropRect[3] = SZ;
+   glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect);
+#undef SZ
+}
+
+
+
+static void
+init(void)
+{
+   const char *ext = (char *) glGetString(GL_EXTENSIONS);
+
+   if (!strstr(ext, "GL_OES_draw_texture")) {
+      fprintf(stderr, "Sorry, this program requires GL_OES_draw_texture");
+      exit(1);
+   }
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+
+   make_smile_texture();
+   glEnable(GL_TEXTURE_2D);
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   eglBindAPI(EGL_OPENGL_ES_API);
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf)
+{
+   int anim = 0;
+
+   while (1) {
+      int redraw = 0;
+
+      if (!anim || XPending(dpy)) {
+         XEvent event;
+         XNextEvent(dpy, &event);
+
+         switch (event.type) {
+         case Expose:
+            redraw = 1;
+            break;
+         case ConfigureNotify:
+            reshape(event.xconfigure.width, event.xconfigure.height);
+            break;
+         case KeyPress:
+            {
+               char buffer[10];
+               int r, code;
+               code = XLookupKeysym(&event.xkey, 0);
+               if (code == XK_Left) {
+               view_posx -= 1.0;
+               }
+               else if (code == XK_Right) {
+                  view_posx += 1.0;
+               }
+               else if (code == XK_Up) {
+                  view_posy += 1.0;
+               }
+               else if (code == XK_Down) {
+                  view_posy -= 1.0;
+               }
+               else {
+                  r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                    NULL, NULL);
+                  if (buffer[0] == ' ') {
+                     anim = !anim;
+                  }
+                  else if (buffer[0] == 'w') {
+                     width -= 1.0f;
+                  }
+                  else if (buffer[0] == 'W') {
+                     width += 1.0f;
+                  }
+                  else if (buffer[0] == 'h') {
+                     height -= 1.0f;
+                  }
+                  else if (buffer[0] == 'H') {
+                     height += 1.0f;
+                  }
+                  else if (buffer[0] == 27) {
+                     /* escape */
+                     return;
+                  }
+               }
+            }
+            redraw = 1;
+            break;
+         default:
+            ; /*no-op*/
+         }
+      }
+
+      if (anim) {
+         view_posx += 1.0;
+         view_posy += 2.0;
+         redraw = 1;
+      }
+
+      if (redraw) {
+         draw();
+         eglSwapBuffers(egl_dpy, egl_surf);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 400, winHeight = 300;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "drawtex", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      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));
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/es1_info.c

@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * List OpenGL ES extensions.
+ * Print ES 1 or ES 2 extensions depending on which library we're
+ * linked with: libGLESv1_CM.so vs libGLESv2.so
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+/*
+ * Print a list of extensions, with word-wrapping.
+ */
+static void
+print_extension_list(const char *ext)
+{
+   const char *indentString = "    ";
+   const int indent = 4;
+   const int max = 79;
+   int width, i, j;
+
+   if (!ext || !ext[0])
+      return;
+
+   width = indent;
+   printf(indentString);
+   i = j = 0;
+   while (1) {
+      if (ext[j] == ' ' || ext[j] == 0) {
+         /* found end of an extension name */
+         const int len = j - i;
+         if (width + len > max) {
+            /* start a new line */
+            printf("\n");
+            width = indent;
+            printf(indentString);
+         }
+         /* print the extension name between ext[i] and ext[j] */
+         while (i < j) {
+            printf("%c", ext[i]);
+            i++;
+         }
+         /* either we're all done, or we'll continue with next extension */
+         width += len + 1;
+         if (ext[j] == 0) {
+            break;
+         }
+         else {
+            i++;
+            j++;
+            if (ext[j] == 0)
+               break;
+            printf(", ");
+            width += 2;
+         }
+      }
+      j++;
+   }
+   printf("\n");
+}
+
+
+static void
+info(EGLDisplay egl_dpy)
+{
+   const char *s;
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   printf("GL_VERSION: %s\n", (char *) glGetString(GL_VERSION));
+   printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
+   printf("GL_EXTENSIONS:\n");
+   print_extension_list((char *) glGetString(GL_EXTENSIONS));
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   eglBindAPI(EGL_OPENGL_ES_API);
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 400, winHeight = 300;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   EGLint egl_major, egl_minor;
+   int i;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   make_x_window(x_dpy, egl_dpy,
+                 "ES info", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   /*XMapWindow(x_dpy, win);*/
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   info(egl_dpy);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/msaa.c

@@ -0,0 +1,442 @@
+/*
+ * Copyright (C) 2008  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.
+ */
+
+/*
+ * Test MSAA with X/EGL and OpenGL ES 1.x
+ * Brian Paul
+ * 15 September 2008
+ */
+
+#define USE_FULL_GL 0
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#if USE_FULL_GL
+#include <GL/gl.h>  /* use full OpenGL */
+#else
+#include <GLES/gl.h>  /* use OpenGL ES 1.x */
+#include <GLES/glext.h>
+#endif
+#include <EGL/egl.h>
+
+
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+static GLboolean AA = 0*GL_TRUE;
+
+
+static void
+draw(void)
+{
+   float a;
+
+   static const GLfloat verts[4][2] = {
+      { -1, -.1 },
+      {  1, -.1 },
+      { -1,  .1 },
+      {  1,  .1 }
+   };
+   static const GLfloat colors[4][4] = {
+      { 1, 0, 0, 1 },
+      { 0, 1, 0, 1 },
+      { 0, 0, 1, 1 },
+      { 1, 0, 1, 1 }
+   };
+
+   if (AA) {
+      printf("MSAA enabled\n");
+      glEnable(GL_MULTISAMPLE);
+   }
+   else {
+      printf("MSAA disabled\n");
+      glDisable(GL_MULTISAMPLE);
+   }
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+
+   {
+      glVertexPointer(2, GL_FLOAT, 0, verts);
+      glColorPointer(4, GL_FLOAT, 0, colors);
+
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_COLOR_ARRAY);
+
+      for (a = 0; a < 360; a += 20.0) {
+         glPushMatrix();
+
+         glRotatef(a, 0, 0, 1);
+         glTranslatef(1.5, 0, 0);
+
+         /* draw triangle */
+         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+         glPopMatrix();
+      }
+
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_COLOR_ARRAY);
+   }
+
+   glPopMatrix();
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ary = 3.0;
+   GLfloat arx = ary * (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+#ifdef GL_VERSION_ES_CM_1_0
+   glOrthof(-arx, arx, -ary, ary, -1.0, 1.0);
+#else
+   glOrtho(-arx, arx, -ary, ary, -1.0, 1.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+}
+
+
+
+static void
+init(void)
+{
+   printf("Press 'a' to toggle multisample antialiasing\n");
+   printf("Press 'Esc' to exit\n");
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_SAMPLES, 1,
+      EGL_SAMPLE_BUFFERS, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   if (num_configs < 1) {
+      printf("Error: Unable to find multisample pixel format.\n");
+      printf("Try running glxinfo to see if your server supports MSAA.\n");
+      exit(1);
+   }
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+#if USE_FULL_GL
+   eglBindAPI(EGL_OPENGL_API);
+#else
+   eglBindAPI(EGL_OPENGL_ES_API);
+#endif
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf)
+{
+   while (1) {
+      int redraw = 0;
+      XEvent event;
+
+      XNextEvent(dpy, &event);
+
+      switch (event.type) {
+      case Expose:
+         redraw = 1;
+         break;
+      case ConfigureNotify:
+         reshape(event.xconfigure.width, event.xconfigure.height);
+         break;
+      case KeyPress:
+         {
+            char buffer[10];
+            int r, code;
+            code = XLookupKeysym(&event.xkey, 0);
+            if (code == XK_Left) {
+               view_roty += 5.0;
+            }
+            else if (code == XK_Right) {
+               view_roty -= 5.0;
+            }
+            else if (code == XK_Up) {
+               view_rotx += 5.0;
+            }
+            else if (code == XK_Down) {
+               view_rotx -= 5.0;
+            }
+            else {
+               r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                 NULL, NULL);
+               if (buffer[0] == 'a') {
+                  AA = !AA;
+                  redraw = 1;
+               }
+               else if (buffer[0] == 27) {
+                  /* escape */
+                  return;
+               }
+            }
+         }
+         redraw = 1;
+         break;
+      default:
+         ; /*no-op*/
+      }
+
+      if (redraw) {
+         draw();
+         eglSwapBuffers(egl_dpy, egl_surf);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 600, winHeight = 600;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   static struct {
+      char *name;
+      GLenum value;
+      enum {GetString, GetInteger} type;
+   } info_items[] = {
+      {"GL_RENDERER", GL_RENDERER, GetString},
+      {"GL_VERSION", GL_VERSION, GetString},
+      {"GL_VENDOR", GL_VENDOR, GetString},
+      {"GL_EXTENSIONS", GL_EXTENSIONS, GetString},
+      {"GL_MAX_PALETTE_MATRICES_OES", GL_MAX_PALETTE_MATRICES_OES, GetInteger},
+      {"GL_MAX_VERTEX_UNITS_OES", GL_MAX_VERTEX_UNITS_OES, GetInteger},
+   };
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "msaa", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      for (i = 0; i < sizeof(info_items)/sizeof(info_items[0]); i++) {
+         switch (info_items[i].type) {
+            case GetString:
+               printf("%s = %s\n", info_items[i].name, (char *)glGetString(info_items[i].value));
+               break;
+            case GetInteger: {
+               GLint rv = -1;
+               glGetIntegerv(info_items[i].value, &rv);
+               printf("%s = %d\n", info_items[i].name, rv);
+               break;
+            }
+         }
+      }
+   };
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/pbuffer.c

@@ -0,0 +1,607 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * Test EGL Pbuffers
+ * Brian Paul
+ * August 2008
+ */
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+
+static int WinWidth = 300, WinHeight = 300;
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+
+
+static void
+Normal(GLfloat *n, GLfloat nx, GLfloat ny, GLfloat nz)
+{
+   n[0] = nx;
+   n[1] = ny;
+   n[2] = nz;
+}
+
+static void
+Vertex(GLfloat *v, GLfloat vx, GLfloat vy, GLfloat vz)
+{
+   v[0] = vx;
+   v[1] = vy;
+   v[2] = vz;
+}
+
+static void
+Texcoord(GLfloat *v, GLfloat s, GLfloat t)
+{
+   v[0] = s;
+   v[1] = t;
+}
+
+
+/* Borrowed from glut, adapted */
+static void
+draw_torus(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+   int i, j;
+   GLfloat theta, phi, theta1;
+   GLfloat cosTheta, sinTheta;
+   GLfloat cosTheta1, sinTheta1;
+   GLfloat ringDelta, sideDelta;
+   GLfloat varray[100][3], narray[100][3], tarray[100][2];
+   int vcount;
+
+   glVertexPointer(3, GL_FLOAT, 0, varray);
+   glNormalPointer(GL_FLOAT, 0, narray);
+   glTexCoordPointer(2, GL_FLOAT, 0, tarray);
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_NORMAL_ARRAY);
+   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+   
+   ringDelta = 2.0 * M_PI / rings;
+   sideDelta = 2.0 * M_PI / nsides;
+
+   theta = 0.0;
+   cosTheta = 1.0;
+   sinTheta = 0.0;
+   for (i = rings - 1; i >= 0; i--) {
+      theta1 = theta + ringDelta;
+      cosTheta1 = cos(theta1);
+      sinTheta1 = sin(theta1);
+
+      vcount = 0; /* glBegin(GL_QUAD_STRIP); */
+
+      phi = 0.0;
+      for (j = nsides; j >= 0; j--) {
+         GLfloat s0, s1, t;
+         GLfloat cosPhi, sinPhi, dist;
+
+         phi += sideDelta;
+         cosPhi = cos(phi);
+         sinPhi = sin(phi);
+         dist = R + r * cosPhi;
+
+         s0 = 20.0 * theta / (2.0 * M_PI);
+         s1 = 20.0 * theta1 / (2.0 * M_PI);
+         t = 8.0 * phi / (2.0 * M_PI);
+
+         Normal(narray[vcount], cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s1, t);
+         Vertex(varray[vcount], cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+         vcount++;
+
+         Normal(narray[vcount], cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s0, t);
+         Vertex(varray[vcount], cosTheta * dist, -sinTheta * dist,  r * sinPhi);
+         vcount++;
+      }
+
+      /*glEnd();*/
+      assert(vcount <= 100);
+      glDrawArrays(GL_TRIANGLE_STRIP, 0, vcount);
+
+      theta = theta1;
+      cosTheta = cosTheta1;
+      sinTheta = sinTheta1;
+   }
+
+   glDisableClientState(GL_VERTEX_ARRAY);
+   glDisableClientState(GL_NORMAL_ARRAY);
+   glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+
+static void
+draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+   glScalef(0.5, 0.5, 0.5);
+
+   draw_torus(1.0, 3.0, 30, 60);
+
+   glPopMatrix();
+
+   glFinish();
+}
+
+
+/**
+ * Draw to both the window and pbuffer and compare results.
+ */
+static void
+draw_both(EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
+          EGLContext egl_ctx)
+{
+   unsigned *wbuf, *pbuf;
+   int x = 100, y = 110;
+   int i, dif;
+
+   wbuf = (unsigned *) malloc(WinWidth * WinHeight * 4);
+   pbuf = (unsigned *) malloc(WinWidth * WinHeight * 4);
+
+   glPixelStorei(GL_PACK_ALIGNMENT, 1);
+
+   /* first draw to window */
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent(window) failed\n");
+      return;
+   }
+   draw();
+   glReadPixels(0, 0, WinWidth, WinHeight, GL_RGBA, GL_UNSIGNED_BYTE, wbuf);
+   printf("Window[%d,%d] = 0x%08x\n", x, y, wbuf[y*WinWidth+x]);
+
+   /* then draw to pbuffer */
+   if (!eglMakeCurrent(egl_dpy, egl_pbuf, egl_pbuf, egl_ctx)) {
+      printf("Error: eglMakeCurrent(pbuffer) failed\n");
+      return;
+   }
+   draw();
+   glReadPixels(0, 0, WinWidth, WinHeight, GL_RGBA, GL_UNSIGNED_BYTE, pbuf);
+   printf("Pbuffer[%d,%d] = 0x%08x\n", x, y, pbuf[y*WinWidth+x]);
+
+   eglSwapBuffers(egl_dpy, egl_surf);
+
+   /* compare renderings */
+   for (dif = i = 0; i < WinWidth * WinHeight; i++) {
+      if (wbuf[i] != pbuf[i]) {
+         dif = 1;
+         break;
+      }
+   }
+
+   if (dif)
+      printf("Difference at %d: 0x%08x vs. 0x%08x\n", i, wbuf[i], pbuf[i]);
+   else
+      printf("Window rendering matches Pbuffer rendering!\n");
+
+   free(wbuf);
+   free(pbuf);
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   WinWidth = width;
+   WinHeight = height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static void
+make_texture(void)
+{
+#define SZ 64
+   GLenum Filter = GL_LINEAR;
+   GLubyte image[SZ][SZ][4];
+   GLuint i, j;
+
+   for (i = 0; i < SZ; i++) {
+      for (j = 0; j < SZ; j++) {
+         GLfloat d = (i - SZ/2) * (i - SZ/2) + (j - SZ/2) * (j - SZ/2);
+         d = sqrt(d);
+         if (d < SZ/3) {
+            image[i][j][0] = 255;
+            image[i][j][1] = 255;
+            image[i][j][2] = 255;
+            image[i][j][3] = 255;
+         }
+         else {
+            image[i][j][0] = 127;
+            image[i][j][1] = 127;
+            image[i][j][2] = 127;
+            image[i][j][3] = 255;
+         }
+      }
+   }
+
+   glActiveTexture(GL_TEXTURE0); /* unit 0 */
+   glBindTexture(GL_TEXTURE_2D, 42);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+#undef SZ
+}
+
+
+
+static void
+init(void)
+{
+   static const GLfloat red[4] = {1, 0, 0, 0};
+   static const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
+   static const GLfloat diffuse[4] = {0.7, 0.7, 0.7, 1.0};
+   static const GLfloat specular[4] = {0.001, 0.001, 0.001, 1.0};
+   static const GLfloat pos[4] = {20, 20, 50, 1};
+
+   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
+   glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 9.0);
+
+   glEnable(GL_LIGHTING);
+   glEnable(GL_LIGHT0);
+   glLightfv(GL_LIGHT0, GL_POSITION, pos);
+   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
+   glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+   glEnable(GL_DEPTH_TEST);
+
+   make_texture();
+   glEnable(GL_TEXTURE_2D);
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   eglBindAPI(EGL_OPENGL_ES_API);
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static EGLSurface
+make_pbuffer(Display *x_dpy, EGLDisplay egl_dpy, int width, int height)
+{
+   static const EGLint config_attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+   EGLConfig config;
+   EGLSurface pbuf;
+   EGLint num_configs;
+   EGLint pbuf_attribs[5];
+
+   pbuf_attribs[0] = EGL_WIDTH;
+   pbuf_attribs[1] = width;
+   pbuf_attribs[2] = EGL_HEIGHT;
+   pbuf_attribs[3] = height;
+   pbuf_attribs[4] = EGL_NONE;
+
+   if (!eglChooseConfig( egl_dpy, config_attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL config for pbuffer\n");
+      exit(1);
+   }
+
+   pbuf = eglCreatePbufferSurface(egl_dpy, config, pbuf_attribs);
+
+   return pbuf;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
+           EGLContext egl_ctx)
+{
+   int anim = 0;
+
+   while (1) {
+      int redraw = 0;
+
+      if (!anim || XPending(dpy)) {
+         XEvent event;
+         XNextEvent(dpy, &event);
+
+         switch (event.type) {
+         case Expose:
+            redraw = 1;
+            break;
+         case ConfigureNotify:
+            if (event.xconfigure.window == win)
+               reshape(event.xconfigure.width, event.xconfigure.height);
+            break;
+         case KeyPress:
+            {
+               char buffer[10];
+               int r, code;
+               code = XLookupKeysym(&event.xkey, 0);
+               if (code == XK_Left) {
+               view_roty += 5.0;
+               }
+               else if (code == XK_Right) {
+                  view_roty -= 5.0;
+               }
+               else if (code == XK_Up) {
+                  view_rotx += 5.0;
+               }
+               else if (code == XK_Down) {
+                  view_rotx -= 5.0;
+               }
+               else {
+                  r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                    NULL, NULL);
+                  if (buffer[0] == ' ') {
+                     anim = !anim;
+                  }
+                  else if (buffer[0] == 27) {
+                     /* escape */
+                     return;
+                  }
+               }
+            }
+            redraw = 1;
+            break;
+         default:
+            ; /*no-op*/
+         }
+      }
+
+      if (anim) {
+         view_rotx += 1.0;
+         view_roty += 2.0;
+         redraw = 1;
+      }
+
+      if (redraw) {
+         draw_both(egl_dpy, egl_surf, egl_pbuf, egl_ctx);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf, egl_pbuf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "pbuffer", 0, 0, WinWidth, WinHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   egl_pbuf = make_pbuffer(x_dpy, egl_dpy, WinWidth, WinHeight);
+   if (!egl_pbuf) {
+      printf("Error: eglCreatePBufferSurface() failed\n");
+      return -1;
+   }
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      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));
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(WinWidth, WinHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf, egl_pbuf, egl_ctx);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/render_tex.c

@@ -0,0 +1,657 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * Test EGL render to texture.
+ * Brian Paul
+ * August 2008
+ */
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+static int TexWidth = 256, TexHeight = 256;
+
+static int WinWidth = 300, WinHeight = 300;
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+
+static GLuint DotTexture, RenderTexture;
+
+
+static void
+Normal(GLfloat *n, GLfloat nx, GLfloat ny, GLfloat nz)
+{
+   n[0] = nx;
+   n[1] = ny;
+   n[2] = nz;
+}
+
+static void
+Vertex(GLfloat *v, GLfloat vx, GLfloat vy, GLfloat vz)
+{
+   v[0] = vx;
+   v[1] = vy;
+   v[2] = vz;
+}
+
+static void
+Texcoord(GLfloat *v, GLfloat s, GLfloat t)
+{
+   v[0] = s;
+   v[1] = t;
+}
+
+
+/* Borrowed from glut, adapted */
+static void
+draw_torus(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+   int i, j;
+   GLfloat theta, phi, theta1;
+   GLfloat cosTheta, sinTheta;
+   GLfloat cosTheta1, sinTheta1;
+   GLfloat ringDelta, sideDelta;
+   GLfloat varray[100][3], narray[100][3], tarray[100][2];
+   int vcount;
+
+   glVertexPointer(3, GL_FLOAT, 0, varray);
+   glNormalPointer(GL_FLOAT, 0, narray);
+   glTexCoordPointer(2, GL_FLOAT, 0, tarray);
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_NORMAL_ARRAY);
+   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+   
+   ringDelta = 2.0 * M_PI / rings;
+   sideDelta = 2.0 * M_PI / nsides;
+
+   theta = 0.0;
+   cosTheta = 1.0;
+   sinTheta = 0.0;
+   for (i = rings - 1; i >= 0; i--) {
+      theta1 = theta + ringDelta;
+      cosTheta1 = cos(theta1);
+      sinTheta1 = sin(theta1);
+
+      vcount = 0; /* glBegin(GL_QUAD_STRIP); */
+
+      phi = 0.0;
+      for (j = nsides; j >= 0; j--) {
+         GLfloat s0, s1, t;
+         GLfloat cosPhi, sinPhi, dist;
+
+         phi += sideDelta;
+         cosPhi = cos(phi);
+         sinPhi = sin(phi);
+         dist = R + r * cosPhi;
+
+         s0 = 20.0 * theta / (2.0 * M_PI);
+         s1 = 20.0 * theta1 / (2.0 * M_PI);
+         t = 8.0 * phi / (2.0 * M_PI);
+
+         Normal(narray[vcount], cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s1, t);
+         Vertex(varray[vcount], cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+         vcount++;
+
+         Normal(narray[vcount], cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s0, t);
+         Vertex(varray[vcount], cosTheta * dist, -sinTheta * dist,  r * sinPhi);
+         vcount++;
+      }
+
+      /*glEnd();*/
+      assert(vcount <= 100);
+      glDrawArrays(GL_TRIANGLE_STRIP, 0, vcount);
+
+      theta = theta1;
+      cosTheta = cosTheta1;
+      sinTheta = sinTheta1;
+   }
+
+   glDisableClientState(GL_VERTEX_ARRAY);
+   glDisableClientState(GL_NORMAL_ARRAY);
+   glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+
+static void
+draw_torus_to_texture(void)
+{
+   glViewport(0, 0, TexWidth, TexHeight);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustumf(-1, 1, -1, 1, 5.0, 60.0);
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glBindTexture(GL_TEXTURE_2D, DotTexture);
+
+   glEnable(GL_LIGHTING);
+
+   glPushMatrix();
+   glRotatef(view_roty, 0, 1, 0);
+   glScalef(0.5, 0.5, 0.5);
+
+   draw_torus(1.0, 3.0, 30, 60);
+
+   glPopMatrix();
+
+   glDisable(GL_LIGHTING);
+
+#if 0
+   glBindTexture(GL_TEXTURE_2D, RenderTexture);
+   glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, TexWidth, TexHeight);
+#endif
+
+   glFinish();
+}
+
+
+static void
+draw_textured_quad(void)
+{
+   GLfloat ar = (GLfloat) WinWidth / (GLfloat) WinHeight;
+
+   glViewport(0, 0, WinWidth, WinHeight);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -8.0);
+
+   glClearColor(0.4, 0.4, 1.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glBindTexture(GL_TEXTURE_2D, RenderTexture);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+
+   {
+      static const GLfloat texcoord[4][2] = {
+         { 0, 0 },  { 1, 0 },  { 0, 1 },  { 1, 1 }
+      };
+      static const GLfloat vertex[4][2] = {
+         { -1, -1 },  {  1, -1 },  { -1,  1 },  {  1,  1 }
+      };
+
+      glVertexPointer(2, GL_FLOAT, 0, vertex);
+      glTexCoordPointer(2, GL_FLOAT, 0, texcoord);
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+  
+      glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+
+   glPopMatrix();
+}
+
+
+
+static void
+draw(EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
+     EGLContext egl_ctx)
+{
+   /*printf("Begin draw\n");*/
+
+   /* first draw torus to pbuffer /texture */
+#if 01
+   if (!eglMakeCurrent(egl_dpy, egl_pbuf, egl_pbuf, egl_ctx)) {
+#else
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+#endif
+      printf("Error: eglMakeCurrent(pbuf) failed\n");
+      return;
+   }
+   glBindTexture(GL_TEXTURE_2D, RenderTexture);
+   eglBindTexImage(egl_dpy, egl_pbuf, EGL_BACK_BUFFER);
+   draw_torus_to_texture();
+   eglReleaseTexImage(egl_dpy, egl_pbuf, EGL_BACK_BUFFER);
+
+   /* draw textured quad to window */
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent(pbuffer) failed\n");
+      return;
+   }
+   draw_textured_quad();
+   eglSwapBuffers(egl_dpy, egl_surf);
+
+   /*printf("End draw\n");*/
+}
+
+
+
+static void
+make_dot_texture(void)
+{
+#define SZ 64
+   GLenum Filter = GL_LINEAR;
+   GLubyte image[SZ][SZ][4];
+   GLuint i, j;
+
+   for (i = 0; i < SZ; i++) {
+      for (j = 0; j < SZ; j++) {
+         GLfloat d = (i - SZ/2) * (i - SZ/2) + (j - SZ/2) * (j - SZ/2);
+         d = sqrt(d);
+         if (d < SZ/3) {
+            image[i][j][0] = 255;
+            image[i][j][1] = 255;
+            image[i][j][2] = 255;
+            image[i][j][3] = 255;
+         }
+         else {
+            image[i][j][0] = 127;
+            image[i][j][1] = 127;
+            image[i][j][2] = 127;
+            image[i][j][3] = 255;
+         }
+      }
+   }
+
+   glGenTextures(1, &DotTexture);
+   glBindTexture(GL_TEXTURE_2D, DotTexture);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+#undef SZ
+}
+
+
+static void
+make_render_texture(void)
+{
+   GLenum Filter = GL_LINEAR;
+   glGenTextures(1, &RenderTexture);
+   glBindTexture(GL_TEXTURE_2D, RenderTexture);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TexWidth, TexHeight, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+}
+
+
+static void
+init(void)
+{
+   static const GLfloat red[4] = {1, 0, 0, 0};
+   static const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
+   static const GLfloat diffuse[4] = {0.7, 0.7, 0.7, 1.0};
+   static const GLfloat specular[4] = {0.001, 0.001, 0.001, 1.0};
+   static const GLfloat pos[4] = {20, 20, 50, 1};
+
+   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
+   glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 9.0);
+
+   glEnable(GL_LIGHT0);
+   glLightfv(GL_LIGHT0, GL_POSITION, pos);
+   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
+   glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
+
+   glEnable(GL_DEPTH_TEST);
+
+   make_dot_texture();
+   make_render_texture();
+
+   printf("DotTexture=%u RenderTexture=%u\n", DotTexture, RenderTexture);
+
+   glEnable(GL_TEXTURE_2D);
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   eglBindAPI(EGL_OPENGL_ES_API);
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static EGLSurface
+make_pbuffer(Display *x_dpy, EGLDisplay egl_dpy, int width, int height)
+{
+   static const EGLint config_attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+   EGLConfig config;
+   EGLSurface pbuf;
+   EGLint num_configs;
+   EGLint pbuf_attribs[15];
+   int i = 0;
+
+   pbuf_attribs[i++] = EGL_WIDTH;
+   pbuf_attribs[i++] = width;
+   pbuf_attribs[i++] = EGL_HEIGHT;
+   pbuf_attribs[i++] = height;
+   pbuf_attribs[i++] = EGL_TEXTURE_FORMAT;
+   pbuf_attribs[i++] = EGL_TEXTURE_RGBA;
+   pbuf_attribs[i++] = EGL_TEXTURE_TARGET;
+   pbuf_attribs[i++] = EGL_TEXTURE_2D;
+   pbuf_attribs[i++] = EGL_MIPMAP_TEXTURE;
+   pbuf_attribs[i++] = EGL_FALSE;
+   pbuf_attribs[i++] = EGL_NONE;
+   assert(i <= 15);
+
+   if (!eglChooseConfig( egl_dpy, config_attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL config for pbuffer\n");
+      exit(1);
+   }
+
+   pbuf = eglCreatePbufferSurface(egl_dpy, config, pbuf_attribs);
+
+   return pbuf;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
+           EGLContext egl_ctx)
+{
+   int anim = 0;
+
+   while (1) {
+      int redraw = 0;
+
+      if (!anim || XPending(dpy)) {
+         XEvent event;
+         XNextEvent(dpy, &event);
+
+         switch (event.type) {
+         case Expose:
+            redraw = 1;
+            break;
+         case ConfigureNotify:
+            if (event.xconfigure.window == win) {
+               WinWidth = event.xconfigure.width;
+               WinHeight = event.xconfigure.height;
+            }
+            break;
+         case KeyPress:
+            {
+               char buffer[10];
+               int r, code;
+               code = XLookupKeysym(&event.xkey, 0);
+               if (code == XK_Left) {
+               view_roty += 5.0;
+               }
+               else if (code == XK_Right) {
+                  view_roty -= 5.0;
+               }
+               else if (code == XK_Up) {
+                  view_rotx += 5.0;
+               }
+               else if (code == XK_Down) {
+                  view_rotx -= 5.0;
+               }
+               else {
+                  r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                    NULL, NULL);
+                  if (buffer[0] == ' ') {
+                     anim = !anim;
+                  }
+                  else if (buffer[0] == 'z') {
+                     view_rotz += 5.0;
+                  }
+                  else if (buffer[0] == 'Z') {
+                     view_rotz -= 5.0;
+                  }
+                  else if (buffer[0] == 27) {
+                     /* escape */
+                     return;
+                  }
+               }
+            }
+            redraw = 1;
+            break;
+         default:
+            ; /*no-op*/
+         }
+      }
+
+      if (anim) {
+         view_rotx += 1.0;
+         view_roty += 2.0;
+         redraw = 1;
+      }
+
+      if (redraw) {
+         draw(egl_dpy, egl_surf, egl_pbuf, egl_ctx);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf, egl_pbuf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "render_tex", 0, 0, WinWidth, WinHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   egl_pbuf = make_pbuffer(x_dpy, egl_dpy, TexWidth, TexHeight);
+   if (!egl_pbuf) {
+      printf("Error: eglCreatePBufferSurface() failed\n");
+      return -1;
+   }
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      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));
+   }
+
+   init();
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf, egl_pbuf, egl_ctx);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/torus.c

@@ -0,0 +1,509 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * Draw a lit, textured torus with X/EGL and OpenGL ES 1.x
+ * Brian Paul
+ * July 2008
+ */
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+
+
+static void
+Normal(GLfloat *n, GLfloat nx, GLfloat ny, GLfloat nz)
+{
+   n[0] = nx;
+   n[1] = ny;
+   n[2] = nz;
+}
+
+static void
+Vertex(GLfloat *v, GLfloat vx, GLfloat vy, GLfloat vz)
+{
+   v[0] = vx;
+   v[1] = vy;
+   v[2] = vz;
+}
+
+static void
+Texcoord(GLfloat *v, GLfloat s, GLfloat t)
+{
+   v[0] = s;
+   v[1] = t;
+}
+
+
+/* Borrowed from glut, adapted */
+static void
+draw_torus(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+   int i, j;
+   GLfloat theta, phi, theta1;
+   GLfloat cosTheta, sinTheta;
+   GLfloat cosTheta1, sinTheta1;
+   GLfloat ringDelta, sideDelta;
+   GLfloat varray[100][3], narray[100][3], tarray[100][2];
+   int vcount;
+
+   glVertexPointer(3, GL_FLOAT, 0, varray);
+   glNormalPointer(GL_FLOAT, 0, narray);
+   glTexCoordPointer(2, GL_FLOAT, 0, tarray);
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_NORMAL_ARRAY);
+   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+   
+   ringDelta = 2.0 * M_PI / rings;
+   sideDelta = 2.0 * M_PI / nsides;
+
+   theta = 0.0;
+   cosTheta = 1.0;
+   sinTheta = 0.0;
+   for (i = rings - 1; i >= 0; i--) {
+      theta1 = theta + ringDelta;
+      cosTheta1 = cos(theta1);
+      sinTheta1 = sin(theta1);
+
+      vcount = 0; /* glBegin(GL_QUAD_STRIP); */
+
+      phi = 0.0;
+      for (j = nsides; j >= 0; j--) {
+         GLfloat s0, s1, t;
+         GLfloat cosPhi, sinPhi, dist;
+
+         phi += sideDelta;
+         cosPhi = cos(phi);
+         sinPhi = sin(phi);
+         dist = R + r * cosPhi;
+
+         s0 = 20.0 * theta / (2.0 * M_PI);
+         s1 = 20.0 * theta1 / (2.0 * M_PI);
+         t = 8.0 * phi / (2.0 * M_PI);
+
+         Normal(narray[vcount], cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s1, t);
+         Vertex(varray[vcount], cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+         vcount++;
+
+         Normal(narray[vcount], cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+         Texcoord(tarray[vcount], s0, t);
+         Vertex(varray[vcount], cosTheta * dist, -sinTheta * dist,  r * sinPhi);
+         vcount++;
+      }
+
+      /*glEnd();*/
+      assert(vcount <= 100);
+      glDrawArrays(GL_TRIANGLE_STRIP, 0, vcount);
+
+      theta = theta1;
+      cosTheta = cosTheta1;
+      sinTheta = sinTheta1;
+   }
+
+   glDisableClientState(GL_VERTEX_ARRAY);
+   glDisableClientState(GL_NORMAL_ARRAY);
+   glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+
+static void
+draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+   glScalef(0.5, 0.5, 0.5);
+
+   draw_torus(1.0, 3.0, 30, 60);
+
+   glPopMatrix();
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static void
+make_texture(void)
+{
+#define SZ 64
+   GLenum Filter = GL_LINEAR;
+   GLubyte image[SZ][SZ][4];
+   GLuint i, j;
+
+   for (i = 0; i < SZ; i++) {
+      for (j = 0; j < SZ; j++) {
+         GLfloat d = (i - SZ/2) * (i - SZ/2) + (j - SZ/2) * (j - SZ/2);
+         d = sqrt(d);
+         if (d < SZ/3) {
+            image[i][j][0] = 255;
+            image[i][j][1] = 255;
+            image[i][j][2] = 255;
+            image[i][j][3] = 255;
+         }
+         else {
+            image[i][j][0] = 127;
+            image[i][j][1] = 127;
+            image[i][j][2] = 127;
+            image[i][j][3] = 255;
+         }
+      }
+   }
+
+   glActiveTexture(GL_TEXTURE0); /* unit 0 */
+   glBindTexture(GL_TEXTURE_2D, 42);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+#undef SZ
+}
+
+
+
+static void
+init(void)
+{
+   static const GLfloat red[4] = {1, 0, 0, 0};
+   static const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
+   static const GLfloat diffuse[4] = {0.7, 0.7, 0.7, 1.0};
+   static const GLfloat specular[4] = {0.001, 0.001, 0.001, 1.0};
+   static const GLfloat pos[4] = {20, 20, 50, 1};
+
+   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
+   glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 9.0);
+
+   glEnable(GL_LIGHTING);
+   glEnable(GL_LIGHT0);
+   glLightfv(GL_LIGHT0, GL_POSITION, pos);
+   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
+   glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+   glEnable(GL_DEPTH_TEST);
+
+   make_texture();
+   glEnable(GL_TEXTURE_2D);
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   eglBindAPI(EGL_OPENGL_ES_API);
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf)
+{
+   int anim = 1;
+
+   while (1) {
+      int redraw = 0;
+
+      if (!anim || XPending(dpy)) {
+         XEvent event;
+         XNextEvent(dpy, &event);
+
+         switch (event.type) {
+         case Expose:
+            redraw = 1;
+            break;
+         case ConfigureNotify:
+            reshape(event.xconfigure.width, event.xconfigure.height);
+            break;
+         case KeyPress:
+            {
+               char buffer[10];
+               int r, code;
+               code = XLookupKeysym(&event.xkey, 0);
+               if (code == XK_Left) {
+               view_roty += 5.0;
+               }
+               else if (code == XK_Right) {
+                  view_roty -= 5.0;
+               }
+               else if (code == XK_Up) {
+                  view_rotx += 5.0;
+               }
+               else if (code == XK_Down) {
+                  view_rotx -= 5.0;
+               }
+               else {
+                  r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                    NULL, NULL);
+                  if (buffer[0] == ' ') {
+                     anim = !anim;
+                  }
+                  else if (buffer[0] == 27) {
+                     /* escape */
+                     return;
+                  }
+               }
+            }
+            redraw = 1;
+            break;
+         default:
+            ; /*no-op*/
+         }
+      }
+
+      if (anim) {
+         view_rotx += 1.0;
+         view_roty += 2.0;
+         redraw = 1;
+      }
+
+      if (redraw) {
+         draw();
+         eglSwapBuffers(egl_dpy, egl_surf);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 300, winHeight = 300;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "torus", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      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));
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/tri.c

@@ -0,0 +1,473 @@
+/*
+ * Copyright (C) 2008  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.
+ */
+
+/*
+ * Draw a triangle with X/EGL and OpenGL ES 1.x
+ * Brian Paul
+ * 5 June 2008
+ */
+
+#define USE_FULL_GL 0
+
+#define USE_FIXED_POINT 0
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#if USE_FULL_GL
+#include <GL/gl.h>  /* use full OpenGL */
+#else
+#include <GLES/gl.h>  /* use OpenGL ES 1.x */
+#include <GLES/glext.h>
+#endif
+#include <EGL/egl.h>
+
+
+#define FLOAT_TO_FIXED(X)   ((X) * 65535.0)
+
+
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+
+
+static void
+draw(void)
+{
+#if USE_FIXED_POINT
+   static const GLfixed verts[3][2] = {
+      { -65536, -65536 },
+      {  65536, -65536 },
+      {      0,  65536 }
+   };
+   static const GLfixed colors[3][4] = {
+      { 65536,     0,     0,    65536 },
+      {     0, 65536,     0 ,   65536},
+      {     0,     0, 65536 ,   65536}
+   };
+#else
+   static const GLfloat verts[3][2] = {
+      { -1, -1 },
+      {  1, -1 },
+      {  0,  1 }
+   };
+   static const GLfloat colors[3][4] = {
+      { 1, 0, 0, 1 },
+      { 0, 1, 0, 1 },
+      { 0, 0, 1, 1 }
+   };
+#endif
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+
+   {
+#if USE_FIXED_POINT
+      glVertexPointer(2, GL_FIXED, 0, verts);
+      glColorPointer(4, GL_FIXED, 0, colors);
+#else
+      glVertexPointer(2, GL_FLOAT, 0, verts);
+      glColorPointer(4, GL_FLOAT, 0, colors);
+#endif
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_COLOR_ARRAY);
+
+      /* draw triangle */
+      glDrawArrays(GL_TRIANGLES, 0, 3);
+
+      /* draw some points */
+      glPointSizex(FLOAT_TO_FIXED(15.5));
+      glDrawArrays(GL_POINTS, 0, 3);
+
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_COLOR_ARRAY);
+   }
+
+   if (0) {
+      /* test code */
+      GLfixed size;
+      glGetFixedv(GL_POINT_SIZE, &size);
+      printf("GL_POINT_SIZE = 0x%x %f\n", size, size / 65536.0);
+   }
+
+   glPopMatrix();
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -10.0);
+}
+
+
+static void
+test_query_matrix(void)
+{
+   PFNGLQUERYMATRIXXOESPROC procQueryMatrixx;
+   typedef void (*voidproc)();
+   GLfixed mantissa[16];
+   GLint exponent[16];
+   GLbitfield rv;
+   int i;
+   voidproc p = eglGetProcAddress("eglCreateContext");
+
+   assert(p);
+   procQueryMatrixx = (PFNGLQUERYMATRIXXOESPROC) eglGetProcAddress("glQueryMatrixxOES");
+   assert(procQueryMatrixx);
+   /* Actually try out this one */
+   rv = (*procQueryMatrixx)(mantissa, exponent);
+   for (i = 0; i < 16; i++) {
+      if (rv & (1<<i)) {
+        printf("matrix[%d] invalid\n", i);
+      }
+      else {
+         printf("matrix[%d] = %f * 2^(%d)\n", i, mantissa[i]/65536.0, exponent[i]);
+      }
+   }
+   p = eglGetProcAddress("glFoo");
+   assert(!p);
+}
+
+
+static void
+init(void)
+{
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+
+   if (0)
+      test_query_matrix();
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+#if USE_FULL_GL
+   eglBindAPI(EGL_OPENGL_API);
+#else
+   eglBindAPI(EGL_OPENGL_ES_API);
+#endif
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf)
+{
+   while (1) {
+      int redraw = 0;
+      XEvent event;
+
+      XNextEvent(dpy, &event);
+
+      switch (event.type) {
+      case Expose:
+         redraw = 1;
+         break;
+      case ConfigureNotify:
+         reshape(event.xconfigure.width, event.xconfigure.height);
+         break;
+      case KeyPress:
+         {
+            char buffer[10];
+            int r, code;
+            code = XLookupKeysym(&event.xkey, 0);
+            if (code == XK_Left) {
+               view_roty += 5.0;
+            }
+            else if (code == XK_Right) {
+               view_roty -= 5.0;
+            }
+            else if (code == XK_Up) {
+               view_rotx += 5.0;
+            }
+            else if (code == XK_Down) {
+               view_rotx -= 5.0;
+            }
+            else {
+               r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                 NULL, NULL);
+               if (buffer[0] == 27) {
+                  /* escape */
+                  return;
+               }
+            }
+         }
+         redraw = 1;
+         break;
+      default:
+         ; /*no-op*/
+      }
+
+      if (redraw) {
+         draw();
+         eglSwapBuffers(egl_dpy, egl_surf);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 300, winHeight = 300;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   static struct {
+      char *name;
+      GLenum value;
+      enum {GetString, GetInteger} type;
+   } info_items[] = {
+      {"GL_RENDERER", GL_RENDERER, GetString},
+      {"GL_VERSION", GL_VERSION, GetString},
+      {"GL_VENDOR", GL_VENDOR, GetString},
+      {"GL_EXTENSIONS", GL_EXTENSIONS, GetString},
+      {"GL_MAX_PALETTE_MATRICES_OES", GL_MAX_PALETTE_MATRICES_OES, GetInteger},
+      {"GL_MAX_VERTEX_UNITS_OES", GL_MAX_VERTEX_UNITS_OES, GetInteger},
+   };
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "OpenGL ES 1.x tri", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      for (i = 0; i < sizeof(info_items)/sizeof(info_items[0]); i++) {
+         switch (info_items[i].type) {
+            case GetString:
+               printf("%s = %s\n", info_items[i].name, (char *)glGetString(info_items[i].value));
+               break;
+            case GetInteger: {
+               GLint rv = -1;
+               glGetIntegerv(info_items[i].value, &rv);
+               printf("%s = %d\n", info_items[i].name, rv);
+               break;
+            }
+         }
+      }
+   };
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es1/xegl/two_win.c

@@ -0,0 +1,433 @@
+/*
+ * Copyright (C) 2008  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.
+ */
+
+/*
+ * Test drawing to two windows.
+ * Brian Paul
+ * August 2008
+ */
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+static int WinWidth[2] = {150, 300}, WinHeight[2] = {150, 300};
+
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -10.0);
+}
+
+
+static void
+draw(int win)
+{
+   static const GLfloat verts[3][2] = {
+      { -1, -1 },
+      {  1, -1 },
+      {  0,  1 }
+   };
+   static const GLfloat colors[3][4] = {
+      { 1, 0, 0, 1 },
+      { 0, 1, 0, 1 },
+      { 0, 0, 1, 1 }
+   };
+
+   assert(win == 0 || win == 1);
+
+   reshape(WinWidth[win], WinHeight[win]);
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+
+   /* draw triangle */
+   {
+      glVertexPointer(2, GL_FLOAT, 0, verts);
+      glColorPointer(4, GL_FLOAT, 0, colors);
+
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_COLOR_ARRAY);
+
+      glDrawArrays(GL_TRIANGLES, 0, 3);
+
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_COLOR_ARRAY);
+   }
+
+   glPopMatrix();
+}
+
+
+static void
+init(void)
+{
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, x, y, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+#if USE_FULL_GL
+   eglBindAPI(EGL_OPENGL_API);
+#else
+   eglBindAPI(EGL_OPENGL_ES_API);
+#endif
+
+   if (ctxRet) {
+      ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL );
+      if (!ctx) {
+         printf("Error: eglCreateContext failed\n");
+         exit(1);
+      }
+      *ctxRet = ctx;
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+}
+
+
+static void
+event_loop(Display *dpy, Window win1, Window win2,
+           EGLDisplay egl_dpy, EGLSurface egl_surf1, EGLSurface egl_surf2,
+           EGLContext egl_ctx)
+{
+   while (1) {
+      int redraw = 0;
+      int win;
+      XEvent event;
+
+      XNextEvent(dpy, &event);
+
+      switch (event.type) {
+      case Expose:
+         redraw = 1;
+         break;
+      case ConfigureNotify:
+         if (event.xconfigure.window == win1)
+            win = 0;
+         else
+            win = 1;
+         WinWidth[win] = event.xconfigure.width;
+         WinHeight[win] = event.xconfigure.height;
+         break;
+      case KeyPress:
+         {
+            char buffer[10];
+            int r, code;
+            code = XLookupKeysym(&event.xkey, 0);
+            if (code == XK_Left) {
+               view_roty += 5.0;
+            }
+            else if (code == XK_Right) {
+               view_roty -= 5.0;
+            }
+            else if (code == XK_Up) {
+               view_rotx += 5.0;
+            }
+            else if (code == XK_Down) {
+               view_rotx -= 5.0;
+            }
+            else {
+               r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                 NULL, NULL);
+               if (buffer[0] == 27) {
+                  /* escape */
+                  return;
+               }
+            }
+         }
+         redraw = 1;
+         break;
+      default:
+         ; /*no-op*/
+      }
+
+      if (redraw) {
+         /* win 1 */
+         if (!eglMakeCurrent(egl_dpy, egl_surf1, egl_surf1, egl_ctx)) {
+            printf("Error: eglMakeCurrent(1) failed\n");
+            return;
+         }
+         draw(0);
+         eglSwapBuffers(egl_dpy, egl_surf1);
+
+         /* win 2 */
+         if (!eglMakeCurrent(egl_dpy, egl_surf2, egl_surf2, egl_ctx)) {
+            printf("Error: eglMakeCurrent(2) failed\n");
+            return;
+         }
+         draw(1);
+         eglSwapBuffers(egl_dpy, egl_surf2);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   Display *x_dpy;
+   Window win1, win2;
+   EGLSurface egl_surf1, egl_surf2;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   static struct {
+      char *name;
+      GLenum value;
+      enum {GetString, GetInteger} type;
+   } info_items[] = {
+      {"GL_RENDERER", GL_RENDERER, GetString},
+      {"GL_VERSION", GL_VERSION, GetString},
+      {"GL_VENDOR", GL_VENDOR, GetString},
+      {"GL_EXTENSIONS", GL_EXTENSIONS, GetString},
+      {"GL_MAX_PALETTE_MATRICES_OES", GL_MAX_PALETTE_MATRICES_OES, GetInteger},
+      {"GL_MAX_VERTEX_UNITS_OES", GL_MAX_VERTEX_UNITS_OES, GetInteger},
+   };
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "xegl_two_win #1", 0, 0, WinWidth[0], WinHeight[0],
+                 &win1, &egl_ctx, &egl_surf1);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "xegl_two_win #2", WinWidth[0] + 50, 0,
+                 WinWidth[1], WinHeight[1],
+                 &win2, NULL, &egl_surf2);
+
+   XMapWindow(x_dpy, win1);
+
+   XMapWindow(x_dpy, win2);
+
+   if (!eglMakeCurrent(egl_dpy, egl_surf1, egl_surf1, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      for (i = 0; i < sizeof(info_items)/sizeof(info_items[0]); i++) {
+         switch (info_items[i].type) {
+            case GetString:
+               printf("%s = %s\n", info_items[i].name, (char *)glGetString(info_items[i].value));
+               break;
+            case GetInteger: {
+               GLint rv = -1;
+               glGetIntegerv(info_items[i].value, &rv);
+               printf("%s = %d\n", info_items[i].name, rv);
+               break;
+            }
+         }
+      }
+   };
+
+   init();
+
+   event_loop(x_dpy, win1, win2, egl_dpy, egl_surf1, egl_surf2, egl_ctx);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf1);
+   eglDestroySurface(egl_dpy, egl_surf2);
+   eglTerminate(egl_dpy);
+
+   XDestroyWindow(x_dpy, win1);
+   XDestroyWindow(x_dpy, win2);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/es2/xegl/Makefile

@@ -0,0 +1,51 @@
+# progs/es2/xegl/Makefile
+
+TOP = ../../..
+include $(TOP)/configs/current
+
+
+INCLUDE_DIRS = \
+	-I$(TOP)/include \
+
+HEADERS = $(TOP)/include/GLES/egl.h
+
+
+ES2_LIB_DEPS = \
+	$(TOP)/$(LIB_DIR)/libEGL.so \
+	$(TOP)/$(LIB_DIR)/libGLESv2.so
+
+
+ES2_LIBS = \
+	-L$(TOP)/$(LIB_DIR) -lEGL \
+	-L$(TOP)/$(LIB_DIR) -lGLESv2 $(LIBDRM_LIB) -lX11
+
+PROGRAMS = \
+	es2_info \
+	tri
+
+
+.c.o:
+	$(CC) -c $(INCLUDE_DIRS) $(CFLAGS) $< -o $@
+
+
+
+default: $(PROGRAMS)
+
+
+
+es2_info.c:
+	cp ../../es1/xegl/es1_info.c es2_info.c
+
+es2_info: es2_info.o $(ES2_LIB_DEPS)
+	$(CC) $(CFLAGS) es2_info.o $(ES2_LIBS) -o $@
+
+tri: tri.o $(ES2_LIB_DEPS)
+	$(CC) $(CFLAGS) tri.o $(ES2_LIBS) -o $@
+
+
+
+clean:
+	rm -f *.o *~
+	rm -f $(PROGRAMS)
+	rm -f es2_info.c
+

progs/es2/xegl/tri.c

@@ -0,0 +1,516 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ **************************************************************************/
+
+/*
+ * Draw a triangle with X/EGL and OpenGL ES 2.x
+ */
+
+#define USE_FULL_GL 0
+
+
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#if USE_FULL_GL
+#include <GL/gl.h>  /* use full OpenGL */
+#else
+#include <GLES2/gl2.h>  /* use OpenGL ES 2.x */
+#endif
+#include <EGL/egl.h>
+
+
+#define FLOAT_TO_FIXED(X)   ((X) * 65535.0)
+
+
+
+static GLfloat view_rotx = 0.0, view_roty = 0.0;
+
+static GLint u_matrix = -1;
+static GLint attr_pos = 0, attr_color = 1;
+
+
+static void
+make_z_rot_matrix(GLfloat angle, GLfloat *m)
+{
+   float c = cos(angle * M_PI / 180.0);
+   float s = sin(angle * M_PI / 180.0);
+   int i;
+   for (i = 0; i < 16; i++)
+      m[i] = 0.0;
+   m[0] = m[5] = m[10] = m[15] = 1.0;
+
+   m[0] = c;
+   m[1] = s;
+   m[4] = -s;
+   m[5] = c;
+}
+
+static void
+make_scale_matrix(GLfloat xs, GLfloat ys, GLfloat zs, GLfloat *m)
+{
+   int i;
+   for (i = 0; i < 16; i++)
+      m[i] = 0.0;
+   m[0] = xs;
+   m[5] = ys;
+   m[10] = zs;
+   m[15] = 1.0;
+}
+
+
+static void
+mul_matrix(GLfloat *prod, const GLfloat *a, const GLfloat *b)
+{
+#define A(row,col)  a[(col<<2)+row]
+#define B(row,col)  b[(col<<2)+row]
+#define P(row,col)  p[(col<<2)+row]
+   GLfloat p[16];
+   GLint i;
+   for (i = 0; i < 4; i++) {
+      const GLfloat ai0=A(i,0),  ai1=A(i,1),  ai2=A(i,2),  ai3=A(i,3);
+      P(i,0) = ai0 * B(0,0) + ai1 * B(1,0) + ai2 * B(2,0) + ai3 * B(3,0);
+      P(i,1) = ai0 * B(0,1) + ai1 * B(1,1) + ai2 * B(2,1) + ai3 * B(3,1);
+      P(i,2) = ai0 * B(0,2) + ai1 * B(1,2) + ai2 * B(2,2) + ai3 * B(3,2);
+      P(i,3) = ai0 * B(0,3) + ai1 * B(1,3) + ai2 * B(2,3) + ai3 * B(3,3);
+   }
+   memcpy(prod, p, sizeof(p));
+#undef A
+#undef B
+#undef PROD
+}
+
+
+static void
+draw(void)
+{
+   static const GLfloat verts[3][2] = {
+      { -1, -1 },
+      {  1, -1 },
+      {  0,  1 }
+   };
+   static const GLfloat colors[3][3] = {
+      { 1, 0, 0 },
+      { 0, 1, 0 },
+      { 0, 0, 1 }
+   };
+   GLfloat mat[16], rot[16], scale[16];
+
+   /* Set modelview/projection matrix */
+   make_z_rot_matrix(view_rotx, rot);
+   make_scale_matrix(0.5, 0.5, 0.5, scale);
+   mul_matrix(mat, rot, scale);
+   glUniformMatrix4fv(u_matrix, 1, GL_FALSE, mat);
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   {
+      glVertexAttribPointer(attr_pos, 2, GL_FLOAT, GL_FALSE, 0, verts);
+      glVertexAttribPointer(attr_color, 3, GL_FLOAT, GL_FALSE, 0, colors);
+      glEnableVertexAttribArray(attr_pos);
+      glEnableVertexAttribArray(attr_color);
+
+      glDrawArrays(GL_TRIANGLES, 0, 3);
+
+      glDisableVertexAttribArray(attr_pos);
+      glDisableVertexAttribArray(attr_color);
+   }
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   glViewport(0, 0, (GLint) width, (GLint) height);
+}
+
+
+static void
+create_shaders(void)
+{
+   static const char *fragShaderText =
+      "varying vec4 v_color;\n"
+      "void main() {\n"
+      "   gl_FragColor = v_color;\n"
+      "}\n";
+   static const char *vertShaderText =
+      "uniform mat4 modelviewProjection;\n"
+      "attribute vec4 pos;\n"
+      "attribute vec4 color;\n"
+      "varying vec4 v_color;\n"
+      "void main() {\n"
+      "   gl_Position = modelviewProjection * pos;\n"
+      "   v_color = color;\n"
+      "}\n";
+
+   GLuint fragShader, vertShader, program;
+   GLint stat;
+
+   fragShader = glCreateShader(GL_FRAGMENT_SHADER);
+   glShaderSource(fragShader, 1, (const char **) &fragShaderText, NULL);
+   glCompileShader(fragShader);
+   glGetShaderiv(fragShader, GL_COMPILE_STATUS, &stat);
+   if (!stat) {
+      printf("Error: fragment shader did not compile!\n");
+      exit(1);
+   }
+
+   vertShader = glCreateShader(GL_VERTEX_SHADER);
+   glShaderSource(vertShader, 1, (const char **) &vertShaderText, NULL);
+   glCompileShader(vertShader);
+   glGetShaderiv(vertShader, GL_COMPILE_STATUS, &stat);
+   if (!stat) {
+      printf("Error: vertex shader did not compile!\n");
+      exit(1);
+   }
+
+   program = glCreateProgram();
+   glAttachShader(program, fragShader);
+   glAttachShader(program, vertShader);
+   glLinkProgram(program);
+
+   glGetProgramiv(program, GL_LINK_STATUS, &stat);
+   if (!stat) {
+      char log[1000];
+      GLsizei len;
+      glGetProgramInfoLog(program, 1000, &len, log);
+      printf("Error: linking:\n%s\n", log);
+      exit(1);
+   }
+
+   glUseProgram(program);
+
+   if (1) {
+      /* test setting attrib locations */
+      glBindAttribLocation(program, attr_pos, "pos");
+      glBindAttribLocation(program, attr_color, "color");
+      glLinkProgram(program);  /* needed to put attribs into effect */
+   }
+   else {
+      /* test automatic attrib locations */
+      attr_pos = glGetAttribLocation(program, "pos");
+      attr_color = glGetAttribLocation(program, "color");
+   }
+
+   u_matrix = glGetUniformLocation(program, "modelviewProjection");
+   printf("Uniform modelviewProjection at %d\n", u_matrix);
+   printf("Attrib pos at %d\n", attr_pos);
+   printf("Attrib color at %d\n", attr_color);
+}
+
+
+static void
+init(void)
+{
+   typedef void (*proc)();
+
+#if 1 /* test code */
+   proc p = eglGetProcAddress("eglCreateContext");
+   assert(p);
+   p = eglGetProcAddress("glMapBufferOES");
+   assert(p);
+#endif
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+
+   create_shaders();
+}
+
+
+/*
+ * Create an RGB, double-buffered X window.
+ * Return the window and context handles.
+ */
+static void
+make_x_window(Display *x_dpy, EGLDisplay egl_dpy,
+              const char *name,
+              int x, int y, int width, int height,
+              Window *winRet,
+              EGLContext *ctxRet,
+              EGLSurface *surfRet)
+{
+   static const EGLint attribs[] = {
+      EGL_RED_SIZE, 1,
+      EGL_GREEN_SIZE, 1,
+      EGL_BLUE_SIZE, 1,
+      EGL_DEPTH_SIZE, 1,
+      EGL_NONE
+   };
+   static const EGLint ctx_attribs[] = {
+      EGL_CONTEXT_CLIENT_VERSION, 2,
+      EGL_NONE
+   };
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   XVisualInfo *visInfo, visTemplate;
+   int num_visuals;
+   EGLContext ctx;
+   EGLConfig config;
+   EGLint num_configs;
+   EGLint vid;
+
+   scrnum = DefaultScreen( x_dpy );
+   root = RootWindow( x_dpy, scrnum );
+
+   if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) {
+      printf("Error: couldn't get an EGL visual config\n");
+      exit(1);
+   }
+
+   assert(config);
+   assert(num_configs > 0);
+
+   if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) {
+      printf("Error: eglGetConfigAttrib() failed\n");
+      exit(1);
+   }
+
+   /* The X window visual must match the EGL config */
+   visTemplate.visualid = vid;
+   visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals);
+   if (!visInfo) {
+      printf("Error: couldn't get X visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( x_dpy, root, 0, 0, width, height,
+		        0, visInfo->depth, InputOutput,
+		        visInfo->visual, mask, &attr );
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(x_dpy, win, &sizehints);
+      XSetStandardProperties(x_dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+#if USE_FULL_GL /* XXX fix this when eglBindAPI() works */
+   eglBindAPI(EGL_OPENGL_API);
+#else
+   eglBindAPI(EGL_OPENGL_ES_API);
+#endif
+
+   ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, ctx_attribs );
+   if (!ctx) {
+      printf("Error: eglCreateContext failed\n");
+      exit(1);
+   }
+
+   /* test eglQueryContext() */
+   {
+      EGLint val;
+      eglQueryContext(egl_dpy, ctx, EGL_CONTEXT_CLIENT_VERSION, &val);
+      assert(val == 2);
+   }
+
+   *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL);
+   if (!*surfRet) {
+      printf("Error: eglCreateWindowSurface failed\n");
+      exit(1);
+   }
+
+   {
+      EGLint val;
+      eglQuerySurface(egl_dpy, *surfRet, EGL_WIDTH, &val);
+      assert(val == width);
+      eglQuerySurface(egl_dpy, *surfRet, EGL_HEIGHT, &val);
+      assert(val == height);
+      eglQuerySurface(egl_dpy, *surfRet, EGL_SURFACE_TYPE, &val);
+      assert(val == EGL_WINDOW_BIT);
+   }
+
+   XFree(visInfo);
+
+   *winRet = win;
+   *ctxRet = ctx;
+}
+
+
+static void
+event_loop(Display *dpy, Window win,
+           EGLDisplay egl_dpy, EGLSurface egl_surf)
+{
+   while (1) {
+      int redraw = 0;
+      XEvent event;
+
+      XNextEvent(dpy, &event);
+
+      switch (event.type) {
+      case Expose:
+         redraw = 1;
+         break;
+      case ConfigureNotify:
+         reshape(event.xconfigure.width, event.xconfigure.height);
+         break;
+      case KeyPress:
+         {
+            char buffer[10];
+            int r, code;
+            code = XLookupKeysym(&event.xkey, 0);
+            if (code == XK_Left) {
+               view_roty += 5.0;
+            }
+            else if (code == XK_Right) {
+               view_roty -= 5.0;
+            }
+            else if (code == XK_Up) {
+               view_rotx += 5.0;
+            }
+            else if (code == XK_Down) {
+               view_rotx -= 5.0;
+            }
+            else {
+               r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+                                 NULL, NULL);
+               if (buffer[0] == 27) {
+                  /* escape */
+                  return;
+               }
+            }
+         }
+         redraw = 1;
+         break;
+      default:
+         ; /*no-op*/
+      }
+
+      if (redraw) {
+         draw();
+         eglSwapBuffers(egl_dpy, egl_surf);
+      }
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -info                   display OpenGL renderer info\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   const int winWidth = 300, winHeight = 300;
+   Display *x_dpy;
+   Window win;
+   EGLSurface egl_surf;
+   EGLContext egl_ctx;
+   EGLDisplay egl_dpy;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   EGLint egl_major, egl_minor;
+   int i;
+   const char *s;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   x_dpy = XOpenDisplay(dpyName);
+   if (!x_dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   egl_dpy = eglGetDisplay(x_dpy);
+   if (!egl_dpy) {
+      printf("Error: eglGetDisplay() failed\n");
+      return -1;
+   }
+
+   if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) {
+      printf("Error: eglInitialize() failed\n");
+      return -1;
+   }
+
+   s = eglQueryString(egl_dpy, EGL_VERSION);
+   printf("EGL_VERSION = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_VENDOR);
+   printf("EGL_VENDOR = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
+   printf("EGL_EXTENSIONS = %s\n", s);
+
+   s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
+   printf("EGL_CLIENT_APIS = %s\n", s);
+
+   make_x_window(x_dpy, egl_dpy,
+                 "OpenGL ES 2.x tri", 0, 0, winWidth, winHeight,
+                 &win, &egl_ctx, &egl_surf);
+
+   XMapWindow(x_dpy, win);
+   if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
+      printf("Error: eglMakeCurrent() failed\n");
+      return -1;
+   }
+
+   if (printInfo) {
+      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));
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(x_dpy, win, egl_dpy, egl_surf);
+
+   eglDestroyContext(egl_dpy, egl_ctx);
+   eglDestroySurface(egl_dpy, egl_surf);
+   eglTerminate(egl_dpy);
+
+
+   XDestroyWindow(x_dpy, win);
+   XCloseDisplay(x_dpy);
+
+   return 0;
+}

progs/tests/zreaddraw.c

@@ -12,6 +12,7 @@
 #include <GL/glut.h>
 
 static GLint WinWidth = 500, WinHeight = 500;
+static GLboolean Invert = GL_FALSE;
 
 
 static void Display(void)
@@ -50,7 +51,15 @@ static void Display(void)
    glPixelZoom(4.0, 4.0);
    glColor4f(1, 0, 0, 0);
    glWindowPos2i(100, 0);
+   if (Invert) {
+      glPixelTransferf(GL_DEPTH_SCALE, -1.0);
+      glPixelTransferf(GL_DEPTH_BIAS, 1.0);
+   }
    glDrawPixels(100, 100, GL_DEPTH_COMPONENT, GL_FLOAT, depth);
+   if (Invert) {
+      glPixelTransferf(GL_DEPTH_SCALE, 1.0);
+      glPixelTransferf(GL_DEPTH_BIAS, 0.0);
+   }
 
    glDisable(GL_DEPTH_TEST);
 
@@ -77,6 +86,9 @@ static void Key(unsigned char key, int x, int y)
    (void) x;
    (void) y;
    switch (key) {
+      case 'i':
+         Invert = !Invert;
+         break;
       case 27:
          exit(0);
          break;

scons/gallium.py

@@ -340,6 +340,7 @@ def generate(env):
                 '-m32',
                 #'-march=pentium4',
                 '-mmmx', '-msse', '-msse2', # enable SIMD intrinsics
+                '-mstackrealign', # ensure stack is aligned -- do not enabled -msse without it!
                 #'-mfpmath=sse',
             ]
         if env['machine'] == 'x86_64':

scons/llvm.py

@@ -56,15 +56,17 @@ def generate(env):
         env.PrependENVPath('PATH', llvm_bin_dir)
 
     if env.Detect('llvm-config'):
-        try:
-            env['LLVM_VERSION'] = env.backtick('llvm-config --version')
-        except AttributeError:
-            env['LLVM_VERSION'] = 'X.X'
+        version = env.backtick('llvm-config --version').rstrip()
 
-        env.ParseConfig('llvm-config --cppflags')
-        env.ParseConfig('llvm-config --libs jit interpreter nativecodegen bitwriter')
-        env.ParseConfig('llvm-config --ldflags')
-        env['LINK'] = env['CXX']
+        try:
+            env.ParseConfig('llvm-config --cppflags')
+            env.ParseConfig('llvm-config --libs jit interpreter nativecodegen bitwriter')
+            env.ParseConfig('llvm-config --ldflags')
+        except OSError:
+            print 'llvm-config version %s failed' % version
+        else:
+            env['LINK'] = env['CXX']
+            env['LLVM_VERSION'] = version
 
 def exists(env):
     return True

src/Android.mk

@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)

src/egl/Android.mk

@@ -0,0 +1,41 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES :=			\
+	main/eglapi.c			\
+	main/eglclient.c		\
+	main/eglconfig.c		\
+	main/eglconfigutil.c		\
+	main/eglcontext.c		\
+	main/eglcurrent.c		\
+	main/egldisplay.c		\
+	main/egldriver.c		\
+	main/eglglobals.c		\
+	main/eglimage.c			\
+	main/egllog.c			\
+	main/eglmisc.c			\
+	main/eglmode.c			\
+	main/eglscreen.c		\
+	main/eglstring.c		\
+	main/eglsurface.c
+
+LOCAL_SRC_FILES +=			\
+	drivers/android/egl_android.c	\
+	drivers/android/droid_loader.c	\
+	drivers/android/droid_ui.cpp	\
+	drivers/android/droid_intel.c
+
+LOCAL_C_INCLUDES +=			\
+	$(LOCAL_PATH)/main		\
+	external/mesa/include		\
+	external/mesa/src/mesa		\
+	external/drm/shared-core
+
+LOCAL_CFLAGS +=	-DPTHREADS
+LOCAL_SHARED_LIBRARIES := libdl libui libutils
+LOCAL_STATIC_LIBRARIES := libes1api
+
+LOCAL_MODULE := libhgl
+
+include $(BUILD_SHARED_LIBRARY)

src/egl/drivers/android/droid.h

@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * This is based on the work of eagle, by
+ * Copyright © 2008, 2009 Kristian Høgsberg
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DROID_H_
+#define _DROID_H_
+
+#include "GL/gl.h"
+#include "GL/internal/dri_interface.h"
+
+#include "eglcurrent.h"
+#include "egldisplay.h"
+#include "eglcontext.h"
+#include "eglsurface.h"
+#include "eglconfig.h"
+
+/* opaque types */
+struct droid_loader;
+struct droid_context;
+struct droid_drawable;
+struct droid_image;
+struct droid_surface;
+
+struct droid_backend {
+   /* these are usually used by a loader */
+   const char *driver_name;
+   int (*initialize)(struct droid_backend *backend, int *fd, int *screen_number);
+   int (*process_config)(struct droid_backend *backend, _EGLConfig *conf);
+   void (*destroy)(struct droid_backend *backend);
+
+   __DRIbuffer *(*get_native_buffer)(struct droid_backend *backend,
+                                     struct droid_surface *surf,
+                                     int *width, int *height);
+   __DRIbuffer *(*get_surface_buffers)(struct droid_backend *backend,
+                                       struct droid_surface *surf,
+                                       int *width, int *height,
+                                       unsigned int *attachments, int count,
+                                       int *out_count, int has_format);
+
+   /* public methods */
+   struct droid_surface *(*create_window_surface)(struct droid_backend *backend,
+                                                  _EGLSurface *surf,
+                                                  NativeWindowType win);
+   struct droid_surface *(*create_image_surface)(struct droid_backend *backend,
+                                                 NativePixmapType pix);
+   void (*destroy_surface)(struct droid_backend *backend, struct droid_surface *surf);
+   void (*swap_native_buffers)(struct droid_backend *backend,
+                               struct droid_surface *surf);
+
+   int (*match_pixmap)(struct droid_backend *backend, _EGLConfig *conf,
+                       NativePixmapType pix);
+};
+
+struct droid_screen {
+   struct droid_loader *loader;
+
+   __DRIscreen *dri_screen;
+   __DRItexBufferExtension *tex_buffer;
+   __DRIcopyBufferExtension *copy_buffer;
+
+   const __DRIconfig **dri_configs;
+   int num_dri_configs;
+};
+
+struct droid_backend *
+droid_backend_create_intel(const char *dev);
+
+void
+droid_backend_destroy(struct droid_backend *backend);
+
+struct droid_screen *
+droid_screen_create(struct droid_backend *backend);
+
+void
+droid_screen_destroy(struct droid_screen *screen);
+
+int
+droid_screen_convert_config(struct droid_screen *screen,
+                            const __DRIconfig *conf, _EGLConfig *egl_conf);
+
+struct droid_context *
+droid_screen_create_context(struct droid_screen *screen,
+                            const __DRIconfig *conf,
+                            struct droid_context *shared);
+
+void
+droid_screen_destroy_context(struct droid_screen *screen,
+                             struct droid_context *ctx);
+
+struct droid_drawable *
+droid_screen_create_drawable(struct droid_screen *screen,
+                             const __DRIconfig *conf,
+                             struct droid_surface *surf);
+
+void *
+droid_screen_get_drawable_data(struct droid_screen *screen,
+                               struct droid_drawable *drawable);
+
+void
+droid_screen_destroy_drawable(struct droid_screen *screen,
+                              struct droid_drawable *drawable);
+
+int
+droid_screen_bind_context(struct droid_screen *screen,
+                          struct droid_drawable *draw,
+                          struct droid_drawable *read,
+                          struct droid_context *ctx);
+
+int
+droid_screen_swap_buffers(struct droid_screen *screen,
+                          struct droid_context *ctx,
+                          struct droid_drawable *drawable);
+
+#endif /* _DROID_H_ */

src/egl/drivers/android/droid_intel.c

@@ -0,0 +1,648 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * This is based on the work of eagle, by
+ * Copyright © 2008, 2009 Kristian Høgsberg
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#define LOG_TAG "DROID-INTEL"
+#include <utils/Log.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <i915_drm.h>
+#include <GL/gl.h> /* dri_interface.h uses some GL integer types... */
+#include <GL/internal/dri_interface.h>
+#include <EGL/egl.h>
+
+#include "droid.h"
+#include "droid_ui.h"
+
+#define INTEL_IS_I965(x) ((x) & INTEL_GEN_4)
+#define INTEL_IS_I915(x) ((x) & INTEL_GEN_3)
+#define INTEL_IS_I9xx(x) ((x) & (INTEL_GEN_3 | INTEL_GEN_4))
+#define INTEL_IS_I8xx(x) ((x) & (INTEL_GEN_1 | INTEL_GEN_2))
+
+#define INTEL_HAS_128_BYTE_Y_TILING(x) \
+   (((x) & (INTEL_GEN_3 | INTEL_GEN_4 | INTEL_GEN_MINOR_MASK)) > INTEL_GEN_3)
+
+enum {
+   INTEL_SURFACE_TYPE_WINDOW,
+   INTEL_SURFACE_TYPE_IMAGE,
+};
+
+/* Look at xf86-video-intel/src/common.h for the full horror of device
+ * identification.
+ */
+enum {
+	INTEL_GEN_1  = 0x10,
+	INTEL_GEN_2  = 0x20,
+	INTEL_GEN_3  = 0x40,
+	INTEL_GEN_31 = 0x41,
+	INTEL_GEN_4  = 0x80,
+
+	INTEL_GEN_MAJOR_MASK = 0xf0,
+	INTEL_GEN_MINOR_MASK = 0x0f,
+};
+
+struct droid_backend_intel {
+   struct droid_backend base;
+   int fd;
+   int screen_number;
+
+   uint32_t generation;
+   int pitch_align;
+   int enable_tiling;
+};
+
+struct droid_surface_intel {
+   int type;
+   union {
+      NativeWindowType win;
+      NativePixmapType pix;
+   } native;
+   __DRIbuffer native_buffer;
+   unsigned int native_width, native_height;
+   int native_changed;
+
+   unsigned int attachments[20];
+   __DRIbuffer buffers[10];
+   uint32_t handles[10];
+   int num_buffers;
+   int depth_idx;
+
+   _EGLSurface *surf;
+};
+
+static INLINE struct droid_backend_intel *
+lookup_backend(struct droid_backend *backend)
+{
+   return (struct droid_backend_intel *) backend;
+}
+
+static INLINE struct droid_surface_intel *
+lookup_surface(struct droid_surface *surface)
+{
+   return (struct droid_surface_intel *) surface;
+}
+
+static __DRIbuffer *
+intel_get_native_buffer(struct droid_backend *backend,
+                        struct droid_surface *surf,
+                        int *width, int *height)
+{
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+
+   /* non-window surface is single-buffered */
+   if (isurf->type != INTEL_SURFACE_TYPE_WINDOW)
+      return NULL;
+
+   if (!isurf->native_buffer.name)
+      return NULL;
+
+   if (width)
+      *width = isurf->native_width;
+   if (height)
+      *height = isurf->native_height;
+
+   return &isurf->native_buffer;
+}
+
+static INLINE uint32_t
+align_to(uint32_t value, uint32_t align)
+{
+   return (value + align - 1) & ~(align - 1);
+}
+
+static INLINE int
+fence_pitch(struct droid_backend *backend, int pitch, int tiling)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   int pitch_align, tile_width;
+
+   switch (tiling) {
+   case I915_TILING_NONE:
+   default:
+      pitch_align = intel->pitch_align;
+      tile_width = 1; /* not used */
+      break;
+   case I915_TILING_X:
+      pitch_align = 512;
+      tile_width = 512;
+      break;
+   case I915_TILING_Y:
+      pitch_align = 512;
+      tile_width =
+         (INTEL_HAS_128_BYTE_Y_TILING(intel->generation)) ? 128 : 512;
+      break;
+   }
+
+   pitch = align_to(pitch, pitch_align);
+   if (tiling == I915_TILING_NONE)
+      return pitch;
+
+   /* 965+ just needs multiples of tile width */
+   if (INTEL_IS_I965(intel->generation)) {
+      pitch = align_to(pitch,  tile_width);
+   }
+   else {
+      /* Pre-965 needs power of two tile widths */
+      while (tile_width < pitch)
+         tile_width <<= 1;
+      pitch = tile_width;
+   }
+
+   return pitch;
+}
+
+static INLINE uint32_t
+fence_size(struct droid_backend *backend, int height, int pitch, int tiling)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   int height_align;
+   uint32_t size;
+
+   switch (tiling) {
+   case I915_TILING_NONE:
+   default:
+      /* Round the height up so that the GPU's access to a 2x2 aligned
+       * subspan doesn't address an invalid page offset beyond the
+       * end of the GTT.
+       */
+      height_align = 2;
+      break;
+   case I915_TILING_X:
+      height_align = 8;
+      break;
+   case I915_TILING_Y:
+      height_align = 32;
+      break;
+   }
+
+   height = align_to(height, height_align);
+   size = pitch * height;
+   if (tiling == I915_TILING_NONE)
+      return size;
+
+   /* The 965 can have fences at any page boundary. */
+   if (INTEL_IS_I965(intel->generation)) {
+      size = align_to(size, 4096);
+   }
+   else {
+      uint32_t fence;
+
+      /* Align the size to a power of two greater than the smallest fence. */
+      if (INTEL_IS_I9xx(intel->generation))
+         fence = 1 << 20; /* 1 MiB */
+      else
+         fence = 1 << 19; /* 512 KiB */
+
+      while (fence < size)
+         fence <<= 1;
+
+      size = fence;
+   }
+
+   return size;
+}
+
+static int
+create_buffer(struct droid_backend *backend, __DRIbuffer *buffer,
+              int width, int height, int cpp, int tiling)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   struct drm_i915_gem_create create;
+   struct drm_gem_flink flink;
+
+   buffer->pitch = fence_pitch(backend, width * cpp, tiling);
+   create.size = fence_size(backend, height, buffer->pitch, tiling);
+   if (ioctl(intel->fd, DRM_IOCTL_I915_GEM_CREATE, &create)) {
+      LOGE("failed to create buffer");
+      return 0;
+   }
+
+   if (tiling != I915_TILING_NONE) {
+      struct drm_i915_gem_set_tiling set_tiling;
+
+      memset(&set_tiling, 0, sizeof(set_tiling));
+      set_tiling.handle = create.handle;
+      set_tiling.tiling_mode = tiling;
+      set_tiling.stride = buffer->pitch;
+
+      if (ioctl(intel->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling))
+         LOGW("failed to enable tiling");
+   }
+
+   flink.handle = create.handle;
+   if (ioctl(intel->fd, DRM_IOCTL_GEM_FLINK, &flink) < 0) {
+      LOGE("failed to flink buffer");
+      return 0;
+   }
+
+   buffer->name = flink.name;
+   buffer->cpp = cpp;
+   buffer->flags = 0;
+
+   return create.handle;
+}
+
+static void
+delete_buffers(struct droid_backend *backend, struct droid_surface *surf)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+   int i;
+
+   for (i = 0; i < isurf->num_buffers; i++) {
+      if (isurf->handles[i]) {
+         struct drm_gem_close close;
+
+         close.handle = isurf->handles[i];
+         if (ioctl(intel->fd, DRM_IOCTL_GEM_CLOSE, &close) < 0)
+            LOGE("failed to close bo %d", close.handle);
+         isurf->handles[i] = 0;
+      }
+   }
+
+   isurf->num_buffers = 0;
+}
+
+static __DRIbuffer *
+intel_get_surface_buffers(struct droid_backend *backend,
+                          struct droid_surface *surf,
+                          int *width, int *height,
+                          unsigned int *attachments, int count,
+                          int *out_count, int has_format)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+   unsigned int att_size;
+   __DRIbuffer buffers[10];
+   uint32_t handles[10];
+   int num = 0;
+
+   if (count > 10) {
+      LOGW("too many buffers requested");
+      count = 10;
+   }
+
+   att_size = sizeof(attachments[0]) * count * ((has_format) ? 2 : 1);
+
+   if (isurf->native_changed) {
+      delete_buffers(backend, surf);
+      isurf->native_changed = 0;
+   }
+
+   /* same buffers requested */
+   if (isurf->num_buffers == count &&
+       memcmp(isurf->attachments, attachments, att_size) == 0) {
+      num = isurf->num_buffers;
+      goto end;
+   }
+   memcpy(isurf->attachments, attachments, att_size);
+
+   while (count-- > 0) {
+      unsigned int att = *attachments++;
+      unsigned int format = (has_format) ? *attachments++ : 0;
+      unsigned int cpp = (format) ? format / 8 : isurf->native_buffer.cpp;
+      __DRIbuffer *buf = NULL;
+      int reuse;
+
+      /* re-use buffer */
+      for (reuse = 0; reuse < isurf->num_buffers; reuse++) {
+         if (isurf->buffers[reuse].attachment == att) {
+            if (isurf->buffers[reuse].cpp == cpp &&
+                isurf->handles[reuse])
+               buf = &isurf->buffers[reuse];
+            break;
+         }
+      }
+
+      if (0)
+         LOGD("%s buffer %d: att %d cpp %d",
+               (buf) ? "reuse" : "create", num, att, cpp);
+
+      if (buf) {
+         buffers[num] = isurf->buffers[reuse];
+         handles[num] = isurf->handles[reuse];
+         isurf->handles[reuse] = 0;
+      }
+      else {
+         int tiling =
+            (intel->enable_tiling) ? I915_TILING_X : I915_TILING_NONE;
+
+         buffers[num].attachment = att;
+
+         if (isurf->type == INTEL_SURFACE_TYPE_IMAGE &&
+             att == __DRI_BUFFER_FRONT_LEFT) {
+            /* return native buffer */
+            buffers[num] = isurf->native_buffer;
+            buffers[num].attachment = att;
+            handles[num] = 0;
+         } else {
+            buffers[num].attachment = att;
+            handles[num] = create_buffer(backend, &buffers[num],
+                                         isurf->native_width,
+                                         isurf->native_height,
+                                         cpp,
+                                         tiling);
+         }
+      }
+      num++;
+   }
+
+   /* delete old buffers that are not re-used */
+   delete_buffers(backend, surf);
+
+   memcpy(isurf->buffers, buffers, sizeof(buffers[0]) * num);
+   memcpy(isurf->handles, handles, sizeof(handles[0]) * num);
+   isurf->num_buffers = num;
+
+end:
+   *out_count = num;
+   *width = isurf->native_width;
+   *height = isurf->native_height;
+
+   return isurf->buffers;
+}
+
+static void
+update_native_buffer(struct droid_surface *surf)
+{
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+   __DRIbuffer *buf = &isurf->native_buffer;
+   unsigned int name, cpp, pitch, width, height;
+
+   switch (isurf->type) {
+   case INTEL_SURFACE_TYPE_WINDOW:
+      /* oem[0] always point to the buffer that a client is drawing to */
+      name = isurf->native.win->oem[0];
+      cpp = ui_bytes_per_pixel(isurf->native.win->format);
+      pitch = isurf->native.win->stride * cpp;
+      width = isurf->native.win->width;
+      height = isurf->native.win->height;
+      break;
+   case INTEL_SURFACE_TYPE_IMAGE:
+      name = isurf->native.pix->reserved;
+      cpp = ui_bytes_per_pixel(isurf->native.pix->format);
+      pitch = isurf->native.pix->stride * cpp;
+      width = isurf->native.pix->width;
+      height = isurf->native.pix->height;
+      break;
+   default:
+      name = cpp = pitch = width = height = 0;
+      break;
+   }
+
+   if (buf->name != name || buf->cpp != cpp || buf->pitch != pitch ||
+       isurf->native_width != width || isurf->native_height != height) {
+      buf->attachment = __DRI_BUFFER_FRONT_LEFT;
+      buf->name = name;
+      buf->cpp = cpp;
+      buf->pitch = pitch;
+      buf->flags = 0;
+
+      isurf->native_width = width;
+      isurf->native_height = height;
+
+      isurf->native_changed = 1;
+   }
+}
+
+static struct droid_surface *
+intel_create_window_surface(struct droid_backend *backend,
+                            _EGLSurface *surf,
+                            NativeWindowType win)
+{
+   struct droid_surface_intel *isurf;
+
+   if (!win) {
+      LOGE("invalid native window");
+      _eglError(EGL_BAD_NATIVE_WINDOW, "eglCreateWindowSurface");
+      return NULL;
+   }
+
+   /* TODO lift this limitation */
+   if (!win->oem[0]) {
+      LOGE("TODO support for non-gem based window");
+      _eglError(EGL_BAD_NATIVE_WINDOW, "eglCreateWindowSurface");
+      return NULL;
+   }
+
+   isurf = calloc(1, sizeof(*isurf));
+   if (!isurf) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
+      return NULL;
+   }
+
+   isurf->type = INTEL_SURFACE_TYPE_WINDOW;
+   isurf->native.win = win;
+
+   surf->Width = win->width;
+   surf->Height = win->height;
+   /* always back buffer */
+   surf->RenderBuffer = EGL_BACK_BUFFER;
+
+   isurf->surf = surf;
+
+   update_native_buffer((struct droid_surface *) isurf);
+
+   return (struct droid_surface *) isurf;
+}
+
+static struct droid_surface *
+intel_create_image_surface(struct droid_backend *backend,
+                           NativePixmapType pix)
+{
+   struct droid_surface_intel *isurf;
+   int cpp;
+
+   if (!pix) {
+      LOGE("invalid native pixmap");
+      _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCreateImage");
+      return NULL;
+   }
+
+   /* TODO lift this limitation */
+   if (!pix->reserved) {
+      LOGE("TODO support for non-gem based pixmap");
+      _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCreateImage");
+      return NULL;
+   }
+
+   isurf = calloc(1, sizeof(*isurf));
+   if (!isurf) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
+      return NULL;
+   }
+
+   isurf->type = INTEL_SURFACE_TYPE_IMAGE;
+   isurf->native.pix = pix;
+
+   update_native_buffer((struct droid_surface *) isurf);
+
+   return (struct droid_surface *) isurf;
+}
+
+static void
+intel_destroy_surface(struct droid_backend *backend, struct droid_surface *surf)
+{
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+   delete_buffers(backend, surf);
+   free(isurf);
+}
+
+static void
+intel_swap_native_buffers(struct droid_backend *backend,
+                          struct droid_surface *surf)
+{
+   struct droid_surface_intel *isurf = lookup_surface(surf);
+
+   if (isurf->type == INTEL_SURFACE_TYPE_WINDOW) {
+      uint32_t flags;
+
+      flags = isurf->native.win->swapBuffers(isurf->native.win);
+      if (flags & EGL_NATIVES_FLAG_SIZE_CHANGED) {
+         update_native_buffer(surf);
+      } else {
+         /* oem[0] is changed after buffer swap */
+         isurf->native_buffer.name = isurf->native.win->oem[0];
+      }
+   }
+}
+
+static int
+intel_match_pixmap(struct droid_backend *backend, _EGLConfig *conf,
+                   NativePixmapType pix)
+{
+   int val;
+   val = GET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_TYPE);
+   /* match the visual type */
+   return (pix->format == val);
+}
+
+static int
+intel_initialize(struct droid_backend *backend, int *fd, int *screen_number)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   drm_auth_t auth;
+   int err;
+
+   err = ioctl(intel->fd, DRM_IOCTL_GET_MAGIC, &auth);
+   if (!err)
+      err = ui_auth_gpu(auth.magic);
+
+   if (err) {
+      LOGE("failed to authenticate");
+      return 0;
+   }
+
+   if (fd)
+      *fd = intel->fd;
+   if (screen_number)
+      *screen_number = intel->screen_number;
+
+   return 1;
+}
+
+#include <assert.h>
+static int
+intel_process_config(struct droid_backend *backend, _EGLConfig *conf)
+{
+   int r, g, b, a;
+   int surface_type;
+   int format;
+
+   r = GET_CONFIG_ATTRIB(conf, EGL_RED_SIZE);
+   g = GET_CONFIG_ATTRIB(conf, EGL_GREEN_SIZE);
+   b = GET_CONFIG_ATTRIB(conf, EGL_BLUE_SIZE);
+   a = GET_CONFIG_ATTRIB(conf, EGL_ALPHA_SIZE);
+   format = ui_get_rgb_format(r, g, b, a);
+
+   if (format) {
+      SET_CONFIG_ATTRIB(conf, EGL_NATIVE_VISUAL_TYPE, format);
+      SET_CONFIG_ATTRIB(conf, EGL_SURFACE_TYPE,
+                        EGL_WINDOW_BIT |
+                        EGL_PIXMAP_BIT |
+                        EGL_PBUFFER_BIT);
+   }
+   else {
+      SET_CONFIG_ATTRIB(conf, EGL_SURFACE_TYPE, EGL_PBUFFER_BIT);
+   }
+
+   return 1;
+}
+
+static void
+intel_destroy(struct droid_backend *backend)
+{
+   struct droid_backend_intel *intel = lookup_backend(backend);
+   close(intel->fd);
+   free(intel);
+}
+
+struct droid_backend *
+droid_backend_create_intel(const char *dev)
+{
+   struct droid_backend_intel *intel;
+
+   intel = calloc(1, sizeof(*intel));
+   if (!intel)
+      return NULL;
+
+   intel->fd = open(dev, O_RDWR);
+   if (intel->fd < 0) {
+      LOGE("failed to open %s", dev);
+      free(intel);
+      return NULL;
+   }
+
+   intel->screen_number = 0;
+
+   /* XXX query using I915_GETPARAM + PARAM_CHIPSET_ID */
+   intel->generation = INTEL_GEN_3;
+
+   intel->pitch_align = 64;
+   intel->enable_tiling = 1;
+
+   intel->base.driver_name = "i915";
+   intel->base.initialize = intel_initialize;
+   intel->base.process_config = intel_process_config;
+   intel->base.destroy = intel_destroy;
+
+   intel->base.get_native_buffer = intel_get_native_buffer;
+   intel->base.get_surface_buffers = intel_get_surface_buffers;
+
+   intel->base.create_window_surface = intel_create_window_surface;
+   intel->base.create_image_surface = intel_create_image_surface;
+   intel->base.destroy_surface = intel_destroy_surface;
+   intel->base.swap_native_buffers = intel_swap_native_buffers;
+
+   intel->base.match_pixmap = intel_match_pixmap;
+
+   return &intel->base;
+}

src/egl/drivers/android/droid_loader.c

@@ -0,0 +1,509 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * This is based on the work of eagle, by
+ * Copyright © 2008, 2009 Kristian Høgsberg
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#define LOG_TAG "DROID-LOADER"
+#include <utils/Log.h>
+
+#include <string.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <assert.h>
+
+#include "droid.h"
+#include "EGL/internal/eglimage_dri.h"
+
+#ifndef DROID_DRIVER_PATH
+#define DROID_DRIVER_PATH "/system/lib"
+#endif
+
+struct droid_loader {
+   struct droid_backend *backend;
+
+   char *filename;
+   void *handle;
+
+   __DRIcoreExtension *core;
+   __DRIdri2Extension *dri2;
+};
+
+struct droid_context {
+   __DRIcontext *dri_context;
+};
+
+struct droid_drawable {
+   struct droid_loader *loader;
+   struct droid_surface *surface;
+
+   __DRIdrawable *dri_drawable;
+   const __DRIconfig *dri_config;
+   __DRIEGLImage *dri_image;
+};
+
+static __DRIbuffer *
+loader_ext_get_buffers_with_format(__DRIdrawable *driDrawable,
+                                   int *width, int *height,
+                                   unsigned int *attachments, int count,
+                                   int *out_count, void *loaderPrivate)
+{
+   struct droid_drawable *drawable = (struct droid_drawable *) loaderPrivate;
+   struct droid_loader *loader = drawable->loader;
+   __DRIbuffer *buffers;
+
+   buffers = loader->backend->get_surface_buffers(loader->backend,
+                                                  drawable->surface,
+                                                  width, height,
+                                                  attachments, count,
+                                                  out_count, 1);
+
+   return buffers;
+}
+
+static const __DRIdri2LoaderExtension loader_ext_dri2_loader = {
+   { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION },
+   NULL,
+   NULL,
+   loader_ext_get_buffers_with_format,
+};
+
+static int
+loader_ext_get_ust(int64_t *ust)
+{
+   struct timeval tv;
+
+   if (ust == NULL)
+      return -EFAULT;
+
+   if (gettimeofday(&tv, NULL) == 0) {
+      ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
+      return 0;
+   } else {
+      return -errno;
+   }
+}
+
+static const __DRIsystemTimeExtension loader_ext_system_time = {
+   { __DRI_SYSTEM_TIME, __DRI_SYSTEM_TIME_VERSION },
+   loader_ext_get_ust,
+   NULL,
+};
+
+static const __DRIextension *loader_extensions[] = {
+   &loader_ext_dri2_loader.base,
+   &loader_ext_system_time.base,
+   NULL
+};
+
+static struct droid_loader *
+loader_create(struct droid_backend *backend)
+{
+   struct droid_loader *loader;
+
+   loader = calloc(1, sizeof(*loader));
+   if (!loader)
+      return NULL;
+
+   loader->backend = backend;
+
+   return loader;
+}
+
+static void
+loader_destroy(struct droid_loader *loader)
+{
+   if (loader->filename)
+      free(loader->filename);
+   if (loader->handle)
+      dlclose(loader->handle);
+   free(loader);
+}
+
+static int
+loader_load(struct droid_loader *loader, const char *filename)
+{
+   const __DRIextension **extensions;
+   const char *path = NULL;
+   int i;
+
+   LOGD("Loading DRI driver %s", filename);
+
+   loader->handle = dlopen(filename, RTLD_NOW | RTLD_LOCAL);
+   if (loader->handle == NULL) {
+      LOGE("dlopen: %s", dlerror());
+      return 0;
+   }
+
+   extensions = dlsym(loader->handle, __DRI_DRIVER_EXTENSIONS);
+   if (extensions == NULL) {
+      LOGE("dlsym: %s", dlerror());
+      dlclose(loader->handle);
+      loader->handle = NULL;
+      return 0;
+   }
+
+   for (i = 0; extensions[i]; i++) {
+      if (strcmp(extensions[i]->name, __DRI_CORE) == 0 &&
+          extensions[i]->version >= __DRI_CORE_VERSION) {
+         loader->core = (__DRIcoreExtension *) extensions[i];
+      }
+
+      if (strcmp(extensions[i]->name, __DRI_DRI2) == 0 &&
+          extensions[i]->version >= __DRI_DRI2_VERSION) {
+         loader->dri2 = (__DRIdri2Extension *) extensions[i];
+      }
+   }
+
+   if (loader->core == NULL || loader->dri2 == NULL) {
+      LOGE("missing required DRI extensions");
+      dlclose(loader->handle);
+      loader->handle = NULL;
+      return 0;
+   }
+
+   return 1;
+}
+
+static int
+loader_init(struct droid_loader *loader)
+{
+   char filename[1024];
+   const char *path;
+
+   path = DROID_DRIVER_PATH;
+   snprintf(filename, sizeof(filename), "%s/%s_dri.so",
+            path, loader->backend->driver_name);
+
+   if (!loader_load(loader, filename))
+      return 0;
+
+   loader->filename = strdup(filename);
+
+   return 1;
+}
+
+void
+droid_backend_destroy(struct droid_backend *backend)
+{
+   backend->destroy(backend);
+}
+
+struct droid_screen *
+droid_screen_create(struct droid_backend *backend)
+{
+   struct droid_screen *screen = NULL;
+   struct droid_loader *loader;
+   const __DRIextension **extensions;
+   int fd, screen_number;
+   int i;
+
+   loader = loader_create(backend);
+   if (!loader || !loader_init(loader)) {
+      LOGE("failed to initialize loader");
+      goto fail;
+   }
+
+   screen = calloc(1, sizeof(*screen));
+   if (!screen) {
+      LOGE("failed to allocate new screen");
+      goto fail;
+   }
+
+   if (!loader->backend->initialize(loader->backend, &fd, &screen_number)) {
+      LOGE("failed to initialize backend");
+      goto fail;
+   }
+
+   screen->loader = loader;
+   screen->dri_screen =
+      loader->dri2->createNewScreen(screen_number, fd,
+                                    loader_extensions,
+                                    &screen->dri_configs, NULL);
+   if (!screen->dri_screen) {
+      LOGE("failed to create DRI screen");
+      goto fail;
+   }
+
+   extensions = loader->core->getExtensions(screen->dri_screen);
+
+   for (i = 0; extensions && extensions[i]; i++) {
+      if (strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0 &&
+          extensions[i]->version >= __DRI_TEX_BUFFER_VERSION)
+         screen->tex_buffer = (__DRItexBufferExtension *) extensions[i];
+
+      if (strcmp(extensions[i]->name, __DRI_COPY_BUFFER) == 0 &&
+          extensions[i]->version >= __DRI_COPY_BUFFER_VERSION)
+         screen->copy_buffer = (__DRIcopyBufferExtension *) extensions[i];
+   }
+
+   if (!screen->tex_buffer) {
+      LOGE("DRI driver has no TexBuffer extension");
+      goto fail;
+   }
+
+   if (!screen->tex_buffer) {
+      LOGE("DRI driver has no CopyBuffer extension");
+      goto fail;
+   }
+
+   for (i = 0; screen->dri_configs[i]; i++)
+      ;
+   screen->num_dri_configs = i;
+
+   return screen;
+
+fail:
+   if (screen)
+      droid_screen_destroy(screen);
+   if (loader)
+      loader_destroy(loader);
+
+   return NULL;
+}
+
+void
+droid_screen_destroy(struct droid_screen *screen)
+{
+   struct droid_loader *loader = screen->loader;
+   if (screen->dri_screen)
+      loader->core->destroyScreen(screen->dri_screen);
+   free(screen);
+}
+
+static const struct {
+   EGLenum egl_attrib;
+   unsigned int dri_attrib;
+} droid_attrib_map[] = {
+   { EGL_BUFFER_SIZE,              __DRI_ATTRIB_BUFFER_SIZE },
+   { EGL_RED_SIZE,                 __DRI_ATTRIB_RED_SIZE },
+   { EGL_GREEN_SIZE,               __DRI_ATTRIB_GREEN_SIZE },
+   { EGL_BLUE_SIZE,                __DRI_ATTRIB_BLUE_SIZE },
+   { EGL_ALPHA_SIZE,               __DRI_ATTRIB_ALPHA_SIZE },
+   { EGL_BIND_TO_TEXTURE_RGB,      __DRI_ATTRIB_BIND_TO_TEXTURE_RGB },
+   { EGL_BIND_TO_TEXTURE_RGBA,     __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA },
+   { EGL_CONFIG_CAVEAT,            __DRI_ATTRIB_CONFIG_CAVEAT },
+   { EGL_DEPTH_SIZE,               __DRI_ATTRIB_DEPTH_SIZE },
+   { EGL_LEVEL,                    __DRI_ATTRIB_LEVEL },
+   { EGL_MAX_PBUFFER_WIDTH,        __DRI_ATTRIB_MAX_PBUFFER_WIDTH },
+   { EGL_MAX_PBUFFER_HEIGHT,       __DRI_ATTRIB_MAX_PBUFFER_HEIGHT },
+   { EGL_MAX_PBUFFER_PIXELS,       __DRI_ATTRIB_MAX_PBUFFER_PIXELS },
+   { EGL_SAMPLE_BUFFERS,           __DRI_ATTRIB_SAMPLE_BUFFERS },
+   { EGL_SAMPLES,                  __DRI_ATTRIB_SAMPLES },
+   { EGL_STENCIL_SIZE,             __DRI_ATTRIB_STENCIL_SIZE },
+};
+
+int
+droid_screen_convert_config(struct droid_screen *screen,
+                            const __DRIconfig *conf, _EGLConfig *egl_conf)
+{
+   struct droid_loader *loader = screen->loader;
+   const int num_attrs =
+      sizeof(droid_attrib_map) / sizeof(droid_attrib_map[0]);
+   int i;
+
+   for (i = 0; i < num_attrs; i++) {
+      unsigned int dri_attrib = droid_attrib_map[i].dri_attrib;
+      unsigned int dri_value;
+      EGLenum egl_attrib = droid_attrib_map[i].egl_attrib;
+      EGLint egl_value;
+
+      if (!loader->core->getConfigAttrib(conf, dri_attrib, &dri_value)) {
+         LOGE("failed to get attribute %02d for %p", dri_attrib, conf);
+         return 0;
+      }
+
+      switch (egl_attrib) {
+      case EGL_CONFIG_CAVEAT:
+         if (dri_value & __DRI_ATTRIB_SLOW_BIT)
+            egl_value = EGL_SLOW_CONFIG;
+         else if  (dri_value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
+            egl_value = EGL_NON_CONFORMANT_CONFIG;
+         else
+            egl_value = EGL_NONE;
+         break;
+      default:
+         egl_value = (EGLint) dri_value;
+         break;
+      }
+      SET_CONFIG_ATTRIB(egl_conf, egl_attrib, egl_value);
+   }
+
+   return loader->backend->process_config(loader->backend, egl_conf);
+}
+
+struct droid_context *
+droid_screen_create_context(struct droid_screen *screen,
+                            const __DRIconfig *conf,
+                            struct droid_context *shared)
+{
+   struct droid_loader *loader = screen->loader;
+   struct droid_context *ctx;
+
+   ctx = calloc(1, sizeof(*ctx));
+   if (!ctx) {
+      LOGE("failed to allocate context");
+      return NULL;
+   }
+
+   ctx->dri_context =
+      loader->dri2->createNewContext(screen->dri_screen, conf,
+                                     (shared) ? shared->dri_context : NULL,
+                                     NULL);
+   if (!ctx->dri_context) {
+      LOGE("failed to create DRI context");
+      free(ctx);
+      return NULL;
+   }
+
+   return ctx;
+}
+
+void
+droid_screen_destroy_context(struct droid_screen *screen,
+                             struct droid_context *ctx)
+{
+   struct droid_loader *loader = screen->loader;
+   loader->core->destroyContext(ctx->dri_context);
+   free(ctx);
+}
+
+struct droid_drawable *
+droid_screen_create_drawable(struct droid_screen *screen,
+                             const __DRIconfig *conf,
+                             struct droid_surface *surf)
+{
+   struct droid_loader *loader = screen->loader;
+   struct droid_drawable *drawable;
+
+   drawable = calloc(1, sizeof(*drawable));
+   if (!drawable) {
+      LOGE("failed to allocate drawable");
+      return NULL;
+   }
+
+   /* needed in GetBuffers */
+   drawable->loader = loader;
+   drawable->surface = surf;
+   drawable->dri_config = conf;
+
+   drawable->dri_drawable =
+      loader->dri2->createNewDrawable(screen->dri_screen,
+                                      conf, (void *) drawable);
+   if (!drawable->dri_drawable) {
+      LOGE("failed to create DRI drawable");
+      free(drawable);
+      return NULL;
+   }
+
+   return drawable;
+}
+
+void *
+droid_screen_get_drawable_data(struct droid_screen *screen,
+                               struct droid_drawable *drawable)
+{
+   struct droid_loader *loader = screen->loader;
+   __DRIEGLImage *img = drawable->dri_image;
+
+   if (!img) {
+      unsigned int val;
+
+      img = calloc(1, sizeof(__DRIEGLImage));
+      if (!img)
+         return NULL;
+
+      img->magic = __DRI_EGL_IMAGE_MAGIC;
+      img->drawable = drawable->dri_drawable;
+      img->level = 0;
+      if (loader->core->getConfigAttrib(drawable->dri_config,
+                                        __DRI_ATTRIB_ALPHA_SIZE, &val))
+         img->texture_format_rgba = (val > 0);
+
+      drawable->dri_image = img;
+   }
+
+   return (void *) img;
+}
+
+void
+droid_screen_destroy_drawable(struct droid_screen *screen,
+                              struct droid_drawable *drawable)
+{
+   struct droid_loader *loader = screen->loader;
+   if (drawable->dri_image)
+      free(drawable->dri_image);
+   loader->core->destroyDrawable(drawable->dri_drawable);
+   free(drawable);
+}
+
+int
+droid_screen_bind_context(struct droid_screen *screen,
+                          struct droid_drawable *draw,
+                          struct droid_drawable *read,
+                          struct droid_context *ctx)
+{
+   struct droid_loader *loader = screen->loader;
+   int ret = 0;
+
+   if (ctx) {
+      if (draw && read)
+         ret = loader->core->bindContext(ctx->dri_context,
+                                         draw->dri_drawable,
+                                         read->dri_drawable);
+      else if (!draw && !read)
+         ret = loader->core->unbindContext(ctx->dri_context);
+   }
+
+   if (!ret)
+      LOGE("failed to bind context %p", ctx);
+
+   return ret;
+}
+
+int
+droid_screen_swap_buffers(struct droid_screen *screen,
+                          struct droid_context *ctx,
+                          struct droid_drawable *drawable)
+{
+   struct droid_loader *loader = screen->loader;
+   __DRIbuffer *native;
+   int width, height;
+   int err = 0;
+
+   native = loader->backend->get_native_buffer(loader->backend,
+                                               drawable->surface,
+                                               &width, &height);
+
+   /* copy from front buffer to native buffer */
+   if (native)
+      err = screen->copy_buffer->copyBuffer(ctx->dri_context, native, 0, 0,
+                                            drawable->dri_drawable,
+                                            __DRI_BUFFER_FRONT_LEFT, 0, 0,
+                                            width, height);
+
+   if (!err)
+      loader->backend->swap_native_buffers(loader->backend, drawable->surface);
+
+   return (!err);
+}

src/egl/drivers/android/droid_ui.cpp

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <ui/PixelFormat.h>
+#include <ui/ISurfaceComposer.h>
+
+#include "droid_ui.h"
+
+using namespace android;
+
+namespace android {
+   const sp<ISurfaceComposer>& _get_surface_manager();
+};
+
+int
+ui_auth_gpu(drm_magic_t magic)
+{
+   /*
+    * surface flinger itself or root; we might want something like
+    * getSurfaceFlinger() from libEGL
+    */
+   if (getuid() == 1000 || getuid() == 0)
+      return 0;
+
+   sp<ISurfaceComposer> sm(_get_surface_manager());
+   if (sm == NULL)
+      return -ENODEV;
+   return sm->authGPU(magic);
+}
+
+int ui_bytes_per_pixel(int format)
+{
+   return bytesPerPixel(format);
+}
+
+int ui_get_rgb_format(int red, int green, int blue, int alpha)
+{
+   PixelFormatInfo info;
+   PixelFormat fmt;
+
+   /* look in the RGB range */
+   for (fmt = 1; fmt < PIXEL_FORMAT_YCbCr_422_SP; fmt++) {
+      status_t err = getPixelFormatInfo(fmt, &info);
+      if (err)
+         return -1;
+      /* bpp must be equal to depth */
+      if (info.bytesPerPixel * 8 != info.bitsPerPixel)
+         continue;
+
+      if ((info.h_red - info.l_red != red) ||
+          (info.h_green - info.l_green != green) ||
+          (info.h_blue - info.l_blue != blue) ||
+          (info.h_alpha - info.l_alpha != alpha))
+         continue;
+
+      /* mask? */
+      return fmt;
+   }
+
+   return -1;
+}

src/egl/drivers/android/droid_ui.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DROID_UI_H
+#define _DROID_UI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /*__cplusplus */
+
+#include <drm.h>
+
+int ui_auth_gpu(drm_magic_t magic);
+int ui_bytes_per_pixel(int format);
+int ui_get_rgb_format(int red, int green, int blue, int alpha);
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus */
+
+#endif /* _DROID_UI_H */

src/egl/drivers/android/egl_android.c

@@ -0,0 +1,596 @@
+/*
+ * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#define LOG_TAG "DROID-EGL"
+#include <utils/Log.h>
+
+#include "glapi/glapi.h"
+
+#include "eglconfig.h"
+#include "eglcontext.h"
+#include "egldisplay.h"
+#include "egldriver.h"
+#include "eglglobals.h"
+#include "egllog.h"
+#include "eglsurface.h"
+#include "eglimage.h"
+
+#include "droid.h"
+
+#ifndef DROID_DEVICE_PATH
+#define DROID_DEVICE_PATH "/dev/dri/card0"
+#endif
+
+struct droid_egl_driver
+{
+   _EGLDriver base;
+
+   /* EGL_DEFAULT_DISPLAY */
+   struct droid_egl_display *default_display;
+   void (*flush_current)(void);
+   void (*finish_current)(void);
+};
+
+struct droid_egl_display
+{
+   EGLint refcnt;
+
+   EGLint apis;
+   EGLint major;
+   EGLint minor;
+
+   struct droid_backend *backend;
+   struct droid_screen *screen;
+};
+
+struct droid_egl_context {
+   _EGLContext base;
+   struct droid_context *context;
+};
+
+struct droid_egl_surface {
+   _EGLSurface base;
+   struct droid_drawable *drawable;
+   struct droid_surface *surface;
+};
+
+struct droid_egl_image {
+   _EGLImage base;
+   struct droid_drawable *drawable;
+   struct droid_surface *surface;
+};
+
+struct droid_egl_config {
+   _EGLConfig base;
+   const __DRIconfig *config;
+};
+
+static INLINE struct droid_egl_driver *
+lookup_driver(_EGLDriver *drv)
+{
+   return (struct droid_egl_driver *) drv;
+}
+
+static INLINE struct droid_egl_display *
+lookup_display(_EGLDisplay *dpy)
+{
+   return (struct droid_egl_display *) dpy->DriverData;
+}
+
+static INLINE struct droid_egl_context *
+lookup_context(_EGLContext *context)
+{
+   return (struct droid_egl_context *) context;
+}
+
+static INLINE struct droid_egl_surface *
+lookup_surface(_EGLSurface *surface)
+{
+   return (struct droid_egl_surface *) surface;
+}
+
+static INLINE struct droid_egl_image *
+lookup_image(_EGLImage *image)
+{
+   return (struct droid_egl_image *) image;
+}
+
+static INLINE struct droid_egl_config *
+lookup_config(_EGLConfig *conf)
+{
+   return (struct droid_egl_config *) conf;
+}
+
+static void
+droid_create_configs(_EGLDisplay *dpy, struct droid_egl_display *droid_dpy,
+                     const __DRIconfig **configs, EGLint num_configs)
+{
+   EGLint i;
+   EGLint id = 1;
+
+   for (i = 0; i < num_configs; i++) {
+      struct droid_egl_config *droid_conf = calloc(1, sizeof(*droid_conf));
+      EGLint val;
+
+      if (!droid_conf)
+         break;
+
+      _eglInitConfig(&droid_conf->base, id);
+      droid_conf->config = configs[i];
+      if (!droid_screen_convert_config(droid_dpy->screen, droid_conf->config,
+                                       &droid_conf->base)) {
+         free(droid_conf);
+         continue;
+      }
+
+      val = GET_CONFIG_ATTRIB(&droid_conf->base, EGL_CONFIG_CAVEAT);
+      /* we do not want slow configs */
+      if (val == EGL_SLOW_CONFIG) {
+         free(droid_conf);
+      } else {
+         _eglAddConfig(dpy, &droid_conf->base);
+         id++;
+      }
+   }
+}
+
+
+static EGLBoolean
+droid_initialize_display(struct droid_egl_display *droid_dpy)
+{
+   const char *path = DROID_DEVICE_PATH;
+
+   droid_dpy->backend = droid_backend_create_intel(path);
+   if (!droid_dpy->backend)
+      return EGL_FALSE;
+
+   droid_dpy->screen = droid_screen_create(droid_dpy->backend);
+   if (!droid_dpy->screen) {
+      free(droid_dpy->backend);
+      droid_dpy->backend = NULL;
+      return EGL_FALSE;
+   }
+
+   droid_dpy->apis = EGL_OPENGL_ES_BIT;
+   droid_dpy->major = 1;
+   droid_dpy->major = 4;
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+droid_eglInitialize(_EGLDriver *drv, _EGLDisplay *dpy,
+                    EGLint *major, EGLint *minor)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   struct droid_egl_display *droid_dpy;
+
+   if (dpy->NativeDisplay != EGL_DEFAULT_DISPLAY)
+      return _eglError(EGL_NOT_INITIALIZED, "eglInitialize");
+
+   /* the default display */
+   droid_dpy = droid_drv->default_display;
+   if (!droid_dpy) {
+      droid_dpy = calloc(1, sizeof(*droid_dpy));
+      if (!droid_dpy)
+         return _eglError(EGL_BAD_ALLOC, "eglInitialize");
+      if (!droid_initialize_display(droid_dpy))
+         return _eglError(EGL_NOT_INITIALIZED, "eglInitialize");
+
+      droid_create_configs(dpy, droid_dpy, droid_dpy->screen->dri_configs,
+                           droid_dpy->screen->num_dri_configs);
+
+#if EGL_KHR_image_base
+      if (droid_dpy->backend->create_image_surface) {
+         dpy->Extensions.KHR_image = EGL_TRUE;
+         dpy->Extensions.KHR_image_base = EGL_TRUE;
+         dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
+      }
+#endif
+
+      droid_drv->default_display = droid_dpy;
+   }
+
+   dpy->DriverData = (void *) droid_dpy;
+   droid_dpy->refcnt++;
+
+   *major = droid_dpy->major;
+   *minor = droid_dpy->minor;
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+droid_eglTerminate(_EGLDriver *drv, _EGLDisplay *dpy)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+
+   dpy->DriverData = NULL;
+   droid_dpy->refcnt--;
+   if (!droid_dpy->refcnt) {
+      _eglReleaseDisplayResources(drv, dpy);
+      _eglCleanupDisplay(dpy);
+
+      free(droid_dpy);
+      droid_drv->default_display = NULL;
+   }
+
+   return EGL_TRUE;
+}
+
+static _EGLProc
+droid_eglGetProcAddress(const char *procname)
+{
+   return (_EGLProc) _glapi_get_proc_address(procname);
+}
+
+static _EGLContext *
+droid_eglCreateContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
+                       _EGLContext *share_list, const EGLint *attrib_list)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_config *droid_conf = lookup_config(conf);
+   struct droid_egl_context *shared = lookup_context(share_list);
+   struct droid_egl_context *ctx;
+
+   ctx = calloc(1, sizeof(*ctx));
+   if (!ctx) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateContext");
+      return NULL;
+   }
+
+   if (!_eglInitContext(drv, &ctx->base, &droid_conf->base, attrib_list)) {
+      free(ctx);
+      return NULL;
+   }
+
+   ctx->context =
+      droid_screen_create_context(droid_dpy->screen, droid_conf->config,
+                                  (shared) ? shared->context : NULL);
+   if (!ctx->context) {
+      free(ctx);
+      return NULL;
+   }
+
+   return &ctx->base;
+}
+
+static EGLBoolean
+droid_eglDestroyContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_context *droid_ctx = lookup_context(ctx);
+
+   if (!_eglIsContextBound(ctx))
+      droid_screen_destroy_context(droid_dpy->screen, droid_ctx->context);
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+droid_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *d,
+                     _EGLSurface *r, _EGLContext *ctx)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_surface *draw = lookup_surface(d);
+   struct droid_egl_surface *read = lookup_surface(r);
+   struct droid_egl_context *droid_ctx = lookup_context(ctx);
+   _EGLContext *old;
+   struct droid_egl_context *droid_old;
+
+   old = _eglGetCurrentContext();
+   /* an unlinked context will be invalid after context switch */
+   if (!_eglIsContextLinked(old))
+      old = NULL;
+
+   droid_old = lookup_context(old);
+
+   if (!_eglMakeCurrent(drv, dpy, d, r, ctx))
+      return EGL_FALSE;
+
+   if (droid_old && droid_old != droid_ctx && droid_drv->flush_current)
+      droid_drv->flush_current();
+
+   _glapi_check_multithread();
+
+   /* bind new context or unbind old one */
+   if (droid_ctx)
+      droid_screen_bind_context(droid_dpy->screen,
+                                draw->drawable, read->drawable,
+                                droid_ctx->context);
+   else if (droid_old)
+      droid_screen_bind_context(droid_dpy->screen,
+                                NULL, NULL,
+                                droid_old->context);
+
+   return EGL_TRUE;
+}
+
+static _EGLSurface *
+droid_eglCreateWindowSurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
+                             NativeWindowType window, const EGLint *attrib_list)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_config *droid_conf = lookup_config(conf);
+   struct droid_egl_surface *surf;
+
+   surf = calloc(1, sizeof(*surf));
+   if (!surf) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
+      return NULL;
+   }
+
+   if (!_eglInitSurface(drv, &surf->base, EGL_WINDOW_BIT, &droid_conf->base, attrib_list)) {
+      free(surf);
+      return NULL;
+   }
+
+   surf->surface =
+      droid_dpy->backend->create_window_surface(droid_dpy->backend,
+                                                &surf->base, window);
+   if (!surf->surface) {
+      free(surf);
+      return NULL;
+   }
+
+   surf->drawable = droid_screen_create_drawable(droid_dpy->screen,
+                                                 droid_conf->config,
+                                                 surf->surface);
+   if (!surf->drawable) {
+      droid_dpy->backend->destroy_surface(droid_dpy->backend, surf->surface);
+      free(surf);
+      return NULL;
+   }
+
+   return &surf->base;
+}
+
+static EGLBoolean
+droid_eglDestroySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_surface *droid_surf = lookup_surface(surf);
+
+   if (_eglIsSurfaceBound(&droid_surf->base))
+      return EGL_TRUE;
+
+   droid_screen_destroy_drawable(droid_dpy->screen, droid_surf->drawable);
+   droid_dpy->backend->destroy_surface(droid_dpy->backend, droid_surf->surface);
+   free(droid_surf);
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+droid_eglSwapBuffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_surface *droid_surf = lookup_surface(surf);
+   _EGLContext *ctx = _eglGetCurrentContext();
+   struct droid_egl_context *droid_ctx = lookup_context(ctx);
+
+   if (droid_ctx) {
+      if (droid_drv->flush_current)
+         droid_drv->flush_current();
+
+      droid_screen_swap_buffers(droid_dpy->screen,
+                                droid_ctx->context,
+                                droid_surf->drawable);
+   }
+
+   return EGL_TRUE;
+}
+
+#if EGL_KHR_image_base
+
+static _EGLImage *
+droid_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+                       EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_image *droid_img;
+   struct droid_egl_config *droid_conf;
+   _EGLConfig *conf;
+   EGLint val, i;
+
+   /* only EGL_KHR_image_pixmap is supported */
+   if (target != EGL_NATIVE_PIXMAP_KHR || ctx) {
+      _eglError(EGL_BAD_PARAMETER, "eglCreateImageKHR");
+      return NULL;
+   }
+
+   for (i = 0; i < dpy->NumConfigs; i++) {
+      conf = dpy->Configs[i];
+      if (droid_dpy->backend->match_pixmap(droid_dpy->backend, conf,
+                                           (NativePixmapType) buffer)) {
+         EGLint val;
+         val = GET_CONFIG_ATTRIB(conf, EGL_BIND_TO_TEXTURE_RGB);
+         val |= GET_CONFIG_ATTRIB(conf, EGL_BIND_TO_TEXTURE_RGBA);
+         if (val)
+            break;
+      }
+   }
+   if (i >= dpy->NumConfigs)
+      return NULL;
+
+   droid_img = calloc(1, sizeof(*droid_img));
+   if (!droid_img) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateImageKHR");
+      return NULL;
+   }
+
+   if (!_eglInitImage(drv, &droid_img->base, attr_list)) {
+      free(droid_img);
+      return NULL;
+   }
+
+   droid_img->surface = 
+      droid_dpy->backend->create_image_surface(droid_dpy->backend,
+                                               (NativePixmapType) buffer);
+   if (!droid_img->surface) {
+      free(droid_img);
+      return NULL;
+   }
+
+   droid_conf = lookup_config(conf);
+   droid_img->drawable =
+      droid_screen_create_drawable(droid_dpy->screen, droid_conf->config,
+                                   droid_img->surface);
+
+   if (!droid_img->drawable) {
+      droid_dpy->backend->destroy_surface(droid_dpy->backend,
+                                          droid_img->surface);
+      free(droid_img);
+      return NULL;
+   }
+
+   droid_img->base.ClientData =
+      droid_screen_get_drawable_data(droid_dpy->screen, droid_img->drawable);
+
+   return &droid_img->base;
+}
+
+
+static EGLBoolean
+droid_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *img)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   struct droid_egl_image *droid_img = lookup_image(img);
+
+   droid_screen_destroy_drawable(droid_dpy->screen, droid_img->drawable);
+   droid_dpy->backend->destroy_surface(droid_dpy->backend, droid_img->surface);
+   free(droid_img);
+
+   return EGL_TRUE;
+}
+
+#endif /* EGL_KHR_image_base */
+
+static EGLBoolean
+droid_eglWaitClient(_EGLDriver *drv, _EGLDisplay *dpy)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   _EGLContext *ctx = _eglGetCurrentContext();
+
+   if (!ctx || !droid_drv->finish_current)
+      return EGL_TRUE;
+
+   if (!_eglIsSurfaceLinked(ctx->DrawSurface))
+      return _eglError(EGL_BAD_CURRENT_SURFACE, "eglWaitClient");
+
+   droid_drv->finish_current();
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+droid_eglWaitNative(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
+{
+   struct droid_egl_display *droid_dpy = lookup_display(dpy);
+   _EGLContext *ctx = _eglGetCurrentContext();
+   struct droid_egl_surface *droid_surf;
+
+   if (engine != EGL_CORE_NATIVE_ENGINE)
+      return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
+
+   if (!ctx) 
+      return EGL_TRUE;
+
+   if (!_eglIsSurfaceLinked(ctx->DrawSurface))
+      return _eglError(EGL_BAD_CURRENT_SURFACE, "eglWaitNative");
+
+   droid_surf = lookup_surface(ctx->DrawSurface);
+   droid_dpy->backend->swap_native_buffers(droid_dpy->backend,
+                                           droid_surf->surface);
+
+   return EGL_TRUE;
+}
+
+static void
+droid_Unload(_EGLDriver *drv)
+{
+   struct droid_egl_driver *droid_drv = lookup_driver(drv);
+   free(droid_drv);
+}
+
+static void
+droid_Log(EGLint level, const char *msg)
+{
+   switch (level) {
+   case _EGL_DEBUG:
+      LOGD(msg);
+      break;
+   case _EGL_INFO:
+      LOGI(msg);
+      break;
+   case _EGL_WARNING:
+      LOGW(msg);
+      break;
+   case _EGL_FATAL:
+      LOGE(msg);
+      break;
+   }
+}
+
+_EGLDriver *
+_eglMain(const char *args)
+{
+   struct droid_egl_driver *droid_drv = calloc(1, sizeof(*droid_drv));
+   if (!droid_drv)
+      return NULL;
+
+   _eglInitDriverFallbacks(&droid_drv->base);
+   droid_drv->base.API.Initialize = droid_eglInitialize;
+   droid_drv->base.API.Terminate = droid_eglTerminate;
+
+   droid_drv->base.API.GetProcAddress = droid_eglGetProcAddress;
+
+   droid_drv->base.API.CreateContext = droid_eglCreateContext;
+   droid_drv->base.API.DestroyContext = droid_eglDestroyContext;
+   droid_drv->base.API.MakeCurrent = droid_eglMakeCurrent;
+   droid_drv->base.API.CreateWindowSurface = droid_eglCreateWindowSurface;
+   droid_drv->base.API.DestroySurface = droid_eglDestroySurface;
+   droid_drv->base.API.SwapBuffers = droid_eglSwapBuffers;
+#if EGL_KHR_image_base
+   droid_drv->base.API.CreateImageKHR = droid_eglCreateImageKHR;
+   droid_drv->base.API.DestroyImageKHR = droid_eglDestroyImageKHR;
+#endif /* EGL_KHR_image_base */
+   droid_drv->base.API.WaitClient = droid_eglWaitClient;
+   droid_drv->base.API.WaitNative = droid_eglWaitNative;
+
+   droid_drv->base.Name = "Android/i915";
+   droid_drv->base.Unload = droid_Unload;
+
+   /* we need a way to flush commands */
+   droid_drv->flush_current =
+      (void (*)(void)) droid_eglGetProcAddress("glFlush");
+   droid_drv->finish_current =
+      (void (*)(void)) droid_eglGetProcAddress("glFinish");
+
+   _eglSetLogProc(droid_Log);
+
+   return &droid_drv->base;
+}

src/egl/drivers/xdri/egl_xdri.c

@@ -54,13 +54,18 @@
 #include "eglglobals.h"
 #include "egllog.h"
 #include "eglsurface.h"
+#include "eglimage.h"
 
+#include "EGL/internal/eglimage_dri.h"
+
+#define MAX_DEPTH 32
 #define CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 
 /** subclass of _EGLDriver */
 struct xdri_egl_driver
 {
    _EGLDriver Base;   /**< base class */
+   void (*FlushCurrentContext)(void);
 };
 
 
@@ -73,6 +78,8 @@ struct xdri_egl_display
 
    __GLXscreenConfigs *psc;
    EGLint scr;
+
+   const __GLcontextModes *imageConfigs[MAX_DEPTH + 1];
 };
 
 
@@ -98,6 +105,16 @@ struct xdri_egl_surface
 };
 
 
+/** subclass of _EGLImage */
+struct xdri_egl_image
+{
+   _EGLImage Base;   /**< base class */
+
+   Drawable pixmap;
+   __GLXDRIdrawable *driDrawable;
+};
+
+
 /** subclass of _EGLConfig */
 struct xdri_egl_config
 {
@@ -147,6 +164,14 @@ lookup_config(_EGLConfig *conf)
 }
 
 
+/** Map EGLImage handle to xdri_egl_image object */
+static INLINE struct xdri_egl_image *
+lookup_image(_EGLImage *img)
+{
+   return (struct xdri_egl_image *) img;
+}
+
+
 /** Get size of given window */
 static Status
 get_drawable_size(Display *dpy, Drawable d, uint *width, uint *height)
@@ -162,6 +187,62 @@ get_drawable_size(Display *dpy, Drawable d, uint *width, uint *height)
 }
 
 
+#if EGL_KHR_image_base
+/** Get depth of given window */
+static Status
+get_drawable_depth(Display *dpy, Drawable d, uint *depth_ret)
+{
+   Window root;
+   Status stat;
+   int xpos, ypos;
+   unsigned int w, h, bw, depth;
+   stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth);
+   *depth_ret = depth;
+   return stat;
+}
+
+
+/**
+ * The config of a pixmap must be guessed from its depth.  Do the guess once
+ * for all depths.
+ */
+static void
+find_image_configs(_EGLDisplay *dpy, const __GLcontextModes *modes)
+{
+   struct xdri_egl_display *xdri_dpy = lookup_display(dpy);
+   EGLint depth;
+
+   for (depth = 0; depth < MAX_DEPTH + 1; depth++) {
+      const __GLcontextModes *m;
+
+      for (m = modes; m; m = m->next) {
+         /* the depth of a pixmap might not include alpha */
+         if (m->rgbBits != depth && (m->rgbBits - m->alphaBits) != depth)
+            continue;
+         if (!m->visualID)
+            continue;
+
+         if (depth == 32) {
+            if (m->bindToTextureRgba) {
+               xdri_dpy->imageConfigs[depth] = m;
+               break;
+            }
+         }
+
+         if (m->bindToTextureRgb) {
+            xdri_dpy->imageConfigs[depth] = m;
+            break;
+         }
+      }
+
+      if (m)
+         _eglLog(_EGL_DEBUG, "Use mode 0x%02x for depth %d",
+                 m->visualID, depth);
+   }
+}
+#endif /* EGL_KHR_image_base */
+
+
 /**
  * Produce a set of EGL configs.
  */
@@ -275,6 +356,15 @@ xdri_eglInitialize(_EGLDriver *drv, _EGLDisplay *dpy,
                           EGL_OPENGL_ES2_BIT |
                           EGL_OPENVG_BIT);
 
+#if EGL_KHR_image_base
+   /* must be called after DriverData is set */
+   find_image_configs(dpy, psc->configs);
+
+   dpy->Extensions.KHR_image = EGL_TRUE;
+   dpy->Extensions.KHR_image_base = EGL_TRUE;
+   dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
+#endif
+
    /* we're supporting EGL 1.4 */
    *minor = 1;
    *major = 4;
@@ -406,13 +496,23 @@ static EGLBoolean
 xdri_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *d,
                     _EGLSurface *r, _EGLContext *context)
 {
+   struct xdri_egl_driver *xdri_driver = xdri_egl_driver(drv);
    struct xdri_egl_context *xdri_ctx = lookup_context(context);
    struct xdri_egl_surface *draw = lookup_surface(d);
    struct xdri_egl_surface *read = lookup_surface(r);
+   _EGLContext *old = _eglGetCurrentContext();
+
+   /* an unlinked context will be invalid after context switch */
+   if (!_eglIsContextLinked(old))
+      old = NULL;
 
    if (!_eglMakeCurrent(drv, dpy, d, r, context))
       return EGL_FALSE;
 
+   /* flush before context switch */
+   if (old && old != context && xdri_driver->FlushCurrentContext)
+      xdri_driver->FlushCurrentContext();
+
    /* the symbol is defined in libGL.so */
    _glapi_check_multithread();
 
@@ -423,12 +523,9 @@ xdri_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *d,
          return EGL_FALSE;
       }
    }
-   else {
-      _EGLContext *old = _eglGetCurrentContext();
-      if (old) {
-         xdri_ctx = lookup_context(old);
-         xdri_ctx->driContext->unbindContext(xdri_ctx->driContext);
-      }
+   else if (old) {
+      xdri_ctx = lookup_context(old);
+      xdri_ctx->driContext->unbindContext(xdri_ctx->driContext);
    }
 
    return EGL_TRUE;
@@ -524,15 +621,119 @@ xdri_eglReleaseTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 static EGLBoolean
 xdri_eglSwapBuffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
 {
+   struct xdri_egl_driver *xdri_driver = xdri_egl_driver(drv);
    struct xdri_egl_display *xdri_dpy = lookup_display(dpy);
    struct xdri_egl_surface *xdri_surf = lookup_surface(draw);
 
+   /* swapBuffers does not flush commands */
+   if (draw == _eglGetCurrentSurface(EGL_DRAW) &&
+       xdri_driver->FlushCurrentContext)
+      xdri_driver->FlushCurrentContext();
+
    xdri_dpy->psc->driScreen->swapBuffers(xdri_surf->driDrawable);
 
    return EGL_TRUE;
+} 
+
+
+#if EGL_KHR_image_base
+
+
+static _EGLImage *
+xdri_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+                       EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list)
+{
+   struct xdri_egl_display *xdri_dpy = lookup_display(dpy);
+   struct xdri_egl_image *xdri_img;
+   __DRIEGLImage *driImage;
+   EGLint err = EGL_SUCCESS;
+   const __GLcontextModes *mode;
+   uint depth;
+
+   xdri_img = CALLOC_STRUCT(xdri_egl_image);
+   if (!xdri_img) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateImageKHR");
+      return NULL;
+   }
+
+   switch (target) {
+   case EGL_NATIVE_PIXMAP_KHR:
+      if (ctx) {
+         err = EGL_BAD_PARAMETER;
+         break;
+      }
+      xdri_img->pixmap = (Pixmap) buffer;
+      break;
+   default:
+      err = EGL_BAD_PARAMETER;
+      break;
+   }
+
+   if (err != EGL_SUCCESS) {
+      _eglError(EGL_BAD_PARAMETER, "eglCreateImageKHR");
+      free(xdri_img);
+      return NULL;
+   }
+
+   if (!_eglInitImage(drv, &xdri_img->Base, attr_list)) {
+      free(xdri_img);
+      return NULL;
+   }
+   if (!get_drawable_depth(xdri_dpy->dpy, xdri_img->pixmap, &depth) ||
+       depth > MAX_DEPTH) {
+      free(xdri_img);
+      return NULL;
+   }
+   mode = xdri_dpy->imageConfigs[depth];
+   if (!mode) {
+      free(xdri_img);
+      return NULL;
+   }
+
+   driImage = CALLOC_STRUCT(__DRIEGLImageRec);
+   if (!driImage) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateImageKHR");
+      free(xdri_img);
+      return NULL;
+   }
+
+   xdri_img->driDrawable =
+      xdri_dpy->psc->driScreen->createDrawable(xdri_dpy->psc,
+                                               (XID) xdri_img->pixmap,
+                                               (GLXDrawable) xdri_img->pixmap,
+                                               mode);
+   if (!xdri_img->driDrawable) {
+      free(driImage);
+      free(xdri_img);
+      return NULL;
+   }
+
+   driImage->magic = __DRI_EGL_IMAGE_MAGIC;
+   driImage->drawable = xdri_img->driDrawable->driDrawable;
+   driImage->texture_format_rgba = (depth == 32 && mode->bindToTextureRgba);
+   driImage->level = 0;
+
+   xdri_img->Base.ClientData = (void *) driImage;
+
+   return &xdri_img->Base;
 }
 
 
+static EGLBoolean
+xdri_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *img)
+{
+   struct xdri_egl_image *xdri_img = lookup_image(img);
+
+   free(xdri_img->Base.ClientData);
+   xdri_img->driDrawable->destroyDrawable(xdri_img->driDrawable);
+   free(xdri_img);
+   return EGL_TRUE;
+}
+
+
+#endif /* EGL_KHR_image_base */
+
+
 static void
 xdri_Unload(_EGLDriver *drv)
 {
@@ -567,9 +768,17 @@ _eglMain(const char *args)
    xdri_drv->Base.API.BindTexImage = xdri_eglBindTexImage;
    xdri_drv->Base.API.ReleaseTexImage = xdri_eglReleaseTexImage;
    xdri_drv->Base.API.SwapBuffers = xdri_eglSwapBuffers;
+#if EGL_KHR_image_base
+   xdri_drv->Base.API.CreateImageKHR = xdri_eglCreateImageKHR;
+   xdri_drv->Base.API.DestroyImageKHR = xdri_eglDestroyImageKHR;
+#endif /* EGL_KHR_image_base */
 
    xdri_drv->Base.Name = "X/DRI";
    xdri_drv->Base.Unload = xdri_Unload;
 
+   /* we need a way to flush commands */
+   xdri_drv->FlushCurrentContext =
+      (void (*)(void)) xdri_eglGetProcAddress("glFlush");
+
    return &xdri_drv->Base;
 }

src/egl/main/Makefile

@@ -7,6 +7,7 @@ include $(TOP)/configs/current
 INCLUDE_DIRS = -I$(TOP)/include -I$(TOP)/src/mesa/glapi $(X11_INCLUDES)
 
 HEADERS = \
+	eglclient.h \
 	eglcompiler.h \
 	eglconfig.h \
 	eglconfigutil.h \
@@ -16,6 +17,7 @@ HEADERS = \
 	egldisplay.h \
 	egldriver.h \
 	eglglobals.h \
+	eglimage.h \
 	egllog.h \
 	eglmisc.h \
 	eglmode.h \
@@ -26,6 +28,7 @@ HEADERS = \
 
 SOURCES = \
 	eglapi.c \
+	eglclient.c \
 	eglconfig.c \
 	eglconfigutil.c \
 	eglcontext.c \
@@ -33,6 +36,7 @@ SOURCES = \
 	egldisplay.c \
 	egldriver.c \
 	eglglobals.c \
+	eglimage.c \
 	egllog.c \
 	eglmisc.c \
 	eglmode.c \

src/egl/main/eglapi.c

@@ -41,6 +41,7 @@
 #include "eglconfig.h"
 #include "eglscreen.h"
 #include "eglmode.h"
+#include "eglimage.h"
 
 
 /**
@@ -92,8 +93,8 @@ eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
       snprintf(disp->Version, sizeof(disp->Version),
                "%d.%d (%s)", major_int, minor_int, drv->Name);
 
-      /* update the global notion of supported APIs */
-      _eglGlobal.ClientAPIsMask |= disp->ClientAPIsMask;
+      /* limit to APIs supported by core */
+      disp->ClientAPIsMask &= _EGL_API_ALL_BITS;
 
       disp->Driver = drv;
    } else {
@@ -644,6 +645,10 @@ void (* EGLAPIENTRY eglGetProcAddress(const char *procname))()
       { "eglReleaseThread", (_EGLProc) eglReleaseThread },
       { "eglWaitClient", (_EGLProc) eglWaitClient },
 #endif /* EGL_VERSION_1_2 */
+#ifdef EGL_KHR_image_base
+      { "eglCreateImageKHR", (_EGLProc) eglCreateImageKHR },
+      { "eglDestroyImageKHR", (_EGLProc) eglDestroyImageKHR },
+#endif /* EGL_KHR_image_base */
       { NULL, NULL }
    };
    EGLint i;
@@ -653,6 +658,10 @@ void (* EGLAPIENTRY eglGetProcAddress(const char *procname))()
       }
    }
 
+   /* preload a driver if there isn't one */
+   if (!_eglGlobal.NumDrivers)
+      _eglPreloadDriver(NULL);
+
    /* now loop over drivers to query their procs */
    for (i = 0; i < _eglGlobal.NumDrivers; i++) {
       _EGLProc p = _eglGlobal.Drivers[i]->API.GetProcAddress(procname);
@@ -867,33 +876,7 @@ eglBindAPI(EGLenum api)
    if (!_eglIsApiValid(api))
       return _eglError(EGL_BAD_PARAMETER, "eglBindAPI");
 
-   switch (api) {
-#ifdef EGL_VERSION_1_4
-   case EGL_OPENGL_API:
-      if (_eglGlobal.ClientAPIsMask & EGL_OPENGL_BIT) {
-         t->CurrentAPIIndex = _eglConvertApiToIndex(api);
-         return EGL_TRUE;
-      }
-      _eglError(EGL_BAD_PARAMETER, "eglBindAPI");
-      return EGL_FALSE;
-#endif
-   case EGL_OPENGL_ES_API:
-      if (_eglGlobal.ClientAPIsMask & (EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT)) {
-         t->CurrentAPIIndex = _eglConvertApiToIndex(api);
-         return EGL_TRUE;
-      }
-      _eglError(EGL_BAD_PARAMETER, "eglBindAPI");
-      return EGL_FALSE;
-   case EGL_OPENVG_API:
-      if (_eglGlobal.ClientAPIsMask & EGL_OPENVG_BIT) {
-         t->CurrentAPIIndex = _eglConvertApiToIndex(api);
-         return EGL_TRUE;
-      }
-      _eglError(EGL_BAD_PARAMETER, "eglBindAPI");
-      return EGL_FALSE;
-   default:
-      return EGL_FALSE;
-   }
+   t->CurrentAPIIndex = _eglConvertApiToIndex(api);
    return EGL_TRUE;
 }
 
@@ -968,3 +951,50 @@ eglWaitClient(void)
 
 
 #endif /* EGL_VERSION_1_2 */
+
+
+#ifdef EGL_KHR_image_base
+
+
+EGLImageKHR
+eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list)
+{
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   _EGLContext *context = _eglLookupContext(ctx, disp);
+   _EGLDriver *drv;
+   _EGLImage *img;
+
+   drv = _eglCheckDisplay(disp, __FUNCTION__);
+   if (!drv)
+      return EGL_NO_IMAGE_KHR;
+   if (!context && ctx != EGL_NO_CONTEXT) {
+      _eglError(EGL_BAD_CONTEXT, __FUNCTION__);
+      return EGL_NO_IMAGE_KHR;
+   }
+
+   img = drv->API.CreateImageKHR(drv, disp, context, target, buffer, attr_list);
+   if (img)
+      return _eglLinkImage(img, disp);
+   else
+      return EGL_NO_IMAGE_KHR;
+}
+
+
+EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR image)
+{
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   _EGLImage *img = _eglLookupImage(image, disp);
+   _EGLDriver *drv;
+
+   drv = _eglCheckDisplay(disp, __FUNCTION__);
+   if (!drv)
+      return EGL_FALSE;
+   if (!img)
+      return _eglError(EGL_BAD_PARAMETER, __FUNCTION__);
+
+   _eglUnlinkImage(img);
+   return drv->API.DestroyImageKHR(drv, disp, img);
+}
+
+
+#endif /* EGL_KHR_image_base */

src/egl/main/eglapi.h

@@ -70,6 +70,11 @@ typedef _EGLSurface *(*CreatePbufferFromClientBuffer_t)(_EGLDriver *drv, _EGLDis
 #endif /* EGL_VERSION_1_2 */
 
 
+#ifdef EGL_KHR_image_base
+typedef _EGLImage *(*CreateImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list);
+typedef EGLBoolean (*DestroyImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
+#endif /* EGL_KHR_image_base */
+
 
 /**
  * The API dispatcher jumps through these functions
@@ -105,7 +110,7 @@ struct _egl_api
    WaitNative_t WaitNative;
    GetProcAddress_t GetProcAddress;
 
-   /* EGL_MESA_screen extension */
+#ifdef EGL_MESA_screen_surface
    ChooseModeMESA_t ChooseModeMESA;
    GetModesMESA_t GetModesMESA;
    GetModeAttribMESA_t GetModeAttribMESA;
@@ -118,11 +123,17 @@ struct _egl_api
    QueryScreenSurfaceMESA_t QueryScreenSurfaceMESA;
    QueryScreenModeMESA_t QueryScreenModeMESA;
    QueryModeStringMESA_t QueryModeStringMESA;
+#endif /* EGL_MESA_screen_surface */
 
 #ifdef EGL_VERSION_1_2
    WaitClient_t WaitClient;
    CreatePbufferFromClientBuffer_t CreatePbufferFromClientBuffer;
 #endif
+
+#ifdef EGL_KHR_image_base
+   CreateImageKHR_t CreateImageKHR;
+   DestroyImageKHR_t DestroyImageKHR;
+#endif /* EGL_KHR_image_base */
 };
 
 #endif /* EGLAPI_INCLUDED */

src/egl/main/eglclient.c

@@ -0,0 +1,21 @@
+/**
+ * Functions that client APIs can call.
+ */
+
+
+#include "eglcurrent.h"
+#include "egldisplay.h"
+#include "eglimage.h"
+#include "eglclient.h"
+
+
+/**
+ * Return the opaque client data of an image.
+ */
+void *
+_eglClientGetImageData(EGLImageKHR image)
+{
+   _EGLDisplay *dpy = _eglGetCurrentDisplay();
+   _EGLImage *img = _eglLookupImage(image, dpy);
+   return (img) ? img->ClientData : NULL;
+}

src/egl/main/eglclient.h

@@ -0,0 +1,12 @@
+#ifndef EGLCLIENT_INCLUDED
+#define EGLCLIENT_INCLUDED
+
+
+#include "egltypedefs.h"
+
+
+extern void *
+_eglClientGetImageData(EGLImageKHR image);
+
+
+#endif /* EGLCLIENT_INCLUDED */

src/egl/main/eglcurrent.c

@@ -9,7 +9,7 @@
 
 /* This should be kept in sync with _eglInitThreadInfo() */
 #define _EGL_THREAD_INFO_INITIALIZER \
-   { EGL_SUCCESS, { NULL }, 1 }
+   { EGL_SUCCESS, { NULL }, 0 }
 
 /* a fallback thread info to guarantee that every thread always has one */
 static _EGLThreadInfo dummy_thread = _EGL_THREAD_INFO_INITIALIZER;

src/egl/main/eglcurrent.h

@@ -4,8 +4,16 @@
 #include "egltypedefs.h"
 
 
-#define _EGL_API_NUM_INDICES \
-   (EGL_OPENGL_API - EGL_OPENGL_ES_API + 2) /* idx 0 is for EGL_NONE */
+#define _EGL_API_ALL_BITS \
+   (EGL_OPENGL_ES_BIT   | \
+    EGL_OPENVG_BIT      | \
+    EGL_OPENGL_ES2_BIT  | \
+    EGL_OPENGL_BIT)
+
+
+#define _EGL_API_FIRST_API EGL_OPENGL_ES_API
+#define _EGL_API_LAST_API EGL_OPENGL_API
+#define _EGL_API_NUM_APIS (_EGL_API_LAST_API - _EGL_API_FIRST_API + 1)
 
 
 /**
@@ -14,20 +22,19 @@
 struct _egl_thread_info
 {
    EGLint LastError;
-   _EGLContext *CurrentContexts[_EGL_API_NUM_INDICES];
+   _EGLContext *CurrentContexts[_EGL_API_NUM_APIS];
    /* use index for fast access to current context */
    EGLint CurrentAPIIndex;
 };
 
 
 /**
- * Return true if a client API enum can be converted to an index.
+ * Return true if a client API enum is recognized.
  */
 static INLINE EGLBoolean
 _eglIsApiValid(EGLenum api)
 {
-   return ((api >= EGL_OPENGL_ES_API && api <= EGL_OPENGL_API) ||
-           api == EGL_NONE);
+   return (api >= _EGL_API_FIRST_API && api <= _EGL_API_LAST_API);
 }
 
 
@@ -38,7 +45,7 @@ _eglIsApiValid(EGLenum api)
 static INLINE EGLint
 _eglConvertApiToIndex(EGLenum api)
 {
-   return (api != EGL_NONE) ? api - EGL_OPENGL_ES_API + 1 : 0;
+   return api - _EGL_API_FIRST_API;
 }
 
 
@@ -49,7 +56,7 @@ _eglConvertApiToIndex(EGLenum api)
 static INLINE EGLenum
 _eglConvertApiFromIndex(EGLint idx)
 {
-   return (idx) ? EGL_OPENGL_ES_API + idx - 1 : EGL_NONE;
+   return _EGL_API_FIRST_API + idx;
 }
 
 

src/egl/main/egldisplay.h

@@ -14,6 +14,9 @@ struct _egl_extensions
 {
    EGLBoolean MESA_screen_surface;
    EGLBoolean MESA_copy_context;
+   EGLBoolean KHR_image;
+   EGLBoolean KHR_image_base;
+   EGLBoolean KHR_image_pixmap;
 
    char String[_EGL_MAX_EXTENSIONS_LEN];
 };
@@ -50,6 +53,8 @@ struct _egl_display
    /* lists of linked contexts and surface */
    _EGLContext *ContextList;
    _EGLSurface *SurfaceList;
+
+   _EGLImage *ImageList;
 };
 
 

src/egl/main/egldriver.c

@@ -19,62 +19,74 @@
 #include "eglscreen.h"
 #include "eglstring.h"
 #include "eglsurface.h"
+#include "eglimage.h"
 
 #if defined(_EGL_PLATFORM_X)
 #include <dlfcn.h>
-#elif defined(_EGL_PLATFORM_WINDOWS)
-/* Use static linking on Windows for now */
-#define WINDOWS_STATIC_LINK
 #endif
 
+
 /**
  * Wrappers for dlopen/dlclose()
  */
 #if defined(_EGL_PLATFORM_WINDOWS)
-#ifdef WINDOWS_STATIC_LINK
-   static const char *DefaultDriverName = "Windows EGL Static Library";
-#else
-   /* XXX Need to decide how to do dynamic name lookup on Windows */
-   static const char *DefaultDriverName = "TBD";
-#endif
-   typedef HMODULE lib_handle;
 
-   static HMODULE
-   open_library(const char *filename)
-   {
-#ifdef WINDOWS_STATIC_LINK
-      return 0;
-#else
-      return LoadLibrary(filename);
-#endif
-   }
 
-   static void
-   close_library(HMODULE lib)
-   {
-#ifdef WINDOWS_STATIC_LINK
-#else
-      FreeLibrary(lib);
-#endif
-   }
+/* XXX Need to decide how to do dynamic name lookup on Windows */
+static const char DefaultDriverName[] = "TBD";
+
+typedef HMODULE lib_handle;
+
+static HMODULE
+open_library(const char *filename)
+{
+   return LoadLibrary(filename);
+}
+
+static void
+close_library(HMODULE lib)
+{
+   FreeLibrary(lib);
+}
+
 
 #elif defined(_EGL_PLATFORM_X)
-   static const char *DefaultDriverName = "egl_softpipe";
 
-   typedef void * lib_handle;
 
-   static void *
-   open_library(const char *filename)
-   {
-      return dlopen(filename, RTLD_LAZY);
-   }
+static const char DefaultDriverName[] = "egl_softpipe";
+
+typedef void * lib_handle;
+
+static void *
+open_library(const char *filename)
+{
+   return dlopen(filename, RTLD_LAZY);
+}
+
+static void
+close_library(void *lib)
+{
+   dlclose(lib);
+}
+
+#else /* _EGL_PLATFORM_NO_OS */
+
+static const char DefaultDriverName[] = "builtin";
+
+typedef void *lib_handle;
+
+static INLINE void *
+open_library(const char *filename)
+{
+   return (void *) filename;
+}
+
+static INLINE void
+close_library(void *lib)
+{
+}
+
 
-   static void
-   close_library(void *lib)
-   {
-      dlclose(lib);
-   }
-   
 #endif
 
 
@@ -95,14 +107,22 @@ _eglChooseDriver(_EGLDisplay *dpy, char **argsRet)
       path = _eglstrdup(path);
 
 #if defined(_EGL_PLATFORM_X)
-   if (!path && dpy->NativeDisplay) {
+   if (!path && dpy && dpy->NativeDisplay) {
       /* assume (wrongly!) that the native display is a display string */
       path = _eglSplitDisplayString((const char *) dpy->NativeDisplay, &args);
    }
    suffix = "so";
 #elif defined(_EGL_PLATFORM_WINDOWS)
    suffix = "dll";
-#endif /* _EGL_PLATFORM_X */
+#else /* _EGL_PLATFORM_NO_OS */
+   if (path) {
+      /* force the use of the default driver */
+      _eglLog(_EGL_DEBUG, "ignore EGL_DRIVER");
+      free(path);
+      path = NULL;
+   }
+   suffix = NULL;
+#endif
 
    if (!path)
       path = _eglstrdup(DefaultDriverName);
@@ -136,43 +156,48 @@ _eglChooseDriver(_EGLDisplay *dpy, char **argsRet)
 static _EGLMain_t
 _eglOpenLibrary(const char *driverPath, lib_handle *handle)
 {
-   _EGLMain_t mainFunc;
    lib_handle lib;
+   _EGLMain_t mainFunc = NULL;
+   const char *error = "unknown error";
 
    assert(driverPath);
 
+   _eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath);
+   lib = open_library(driverPath);
+
 #if defined(_EGL_PLATFORM_WINDOWS)
-/* Use static linking on Windows for now */
-#ifdef WINDOWS_STATIC_LINK
-   lib = 0;
-   mainFunc = (_EGLMain_t)_eglMain;
-#else
    /* XXX untested */
-   _eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath);
-   lib = open_library(driverPath);
-   if (!lib) {
-      _eglLog(_EGL_WARNING, "Could not open %s",
-              driverPath);
-      return NULL;
-   }
-   mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
-#endif
+   if (lib)
+      mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
 #elif defined(_EGL_PLATFORM_X)
-   _eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath);
-   lib = open_library(driverPath);
+   if (lib) {
+      mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain");
+      if (!mainFunc)
+         error = dlerror();
+   }
+   else {
+      error = dlerror();
+   }
+#else /* _EGL_PLATFORM_NO_OS */
+   /* must be the default driver name */
+   if (strcmp(driverPath, DefaultDriverName) == 0)
+      mainFunc = (_EGLMain_t) _eglMain;
+   else
+      error = "not builtin driver";
+#endif
+
    if (!lib) {
-      _eglLog(_EGL_WARNING, "Could not open %s (%s)",
-              driverPath, dlerror());
+      _eglLog(_EGL_WARNING, "Could not open driver %s (%s)",
+              driverPath, error);
       if (!getenv("EGL_DRIVER"))
          _eglLog(_EGL_WARNING,
                  "The driver can be overridden by setting EGL_DRIVER");
       return NULL;
    }
-   mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain");
-#endif
 
    if (!mainFunc) {
-      _eglLog(_EGL_WARNING, "_eglMain not found in %s", driverPath);
+      _eglLog(_EGL_WARNING, "_eglMain not found in %s (%s)",
+              driverPath, error);
       if (lib)
          close_library(lib);
       return NULL;
@@ -404,6 +429,11 @@ _eglInitDriverFallbacks(_EGLDriver *drv)
 #ifdef EGL_VERSION_1_2
    drv->API.CreatePbufferFromClientBuffer = _eglCreatePbufferFromClientBuffer;
 #endif /* EGL_VERSION_1_2 */
+
+#ifdef EGL_KHR_image_base
+   drv->API.CreateImageKHR = _eglCreateImageKHR;
+   drv->API.DestroyImageKHR = _eglDestroyImageKHR;
+#endif /* EGL_KHR_image_base */
 }
 
 
@@ -428,6 +458,11 @@ _eglFindAPIs(void)
    const char *es2_libname = "libGLESv2.so";
    const char *gl_libname = "libGL.so";
    const char *vg_libname = "libOpenVG.so";
+#else /* _EGL_PLATFORM_NO_OS */
+   const char *es1_libname = NULL;
+   const char *es2_libname = NULL;
+   const char *gl_libname = NULL;
+   const char *vg_libname = NULL;
 #endif
 
    if ((lib = open_library(es1_libname))) {

src/egl/main/eglglobals.c

@@ -15,13 +15,13 @@ struct _egl_global _eglGlobal =
    &_eglGlobalMutex,       /* Mutex */
    NULL,                   /* DisplayList */
    1,                      /* FreeScreenHandle */
-   0x0,                    /* ClientAPIsMask */
    0,                      /* NumDrivers */
    { NULL },               /* Drivers */
    2,                      /* NumAtExitCalls */
-   {                       /* AtExitCalls */
-      _eglFiniDisplay,
-      _eglUnloadDrivers
+   {
+      /* default AtExitCalls, called in reverse order */
+      _eglUnloadDrivers, /* always called last */
+      _eglFiniDisplay
    },
 };
 

src/egl/main/eglglobals.h

@@ -19,9 +19,6 @@ struct _egl_global
 
    EGLScreenMESA FreeScreenHandle;
 
-   /* bitmaks of supported APIs (supported by _some_ driver) */
-   EGLint ClientAPIsMask;
-
    EGLint NumDrivers;
    _EGLDriver *Drivers[10];
 

src/egl/main/eglimage.c

@@ -0,0 +1,104 @@
+#include <assert.h>
+
+#include "eglimage.h"
+#include "egldisplay.h"
+
+EGLBoolean
+_eglInitImage(_EGLDriver *drv, _EGLImage *img, const EGLint *attrib_list)
+{
+   EGLint i;
+
+   img->Preserved = EGL_FALSE;
+
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      switch (attrib_list[i]) {
+      case EGL_IMAGE_PRESERVED_KHR:
+         i++;
+         img->Preserved = attrib_list[i];
+         break;
+      default:
+         /* not an error */
+         break;
+      }
+   }
+
+   return EGL_TRUE;
+}
+
+
+_EGLImage *
+_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+                   EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list)
+{
+   /* driver should override this function */
+   return NULL;
+}
+
+
+EGLBoolean
+_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image)
+{
+   /* driver should override this function */
+   return EGL_FALSE;
+}
+
+
+EGLImageKHR
+_eglLinkImage(_EGLImage *img, _EGLDisplay *dpy)
+{
+   img->Display = dpy;
+   img->Next = dpy->ImageList;
+   dpy->ImageList = img;
+   return (EGLImageKHR) img;
+}
+
+
+void
+_eglUnlinkImage(_EGLImage *img)
+{
+   _EGLImage *prev;
+
+   prev = img->Display->ImageList;
+   if (prev != img) {
+      while (prev) {
+         if (prev->Next == img)
+            break;
+         prev = prev->Next;
+      }
+      assert(prev);
+      prev->Next = img->Next;
+   }
+   else {
+      img->Display->ImageList = img->Next;
+   }
+
+   img->Next = NULL;
+   img->Display = NULL;
+}
+
+
+#ifndef _EGL_SKIP_HANDLE_CHECK
+
+
+/**
+ * Return EGL_TRUE if the given handle is a valid handle to an image.
+ */
+EGLBoolean
+_eglCheckImageHandle(EGLImageKHR img, _EGLDisplay *dpy)
+{
+   _EGLImage *cur = NULL;
+
+   if (dpy)
+      cur = dpy->ImageList;
+   while (cur) {
+      if (cur == (_EGLImage *) img) {
+         assert(cur->Display == dpy);
+         break;
+      }
+      cur = cur->Next;
+   }
+   return (cur != NULL);
+}
+
+
+#endif /* _EGL_SKIP_HANDLE_CHECK */

src/egl/main/eglimage.h

@@ -0,0 +1,93 @@
+#ifndef EGLIMAGE_INCLUDED
+#define EGLIMAGE_INCLUDED
+
+
+#include "egltypedefs.h"
+
+
+/**
+ * "Base" class for device driver images.
+ */
+struct _egl_image
+{
+   /* Client data that client APIs and the driver agree on */
+   void *ClientData;
+
+   /* Managed by EGLDisplay for linking */
+   _EGLDisplay *Display;
+   _EGLImage *Next;
+
+   EGLBoolean Preserved;
+};
+
+
+extern EGLBoolean
+_eglInitImage(_EGLDriver *drv, _EGLImage *img, const EGLint *attrib_list);
+
+
+extern _EGLImage *
+_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+                   EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list);
+
+
+extern EGLBoolean
+_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
+
+
+extern EGLImageKHR
+_eglLinkImage(_EGLImage *img, _EGLDisplay *dpy);
+
+
+extern void
+_eglUnlinkImage(_EGLImage *img);
+
+
+#ifndef _EGL_SKIP_HANDLE_CHECK
+
+
+extern EGLBoolean
+_eglCheckImageHandle(EGLImageKHR img, _EGLDisplay *dpy);
+
+
+#else
+
+
+/**
+ * Perform a quick check on the handle.
+ */
+static INLINE EGLBoolean
+_eglCheckImageHandle(EGLImageKHR img, _EGLDisplay *dpy)
+{
+   _EGLImage *i = (_EGLImage *) img;
+   return (dpy && i && i->Display == dpy);
+}
+
+
+#endif
+
+
+/**
+ * Lookup a handle to find the linked image.
+ * Return NULL if the handle has no corresponding linked image.
+ */
+static INLINE _EGLImage *
+_eglLookupImage(EGLImageKHR image, _EGLDisplay *dpy)
+{
+   _EGLImage *img = (_EGLImage *) image;
+   if (!_eglCheckImageHandle(img, dpy))
+      img = NULL;
+   return img;
+}
+
+
+/**
+ * Return the handle of a linked image.
+ */
+static INLINE EGLImageKHR
+_eglGetImageHandle(_EGLImage *img)
+{
+   return (EGLImageKHR) ((img && img->Display) ? img : EGL_NO_IMAGE_KHR);
+}
+
+
+#endif /* EGLIMAGE_INCLUDED */

src/egl/main/egllog.c

@@ -9,51 +9,140 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
 #include "egllog.h"
+#include "eglmutex.h"
 
 #define MAXSTRING 1000
-#define FALLBACK_LOG_LEVEL      _EGL_WARNING
-#define FALLBACK_LOG_LEVEL_STR  "warning"
-
-static EGLint ReportingLevel = -1;
+#define FALLBACK_LOG_LEVEL _EGL_WARNING
 
 
-static void
-log_level_initialize(void)
+static struct {
+   _EGLMutex mutex;
+
+   EGLBoolean initialized;
+   EGLint level;
+   _EGLLogProc logger;
+   EGLint num_messages;
+} logging = {
+   _EGL_MUTEX_INITIALIZER,
+   EGL_FALSE,
+   FALLBACK_LOG_LEVEL,
+   NULL,
+   0
+};
+
+static const char *level_strings[] = {
+   /* the order is important */
+   "fatal",
+   "warning",
+   "info",
+   "debug",
+   NULL
+};
+
+
+/**
+ * Set the function to be called when there is a message to log.
+ * Note that the function will be called with an internal lock held.
+ * Recursive logging is not allowed.
+ */
+void
+_eglSetLogProc(_EGLLogProc logger)
 {
-#if defined(_EGL_PLATFORM_X)  
-   char *log_env = getenv("EGL_LOG_LEVEL");
-#else
-   char *log_env = NULL;
-#endif
+   EGLint num_messages = 0;
 
-   if (log_env == NULL) {
-      ReportingLevel = FALLBACK_LOG_LEVEL;
+   _eglLockMutex(&logging.mutex);
+
+   if (logging.logger != logger) {
+      logging.logger = logger;
+
+      num_messages = logging.num_messages;
+      logging.num_messages = 0;
    }
-   else if (strcasecmp(log_env, "fatal") == 0) {
-      ReportingLevel = _EGL_FATAL;
-   }
-   else if (strcasecmp(log_env, "warning") == 0) {
-      ReportingLevel = _EGL_WARNING;
-   }
-   else if (strcasecmp(log_env, "info") == 0) {
-      ReportingLevel = _EGL_INFO;
-   }
-   else if (strcasecmp(log_env, "debug") == 0) {
-      ReportingLevel = _EGL_DEBUG;
-   }
-   else {
-      fprintf(stderr, "Unrecognized EGL_LOG_LEVEL environment variable value. "
-              "Expected one of \"fatal\", \"warning\", \"info\", \"debug\". "
-              "Got \"%s\". Falling back to \"%s\".\n",
-              log_env, FALLBACK_LOG_LEVEL_STR);
-      ReportingLevel = FALLBACK_LOG_LEVEL;
+
+   _eglUnlockMutex(&logging.mutex);
+
+   if (num_messages)
+      _eglLog(_EGL_DEBUG,
+              "New logger installed. "
+              "Messages before the new logger might not be available.");
+}
+
+
+/**
+ * Set the log reporting level.
+ */
+void
+_eglSetLogLevel(EGLint level)
+{
+   switch (level) {
+   case _EGL_FATAL:
+   case _EGL_WARNING:
+   case _EGL_INFO:
+   case _EGL_DEBUG:
+      _eglLockMutex(&logging.mutex);
+      logging.level = level;
+      _eglUnlockMutex(&logging.mutex);
+      break;
+   default:
+      break;
    }
 }
 
 
 /**
- * Log a message to stderr.
+ * The default logger.  It prints the message to stderr.
+ */
+static void
+_eglDefaultLogger(EGLint level, const char *msg)
+{
+   fprintf(stderr, "libEGL %s: %s\n", level_strings[level], msg);
+}
+
+
+/**
+ * Initialize the logging facility.
+ */
+static void
+_eglInitLogger(void)
+{
+   const char *log_env;
+   EGLint i, level = -1;
+
+   if (logging.initialized)
+      return;
+
+   log_env = getenv("EGL_LOG_LEVEL");
+   if (log_env) {
+      for (i = 0; level_strings[i]; i++) {
+         if (strcasecmp(log_env, level_strings[i]) == 0) {
+            level = i;
+            break;
+         }
+      }
+   }
+   else {
+      level = FALLBACK_LOG_LEVEL;
+   }
+
+   logging.logger = _eglDefaultLogger;
+   logging.level = (level >= 0) ? level : FALLBACK_LOG_LEVEL;
+   logging.initialized = EGL_TRUE;
+
+   /* it is fine to call _eglLog now */
+   if (log_env && level < 0) {
+      _eglLog(_EGL_WARNING,
+              "Unrecognized EGL_LOG_LEVEL environment variable value. "
+              "Expected one of \"fatal\", \"warning\", \"info\", \"debug\". "
+              "Got \"%s\". Falling back to \"%s\".",
+              log_env, level_strings[FALLBACK_LOG_LEVEL]);
+   }
+}
+
+
+/**
+ * Log a message with message logger.
  * \param level one of _EGL_FATAL, _EGL_WARNING, _EGL_INFO, _EGL_DEBUG.
  */
 void
@@ -61,40 +150,26 @@ _eglLog(EGLint level, const char *fmtStr, ...)
 {
    va_list args;
    char msg[MAXSTRING];
-   const char *levelStr;
-   static int log_level_initialized = 0;
 
-   if (!log_level_initialized) {
-      log_level_initialize();
-      log_level_initialized = 1;
-   }
+   /* one-time initialization; a little race here is fine */
+   if (!logging.initialized)
+      _eglInitLogger();
+   if (level > logging.level || level < 0)
+      return;
 
-   if (level <= ReportingLevel) {
-      switch (level) {
-      case _EGL_FATAL:
-         levelStr = "Fatal";
-         break;
-      case _EGL_WARNING:
-         levelStr = "Warning";
-         break;
-      case _EGL_INFO:
-         levelStr = "Info";
-         break;
-      case _EGL_DEBUG:
-         levelStr = "Debug";
-         break;
-      default:
-         levelStr = "";
-      }
+   _eglLockMutex(&logging.mutex);
 
+   if (logging.logger) {
       va_start(args, fmtStr);
       vsnprintf(msg, MAXSTRING, fmtStr, args);
       va_end(args);
 
-      fprintf(stderr, "libEGL %s: %s\n", levelStr, msg);
-
-      if (level == _EGL_FATAL) {
-         exit(1); /* or abort()? */
-      }
+      logging.logger(level, msg);
+      logging.num_messages++;
    }
+
+   _eglUnlockMutex(&logging.mutex);
+
+   if (level == _EGL_FATAL)
+      exit(1); /* or abort()? */
 }

src/egl/main/egllog.h

@@ -9,6 +9,17 @@
 #define _EGL_DEBUG   3   /* useful info for debugging */
 
 
+typedef void (*_EGLLogProc)(EGLint level, const char *msg);
+
+
+extern void
+_eglSetLogProc(_EGLLogProc logger);
+
+
+extern void
+_eglSetLogLevel(EGLint level);
+
+
 extern void
 _eglLog(EGLint level, const char *fmtStr, ...);
 

src/egl/main/eglmisc.c

@@ -54,6 +54,12 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
       strcat(exts, "EGL_MESA_screen_surface ");
    if (dpy->Extensions.MESA_copy_context)
       strcat(exts, "EGL_MESA_copy_context ");
+   if (dpy->Extensions.KHR_image)
+      strcat(exts, "EGL_KHR_image ");
+   if (dpy->Extensions.KHR_image_base)
+      strcat(exts, "EGL_KHR_image_base ");
+   if (dpy->Extensions.KHR_image_pixmap)
+      strcat(exts, "EGL_KHR_image_pixmap ");
    assert(strlen(exts) < _EGL_MAX_EXTENSIONS_LEN);
 }
 

src/egl/main/egltypedefs.h

@@ -6,6 +6,62 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
+#ifndef EGL_MESA_screen_surface
+#define EGL_MESA_screen_surface 1
+
+#define EGL_BAD_SCREEN_MESA                    0x4000
+#define EGL_BAD_MODE_MESA                      0x4001
+#define EGL_SCREEN_COUNT_MESA                  0x4002
+#define EGL_SCREEN_POSITION_MESA               0x4003
+#define EGL_SCREEN_POSITION_GRANULARITY_MESA   0x4004
+#define EGL_MODE_ID_MESA                       0x4005
+#define EGL_REFRESH_RATE_MESA                  0x4006
+#define EGL_OPTIMAL_MESA                       0x4007
+#define EGL_INTERLACED_MESA                    0x4008
+#define EGL_SCREEN_BIT_MESA                    0x08
+
+typedef uint32_t EGLScreenMESA;
+typedef uint32_t EGLModeMESA;
+
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglChooseModeMESA(EGLDisplay dpy, EGLScreenMESA screen, const EGLint *attrib_list, EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes);
+EGLAPI EGLBoolean EGLAPIENTRY eglGetModesMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes);
+EGLAPI EGLBoolean EGLAPIENTRY eglGetModeAttribMESA(EGLDisplay dpy, EGLModeMESA mode, EGLint attribute, EGLint *value);
+EGLAPI EGLBoolean EGLAPIENTRY eglGetScreensMESA(EGLDisplay dpy, EGLScreenMESA *screens, EGLint max_screens, EGLint *num_screens);
+EGLAPI EGLSurface EGLAPIENTRY eglCreateScreenSurfaceMESA(EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list);
+EGLAPI EGLBoolean EGLAPIENTRY eglShowScreenSurfaceMESA(EGLDisplay dpy, EGLint screen, EGLSurface surface, EGLModeMESA mode);
+EGLAPI EGLBoolean EGLAPIENTRY eglScreenPositionMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLint x, EGLint y);
+EGLAPI EGLBoolean EGLAPIENTRY eglQueryScreenMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLint attribute, EGLint *value);
+EGLAPI EGLBoolean EGLAPIENTRY eglQueryScreenSurfaceMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLSurface *surface);
+EGLAPI EGLBoolean EGLAPIENTRY eglQueryScreenModeMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *mode);
+EGLAPI const char * EGLAPIENTRY eglQueryModeStringMESA(EGLDisplay dpy, EGLModeMESA mode);
+#endif /* EGL_EGLEXT_PROTOTYPES */
+
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLCHOOSEMODEMESA) (EGLDisplay dpy, EGLScreenMESA screen, const EGLint *attrib_list, EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGETMODESMESA) (EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGetModeATTRIBMESA) (EGLDisplay dpy, EGLModeMESA mode, EGLint attribute, EGLint *value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLGETSCRREENSMESA) (EGLDisplay dpy, EGLScreenMESA *screens, EGLint max_screens, EGLint *num_screens);
+typedef EGLSurface (EGLAPIENTRYP PFNEGLCREATESCREENSURFACEMESA) (EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSHOWSCREENSURFACEMESA) (EGLDisplay dpy, EGLint screen, EGLSurface surface, EGLModeMESA mode);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLSCREENPOSIITONMESA) (EGLDisplay dpy, EGLScreenMESA screen, EGLint x, EGLint y);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSCREENMESA) (EGLDisplay dpy, EGLScreenMESA screen, EGLint attribute, EGLint *value);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSCREENSURFACEMESA) (EGLDisplay dpy, EGLScreenMESA screen, EGLSurface *surface);
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYSCREENMODEMESA) (EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *mode);
+typedef const char * (EGLAPIENTRYP PFNEGLQUERYMODESTRINGMESA) (EGLDisplay dpy, EGLModeMESA mode);
+
+#endif /* EGL_MESA_screen_surface */
+
+#ifndef EGL_MESA_copy_context
+#define EGL_MESA_copy_context 1
+
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglCopyContextMESA(EGLDisplay dpy, EGLContext source, EGLContext dest, EGLint mask);
+#endif /* EGL_EGLEXT_PROTOTYPES */
+
+typedef EGLBoolean (EGLAPIENTRYP PFNEGLCOPYCONTEXTMESA) (EGLDisplay dpy, EGLContext source, EGLContext dest, EGLint mask);
+
+#endif /* EGL_MESA_copy_context */
+
 #include "eglcompiler.h"
 
 typedef struct _egl_api _EGLAPI;
@@ -28,6 +84,8 @@ typedef struct _egl_surface _EGLSurface;
 
 typedef struct _egl_thread_info _EGLThreadInfo;
 
+typedef struct _egl_image _EGLImage;
+
 
 typedef _EGLDriver *(*_EGLMain_t)(const char *args);
 

src/gallium/auxiliary/util/u_fifo.h

@@ -0,0 +1,94 @@
+/**************************************************************************
+ *
+ * Copyright © 2009 Jakob Bornecrantz
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef U_FIFO_H
+#define U_FIFO_H
+
+#include "util/u_memory.h"
+
+struct util_fifo
+{
+   size_t head;
+   size_t tail;
+   size_t num;
+   size_t size;
+};
+
+static INLINE struct util_fifo *
+u_fifo_create(size_t size)
+{
+   struct util_fifo *fifo;
+   fifo = MALLOC(sizeof(*fifo) + size * sizeof(void*));
+
+   fifo->head = 0;
+   fifo->tail = 0;
+   fifo->num = 0;
+   fifo->size = size;
+
+   return fifo;
+}
+
+static INLINE boolean
+u_fifo_add(struct util_fifo *fifo, void *ptr)
+{
+   void **array = (void**)&fifo[1];
+   if (fifo->num >= fifo->size)
+      return FALSE;
+
+   if (++fifo->head >= fifo->size)
+      fifo->head = 0;
+
+   array[fifo->head] = ptr;
+
+   ++fifo->num;
+
+   return TRUE;
+}
+
+static INLINE boolean
+u_fifo_pop(struct util_fifo *fifo, void **ptr)
+{
+   void **array = (void**)&fifo[1];
+
+   if (!fifo->num)
+      return FALSE;
+
+   if (++fifo->tail >= fifo->size)
+      fifo->tail = 0;
+
+   *ptr = array[fifo->tail];
+
+   ++fifo->num;
+
+   return TRUE;
+}
+
+static INLINE void
+u_fifo_destroy(struct util_fifo *fifo)
+{
+   FREE(fifo);
+}
+
+#endif

src/gallium/auxiliary/util/u_format.csv

@@ -14,10 +14,10 @@ PIPE_FORMAT_L16_UNORM             , arith , 1, 1, un16,     ,     ,     , xxx1,
 PIPE_FORMAT_Z16_UNORM             , array , 1, 1, un16,     ,     ,     , x___, zs 
 PIPE_FORMAT_Z32_UNORM             , array , 1, 1, un32,     ,     ,     , x___, zs 
 PIPE_FORMAT_Z32_FLOAT             , array , 1, 1, f32 ,     ,     ,     , x___, zs 
-PIPE_FORMAT_S8Z24_UNORM           , arith , 1, 1, un8 , un24,     ,     , yx__, zs 
-PIPE_FORMAT_Z24S8_UNORM           , arith , 1, 1, un24, un8 ,     ,     , xy__, zs 
-PIPE_FORMAT_X8Z24_UNORM           , arith , 1, 1, un8 , un24,     ,     , y___, zs 
-PIPE_FORMAT_Z24X8_UNORM           , arith , 1, 1, un24, un8 ,     ,     , x___, zs 
+PIPE_FORMAT_S8Z24_UNORM           , arith , 1, 1, un24, un8 ,     ,     , xy__, zs 
+PIPE_FORMAT_Z24S8_UNORM           , arith , 1, 1, un8 , un24,     ,     , yx__, zs 
+PIPE_FORMAT_X8Z24_UNORM           , arith , 1, 1, un24, un8 ,     ,     , x___, zs 
+PIPE_FORMAT_Z24X8_UNORM           , arith , 1, 1, un8 , un24,     ,     , y___, zs 
 PIPE_FORMAT_S8_UNORM              , array , 1, 1, un8 ,     ,     ,     , _x__, zs 
 PIPE_FORMAT_R64_FLOAT             , array , 1, 1, f64 ,     ,     ,     , x001, rgb
 PIPE_FORMAT_R64G64_FLOAT          , array , 1, 1, f64 , f64 ,     ,     , xy01, rgb

src/gallium/auxiliary/util/u_math.h

@@ -340,6 +340,16 @@ util_is_inf_or_nan(float x)
 }
 
 
+/**
+ * Test whether x is a power of two.
+ */
+static INLINE boolean
+util_is_pot(unsigned x)
+{
+   return (x & (x - 1)) == 0;
+}
+
+
 /**
  * Find first bit set in word.  Least significant bit is 1.
  * Return 0 if no bits set.

src/gallium/auxiliary/util/u_simple_screen.c

@@ -52,8 +52,7 @@ pass_user_buffer_create(struct pipe_screen *screen,
                         unsigned bytes)
 {
    struct pipe_buffer *buffer =
-      screen->winsys->user_buffer_create(screen->winsys,
-                                             ptr, bytes);
+      screen->winsys->user_buffer_create(screen->winsys, ptr, bytes);
 
    buffer->screen = screen;
 
@@ -69,9 +68,8 @@ pass_surface_buffer_create(struct pipe_screen *screen,
                            unsigned *stride)
 {
    struct pipe_buffer *buffer =
-      screen->winsys->surface_buffer_create(screen->winsys,
-                                                width, height,
-                                                format, usage, tex_usage, stride);
+      screen->winsys->surface_buffer_create(screen->winsys, width, height,
+                                            format, usage, tex_usage, stride);
 
    buffer->screen = screen;
 
@@ -83,8 +81,7 @@ pass_buffer_map(struct pipe_screen *screen,
                 struct pipe_buffer *buf,
                 unsigned usage)
 {
-   return screen->winsys->buffer_map(screen->winsys,
-                                     buf, usage);
+   return screen->winsys->buffer_map(screen->winsys, buf, usage);
 }
 
 static void
@@ -106,8 +103,7 @@ pass_flush_frontbuffer(struct pipe_screen *screen,
                        struct pipe_surface *surf,
                        void *context_private)
 {
-   screen->winsys->flush_frontbuffer(screen->winsys,
-                                     surf, context_private);
+   screen->winsys->flush_frontbuffer(screen->winsys, surf, context_private);
 }
 
 static void
@@ -115,8 +111,7 @@ pass_fence_reference(struct pipe_screen *screen,
                      struct pipe_fence_handle **ptr,
                      struct pipe_fence_handle *fence)
 {
-   screen->winsys->fence_reference(screen->winsys,
-                                   ptr, fence);
+   screen->winsys->fence_reference(screen->winsys, ptr, fence);
 }
 
 static int
@@ -124,8 +119,7 @@ pass_fence_signalled(struct pipe_screen *screen,
                      struct pipe_fence_handle *fence,
                      unsigned flag)
 {
-   return screen->winsys->fence_signalled(screen->winsys,
-                                          fence, flag);
+   return screen->winsys->fence_signalled(screen->winsys, fence, flag);
 }
 
 static int
@@ -133,11 +127,11 @@ pass_fence_finish(struct pipe_screen *screen,
                   struct pipe_fence_handle *fence,
                   unsigned flag)
 {
-   return screen->winsys->fence_finish(screen->winsys,
-                                       fence, flag);
+   return screen->winsys->fence_finish(screen->winsys, fence, flag);
 }
 
-void u_simple_screen_init(struct pipe_screen *screen)
+void
+u_simple_screen_init(struct pipe_screen *screen)
 {
    screen->buffer_create = pass_buffer_create;
    screen->user_buffer_create = pass_user_buffer_create;
@@ -152,7 +146,8 @@ void u_simple_screen_init(struct pipe_screen *screen)
    screen->fence_finish = pass_fence_finish;
 }
 
-const char* u_simple_screen_winsys_name(struct pipe_screen *screen)
+const char *
+u_simple_screen_winsys_name(struct pipe_screen *screen)
 {
    return screen->winsys->get_name(screen->winsys);
 }

src/gallium/auxiliary/util/u_simple_shaders.c

@@ -34,14 +34,8 @@
 
 
 #include "pipe/p_context.h"
-#include "util/u_debug.h"
-#include "pipe/p_defines.h"
-#include "pipe/p_screen.h"
 #include "pipe/p_shader_tokens.h"
-
-#include "util/u_memory.h"
 #include "util/u_simple_shaders.h"
-
 #include "tgsi/tgsi_ureg.h"
 
 

src/gallium/auxiliary/util/u_tile.c

@@ -170,7 +170,7 @@ x8r8g8b8_get_tile_rgba(const unsigned *src,
          pRow[0] = ubyte_to_float((pixel >> 16) & 0xff);
          pRow[1] = ubyte_to_float((pixel >>  8) & 0xff);
          pRow[2] = ubyte_to_float((pixel >>  0) & 0xff);
-         pRow[3] = ubyte_to_float(0xff);
+         pRow[3] = 1.0F;
       }
       p += dst_stride;
    }
@@ -394,6 +394,52 @@ r5g6b5_put_tile_rgba(ushort *dst,
 
 
 
+/*** PIPE_FORMAT_R8G8B8_UNORM ***/
+
+static void
+r8g8b8_get_tile_rgba(const ubyte *src,
+                     unsigned w, unsigned h,
+                     float *p,
+                     unsigned dst_stride)
+{
+   unsigned i, j;
+
+   for (i = 0; i < h; i++) {
+      float *pRow = p;
+      for (j = 0; j < w; j++, pRow += 4) {
+         pRow[0] = ubyte_to_float(src[0]);
+         pRow[1] = ubyte_to_float(src[1]);
+         pRow[2] = ubyte_to_float(src[2]);
+         pRow[3] = 1.0f;
+         src += 3;
+      }
+      p += dst_stride;
+   }
+}
+
+
+static void
+r8g8b8_put_tile_rgba(ubyte *dst,
+                     unsigned w, unsigned h,
+                     const float *p,
+                     unsigned src_stride)
+{
+   unsigned i, j;
+
+   for (i = 0; i < h; i++) {
+      const float *pRow = p;
+      for (j = 0; j < w; j++, pRow += 4) {
+         dst[0] = float_to_ubyte(pRow[0]);
+         dst[1] = float_to_ubyte(pRow[1]);
+         dst[2] = float_to_ubyte(pRow[2]);
+         dst += 3;
+      }
+      p += src_stride;
+   }
+}
+
+
+
 /*** PIPE_FORMAT_Z16_UNORM ***/
 
 /**
@@ -1106,6 +1152,9 @@ pipe_tile_raw_to_rgba(enum pipe_format format,
    case PIPE_FORMAT_R5G6B5_UNORM:
       r5g6b5_get_tile_rgba((ushort *) src, w, h, dst, dst_stride);
       break;
+   case PIPE_FORMAT_R8G8B8_UNORM:
+      r8g8b8_get_tile_rgba((ubyte *) src, w, h, dst, dst_stride);
+      break;
    case PIPE_FORMAT_L8_UNORM:
       l8_get_tile_rgba((ubyte *) src, w, h, dst, dst_stride);
       break;
@@ -1222,6 +1271,9 @@ pipe_put_tile_rgba(struct pipe_transfer *pt,
    case PIPE_FORMAT_R5G6B5_UNORM:
       r5g6b5_put_tile_rgba((ushort *) packed, w, h, p, src_stride);
       break;
+   case PIPE_FORMAT_R8G8B8_UNORM:
+      r8g8b8_put_tile_rgba((ubyte *) packed, w, h, p, src_stride);
+      break;
    case PIPE_FORMAT_R8G8B8A8_UNORM:
       assert(0);
       break;

src/gallium/drivers/i915simple/i915_prim_vbuf.c

@@ -44,6 +44,7 @@
 #include "pipe/p_inlines.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
+#include "util/u_fifo.h"
 
 #include "i915_context.h"
 #include "i915_reg.h"
@@ -76,8 +77,13 @@ struct i915_vbuf_render {
    size_t vbo_size;
    size_t vbo_offset;
    void *vbo_ptr;
-   size_t vbo_alloc_size;
    size_t vbo_max_used;
+
+   /* stuff for the pool */
+   struct util_fifo *pool_fifo;
+   unsigned pool_used;
+   unsigned pool_buffer_size;
+   boolean pool_not_used;
 };
 
 
@@ -105,6 +111,55 @@ i915_vbuf_render_get_vertex_info(struct vbuf_render *render)
    return &i915->current.vertex_info;
 }
 
+static boolean
+i915_vbuf_render_reserve(struct i915_vbuf_render *i915_render, size_t size)
+{
+   struct i915_context *i915 = i915_render->i915;
+
+   if (i915_render->vbo_size < size + i915_render->vbo_offset)
+      return FALSE;
+
+   if (i915->vbo_flushed)
+      return FALSE;
+
+   return TRUE;
+}
+
+static void
+i915_vbuf_render_new_buf(struct i915_vbuf_render *i915_render, size_t size)
+{
+   struct i915_context *i915 = i915_render->i915;
+   struct intel_winsys *iws = i915->iws;
+
+   if (i915_render->vbo) {
+      if (i915_render->pool_not_used)
+         iws->buffer_destroy(iws, i915_render->vbo);
+      else
+         u_fifo_add(i915_render->pool_fifo, i915_render->vbo);
+      i915_render->vbo = NULL;
+   }
+
+   i915->vbo_flushed = 0;
+
+   i915_render->vbo_size = MAX2(size, i915_render->pool_buffer_size);
+   i915_render->vbo_offset = 0;
+
+   if (i915_render->vbo_size != i915_render->pool_buffer_size) {
+      i915_render->pool_not_used = TRUE;
+      i915_render->vbo = iws->buffer_create(iws, i915_render->vbo_size, 64,
+            INTEL_NEW_VERTEX);
+   } else {
+      i915_render->pool_not_used = FALSE;
+
+      if (i915_render->pool_used >= 2) {
+         FLUSH_BATCH(NULL);
+         i915->vbo_flushed = 0;
+         i915_render->pool_used = 0;
+      }
+      u_fifo_pop(i915_render->pool_fifo, (void**)&i915_render->vbo);
+   }
+}
+
 static boolean
 i915_vbuf_render_allocate_vertices(struct vbuf_render *render,
                                    ushort vertex_size,
@@ -112,27 +167,17 @@ i915_vbuf_render_allocate_vertices(struct vbuf_render *render,
 {
    struct i915_vbuf_render *i915_render = i915_vbuf_render(render);
    struct i915_context *i915 = i915_render->i915;
-   struct intel_winsys *iws = i915->iws;
    size_t size = (size_t)vertex_size * (size_t)nr_vertices;
 
    /* FIXME: handle failure */
    assert(!i915->vbo);
 
-   if (i915_render->vbo_size > size + i915_render->vbo_offset && !i915->vbo_flushed) {
-   } else {
-      i915->vbo_flushed = 0;
-      if (i915_render->vbo) {
-         iws->buffer_destroy(iws, i915_render->vbo);
-         i915_render->vbo = NULL;
-      }
-   }
+   if (!i915_vbuf_render_reserve(i915_render, size)) {
 
-   if (!i915_render->vbo) {
-      i915_render->vbo_size = MAX2(size, i915_render->vbo_alloc_size);
-      i915_render->vbo_offset = 0;
-      i915_render->vbo = iws->buffer_create(iws, i915_render->vbo_size, 64,
-                                            INTEL_NEW_VERTEX);
+      if (i915->vbo_flushed)
+         i915_render->pool_used = 0;
 
+      i915_vbuf_render_new_buf(i915_render, size);
    }
 
    i915_render->vertex_size = vertex_size;
@@ -504,6 +549,7 @@ i915_vbuf_render_create(struct i915_context *i915)
 {
    struct i915_vbuf_render *i915_render = CALLOC_STRUCT(i915_vbuf_render);
    struct intel_winsys *iws = i915->iws;
+   int i;
 
    i915_render->i915 = i915;
    
@@ -524,14 +570,24 @@ i915_vbuf_render_create(struct i915_context *i915)
    i915_render->base.release_vertices = i915_vbuf_render_release_vertices;
    i915_render->base.destroy = i915_vbuf_render_destroy;
 
-   i915_render->vbo_alloc_size = 128 * 4096;
-   i915_render->vbo_size = i915_render->vbo_alloc_size;
+
+   i915_render->vbo = NULL;
+   i915_render->vbo_size = 0;
    i915_render->vbo_offset = 0;
-   i915_render->vbo = iws->buffer_create(iws, i915_render->vbo_size, 64,
-                                         INTEL_NEW_VERTEX);
+
+   i915_render->pool_used = FALSE;
+   i915_render->pool_buffer_size = 128 * 4096;
+   i915_render->pool_fifo = u_fifo_create(6);
+   for (i = 0; i < 6; i++)
+      u_fifo_add(i915_render->pool_fifo,
+                 iws->buffer_create(iws, i915_render->pool_buffer_size, 64,
+                                    INTEL_NEW_VERTEX));
+
+#if 0
    /* TODO JB: is this realy needed? */
    i915_render->vbo_ptr = iws->buffer_map(iws, i915_render->vbo, TRUE);
    iws->buffer_unmap(iws, i915_render->vbo);
+#endif
 
    return &i915_render->base;
 }

src/gallium/drivers/i915simple/intel_winsys.h

@@ -150,6 +150,17 @@ struct intel_winsys {
    void (*buffer_unmap)(struct intel_winsys *iws,
                         struct intel_buffer *buffer);
 
+   /**
+    * Write to a buffer.
+    *
+    * Arguments follows pwrite(2)
+    */
+   int (*buffer_write)(struct intel_winsys *iws,
+                       struct intel_buffer *dst,
+                       const void *src,
+                       size_t size,
+                       size_t offset);
+
    void (*buffer_destroy)(struct intel_winsys *iws,
                           struct intel_buffer *buffer);
    /*@}*/

src/gallium/drivers/llvmpipe/Makefile

@@ -15,9 +15,11 @@ C_SOURCES = \
 	lp_bld_depth.c \
 	lp_bld_flow.c \
 	lp_bld_format_aos.c \
+	lp_bld_format_soa.c \
 	lp_bld_interp.c \
 	lp_bld_intr.c \
 	lp_bld_logic.c \
+	lp_bld_sample_soa.c \
 	lp_bld_swizzle.c \
 	lp_bld_struct.c \
 	lp_bld_tgsi_soa.c \
@@ -44,7 +46,8 @@ C_SOURCES = \
 	lp_state_vs.c \
 	lp_surface.c \
 	lp_tex_cache.c \
-	lp_tex_sample.c \
+	lp_tex_sample_c.c \
+	lp_tex_sample_llvm.c \
 	lp_texture.c \
 	lp_tile_cache.c \
 	lp_tile_soa.c

src/gallium/drivers/llvmpipe/README

@@ -8,13 +8,16 @@ Done so far is:
 
  - the whole fragment pipeline is code generated in a single function
  
+   - input interpolation
+   
    - depth testing
  
+   - texture sampling (not all state/formats are supported) 
+   
    - fragment shader TGSI translation
      - same level of support as the TGSI SSE2 exec machine, with the exception
        we don't fallback to TGSI interpretation when an unsupported opcode is
        found, but just ignore it
-     - texture sampling via an intrinsic call
      - done in SoA layout
      - input interpolation also code generated
  
@@ -28,16 +31,17 @@ Done so far is:
      any width and length
    - not all operations are implemented for these types yet though
 
-Most mesa/progs/demos/* work. Speed is on par with Keith's softpipe-opt branch,
-which includes hand written fast implementations for common cases.
+Most mesa/progs/demos/* work. 
 
 To do (probably by this order):
 
  - code generate stipple and stencil testing
 
- - code generate texture sampling
+ - translate the remaining bits of texture sampling state
 
  - translate TGSI control flow instructions, and all other remaining opcodes
+ 
+ - integrate with the draw module for VS code generation
 
  - code generate the triangle setup and rasterization
 
@@ -93,7 +97,7 @@ Alternatively, you can build it with GNU make, if you prefer, by invoking it as
 
   make linux-llvm
 
-but the rest of these instructions assume scons is used.
+but the rest of these instructions assume that scons is used.
 
 
 Using
@@ -108,6 +112,9 @@ or
 
   export LD_LIBRARY_PATH=$PWD/build/linux-x86-debug/lib:$LD_LIBRARY_PATH
 
+For performance evaluation pass debug=no to scons, and use the corresponding
+lib directory without the "-debug" suffix.
+
 
 Unit testing
 ============
@@ -119,7 +126,7 @@ build/linux-???-debug/gallium/drivers/llvmpipe:
  - lp_test_conv: SIMD vector conversion
  - lp_test_format: pixel unpacking/packing
 
-Some of this tests can output results and benchmarks to a tab-seperated-file
+Some of this tests can output results and benchmarks to a tab-separated-file
 for posterior analysis, e.g.:
 
   build/linux-x86_64-debug/gallium/drivers/llvmpipe/lp_test_blend -o blend.tsv
@@ -133,10 +140,10 @@ Development Notes
   at the top of the lp_bld_*.c functions.  
 
 - All lp_bld_*.[ch] are isolated from the rest of the driver, and could/may be 
-  put in a standalone Gallium state -> LLVM IR translation module.
+  put in a stand-alone Gallium state -> LLVM IR translation module.
 
 - We use LLVM-C bindings for now. They are not documented, but follow the C++
   interfaces very closely, and appear to be complete enough for code
   generation. See 
   http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html
-  for a standalone example.
+  for a stand-alone example.

src/gallium/drivers/llvmpipe/SConscript

@@ -3,7 +3,7 @@ Import('*')
 env = env.Clone()
 
 env.Tool('llvm')
-if 'LLVM_VERSION' not in env:
+if env.has_key('LLVM_VERSION') is False:
     print 'warning: LLVM not found: not building llvmpipe'
     Return()
 
@@ -23,8 +23,10 @@ llvmpipe = env.ConvenienceLibrary(
 		'lp_bld_depth.c',
 		'lp_bld_flow.c',
 		'lp_bld_format_aos.c',
+		'lp_bld_format_soa.c',
 		'lp_bld_interp.c',
 		'lp_bld_intr.c',
+		'lp_bld_sample_soa.c',
 		'lp_bld_struct.c',
 		'lp_bld_logic.c',
 		'lp_bld_swizzle.c',
@@ -52,7 +54,8 @@ llvmpipe = env.ConvenienceLibrary(
 		'lp_state_vs.c',
 		'lp_surface.c',
 		'lp_tex_cache.c',
-		'lp_tex_sample.c',
+		'lp_tex_sample_c.c',
+		'lp_tex_sample_llvm.c',
 		'lp_texture.c',
 		'lp_tile_cache.c',
 		'lp_tile_soa.c',

src/gallium/drivers/llvmpipe/lp_bld_arit.c

@@ -502,6 +502,31 @@ lp_build_div(struct lp_build_context *bld,
 }
 
 
+LLVMValueRef
+lp_build_lerp(struct lp_build_context *bld,
+              LLVMValueRef x,
+              LLVMValueRef v0,
+              LLVMValueRef v1)
+{
+   return lp_build_add(bld, v0, lp_build_mul(bld, x, lp_build_sub(bld, v1, v0)));
+}
+
+
+LLVMValueRef
+lp_build_lerp_2d(struct lp_build_context *bld,
+                 LLVMValueRef x,
+                 LLVMValueRef y,
+                 LLVMValueRef v00,
+                 LLVMValueRef v01,
+                 LLVMValueRef v10,
+                 LLVMValueRef v11)
+{
+   LLVMValueRef v0 = lp_build_lerp(bld, x, v00, v01);
+   LLVMValueRef v1 = lp_build_lerp(bld, x, v10, v11);
+   return lp_build_lerp(bld, y, v0, v1);
+}
+
+
 /**
  * Generate min(a, b)
  * Do checks for special cases.
@@ -566,20 +591,31 @@ lp_build_abs(struct lp_build_context *bld,
              LLVMValueRef a)
 {
    const union lp_type type = bld->type;
+   LLVMTypeRef vec_type = lp_build_vec_type(type);
 
    if(!type.sign)
       return a;
 
-   /* XXX: is this really necessary? */
+   if(type.floating) {
+      /* Mask out the sign bit */
+      LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
+      LLVMValueRef mask = lp_build_int_const_scalar(type, ((unsigned long long)1 << type.width) - 1);
+      a = LLVMBuildBitCast(bld->builder, a, int_vec_type, "");
+      a = LLVMBuildAnd(bld->builder, a, mask, "");
+      a = LLVMBuildBitCast(bld->builder, a, vec_type, "");
+      return a;
+   }
+
 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
-   if(!type.floating && type.width*type.length == 128) {
-      LLVMTypeRef vec_type = lp_build_vec_type(type);
-      if(type.width == 8)
+   if(type.width*type.length == 128) {
+      switch(type.width) {
+      case 8:
          return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.b.128", vec_type, a);
-      if(type.width == 16)
+      case 16:
          return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.w.128", vec_type, a);
-      if(type.width == 32)
+      case 32:
          return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.d.128", vec_type, a);
+      }
    }
 #endif
 
@@ -587,6 +623,89 @@ lp_build_abs(struct lp_build_context *bld,
 }
 
 
+enum lp_build_round_sse41_mode
+{
+   LP_BUILD_ROUND_SSE41_NEAREST = 0,
+   LP_BUILD_ROUND_SSE41_FLOOR = 1,
+   LP_BUILD_ROUND_SSE41_CEIL = 2,
+   LP_BUILD_ROUND_SSE41_TRUNCATE = 3
+};
+
+
+static INLINE LLVMValueRef
+lp_build_round_sse41(struct lp_build_context *bld,
+                     LLVMValueRef a,
+                     enum lp_build_round_sse41_mode mode)
+{
+   const union lp_type type = bld->type;
+   LLVMTypeRef vec_type = lp_build_vec_type(type);
+   const char *intrinsic;
+
+   assert(type.floating);
+   assert(type.width*type.length == 128);
+
+   switch(type.width) {
+   case 32:
+      intrinsic = "llvm.x86.sse41.round.ps";
+      break;
+   case 64:
+      intrinsic = "llvm.x86.sse41.round.pd";
+      break;
+   default:
+      assert(0);
+      return bld->undef;
+   }
+
+   return lp_build_intrinsic_binary(bld->builder, intrinsic, vec_type, a,
+                                    LLVMConstInt(LLVMInt32Type(), mode, 0));
+}
+
+
+LLVMValueRef
+lp_build_floor(struct lp_build_context *bld,
+               LLVMValueRef a)
+{
+   const union lp_type type = bld->type;
+
+   assert(type.floating);
+
+#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
+   return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_FLOOR);
+#endif
+
+   /* FIXME */
+   assert(0);
+   return bld->undef;
+}
+
+
+/**
+ * Convert to integer, through whichever rounding method that's fastest,
+ * typically truncating to zero.
+ */
+LLVMValueRef
+lp_build_int(struct lp_build_context *bld,
+             LLVMValueRef a)
+{
+   const union lp_type type = bld->type;
+   LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
+
+   assert(type.floating);
+
+   return LLVMBuildFPToSI(bld->builder, a, int_vec_type, "");
+}
+
+
+LLVMValueRef
+lp_build_ifloor(struct lp_build_context *bld,
+                LLVMValueRef a)
+{
+   a = lp_build_floor(bld, a);
+   a = lp_build_int(bld, a);
+   return a;
+}
+
+
 LLVMValueRef
 lp_build_sqrt(struct lp_build_context *bld,
               LLVMValueRef a)

src/gallium/drivers/llvmpipe/lp_bld_arit.h

@@ -71,6 +71,26 @@ lp_build_div(struct lp_build_context *bld,
              LLVMValueRef a,
              LLVMValueRef b);
 
+LLVMValueRef
+lp_build_lerp(struct lp_build_context *bld,
+              LLVMValueRef x,
+              LLVMValueRef v0,
+              LLVMValueRef v1);
+
+/**
+ * Bilinear interpolation.
+ *
+ * Values indices are in v_{yx}.
+ */
+LLVMValueRef
+lp_build_lerp_2d(struct lp_build_context *bld,
+                 LLVMValueRef x,
+                 LLVMValueRef y,
+                 LLVMValueRef v00,
+                 LLVMValueRef v01,
+                 LLVMValueRef v10,
+                 LLVMValueRef v11);
+
 LLVMValueRef
 lp_build_min(struct lp_build_context *bld,
              LLVMValueRef a,
@@ -85,6 +105,18 @@ LLVMValueRef
 lp_build_abs(struct lp_build_context *bld,
              LLVMValueRef a);
 
+LLVMValueRef
+lp_build_floor(struct lp_build_context *bld,
+               LLVMValueRef a);
+
+LLVMValueRef
+lp_build_int(struct lp_build_context *bld,
+             LLVMValueRef a);
+
+LLVMValueRef
+lp_build_ifloor(struct lp_build_context *bld,
+                LLVMValueRef a);
+
 LLVMValueRef
 lp_build_sqrt(struct lp_build_context *bld,
               LLVMValueRef a);

src/gallium/drivers/llvmpipe/lp_bld_conv.c

@@ -122,7 +122,7 @@ lp_build_clamped_float_to_unsigned_norm(LLVMBuilderRef builder,
       int shift = dst_width - n;
       res = LLVMBuildShl(builder, res, lp_build_int_const_scalar(src_type, shift), "");
 
-      /* Fill in the empty lower bits for added precision? */
+      /* TODO: Fill in the empty lower bits for additional precision? */
 #if 0
       {
          LLVMValueRef msb;
@@ -244,7 +244,7 @@ lp_build_const_pack_shuffle(unsigned n)
  * Expand the bit width.
  *
  * This will only change the number of bits the values are represented, not the
- * values themselved.
+ * values themselves.
  */
 static void
 lp_build_expand(LLVMBuilderRef builder,

src/gallium/drivers/llvmpipe/lp_bld_debug.c

@@ -30,10 +30,27 @@
 #include <udis86.h>
 #endif
 
+#include "util/u_math.h"
 #include "util/u_debug.h"
 #include "lp_bld_debug.h"
 
 
+/**
+ * Check alignment.
+ *
+ * It is important that this check is not implemented as a macro or inlined
+ * function, as the compiler assumptions in respect to alignment of global
+ * and stack variables would often make the check a no op, defeating the
+ * whole purpose of the exercise.
+ */
+boolean
+lp_check_alignment(const void *ptr, unsigned alignment)
+{
+   assert(util_is_pot(alignment));
+   return ((uintptr_t)ptr & (alignment - 1)) == 0;
+}
+
+
 void
 lp_disassemble(const void* func)
 {

src/gallium/drivers/llvmpipe/lp_bld_debug.h

@@ -53,6 +53,10 @@ lp_build_name(LLVMValueRef val, const char *format, ...)
 }
 
 
+boolean
+lp_check_alignment(const void *ptr, unsigned alignment);
+
+
 void
 lp_disassemble(const void* func);
 

src/gallium/drivers/llvmpipe/lp_bld_depth.c

@@ -179,12 +179,13 @@ lp_build_depth_test(LLVMBuilderRef builder,
       padding_right = 0;
       for(chan = 0; chan < z_swizzle; ++chan)
          padding_right += format_desc->channel[chan].size;
-      padding_left = format_desc->block.bits - format_desc->channel[z_swizzle].size;
+      padding_left = format_desc->block.bits -
+                     (padding_right + format_desc->channel[z_swizzle].size);
 
       if(padding_left || padding_right) {
-         const long long mask_left = ((long long)1 << (format_desc->block.bits - padding_left)) - 1;
-         const long long mask_right = ((long long)1 << (padding_right)) - 1;
-         z_bitmask = lp_build_int_const_scalar(type, mask_left & mask_right);
+         const unsigned long long mask_left = ((unsigned long long)1 << (format_desc->block.bits - padding_left)) - 1;
+         const unsigned long long mask_right = ((unsigned long long)1 << (padding_right)) - 1;
+         z_bitmask = lp_build_int_const_scalar(type, mask_left ^ mask_right);
       }
 
       if(padding_left)
@@ -210,5 +211,6 @@ lp_build_depth_test(LLVMBuilderRef builder,
       LLVMBuildStore(builder, dst, dst_ptr);
    }
 
+   /* FIXME */
    assert(!state->occlusion_count);
 }

src/gallium/drivers/llvmpipe/lp_bld_flow.c

@@ -32,59 +32,261 @@
  */
 
 #include "util/u_debug.h"
+#include "util/u_memory.h"
 
 #include "lp_bld_type.h"
 #include "lp_bld_flow.h"
 
 
-void
-lp_build_mask_begin(struct lp_build_mask_context *mask,
-                    LLVMBuilderRef builder,
-                    union lp_type type,
-                    LLVMValueRef value)
-{
-   memset(mask, 0, sizeof *mask);
+#define LP_BUILD_FLOW_MAX_VARIABLES 32
+#define LP_BUILD_FLOW_MAX_DEPTH 32
 
-   mask->builder = builder;
-   mask->reg_type = LLVMIntType(type.width * type.length);
-   mask->value = value;
+
+/**
+ * Enumeration of all possible flow constructs.
+ */
+enum lp_build_flow_construct_kind {
+   lP_BUILD_FLOW_SCOPE,
+   LP_BUILD_FLOW_SKIP,
+};
+
+
+/**
+ * Variable declaration scope.
+ */
+struct lp_build_flow_scope
+{
+   /** Number of variables declared in this scope */
+   unsigned num_variables;
+};
+
+
+/**
+ * Early exit. Useful to skip to the end of a function or block when
+ * the execution mask becomes zero or when there is an error condition.
+ */
+struct lp_build_flow_skip
+{
+   /** Block to skip to */
+   LLVMBasicBlockRef block;
+
+   /** Number of variables declared at the beginning */
+   unsigned num_variables;
+
+   LLVMValueRef *phi;
+};
+
+
+/**
+ * Union of all possible flow constructs' data
+ */
+union lp_build_flow_construct_data
+{
+   struct lp_build_flow_scope scope;
+   struct lp_build_flow_skip skip;
+};
+
+
+/**
+ * Element of the flow construct stack.
+ */
+struct lp_build_flow_construct
+{
+   enum lp_build_flow_construct_kind kind;
+   union lp_build_flow_construct_data data;
+};
+
+
+/**
+ * All necessary data to generate LLVM control flow constructs.
+ *
+ * Besides keeping track of the control flow construct themselves we also
+ * need to keep track of variables in order to generate SSA Phi values.
+ */
+struct lp_build_flow_context
+{
+   LLVMBuilderRef builder;
+
+   /**
+    * Control flow stack.
+    */
+   struct lp_build_flow_construct constructs[LP_BUILD_FLOW_MAX_DEPTH];
+   unsigned num_constructs;
+
+   /**
+    * Variable stack
+    */
+   LLVMValueRef *variables[LP_BUILD_FLOW_MAX_VARIABLES];
+   unsigned num_variables;
+};
+
+
+struct lp_build_flow_context *
+lp_build_flow_create(LLVMBuilderRef builder)
+{
+   struct lp_build_flow_context *flow;
+
+   flow = CALLOC_STRUCT(lp_build_flow_context);
+   if(!flow)
+      return NULL;
+
+   flow->builder = builder;
+
+   return flow;
 }
 
 
 void
-lp_build_mask_update(struct lp_build_mask_context *mask,
-                     LLVMValueRef value)
+lp_build_flow_destroy(struct lp_build_flow_context *flow)
 {
+   assert(flow->num_constructs == 0);
+   assert(flow->num_variables == 0);
+   FREE(flow);
+}
 
-   LLVMValueRef cond;
+
+static union lp_build_flow_construct_data *
+lp_build_flow_push(struct lp_build_flow_context *flow,
+                   enum lp_build_flow_construct_kind kind)
+{
+   assert(flow->num_constructs < LP_BUILD_FLOW_MAX_DEPTH);
+   if(flow->num_constructs >= LP_BUILD_FLOW_MAX_DEPTH)
+      return NULL;
+
+   flow->constructs[flow->num_constructs].kind = kind;
+   return &flow->constructs[flow->num_constructs++].data;
+}
+
+
+static union lp_build_flow_construct_data *
+lp_build_flow_peek(struct lp_build_flow_context *flow,
+                   enum lp_build_flow_construct_kind kind)
+{
+   assert(flow->num_constructs);
+   if(!flow->num_constructs)
+      return NULL;
+
+   assert(flow->constructs[flow->num_constructs - 1].kind == kind);
+   if(flow->constructs[flow->num_constructs - 1].kind != kind)
+      return NULL;
+
+   return &flow->constructs[flow->num_constructs - 1].data;
+}
+
+
+static union lp_build_flow_construct_data *
+lp_build_flow_pop(struct lp_build_flow_context *flow,
+                  enum lp_build_flow_construct_kind kind)
+{
+   assert(flow->num_constructs);
+   if(!flow->num_constructs)
+      return NULL;
+
+   assert(flow->constructs[flow->num_constructs - 1].kind == kind);
+   if(flow->constructs[flow->num_constructs - 1].kind != kind)
+      return NULL;
+
+   return &flow->constructs[--flow->num_constructs].data;
+}
+
+
+/**
+ * Begin a variable scope.
+ *
+ *
+ */
+void
+lp_build_flow_scope_begin(struct lp_build_flow_context *flow)
+{
+   struct lp_build_flow_scope *scope;
+
+   scope = &lp_build_flow_push(flow, lP_BUILD_FLOW_SCOPE)->scope;
+   if(!scope)
+      return;
+
+   scope->num_variables = 0;
+}
+
+
+/**
+ * Declare a variable.
+ *
+ * A variable is a named entity which can have different LLVMValueRef's at
+ * different points of the program. This is relevant for control flow because
+ * when there are mutiple branches to a same location we need to replace
+ * the variable's value with a Phi function as explained in
+ * http://en.wikipedia.org/wiki/Static_single_assignment_form .
+ *
+ * We keep track of variables by keeping around a pointer to where their
+ * current.
+ *
+ * There are a few cautions to observe:
+ *
+ * - Variable's value must not be NULL. If there is no initial value then
+ *   LLVMGetUndef() should be used.
+ *
+ * - Variable's value must be kept up-to-date. If the variable is going to be
+ *   modified by a function then a pointer should be passed so that its value
+ *   is accurate. Failure to do this will cause some of the variables'
+ *   transient values to be lost, leading to wrong results.
+ *
+ * - A program should be written from top to bottom, by always appending
+ *   instructions to the bottom with a single LLVMBuilderRef. Inserting and/or
+ *   modifying existing statements will most likely lead to wrong results.
+ *
+ */
+void
+lp_build_flow_scope_declare(struct lp_build_flow_context *flow,
+                            LLVMValueRef *variable)
+{
+   struct lp_build_flow_scope *scope;
+
+   scope = &lp_build_flow_peek(flow, lP_BUILD_FLOW_SCOPE)->scope;
+   if(!scope)
+      return;
+
+   assert(*variable);
+   if(!*variable)
+      return;
+
+   assert(flow->num_variables < LP_BUILD_FLOW_MAX_VARIABLES);
+   if(flow->num_variables >= LP_BUILD_FLOW_MAX_VARIABLES)
+      return;
+
+   flow->variables[flow->num_variables++] = variable;
+   ++scope->num_variables;
+}
+
+
+void
+lp_build_flow_scope_end(struct lp_build_flow_context *flow)
+{
+   struct lp_build_flow_scope *scope;
+
+   scope = &lp_build_flow_pop(flow, lP_BUILD_FLOW_SCOPE)->scope;
+   if(!scope)
+      return;
+
+   assert(flow->num_variables >= scope->num_variables);
+   if(flow->num_variables < scope->num_variables) {
+      flow->num_variables = 0;
+      return;
+   }
+
+   flow->num_variables -= scope->num_variables;
+}
+
+
+static LLVMBasicBlockRef
+lp_build_flow_insert_block(struct lp_build_flow_context *flow)
+{
    LLVMBasicBlockRef current_block;
    LLVMBasicBlockRef next_block;
    LLVMBasicBlockRef new_block;
 
-   if(mask->value)
-      mask->value = LLVMBuildAnd(mask->builder, mask->value, value, "");
-   else
-      mask->value = value;
-
-   /* FIXME: disabled until we have proper control flow helpers */
-#if 0
-   cond = LLVMBuildICmp(mask->builder,
-                        LLVMIntEQ,
-                        LLVMBuildBitCast(mask->builder, mask->value, mask->reg_type, ""),
-                        LLVMConstNull(mask->reg_type),
-                        "");
-
-   current_block = LLVMGetInsertBlock(mask->builder);
-
-   if(!mask->skip_block) {
-      LLVMValueRef function = LLVMGetBasicBlockParent(current_block);
-      mask->skip_block = LLVMAppendBasicBlock(function, "skip");
-
-      mask->phi = LLVMBuildPhi(mask->builder, LLVMTypeOf(mask->value), "");
-   }
+   current_block = LLVMGetInsertBlock(flow->builder);
 
    next_block = LLVMGetNextBasicBlock(current_block);
-   assert(next_block);
    if(next_block) {
       new_block = LLVMInsertBasicBlock(next_block, "");
    }
@@ -93,30 +295,148 @@ lp_build_mask_update(struct lp_build_mask_context *mask,
       new_block = LLVMAppendBasicBlock(function, "");
    }
 
-   LLVMAddIncoming(mask->phi, &mask->value, &current_block, 1);
-   LLVMBuildCondBr(mask->builder, cond, mask->skip_block, new_block);
+   return new_block;
+}
 
-   LLVMPositionBuilderAtEnd(mask->builder, new_block);
-#endif
+void
+lp_build_flow_skip_begin(struct lp_build_flow_context *flow)
+{
+   struct lp_build_flow_skip *skip;
+   LLVMBuilderRef builder;
+   unsigned i;
+
+   skip = &lp_build_flow_push(flow, LP_BUILD_FLOW_SKIP)->skip;
+   if(!skip)
+      return;
+
+   skip->block = lp_build_flow_insert_block(flow);
+   skip->num_variables = flow->num_variables;
+   if(!skip->num_variables) {
+      skip->phi = NULL;
+      return;
+   }
+
+   skip->phi = MALLOC(skip->num_variables * sizeof *skip->phi);
+   if(!skip->phi) {
+      skip->num_variables = 0;
+      return;
+   }
+
+   builder = LLVMCreateBuilder();
+   LLVMPositionBuilderAtEnd(builder, skip->block);
+
+   for(i = 0; i < skip->num_variables; ++i)
+      skip->phi[i] = LLVMBuildPhi(builder, LLVMTypeOf(*flow->variables[i]), "");
+
+   LLVMDisposeBuilder(builder);
+}
+
+
+void
+lp_build_flow_skip_cond_break(struct lp_build_flow_context *flow,
+                              LLVMValueRef cond)
+{
+   struct lp_build_flow_skip *skip;
+   LLVMBasicBlockRef current_block;
+   LLVMBasicBlockRef new_block;
+   unsigned i;
+
+   skip = &lp_build_flow_peek(flow, LP_BUILD_FLOW_SKIP)->skip;
+   if(!skip)
+      return;
+
+   current_block = LLVMGetInsertBlock(flow->builder);
+
+   new_block = lp_build_flow_insert_block(flow);
+
+   for(i = 0; i < skip->num_variables; ++i) {
+      assert(*flow->variables[i]);
+      LLVMAddIncoming(skip->phi[i], flow->variables[i], &current_block, 1);
+   }
+
+   LLVMBuildCondBr(flow->builder, cond, skip->block, new_block);
+
+   LLVMPositionBuilderAtEnd(flow->builder, new_block);
+ }
+
+
+void
+lp_build_flow_skip_end(struct lp_build_flow_context *flow)
+{
+   struct lp_build_flow_skip *skip;
+   LLVMBasicBlockRef current_block;
+   unsigned i;
+
+   skip = &lp_build_flow_pop(flow, LP_BUILD_FLOW_SKIP)->skip;
+   if(!skip)
+      return;
+
+   current_block = LLVMGetInsertBlock(flow->builder);
+
+   for(i = 0; i < skip->num_variables; ++i) {
+      assert(*flow->variables[i]);
+      LLVMAddIncoming(skip->phi[i], flow->variables[i], &current_block, 1);
+      *flow->variables[i] = skip->phi[i];
+   }
+
+   LLVMBuildBr(flow->builder, skip->block);
+   LLVMPositionBuilderAtEnd(flow->builder, skip->block);
+
+   FREE(skip->phi);
+}
+
+
+static void
+lp_build_mask_check(struct lp_build_mask_context *mask)
+{
+   LLVMBuilderRef builder = mask->flow->builder;
+   LLVMValueRef cond;
+
+   cond = LLVMBuildICmp(builder,
+                        LLVMIntEQ,
+                        LLVMBuildBitCast(builder, mask->value, mask->reg_type, ""),
+                        LLVMConstNull(mask->reg_type),
+                        "");
+
+   lp_build_flow_skip_cond_break(mask->flow, cond);
+}
+
+
+void
+lp_build_mask_begin(struct lp_build_mask_context *mask,
+                    struct lp_build_flow_context *flow,
+                    union lp_type type,
+                    LLVMValueRef value)
+{
+   memset(mask, 0, sizeof *mask);
+
+   mask->flow = flow;
+   mask->reg_type = LLVMIntType(type.width * type.length);
+   mask->value = value;
+
+   lp_build_flow_scope_begin(flow);
+   lp_build_flow_scope_declare(flow, &mask->value);
+   lp_build_flow_skip_begin(flow);
+
+   lp_build_mask_check(mask);
+}
+
+
+void
+lp_build_mask_update(struct lp_build_mask_context *mask,
+                     LLVMValueRef value)
+{
+   mask->value = LLVMBuildAnd( mask->flow->builder, mask->value, value, "");
+
+   lp_build_mask_check(mask);
 }
 
 
 LLVMValueRef
 lp_build_mask_end(struct lp_build_mask_context *mask)
 {
-   if(mask->skip_block) {
-      LLVMBasicBlockRef current_block = LLVMGetInsertBlock(mask->builder);
-
-      LLVMAddIncoming(mask->phi, &mask->value, &current_block, 1);
-      LLVMBuildBr(mask->builder, mask->skip_block);
-
-      LLVMPositionBuilderAtEnd(mask->builder, mask->skip_block);
-
-      mask->value = mask->phi;
-      mask->phi = NULL;
-      mask->skip_block = NULL;
-   }
-
+   lp_build_flow_skip_end(mask->flow);
+   lp_build_flow_scope_end(mask->flow);
    return mask->value;
 }
 

src/gallium/drivers/llvmpipe/lp_bld_flow.h

@@ -41,23 +41,49 @@
 union lp_type;
 
 
+struct lp_build_flow_context;
+
+
+struct lp_build_flow_context *
+lp_build_flow_create(LLVMBuilderRef builder);
+
+void
+lp_build_flow_destroy(struct lp_build_flow_context *flow);
+
+void
+lp_build_flow_scope_begin(struct lp_build_flow_context *flow);
+
+void
+lp_build_flow_scope_declare(struct lp_build_flow_context *flow,
+                            LLVMValueRef *variable);
+
+void
+lp_build_flow_scope_end(struct lp_build_flow_context *flow);
+
+void
+lp_build_flow_skip_begin(struct lp_build_flow_context *flow);
+
+void
+lp_build_flow_skip_cond_break(struct lp_build_flow_context *flow,
+                              LLVMValueRef cond);
+
+void
+lp_build_flow_skip_end(struct lp_build_flow_context *flow);
+
+
 struct lp_build_mask_context
 {
-   LLVMBuilderRef builder;
+   struct lp_build_flow_context *flow;
 
    LLVMTypeRef reg_type;
 
    LLVMValueRef value;
-
-   LLVMValueRef phi;
-
-   LLVMBasicBlockRef skip_block;
 };
 
 
 void
 lp_build_mask_begin(struct lp_build_mask_context *mask,
-                    LLVMBuilderRef builder,
+                    struct lp_build_flow_context *flow,
                     union lp_type type,
                     LLVMValueRef value);
 

src/gallium/drivers/llvmpipe/lp_bld_format.h

@@ -31,20 +31,14 @@
 
 /**
  * @file
- * LLVM IR building helpers interfaces.
- *
- * We use LLVM-C bindings for now. They are not documented, but follow the C++
- * interfaces very closely, and appear to be complete enough for code
- * genration. See
- * http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html
- * for a standalone example.
+ * Pixel format helpers.
  */
 
 #include <llvm-c/Core.h>  
- 
+
 #include "pipe/p_format.h"
 
-
+struct util_format_description;
 union lp_type;
 
 
@@ -56,9 +50,9 @@ union lp_type;
  * @return RGBA in a 4 floats vector.
  */
 LLVMValueRef
-lp_build_unpack_rgba(LLVMBuilderRef builder,
-                     enum pipe_format format, 
-                     LLVMValueRef packed);
+lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
+                         enum pipe_format format,
+                         LLVMValueRef packed);
 
 
 /**
@@ -67,9 +61,9 @@ lp_build_unpack_rgba(LLVMBuilderRef builder,
  * @param rgba 4 float vector with the unpacked components.
  */
 LLVMValueRef
-lp_build_pack_rgba(LLVMBuilderRef builder,
-                   enum pipe_format format,
-                   LLVMValueRef rgba);
+lp_build_pack_rgba_aos(LLVMBuilderRef builder,
+                       enum pipe_format format,
+                       LLVMValueRef rgba);
 
 
 /**
@@ -81,9 +75,9 @@ lp_build_pack_rgba(LLVMBuilderRef builder,
  * @return RGBA in a 4 floats vector.
  */
 LLVMValueRef
-lp_build_load_rgba(LLVMBuilderRef builder,
-                   enum pipe_format format, 
-                   LLVMValueRef ptr);
+lp_build_load_rgba_aos(LLVMBuilderRef builder,
+                       enum pipe_format format,
+                       LLVMValueRef ptr);
 
 
 /**
@@ -92,10 +86,34 @@ lp_build_load_rgba(LLVMBuilderRef builder,
  * @param rgba 4 float vector with the unpacked components.
  */
 void 
-lp_build_store_rgba(LLVMBuilderRef builder,
-                    enum pipe_format format,
-                    LLVMValueRef ptr,
-                    LLVMValueRef rgba);
+lp_build_store_rgba_aos(LLVMBuilderRef builder,
+                        enum pipe_format format,
+                        LLVMValueRef ptr,
+                        LLVMValueRef rgba);
 
+LLVMValueRef
+lp_build_gather(LLVMBuilderRef builder,
+                unsigned length,
+                unsigned src_width,
+                unsigned dst_width,
+                LLVMValueRef base_ptr,
+                LLVMValueRef offsets);
+
+
+void
+lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
+                         const struct util_format_description *format_desc,
+                         union lp_type type,
+                         LLVMValueRef packed,
+                         LLVMValueRef *rgba);
+
+
+void
+lp_build_load_rgba_soa(LLVMBuilderRef builder,
+                       const struct util_format_description *format_desc,
+                       union lp_type type,
+                       LLVMValueRef base_ptr,
+                       LLVMValueRef offsets,
+                       LLVMValueRef *rgba);
 
 #endif /* !LP_BLD_H */

src/gallium/drivers/llvmpipe/lp_bld_format_aos.c

@@ -32,9 +32,9 @@
 
 
 LLVMValueRef
-lp_build_unpack_rgba(LLVMBuilderRef builder,
-                     enum pipe_format format,
-                     LLVMValueRef packed)
+lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
+                         enum pipe_format format,
+                         LLVMValueRef packed)
 {
    const struct util_format_description *desc;
    LLVMTypeRef type;
@@ -152,9 +152,9 @@ lp_build_unpack_rgba(LLVMBuilderRef builder,
 
 
 LLVMValueRef
-lp_build_pack_rgba(LLVMBuilderRef builder,
-                   enum pipe_format format,
-                   LLVMValueRef rgba)
+lp_build_pack_rgba_aos(LLVMBuilderRef builder,
+                       enum pipe_format format,
+                       LLVMValueRef rgba)
 {
    const struct util_format_description *desc;
    LLVMTypeRef type;
@@ -250,9 +250,9 @@ lp_build_pack_rgba(LLVMBuilderRef builder,
 
 
 LLVMValueRef
-lp_build_load_rgba(LLVMBuilderRef builder,
-                   enum pipe_format format,
-                   LLVMValueRef ptr)
+lp_build_load_rgba_aos(LLVMBuilderRef builder,
+                       enum pipe_format format,
+                       LLVMValueRef ptr)
 {
    const struct util_format_description *desc;
    LLVMTypeRef type;
@@ -272,15 +272,15 @@ lp_build_load_rgba(LLVMBuilderRef builder,
 
    packed = LLVMBuildLoad(builder, ptr, "");
 
-   return lp_build_unpack_rgba(builder, format, packed);
+   return lp_build_unpack_rgba_aos(builder, format, packed);
 }
 
 
 void
-lp_build_store_rgba(LLVMBuilderRef builder,
-                    enum pipe_format format,
-                    LLVMValueRef ptr,
-                    LLVMValueRef rgba)
+lp_build_store_rgba_aos(LLVMBuilderRef builder,
+                        enum pipe_format format,
+                        LLVMValueRef ptr,
+                        LLVMValueRef rgba)
 {
    const struct util_format_description *desc;
    LLVMTypeRef type;
@@ -294,7 +294,7 @@ lp_build_store_rgba(LLVMBuilderRef builder,
 
    type = LLVMIntType(desc->block.bits);
 
-   packed = lp_build_pack_rgba(builder, format, rgba);
+   packed = lp_build_pack_rgba_aos(builder, format, rgba);
 
    ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), "");
 

src/gallium/drivers/llvmpipe/lp_bld_format_soa.c

@@ -0,0 +1,208 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * 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, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "util/u_format.h"
+
+#include "lp_bld_type.h"
+#include "lp_bld_const.h"
+#include "lp_bld_conv.h"
+#include "lp_bld_format.h"
+
+
+/**
+ * Gather elements from scatter positions in memory into a single vector.
+ *
+ * @param src_width src element width
+ * @param dst_width result element width (source will be expanded to fit)
+ * @param length length of the offsets,
+ * @param base_ptr base pointer, should be a i8 pointer type.
+ * @param offsets vector with offsets
+ */
+LLVMValueRef
+lp_build_gather(LLVMBuilderRef builder,
+                unsigned length,
+                unsigned src_width,
+                unsigned dst_width,
+                LLVMValueRef base_ptr,
+                LLVMValueRef offsets)
+{
+   LLVMTypeRef src_type = LLVMIntType(src_width);
+   LLVMTypeRef src_ptr_type = LLVMPointerType(src_type, 0);
+   LLVMTypeRef dst_elem_type = LLVMIntType(dst_width);
+   LLVMTypeRef dst_vec_type = LLVMVectorType(dst_elem_type, length);
+   LLVMValueRef res;
+   unsigned i;
+
+   res = LLVMGetUndef(dst_vec_type);
+   for(i = 0; i < length; ++i) {
+      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      LLVMValueRef elem_offset;
+      LLVMValueRef elem_ptr;
+      LLVMValueRef elem;
+
+      elem_offset = LLVMBuildExtractElement(builder, offsets, index, "");
+      elem_ptr = LLVMBuildGEP(builder, base_ptr, &elem_offset, 1, "");
+      elem_ptr = LLVMBuildBitCast(builder, elem_ptr, src_ptr_type, "");
+      elem = LLVMBuildLoad(builder, elem_ptr, "");
+
+      assert(src_width <= dst_width);
+      if(src_width > dst_width)
+         elem = LLVMBuildTrunc(builder, elem, dst_elem_type, "");
+      if(src_width < dst_width)
+         elem = LLVMBuildZExt(builder, elem, dst_elem_type, "");
+
+      res = LLVMBuildInsertElement(builder, res, elem, index, "");
+   }
+
+   return res;
+}
+
+
+static LLVMValueRef
+lp_build_format_swizzle(union lp_type type,
+                        const LLVMValueRef *inputs,
+                        enum util_format_swizzle swizzle)
+{
+   switch (swizzle) {
+   case UTIL_FORMAT_SWIZZLE_X:
+   case UTIL_FORMAT_SWIZZLE_Y:
+   case UTIL_FORMAT_SWIZZLE_Z:
+   case UTIL_FORMAT_SWIZZLE_W:
+      return inputs[swizzle];
+   case UTIL_FORMAT_SWIZZLE_0:
+      return lp_build_zero(type);
+   case UTIL_FORMAT_SWIZZLE_1:
+      return lp_build_one(type);
+   case UTIL_FORMAT_SWIZZLE_NONE:
+      return lp_build_undef(type);
+   default:
+      assert(0);
+      return lp_build_undef(type);
+   }
+}
+
+
+void
+lp_build_unpack_rgba_soa(LLVMBuilderRef builder,
+                         const struct util_format_description *format_desc,
+                         union lp_type type,
+                         LLVMValueRef packed,
+                         LLVMValueRef *rgba)
+{
+   LLVMValueRef inputs[4];
+   unsigned start;
+   unsigned chan;
+
+   /* FIXME: Support more formats */
+   assert(format_desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
+   assert(format_desc->block.width == 1);
+   assert(format_desc->block.height == 1);
+   assert(format_desc->block.bits <= 32);
+
+   /* Decode the input vector components */
+   start = 0;
+   for (chan = 0; chan < 4; ++chan) {
+      unsigned width = format_desc->channel[chan].size;
+      unsigned stop = start + width;
+      LLVMValueRef input;
+
+      input = packed;
+
+      switch(format_desc->channel[chan].type) {
+      case UTIL_FORMAT_TYPE_VOID:
+         input = NULL;
+         break;
+
+      case UTIL_FORMAT_TYPE_UNSIGNED:
+         if(type.floating) {
+            if(start)
+               input = LLVMBuildLShr(builder, input, lp_build_int_const_scalar(type, start), "");
+            if(stop < format_desc->block.bits) {
+               unsigned mask = ((unsigned long long)1 << width) - 1;
+               input = LLVMBuildAnd(builder, input, lp_build_int_const_scalar(type, mask), "");
+            }
+
+            if(format_desc->channel[chan].normalized)
+               input = lp_build_unsigned_norm_to_float(builder, width, type, input);
+            else
+               input = LLVMBuildFPToSI(builder, input, lp_build_vec_type(type), "");
+         }
+         else {
+            /* FIXME */
+            assert(0);
+            input = lp_build_undef(type);
+         }
+         break;
+
+      default:
+         /* fall through */
+         input = lp_build_undef(type);
+         break;
+      }
+
+      inputs[chan] = input;
+
+      start = stop;
+   }
+
+   if(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
+      enum util_format_swizzle swizzle = format_desc->swizzle[0];
+      LLVMValueRef depth = lp_build_format_swizzle(type, inputs, swizzle);
+      rgba[2] = rgba[1] = rgba[0] = depth;
+      rgba[3] = lp_build_one(type);
+   }
+   else {
+      for (chan = 0; chan < 4; ++chan) {
+         enum util_format_swizzle swizzle = format_desc->swizzle[chan];
+         rgba[chan] = lp_build_format_swizzle(type, inputs, swizzle);
+      }
+   }
+}
+
+
+void
+lp_build_load_rgba_soa(LLVMBuilderRef builder,
+                       const struct util_format_description *format_desc,
+                       union lp_type type,
+                       LLVMValueRef base_ptr,
+                       LLVMValueRef offsets,
+                       LLVMValueRef *rgba)
+{
+   LLVMValueRef packed;
+
+   assert(format_desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
+   assert(format_desc->block.width == 1);
+   assert(format_desc->block.height == 1);
+   assert(format_desc->block.bits <= 32);
+
+   packed = lp_build_gather(builder,
+                            type.length, format_desc->block.bits, type.width,
+                            base_ptr, offsets);
+
+   lp_build_unpack_rgba_soa(builder, format_desc, type, packed, rgba);
+}

src/gallium/drivers/llvmpipe/lp_bld_logic.c

@@ -313,8 +313,6 @@ lp_build_select(struct lp_build_context *bld,
       b = LLVMBuildBitCast(bld->builder, b, int_vec_type, "");
    }
 
-   /* TODO: On SSE4 we could do this with a single instruction -- PBLENDVB */
-
    a = LLVMBuildAnd(bld->builder, a, mask, "");
 
    /* This often gets translated to PANDN, but sometimes the NOT is
@@ -376,9 +374,9 @@ lp_build_select_aos(struct lp_build_context *bld,
 
       return LLVMBuildShuffleVector(bld->builder, a, b, LLVMConstVector(shuffles, n), "");
    }
+   else {
 #if 0
-   else if(0) {
-      /* FIXME: Unfortunately select of vectors do not work */
+      /* XXX: Unfortunately select of vectors do not work */
       /* Use a select */
       LLVMTypeRef elem_type = LLVMInt1Type();
       LLVMValueRef cond[LP_MAX_VECTOR_LENGTH];
@@ -388,10 +386,9 @@ lp_build_select_aos(struct lp_build_context *bld,
             cond[j + i] = LLVMConstInt(elem_type, cond[i] ? 1 : 0, 0);
 
       return LLVMBuildSelect(bld->builder, LLVMConstVector(cond, n), a, b, "");
-   }
-#endif
-   else {
+#else
       LLVMValueRef mask = lp_build_const_mask_aos(type, cond);
       return lp_build_select(bld, mask, a, b);
+#endif
    }
 }

src/gallium/drivers/llvmpipe/lp_bld_sample.h

@@ -0,0 +1,135 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * 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, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * Texture sampling.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#ifndef LP_BLD_SAMPLE_H
+#define LP_BLD_SAMPLE_H
+
+
+#include <llvm-c/Core.h>
+
+struct pipe_texture;
+struct pipe_sampler_state;
+union lp_type;
+
+
+/**
+ * Sampler static state.
+ *
+ * These are the bits of state from pipe_texture and pipe_sampler_state that
+ * are embedded in the generated code.
+ */
+struct lp_sampler_static_state
+{
+   /* pipe_texture's state */
+   enum pipe_format format;
+   unsigned target:2;
+   unsigned pot_width:1;
+   unsigned pot_height:1;
+   unsigned pot_depth:1;
+
+   /* pipe_sampler_state's state */
+   unsigned wrap_s:3;
+   unsigned wrap_t:3;
+   unsigned wrap_r:3;
+   unsigned min_img_filter:2;
+   unsigned min_mip_filter:2;
+   unsigned mag_img_filter:2;
+   unsigned compare_mode:1;
+   unsigned compare_func:3;
+   unsigned normalized_coords:1;
+   unsigned prefilter:4;
+};
+
+
+/**
+ * Sampler dynamic state.
+ *
+ * These are the bits of state from pipe_texture and pipe_sampler_state that
+ * are computed in runtime.
+ *
+ * There are obtained through callbacks, as we don't want to tie the texture
+ * sampling code generation logic to any particular texture layout or pipe
+ * driver.
+ */
+struct lp_sampler_dynamic_state
+{
+
+   /** Obtain the base texture width. */
+   LLVMValueRef
+   (*width)( struct lp_sampler_dynamic_state *state,
+             LLVMBuilderRef builder,
+             unsigned unit);
+
+   /** Obtain the base texture height. */
+   LLVMValueRef
+   (*height)( struct lp_sampler_dynamic_state *state,
+              LLVMBuilderRef builder,
+              unsigned unit);
+
+   LLVMValueRef
+   (*stride)( struct lp_sampler_dynamic_state *state,
+              LLVMBuilderRef builder,
+              unsigned unit);
+
+   LLVMValueRef
+   (*data_ptr)( struct lp_sampler_dynamic_state *state,
+                LLVMBuilderRef builder,
+                unsigned unit);
+
+};
+
+
+/**
+ * Derive the sampler static state.
+ */
+void
+lp_sampler_static_state(struct lp_sampler_static_state *state,
+                        const struct pipe_texture *texture,
+                        const struct pipe_sampler_state *sampler);
+
+
+void
+lp_build_sample_soa(LLVMBuilderRef builder,
+                    const struct lp_sampler_static_state *static_state,
+                    struct lp_sampler_dynamic_state *dynamic_state,
+                    union lp_type fp_type,
+                    unsigned unit,
+                    unsigned num_coords,
+                    const LLVMValueRef *coords,
+                    LLVMValueRef lodbias,
+                    LLVMValueRef *texel);
+
+
+
+#endif /* LP_BLD_SAMPLE_H */

src/gallium/drivers/llvmpipe/lp_bld_sample_soa.c

@@ -0,0 +1,411 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * 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, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * Texture sampling.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#include "pipe/p_defines.h"
+#include "pipe/p_state.h"
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "util/u_format.h"
+#include "lp_bld_debug.h"
+#include "lp_bld_type.h"
+#include "lp_bld_const.h"
+#include "lp_bld_arit.h"
+#include "lp_bld_logic.h"
+#include "lp_bld_swizzle.h"
+#include "lp_bld_format.h"
+#include "lp_bld_sample.h"
+
+
+void
+lp_sampler_static_state(struct lp_sampler_static_state *state,
+                        const struct pipe_texture *texture,
+                        const struct pipe_sampler_state *sampler)
+{
+   memset(state, 0, sizeof *state);
+
+   if(!texture)
+      return;
+
+   if(!sampler)
+      return;
+
+   state->format            = texture->format;
+   state->target            = texture->target;
+   state->pot_width         = util_is_pot(texture->width[0]);
+   state->pot_height        = util_is_pot(texture->height[0]);
+   state->pot_depth         = util_is_pot(texture->depth[0]);
+
+   state->wrap_s            = sampler->wrap_s;
+   state->wrap_t            = sampler->wrap_t;
+   state->wrap_r            = sampler->wrap_r;
+   state->min_img_filter    = sampler->min_img_filter;
+   state->min_mip_filter    = sampler->min_mip_filter;
+   state->mag_img_filter    = sampler->mag_img_filter;
+   if(sampler->compare_mode) {
+      state->compare_mode      = sampler->compare_mode;
+      state->compare_func      = sampler->compare_func;
+   }
+   state->normalized_coords = sampler->normalized_coords;
+   state->prefilter         = sampler->prefilter;
+}
+
+
+
+/**
+ * Keep all information for sampling code generation in a single place.
+ */
+struct lp_build_sample_context
+{
+   LLVMBuilderRef builder;
+
+   const struct lp_sampler_static_state *static_state;
+
+   struct lp_sampler_dynamic_state *dynamic_state;
+
+   const struct util_format_description *format_desc;
+
+   /** Incoming coordinates type and build context */
+   union lp_type coord_type;
+   struct lp_build_context coord_bld;
+
+   /** Integer coordinates */
+   union lp_type int_coord_type;
+   struct lp_build_context int_coord_bld;
+
+   /** Output texels type and build context */
+   union lp_type texel_type;
+   struct lp_build_context texel_bld;
+};
+
+
+static void
+lp_build_sample_texel(struct lp_build_sample_context *bld,
+                      LLVMValueRef x,
+                      LLVMValueRef y,
+                      LLVMValueRef y_stride,
+                      LLVMValueRef data_ptr,
+                      LLVMValueRef *texel)
+{
+   struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+   LLVMValueRef x_stride;
+   LLVMValueRef offset;
+
+   x_stride = lp_build_const_scalar(bld->int_coord_type, bld->format_desc->block.bits/8);
+
+   if(bld->format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) {
+      LLVMValueRef x_lo, x_hi;
+      LLVMValueRef y_lo, y_hi;
+      LLVMValueRef x_stride_lo, x_stride_hi;
+      LLVMValueRef y_stride_lo, y_stride_hi;
+      LLVMValueRef x_offset_lo, x_offset_hi;
+      LLVMValueRef y_offset_lo, y_offset_hi;
+      LLVMValueRef offset_lo, offset_hi;
+
+      x_lo = LLVMBuildAnd(bld->builder, x, int_coord_bld->one, "");
+      y_lo = LLVMBuildAnd(bld->builder, y, int_coord_bld->one, "");
+
+      x_hi = LLVMBuildLShr(bld->builder, x, int_coord_bld->one, "");
+      y_hi = LLVMBuildLShr(bld->builder, y, int_coord_bld->one, "");
+
+      x_stride_lo = x_stride;
+      y_stride_lo = lp_build_const_scalar(bld->int_coord_type, 2*bld->format_desc->block.bits/8);
+
+      x_stride_hi = lp_build_const_scalar(bld->int_coord_type, 4*bld->format_desc->block.bits/8);
+      y_stride_hi = LLVMBuildShl(bld->builder, y_stride, int_coord_bld->one, "");
+
+      x_offset_lo = lp_build_mul(int_coord_bld, x_lo, x_stride_lo);
+      y_offset_lo = lp_build_mul(int_coord_bld, y_lo, y_stride_lo);
+      offset_lo = lp_build_add(int_coord_bld, x_offset_lo, y_offset_lo);
+
+      x_offset_hi = lp_build_mul(int_coord_bld, x_hi, x_stride_hi);
+      y_offset_hi = lp_build_mul(int_coord_bld, y_hi, y_stride_hi);
+      offset_hi = lp_build_add(int_coord_bld, x_offset_hi, y_offset_hi);
+
+      offset = lp_build_add(int_coord_bld, offset_hi, offset_lo);
+   }
+   else {
+      LLVMValueRef x_offset;
+      LLVMValueRef y_offset;
+
+      x_offset = lp_build_mul(int_coord_bld, x, x_stride);
+      y_offset = lp_build_mul(int_coord_bld, y, y_stride);
+
+      offset = lp_build_add(int_coord_bld, x_offset, y_offset);
+   }
+
+   lp_build_load_rgba_soa(bld->builder,
+                          bld->format_desc,
+                          bld->texel_type,
+                          data_ptr,
+                          offset,
+                          texel);
+}
+
+
+static LLVMValueRef
+lp_build_sample_wrap(struct lp_build_sample_context *bld,
+                     LLVMValueRef coord,
+                     LLVMValueRef length,
+                     boolean is_pot,
+                     unsigned wrap_mode)
+{
+   struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
+   LLVMValueRef length_minus_one;
+
+   length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one);
+
+   switch(wrap_mode) {
+   case PIPE_TEX_WRAP_REPEAT:
+      if(is_pot)
+         coord = LLVMBuildAnd(bld->builder, coord, length_minus_one, "");
+      else
+         /* Signed remainder won't give the right results for negative
+          * dividends but unsigned remainder does.*/
+         coord = LLVMBuildURem(bld->builder, coord, length, "");
+      break;
+
+   case PIPE_TEX_WRAP_CLAMP:
+      coord = lp_build_max(int_coord_bld, coord, int_coord_bld->zero);
+      coord = lp_build_min(int_coord_bld, coord, length_minus_one);
+      break;
+
+   case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+   case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+   case PIPE_TEX_WRAP_MIRROR_REPEAT:
+   case PIPE_TEX_WRAP_MIRROR_CLAMP:
+   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+      /* FIXME */
+   default:
+      assert(0);
+   }
+
+   return coord;
+}
+
+
+static void
+lp_build_sample_2d_nearest_soa(struct lp_build_sample_context *bld,
+                               LLVMValueRef s,
+                               LLVMValueRef t,
+                               LLVMValueRef width,
+                               LLVMValueRef height,
+                               LLVMValueRef stride,
+                               LLVMValueRef data_ptr,
+                               LLVMValueRef *texel)
+{
+   LLVMValueRef x;
+   LLVMValueRef y;
+
+   x = lp_build_ifloor(&bld->coord_bld, s);
+   y = lp_build_ifloor(&bld->coord_bld, t);
+
+   x = lp_build_sample_wrap(bld, x, width,  bld->static_state->pot_width,  bld->static_state->wrap_s);
+   y = lp_build_sample_wrap(bld, y, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+
+   lp_build_sample_texel(bld, x, y, stride, data_ptr, texel);
+}
+
+
+static void
+lp_build_sample_2d_linear_soa(struct lp_build_sample_context *bld,
+                              LLVMValueRef s,
+                              LLVMValueRef t,
+                              LLVMValueRef width,
+                              LLVMValueRef height,
+                              LLVMValueRef stride,
+                              LLVMValueRef data_ptr,
+                              LLVMValueRef *texel)
+{
+   LLVMValueRef half;
+   LLVMValueRef s_ipart;
+   LLVMValueRef t_ipart;
+   LLVMValueRef s_fpart;
+   LLVMValueRef t_fpart;
+   LLVMValueRef x0, x1;
+   LLVMValueRef y0, y1;
+   LLVMValueRef neighbors[2][2][4];
+   unsigned chan;
+
+   half = lp_build_const_scalar(bld->coord_type, 0.5);
+   s = lp_build_sub(&bld->coord_bld, s, half);
+   t = lp_build_sub(&bld->coord_bld, t, half);
+
+   s_ipart = lp_build_floor(&bld->coord_bld, s);
+   t_ipart = lp_build_floor(&bld->coord_bld, t);
+
+   s_fpart = lp_build_sub(&bld->coord_bld, s, s_ipart);
+   t_fpart = lp_build_sub(&bld->coord_bld, t, t_ipart);
+
+   x0 = lp_build_int(&bld->coord_bld, s_ipart);
+   y0 = lp_build_int(&bld->coord_bld, t_ipart);
+
+   x0 = lp_build_sample_wrap(bld, x0, width,  bld->static_state->pot_width,  bld->static_state->wrap_s);
+   y0 = lp_build_sample_wrap(bld, y0, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+
+   x1 = lp_build_add(&bld->int_coord_bld, x0, bld->int_coord_bld.one);
+   y1 = lp_build_add(&bld->int_coord_bld, y0, bld->int_coord_bld.one);
+
+   x1 = lp_build_sample_wrap(bld, x1, width,  bld->static_state->pot_width,  bld->static_state->wrap_s);
+   y1 = lp_build_sample_wrap(bld, y1, height, bld->static_state->pot_height, bld->static_state->wrap_t);
+
+   lp_build_sample_texel(bld, x0, y0, stride, data_ptr, neighbors[0][0]);
+   lp_build_sample_texel(bld, x1, y0, stride, data_ptr, neighbors[0][1]);
+   lp_build_sample_texel(bld, x0, y1, stride, data_ptr, neighbors[1][0]);
+   lp_build_sample_texel(bld, x1, y1, stride, data_ptr, neighbors[1][1]);
+
+   /* TODO: Don't interpolate missing channels */
+   for(chan = 0; chan < 4; ++chan) {
+      texel[chan] = lp_build_lerp_2d(&bld->texel_bld,
+                                     s_fpart, t_fpart,
+                                     neighbors[0][0][chan],
+                                     neighbors[0][1][chan],
+                                     neighbors[1][0][chan],
+                                     neighbors[1][1][chan]);
+   }
+}
+
+
+static void
+lp_build_sample_compare(struct lp_build_sample_context *bld,
+                        LLVMValueRef p,
+                        LLVMValueRef *texel)
+{
+   struct lp_build_context *texel_bld = &bld->texel_bld;
+   LLVMValueRef res;
+   unsigned chan;
+
+   if(!bld->static_state->compare_mode)
+      return;
+
+   /* TODO: Compare before swizzling, to avoid redundant computations */
+   res = NULL;
+   for(chan = 0; chan < 4; ++chan) {
+      LLVMValueRef cmp;
+      cmp = lp_build_cmp(texel_bld, bld->static_state->compare_func, p, texel[chan]);
+      cmp = lp_build_select(texel_bld, cmp, texel_bld->one, texel_bld->zero);
+
+      if(res)
+         res = lp_build_add(texel_bld, res, cmp);
+      else
+         res = cmp;
+   }
+
+   assert(res);
+   res = lp_build_mul(texel_bld, res, lp_build_const_scalar(texel_bld->type, 0.25));
+
+   /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */
+   for(chan = 0; chan < 3; ++chan)
+      texel[chan] = res;
+   texel[3] = texel_bld->one;
+}
+
+
+void
+lp_build_sample_soa(LLVMBuilderRef builder,
+                    const struct lp_sampler_static_state *static_state,
+                    struct lp_sampler_dynamic_state *dynamic_state,
+                    union lp_type type,
+                    unsigned unit,
+                    unsigned num_coords,
+                    const LLVMValueRef *coords,
+                    LLVMValueRef lodbias,
+                    LLVMValueRef *texel)
+{
+   struct lp_build_sample_context bld;
+   LLVMValueRef width;
+   LLVMValueRef height;
+   LLVMValueRef stride;
+   LLVMValueRef data_ptr;
+   LLVMValueRef s;
+   LLVMValueRef t;
+   LLVMValueRef p;
+
+   /* Setup our build context */
+   memset(&bld, 0, sizeof bld);
+   bld.builder = builder;
+   bld.static_state = static_state;
+   bld.dynamic_state = dynamic_state;
+   bld.format_desc = util_format_description(static_state->format);
+   bld.coord_type = type;
+   bld.int_coord_type = lp_int_type(type);
+   bld.texel_type = type;
+   lp_build_context_init(&bld.coord_bld, builder, bld.coord_type);
+   lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type);
+   lp_build_context_init(&bld.texel_bld, builder, bld.texel_type);
+
+   /* Get the dynamic state */
+   width = dynamic_state->width(dynamic_state, builder, unit);
+   height = dynamic_state->height(dynamic_state, builder, unit);
+   stride = dynamic_state->stride(dynamic_state, builder, unit);
+   data_ptr = dynamic_state->data_ptr(dynamic_state, builder, unit);
+
+   s = coords[0];
+   t = coords[1];
+   p = coords[2];
+
+   width = lp_build_broadcast_scalar(&bld.int_coord_bld, width);
+   height = lp_build_broadcast_scalar(&bld.int_coord_bld, height);
+   stride = lp_build_broadcast_scalar(&bld.int_coord_bld, stride);
+
+   if(static_state->target == PIPE_TEXTURE_1D)
+      t = bld.coord_bld.zero;
+
+   if(static_state->normalized_coords) {
+      LLVMTypeRef coord_vec_type = lp_build_vec_type(bld.coord_type);
+      LLVMValueRef fp_width = LLVMBuildSIToFP(builder, width, coord_vec_type, "");
+      LLVMValueRef fp_height = LLVMBuildSIToFP(builder, height, coord_vec_type, "");
+      s = lp_build_mul(&bld.coord_bld, s, fp_width);
+      t = lp_build_mul(&bld.coord_bld, t, fp_height);
+   }
+
+   switch (static_state->min_img_filter) {
+   case PIPE_TEX_FILTER_NEAREST:
+      lp_build_sample_2d_nearest_soa(&bld, s, t, width, height, stride, data_ptr, texel);
+      break;
+   case PIPE_TEX_FILTER_LINEAR:
+   case PIPE_TEX_FILTER_ANISO:
+      lp_build_sample_2d_linear_soa(&bld, s, t, width, height, stride, data_ptr, texel);
+      break;
+   default:
+      assert(0);
+   }
+
+   /* FIXME: respect static_state->min_mip_filter */;
+   /* FIXME: respect static_state->mag_img_filter */;
+   /* FIXME: respect static_state->prefilter */;
+
+   lp_build_sample_compare(&bld, p, texel);
+}

src/gallium/drivers/llvmpipe/lp_bld_struct.c

@@ -41,18 +41,31 @@
 #include "lp_bld_struct.h"
 
 
+LLVMValueRef
+lp_build_struct_get_ptr(LLVMBuilderRef builder,
+                        LLVMValueRef ptr,
+                        unsigned member,
+                        const char *name)
+{
+   LLVMValueRef indices[2];
+   LLVMValueRef member_ptr;
+   indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
+   indices[1] = LLVMConstInt(LLVMInt32Type(), member, 0);
+   member_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
+   lp_build_name(member_ptr, "%s.%s_ptr", LLVMGetValueName(ptr), name);
+   return member_ptr;
+}
+
+
 LLVMValueRef
 lp_build_struct_get(LLVMBuilderRef builder,
                     LLVMValueRef ptr,
                     unsigned member,
                     const char *name)
 {
-   LLVMValueRef indices[2];
    LLVMValueRef member_ptr;
    LLVMValueRef res;
-   indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
-   indices[1] = LLVMConstInt(LLVMInt32Type(), member, 0);
-   member_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
+   member_ptr = lp_build_struct_get_ptr(builder, ptr, member, name);
    res = LLVMBuildLoad(builder, member_ptr, "");
    lp_build_name(res, "%s.%s", LLVMGetValueName(ptr), name);
    return res;

src/gallium/drivers/llvmpipe/lp_bld_struct.h

@@ -53,6 +53,18 @@
              offsetof(_ctype, _cmember))
 
 
+/**
+ * Get value pointer to a structure member.
+ */
+LLVMValueRef
+lp_build_struct_get_ptr(LLVMBuilderRef builder,
+                        LLVMValueRef ptr,
+                        unsigned member,
+                        const char *name);
+
+/**
+ * Get the value of a structure member.
+ */
 LLVMValueRef
 lp_build_struct_get(LLVMBuilderRef builder,
                     LLVMValueRef ptr,

src/gallium/drivers/llvmpipe/lp_bld_tgsi.h

@@ -44,14 +44,30 @@ struct lp_build_context;
 struct lp_build_mask_context;
 
 
-typedef void
-(*lp_emit_fetch_texel_soa_callback)( LLVMBuilderRef builder,
-                                void *context,
-                                unsigned unit,
-                                unsigned num_coords,
-                                const LLVMValueRef *coords,
-                                LLVMValueRef lodbias,
-                                LLVMValueRef *texel);
+/**
+ * Sampler code generation interface.
+ *
+ * Although texture sampling is a requirement for TGSI translation, it is
+ * a very different problem with several different approaches to it. This
+ * structure establishes an interface for texture sampling code generation, so
+ * that we can easily use different texture sampling strategies.
+ */
+struct lp_build_sampler_soa
+{
+   void
+   (*destroy)( struct lp_build_sampler_soa *sampler );
+
+   void
+   (*emit_fetch_texel)( struct lp_build_sampler_soa *sampler,
+                        LLVMBuilderRef builder,
+                        union lp_type type,
+                        unsigned unit,
+                        unsigned num_coords,
+                        const LLVMValueRef *coords,
+                        LLVMValueRef lodbias,
+                        LLVMValueRef *texel);
+};
+
 
 void
 lp_build_tgsi_soa(LLVMBuilderRef builder,
@@ -62,8 +78,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
                   const LLVMValueRef *pos,
                   const LLVMValueRef (*inputs)[4],
                   LLVMValueRef (*outputs)[4],
-                  lp_emit_fetch_texel_soa_callback emit_fetch_texel,
-                  void *emit_fetch_texel_context);
+                  struct lp_build_sampler_soa *sampler);
 
 
 #endif /* LP_BLD_TGSI_H */

src/gallium/drivers/llvmpipe/lp_bld_tgsi_soa.c

@@ -88,8 +88,7 @@ struct lp_build_tgsi_soa_context
    const LLVMValueRef (*inputs)[NUM_CHANNELS];
    LLVMValueRef (*outputs)[NUM_CHANNELS];
 
-   lp_emit_fetch_texel_soa_callback emit_fetch_texel;
-   void *emit_fetch_texel_context;
+   struct lp_build_sampler_soa *sampler;
 
    LLVMValueRef immediates[LP_MAX_IMMEDIATES][NUM_CHANNELS];
    LLVMValueRef temps[LP_MAX_TEMPS][NUM_CHANNELS];
@@ -168,6 +167,7 @@ emit_fetch(
       break;
 
    case TGSI_UTIL_SIGN_SET:
+      /* TODO: Use bitwese OR for floating point */
       res = lp_build_abs( &bld->base, res );
       res = LLVMBuildNeg( bld->base.builder, res, "" );
       break;
@@ -289,8 +289,11 @@ emit_tex( struct lp_build_tgsi_soa_context *bld,
          coords[i] = lp_build_mul(&bld->base, coords[i], oow);
    }
 
-   bld->emit_fetch_texel(bld->base.builder, bld->emit_fetch_texel_context,
-                         unit, num_coords, coords, lodbias, texel);
+   bld->sampler->emit_fetch_texel(bld->sampler,
+                                  bld->base.builder,
+                                  bld->base.type,
+                                  unit, num_coords, coords, lodbias,
+                                  texel);
 
    FOR_EACH_DST0_ENABLED_CHANNEL( inst, i ) {
       emit_store( bld, inst, 0, i, texel[i] );
@@ -347,14 +350,6 @@ emit_kil(
 }
 
 
-static void
-emit_kilp(
-   struct lp_build_tgsi_soa_context *bld )
-{
-   /* XXX todo / fix me */
-}
-
-
 /**
  * Check if inst src/dest regs use indirect addressing into temporary
  * register file.
@@ -396,6 +391,7 @@ emit_instruction(
    switch (inst->Instruction.Opcode) {
 #if 0
    case TGSI_OPCODE_ARL:
+      /* FIXME */
       FOR_EACH_DST0_ENABLED_CHANNEL( inst, chan_index ) {
          tmp0 = emit_fetch( bld, inst, 0, chan_index );
          emit_flr(bld, 0, 0);
@@ -684,6 +680,7 @@ emit_instruction(
       break;
 
    case TGSI_OPCODE_CND:
+      /* FIXME */
       return 0;
       break;
 
@@ -847,13 +844,11 @@ emit_instruction(
       return 0;
       break;
 
-#if 0
    case TGSI_OPCODE_KILP:
       /* predicated kill */
-      emit_kilp( bld );
-      return 0; /* XXX fix me */
+      /* FIXME */
+      return 0;
       break;
-#endif
 
    case TGSI_OPCODE_KIL:
       /* conditional kill */
@@ -1283,8 +1278,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
                   const LLVMValueRef *pos,
                   const LLVMValueRef (*inputs)[NUM_CHANNELS],
                   LLVMValueRef (*outputs)[NUM_CHANNELS],
-                  lp_emit_fetch_texel_soa_callback emit_fetch_texel,
-                  void *emit_fetch_texel_context)
+                  struct lp_build_sampler_soa *sampler)
 {
    struct lp_build_tgsi_soa_context bld;
    struct tgsi_parse_context parse;
@@ -1299,8 +1293,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
    bld.inputs = inputs;
    bld.outputs = outputs;
    bld.consts_ptr = consts_ptr;
-   bld.emit_fetch_texel = emit_fetch_texel;
-   bld.emit_fetch_texel_context = emit_fetch_texel_context;
+   bld.sampler = sampler;
 
    tgsi_parse_init( &parse, tokens );
 
@@ -1309,7 +1302,7 @@ lp_build_tgsi_soa(LLVMBuilderRef builder,
 
       switch( parse.FullToken.Token.Type ) {
       case TGSI_TOKEN_TYPE_DECLARATION:
-         /* Input already interpolated */
+         /* Inputs already interpolated */
          break;
 
       case TGSI_TOKEN_TYPE_INSTRUCTION:

src/gallium/drivers/llvmpipe/lp_bld_type.c

@@ -157,6 +157,17 @@ lp_build_int_vec_type(union lp_type type)
 }
 
 
+union lp_type
+lp_int_type(union lp_type type)
+{
+   union lp_type int_type;
+   int_type.value = 0;
+   int_type.width = type.width;
+   int_type.length = type.length;
+   return int_type;
+}
+
+
 void
 lp_build_context_init(struct lp_build_context *bld,
                       LLVMBuilderRef builder,

src/gallium/drivers/llvmpipe/lp_bld_type.h

@@ -165,6 +165,10 @@ LLVMTypeRef
 lp_build_int_vec_type(union lp_type type);
 
 
+union lp_type
+lp_int_type(union lp_type type);
+
+
 void
 lp_build_context_init(struct lp_build_context *bld,
                       LLVMBuilderRef builder,

src/gallium/drivers/llvmpipe/lp_clear.c

@@ -67,6 +67,7 @@ llvmpipe_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
          util_pack_color(rgba, ps->format, &cv);
          lp_tile_cache_clear(llvmpipe->cbuf_cache[i], rgba, cv);
       }
+      llvmpipe->dirty_render_cache = TRUE;
    }
 
    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {

src/gallium/drivers/llvmpipe/lp_context.c

@@ -141,8 +141,6 @@ llvmpipe_is_texture_referenced( struct pipe_context *pipe,
          return PIPE_REFERENCED_FOR_WRITE;
    }
    
-   /* FIXME: we also need to do the same for the texture cache */
-   
    return PIPE_UNREFERENCED;
 }
 

src/gallium/drivers/llvmpipe/lp_jit.c

@@ -44,15 +44,47 @@
 static void
 lp_jit_init_globals(struct llvmpipe_screen *screen)
 {
-   /* struct lp_jit_context */
+   LLVMTypeRef texture_type;
+
+   /* struct lp_jit_texture */
    {
       LLVMTypeRef elem_types[4];
+
+      elem_types[LP_JIT_TEXTURE_WIDTH]  = LLVMInt32Type();
+      elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
+      elem_types[LP_JIT_TEXTURE_STRIDE] = LLVMInt32Type();
+      elem_types[LP_JIT_TEXTURE_DATA]   = LLVMPointerType(LLVMInt8Type(), 0);
+
+      texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
+
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
+                             screen->target, texture_type,
+                             LP_JIT_TEXTURE_WIDTH);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
+                             screen->target, texture_type,
+                             LP_JIT_TEXTURE_HEIGHT);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, stride,
+                             screen->target, texture_type,
+                             LP_JIT_TEXTURE_STRIDE);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
+                             screen->target, texture_type,
+                             LP_JIT_TEXTURE_DATA);
+      LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
+                           screen->target, texture_type);
+
+      LLVMAddTypeName(screen->module, "texture", texture_type);
+   }
+
+   /* struct lp_jit_context */
+   {
+      LLVMTypeRef elem_types[5];
       LLVMTypeRef context_type;
 
       elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
       elem_types[1] = LLVMPointerType(LLVMInt8Type(), 0);  /* samplers */
       elem_types[2] = LLVMFloatType();                     /* alpha_ref_value */
       elem_types[3] = LLVMPointerType(LLVMInt8Type(), 0);  /* blend_color */
+      elem_types[4] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */
 
       context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
 
@@ -64,6 +96,9 @@ lp_jit_init_globals(struct llvmpipe_screen *screen)
                              screen->target, context_type, 2);
       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
                              screen->target, context_type, 3);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
+                             screen->target, context_type,
+                             LP_JIT_CONTEXT_TEXTURES_INDEX);
       LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
                            screen->target, context_type);
 

src/gallium/drivers/llvmpipe/lp_jit.h

@@ -38,11 +38,31 @@
 
 #include "lp_bld_struct.h"
 
+#include "pipe/p_state.h"
+
 
 struct tgsi_sampler;
 struct llvmpipe_screen;
 
 
+struct lp_jit_texture
+{
+   uint32_t width;
+   uint32_t height;
+   uint32_t stride;
+   const void *data;
+};
+
+
+enum {
+   LP_JIT_TEXTURE_WIDTH = 0,
+   LP_JIT_TEXTURE_HEIGHT,
+   LP_JIT_TEXTURE_STRIDE,
+   LP_JIT_TEXTURE_DATA
+};
+
+
+
 /**
  * This structure is passed directly to the generated fragment shader.
  *
@@ -60,11 +80,12 @@ struct lp_jit_context
 
    struct tgsi_sampler **samplers;
 
-   /* TODO: alpha reference value */
    float alpha_ref_value;
 
-   /* TODO: blend constant color */
+   /* FIXME: store (also?) in floats */
    uint8_t *blend_color;
+
+   struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
 };
 
 
@@ -80,6 +101,11 @@ struct lp_jit_context
 #define lp_jit_context_blend_color(_builder, _ptr) \
    lp_build_struct_get(_builder, _ptr, 3, "blend_color")
 
+#define LP_JIT_CONTEXT_TEXTURES_INDEX 4
+
+#define lp_jit_context_textures(_builder, _ptr) \
+   lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES_INDEX, "textures")
+
 
 typedef void
 (*lp_jit_frag_func)(struct lp_jit_context *context,

src/gallium/drivers/llvmpipe/lp_setup.c

@@ -44,6 +44,7 @@
 #include "pipe/p_thread.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
+#include "lp_bld_debug.h"
 #include "lp_tile_cache.h"
 #include "lp_tile_soa.h"
 
@@ -162,12 +163,12 @@ shade_quads(struct llvmpipe_context *llvmpipe,
    else
       depth = NULL;
 
-   /* TODO: blend color */
+   /* XXX: This will most likely fail on 32bit x86 without -mstackrealign */
+   assert(lp_check_alignment(mask, 16));
 
-   assert((((uintptr_t)mask) & 0xf) == 0);
-   assert((((uintptr_t)depth) & 0xf) == 0);
-   assert((((uintptr_t)color) & 0xf) == 0);
-   assert((((uintptr_t)llvmpipe->jit_context.blend_color) & 0xf) == 0);
+   assert(lp_check_alignment(depth, 16));
+   assert(lp_check_alignment(color, 16));
+   assert(lp_check_alignment(llvmpipe->jit_context.blend_color, 16));
 
    /* run shader */
    fs->current->jit_function( &llvmpipe->jit_context,

src/gallium/drivers/llvmpipe/lp_state.h

@@ -36,6 +36,7 @@
 #include "pipe/p_state.h"
 #include "tgsi/tgsi_scan.h"
 #include "lp_jit.h"
+#include "lp_bld_sample.h" /* for struct lp_sampler_static_state */
 
 
 #define LP_NEW_VIEWPORT      0x1
@@ -57,16 +58,20 @@
 
 struct tgsi_sampler;
 struct vertex_info;
-
+struct pipe_context;
+struct llvmpipe_context;
 
 struct lp_fragment_shader;
 
 
 struct lp_fragment_shader_variant_key
 {
+   enum pipe_format zsbuf_format;
    struct pipe_depth_state depth;
    struct pipe_alpha_state alpha;
    struct pipe_blend_state blend;
+
+   struct lp_sampler_static_state sampler[PIPE_MAX_SAMPLERS];
 };
 
 

src/gallium/drivers/llvmpipe/lp_state_derived.c

@@ -250,7 +250,9 @@ void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
 
    if (llvmpipe->dirty & (LP_NEW_FS |
                           LP_NEW_BLEND |
-                          LP_NEW_DEPTH_STENCIL_ALPHA))
+                          LP_NEW_DEPTH_STENCIL_ALPHA |
+                          LP_NEW_SAMPLER |
+                          LP_NEW_TEXTURE))
       llvmpipe_update_fs( llvmpipe );
 
 

src/gallium/drivers/llvmpipe/lp_state_fs.c

@@ -85,6 +85,7 @@
 #include "lp_context.h"
 #include "lp_state.h"
 #include "lp_quad.h"
+#include "lp_tex_sample.h"
 
 
 static const unsigned char quad_offset_x[4] = {0, 1, 0, 1};
@@ -130,9 +131,8 @@ generate_pos0(LLVMBuilderRef builder,
  * Generate the depth test.
  */
 static void
-generate_depth(struct llvmpipe_context *lp,
-               LLVMBuilderRef builder,
-               const struct pipe_depth_state *state,
+generate_depth(LLVMBuilderRef builder,
+               const struct lp_fragment_shader_variant_key *key,
                union lp_type src_type,
                struct lp_build_mask_context *mask,
                LLVMValueRef src,
@@ -141,10 +141,10 @@ generate_depth(struct llvmpipe_context *lp,
    const struct util_format_description *format_desc;
    union lp_type dst_type;
 
-   if(!lp->framebuffer.zsbuf)
+   if(!key->depth.enabled)
       return;
 
-   format_desc = util_format_description(lp->framebuffer.zsbuf->format);
+   format_desc = util_format_description(key->zsbuf_format);
    assert(format_desc);
 
    /* Pick the depth type. */
@@ -164,7 +164,7 @@ generate_depth(struct llvmpipe_context *lp,
 #endif
 
    lp_build_depth_test(builder,
-                       state,
+                       &key->depth,
                        dst_type,
                        format_desc,
                        mask,
@@ -173,107 +173,6 @@ generate_depth(struct llvmpipe_context *lp,
 }
 
 
-struct build_fetch_texel_context
-{
-   LLVMValueRef context_ptr;
-
-   LLVMValueRef samplers_ptr;
-
-   /** Coords/texels store */
-   LLVMValueRef store_ptr;
-};
-
-
-void PIPE_CDECL
-lp_fetch_texel_soa( struct tgsi_sampler **samplers,
-                    uint32_t unit,
-                    float *store )
-{
-   struct tgsi_sampler *sampler = samplers[unit];
-
-#if 0
-   uint j;
-
-   debug_printf("%s sampler: %p (%p) store: %p\n",
-                __FUNCTION__,
-                sampler, *sampler,
-                store );
-
-   debug_printf("lodbias %f\n", store[12]);
-
-   for (j = 0; j < 4; j++)
-      debug_printf("sample %d texcoord %f %f\n",
-                   j,
-                   store[0+j],
-                   store[4+j]);
-#endif
-
-   {
-      float rgba[NUM_CHANNELS][QUAD_SIZE];
-      sampler->get_samples(sampler,
-                           &store[0],
-                           &store[4],
-                           &store[8],
-                           0.0f, /*store[12],  lodbias */
-                           rgba);
-      memcpy(store, rgba, sizeof rgba);
-   }
-
-#if 0
-   for (j = 0; j < 4; j++)
-      debug_printf("sample %d result %f %f %f %f\n",
-                   j,
-                   store[0+j],
-                   store[4+j],
-                   store[8+j],
-                   store[12+j]);
-#endif
-}
-
-
-static void
-emit_fetch_texel( LLVMBuilderRef builder,
-                  void *context,
-                  unsigned unit,
-                  unsigned num_coords,
-                  const LLVMValueRef *coords,
-                  LLVMValueRef lodbias,
-                  LLVMValueRef *texel)
-{
-   struct build_fetch_texel_context *bld = context;
-   LLVMTypeRef vec_type = LLVMTypeOf(coords[0]);
-   LLVMValueRef args[3];
-   unsigned i;
-
-   if(!bld->samplers_ptr)
-      bld->samplers_ptr = lp_jit_context_samplers(builder, bld->context_ptr);
-
-   if(!bld->store_ptr)
-      bld->store_ptr = LLVMBuildArrayAlloca(builder,
-                                            vec_type,
-                                            LLVMConstInt(LLVMInt32Type(), 4, 0),
-                                            "texel_store");
-
-   for (i = 0; i < num_coords; i++) {
-      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
-      LLVMValueRef coord_ptr = LLVMBuildGEP(builder, bld->store_ptr, &index, 1, "");
-      LLVMBuildStore(builder, coords[i], coord_ptr);
-   }
-
-   args[0] = bld->samplers_ptr;
-   args[1] = LLVMConstInt(LLVMInt32Type(), unit, 0);
-   args[2] = bld->store_ptr;
-
-   lp_build_intrinsic(builder, "fetch_texel", LLVMVoidType(), args, 3);
-
-   for (i = 0; i < NUM_CHANNELS; ++i) {
-      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
-      LLVMValueRef texel_ptr = LLVMBuildGEP(builder, bld->store_ptr, &index, 1, "");
-      texel[i] = LLVMBuildLoad(builder, texel_ptr, "");
-   }
-}
-
-
 /**
  * Generate the fragment shader, depth/stencil test, and alpha tests.
  */
@@ -286,7 +185,7 @@ generate_fs(struct llvmpipe_context *lp,
             LLVMValueRef context_ptr,
             unsigned i,
             const struct lp_build_interp_soa_context *interp,
-            struct build_fetch_texel_context *sampler,
+            struct lp_build_sampler_soa *sampler,
             LLVMValueRef *pmask,
             LLVMValueRef *color,
             LLVMValueRef depth_ptr)
@@ -298,6 +197,7 @@ generate_fs(struct llvmpipe_context *lp,
    LLVMValueRef consts_ptr;
    LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][NUM_CHANNELS];
    LLVMValueRef z = interp->pos[2];
+   struct lp_build_flow_context *flow;
    struct lp_build_mask_context mask;
    boolean early_depth_test;
    unsigned attrib;
@@ -309,25 +209,35 @@ generate_fs(struct llvmpipe_context *lp,
 
    consts_ptr = lp_jit_context_constants(builder, context_ptr);
 
-   lp_build_mask_begin(&mask, builder, type, *pmask);
-
-   early_depth_test =
-      lp->depth_stencil->depth.enabled &&
-      lp->framebuffer.zsbuf &&
-      !lp->depth_stencil->alpha.enabled &&
-      !lp->fs->info.uses_kill &&
-      !lp->fs->info.writes_z;
-
-   if(early_depth_test)
-      generate_depth(lp, builder, &key->depth,
-                     type, &mask,
-                     z, depth_ptr);
+   flow = lp_build_flow_create(builder);
 
    memset(outputs, 0, sizeof outputs);
 
+   lp_build_flow_scope_begin(flow);
+
+   /* Declare the color and z variables */
+   for(chan = 0; chan < NUM_CHANNELS; ++chan) {
+      color[chan] = LLVMGetUndef(vec_type);
+      lp_build_flow_scope_declare(flow, &color[chan]);
+   }
+   lp_build_flow_scope_declare(flow, &z);
+
+   lp_build_mask_begin(&mask, flow, type, *pmask);
+
+   early_depth_test =
+      key->depth.enabled &&
+      !key->alpha.enabled &&
+      !shader->info.uses_kill &&
+      !shader->info.writes_z;
+
+   if(early_depth_test)
+      generate_depth(builder, key,
+                     type, &mask,
+                     z, depth_ptr);
+
    lp_build_tgsi_soa(builder, tokens, type, &mask,
                      consts_ptr, interp->pos, interp->inputs,
-                     outputs, emit_fetch_texel, sampler);
+                     outputs, sampler);
 
    for (attrib = 0; attrib < shader->info.num_outputs; ++attrib) {
       for(chan = 0; chan < NUM_CHANNELS; ++chan) {
@@ -368,12 +278,16 @@ generate_fs(struct llvmpipe_context *lp,
    }
 
    if(!early_depth_test)
-      generate_depth(lp, builder, &key->depth,
+      generate_depth(builder, key,
                      type, &mask,
                      z, depth_ptr);
 
    lp_build_mask_end(&mask);
 
+   lp_build_flow_scope_end(flow);
+
+   lp_build_flow_destroy(flow);
+
    *pmask = mask.value;
 
 }
@@ -392,6 +306,8 @@ generate_blend(const struct pipe_blend_state *blend,
                LLVMValueRef dst_ptr)
 {
    struct lp_build_context bld;
+   struct lp_build_flow_context *flow;
+   struct lp_build_mask_context mask_ctx;
    LLVMTypeRef vec_type;
    LLVMTypeRef int_vec_type;
    LLVMValueRef const_ptr;
@@ -400,11 +316,14 @@ generate_blend(const struct pipe_blend_state *blend,
    LLVMValueRef res[4];
    unsigned chan;
 
+   lp_build_context_init(&bld, builder, type);
+
+   flow = lp_build_flow_create(builder);
+   lp_build_mask_begin(&mask_ctx, flow, type, mask);
+
    vec_type = lp_build_vec_type(type);
    int_vec_type = lp_build_int_vec_type(type);
 
-   lp_build_context_init(&bld, builder, type);
-
    const_ptr = lp_jit_context_blend_color(builder, context_ptr);
    const_ptr = LLVMBuildBitCast(builder, const_ptr,
                                 LLVMPointerType(vec_type, 0), "");
@@ -422,11 +341,16 @@ generate_blend(const struct pipe_blend_state *blend,
    lp_build_blend_soa(builder, blend, type, src, dst, con, res);
 
    for(chan = 0; chan < 4; ++chan) {
-      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), chan, 0);
-      lp_build_name(res[chan], "res.%c", "rgba"[chan]);
-      res[chan] = lp_build_select(&bld, mask, res[chan], dst[chan]);
-      LLVMBuildStore(builder, res[chan], LLVMBuildGEP(builder, dst_ptr, &index, 1, ""));
+      if(blend->colormask & (1 << chan)) {
+         LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), chan, 0);
+         lp_build_name(res[chan], "res.%c", "rgba"[chan]);
+         res[chan] = lp_build_select(&bld, mask, res[chan], dst[chan]);
+         LLVMBuildStore(builder, res[chan], LLVMBuildGEP(builder, dst_ptr, &index, 1, ""));
+      }
    }
+
+   lp_build_mask_end(&mask_ctx);
+   lp_build_flow_destroy(flow);
 }
 
 
@@ -462,7 +386,7 @@ generate_fragment(struct llvmpipe_context *lp,
    LLVMBuilderRef builder;
    LLVMValueRef x0;
    LLVMValueRef y0;
-   struct build_fetch_texel_context sampler;
+   struct lp_build_sampler_soa *sampler;
    struct lp_build_interp_soa_context interp;
    LLVMValueRef fs_mask[LP_MAX_VECTOR_LENGTH];
    LLVMValueRef fs_out_color[NUM_CHANNELS][LP_MAX_VECTOR_LENGTH];
@@ -586,8 +510,13 @@ generate_fragment(struct llvmpipe_context *lp,
                             a0_ptr, dadx_ptr, dady_ptr,
                             x0, y0, 2, 0);
 
-   memset(&sampler, 0, sizeof sampler);
-   sampler.context_ptr = context_ptr;
+#if 0
+   /* C texture sampling */
+   sampler = lp_c_sampler_soa_create(context_ptr);
+#else
+   /* code generated texture sampling */
+   sampler = lp_llvm_sampler_soa_create(key->sampler, context_ptr);
+#endif
 
    for(i = 0; i < num_fs; ++i) {
       LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
@@ -606,7 +535,7 @@ generate_fragment(struct llvmpipe_context *lp,
                   context_ptr,
                   i,
                   &interp,
-                  &sampler,
+                  sampler,
                   &fs_mask[i],
                   out_color,
                   depth_ptr_i);
@@ -615,6 +544,8 @@ generate_fragment(struct llvmpipe_context *lp,
          fs_out_color[chan][i] = out_color[chan];
    }
 
+   sampler->destroy(sampler);
+
    /* 
     * Convert the fs's output color and mask to fit to the blending type. 
     */
@@ -765,18 +696,45 @@ llvmpipe_set_constant_buffer(struct pipe_context *pipe,
  */
 static void
 make_variant_key(struct llvmpipe_context *lp,
+                 struct lp_fragment_shader *shader,
                  struct lp_fragment_shader_variant_key *key)
 {
+   unsigned i;
+
    memset(key, 0, sizeof *key);
 
-   memcpy(&key->depth, &lp->depth_stencil->depth, sizeof key->depth);
+   if(lp->framebuffer.zsbuf &&
+      lp->depth_stencil->depth.enabled) {
+      key->zsbuf_format = lp->framebuffer.zsbuf->format;
+      memcpy(&key->depth, &lp->depth_stencil->depth, sizeof key->depth);
+   }
 
    key->alpha.enabled = lp->depth_stencil->alpha.enabled;
    if(key->alpha.enabled)
       key->alpha.func = lp->depth_stencil->alpha.func;
    /* alpha.ref_value is passed in jit_context */
 
-   memcpy(&key->blend, lp->blend, sizeof key->blend);
+   if(lp->framebuffer.cbufs[0]) {
+      const struct util_format_description *format_desc;
+      unsigned chan;
+
+      memcpy(&key->blend, lp->blend, sizeof key->blend);
+
+      format_desc = util_format_description(lp->framebuffer.cbufs[0]->format);
+      assert(format_desc->layout == UTIL_FORMAT_COLORSPACE_RGB ||
+             format_desc->layout == UTIL_FORMAT_COLORSPACE_SRGB);
+
+      /* mask out color channels not present in the color buffer */
+      for(chan = 0; chan < 4; ++chan) {
+         enum util_format_swizzle swizzle = format_desc->swizzle[chan];
+         if(swizzle > 4)
+            key->blend.colormask &= ~(1 << chan);
+      }
+   }
+
+   for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
+      if(shader->info.file_mask[TGSI_FILE_SAMPLER] & (1 << i))
+         lp_sampler_static_state(&key->sampler[i], lp->texture[i], lp->sampler[i]);
 }
 
 
@@ -787,7 +745,7 @@ llvmpipe_update_fs(struct llvmpipe_context *lp)
    struct lp_fragment_shader_variant_key key;
    struct lp_fragment_shader_variant *variant;
 
-   make_variant_key(lp, &key);
+   make_variant_key(lp, shader, &key);
 
    variant = shader->variants;
    while(variant) {

src/gallium/drivers/llvmpipe/lp_state_sampler.c

@@ -98,6 +98,16 @@ llvmpipe_set_sampler_textures(struct pipe_context *pipe,
 
       pipe_texture_reference(&llvmpipe->texture[i], tex);
       lp_tex_tile_cache_set_texture(llvmpipe->tex_cache[i], tex);
+
+      if(tex) {
+         struct llvmpipe_texture *lp_tex = llvmpipe_texture(tex);
+         struct lp_jit_texture *jit_tex = &llvmpipe->jit_context.textures[i];
+         jit_tex->width = tex->width[0];
+         jit_tex->height = tex->height[0];
+         jit_tex->stride = lp_tex->stride[0];
+         if(!lp_tex->dt)
+            jit_tex->data = lp_tex->data;
+      }
    }
 
    llvmpipe->num_textures = num;

src/gallium/drivers/llvmpipe/lp_test_format.c

@@ -119,7 +119,7 @@ add_load_rgba_test(LLVMModuleRef module,
 
    lp_build_loop_begin(builder, LLVMConstInt(LLVMInt32Type(), 1, 0), &loop);
 
-   rgba = lp_build_load_rgba(builder, format, ptr);
+   rgba = lp_build_load_rgba_aos(builder, format, ptr);
    LLVMBuildStore(builder, rgba, rgba_ptr);
 
    lp_build_loop_end(builder, LLVMConstInt(LLVMInt32Type(), 4, 0), NULL, &loop);
@@ -160,7 +160,7 @@ add_store_rgba_test(LLVMModuleRef module,
 
    rgba = LLVMBuildLoad(builder, rgba_ptr, "");
 
-   lp_build_store_rgba(builder, format, ptr, rgba);
+   lp_build_store_rgba_aos(builder, format, ptr, rgba);
 
    LLVMBuildRetVoid(builder);
 

src/gallium/drivers/llvmpipe/lp_tex_cache.c

@@ -154,7 +154,7 @@ lp_tex_tile_cache_validate_texture(struct llvmpipe_tex_tile_cache *tc)
       if (lpt->timestamp != tc->timestamp) {
          /* texture was modified, invalidate all cached tiles */
          uint i;
-         _debug_printf("INV %d %d\n", tc->timestamp, lpt->timestamp);
+         debug_printf("INV %d %d\n", tc->timestamp, lpt->timestamp);
          for (i = 0; i < NUM_ENTRIES; i++) {
             tc->entries[i].addr.bits.invalid = 1;
          }

src/gallium/drivers/llvmpipe/lp_tex_sample.h

@@ -29,10 +29,13 @@
 #define LP_TEX_SAMPLE_H
 
 
+#include <llvm-c/Core.h>
+
 #include "tgsi/tgsi_exec.h"
 
 
 struct llvmpipe_tex_tile_cache;
+struct lp_sampler_static_state;
 
 
 /**
@@ -75,4 +78,24 @@ lp_get_samples(struct tgsi_sampler *tgsi_sampler,
                float rgba[NUM_CHANNELS][QUAD_SIZE]);
 
 
+/**
+ * Texture sampling code generator that just calls lp_get_samples C function
+ * for the actual sampling computation.
+ *
+ * @param context_ptr LLVM value with the pointer to the struct lp_jit_context.
+ */
+struct lp_build_sampler_soa *
+lp_c_sampler_soa_create(LLVMValueRef context_ptr);
+
+
+/**
+ * Pure-LLVM texture sampling code generator.
+ *
+ * @param context_ptr LLVM value with the pointer to the struct lp_jit_context.
+ */
+struct lp_build_sampler_soa *
+lp_llvm_sampler_soa_create(const struct lp_sampler_static_state *key,
+                           LLVMValueRef context_ptr);
+
+
 #endif /* LP_TEX_SAMPLE_H */

src/gallium/drivers/llvmpipe/lp_tex_sample_c.c

@@ -1578,3 +1578,136 @@ out:
    tgsi_sampler->get_samples( tgsi_sampler, s, t, p, lodbias, rgba );
 }
 
+
+void PIPE_CDECL
+lp_fetch_texel_soa( struct tgsi_sampler **samplers,
+                    uint32_t unit,
+                    float *store )
+{
+   struct tgsi_sampler *sampler = samplers[unit];
+
+#if 0
+   uint j;
+
+   debug_printf("%s sampler: %p (%p) store: %p\n",
+                __FUNCTION__,
+                sampler, *sampler,
+                store );
+
+   debug_printf("lodbias %f\n", store[12]);
+
+   for (j = 0; j < 4; j++)
+      debug_printf("sample %d texcoord %f %f\n",
+                   j,
+                   store[0+j],
+                   store[4+j]);
+#endif
+
+   {
+      float rgba[NUM_CHANNELS][QUAD_SIZE];
+      sampler->get_samples(sampler,
+                           &store[0],
+                           &store[4],
+                           &store[8],
+                           0.0f, /*store[12],  lodbias */
+                           rgba);
+      memcpy(store, rgba, sizeof rgba);
+   }
+
+#if 0
+   for (j = 0; j < 4; j++)
+      debug_printf("sample %d result %f %f %f %f\n",
+                   j,
+                   store[0+j],
+                   store[4+j],
+                   store[8+j],
+                   store[12+j]);
+#endif
+}
+
+
+#include "lp_bld_type.h"
+#include "lp_bld_intr.h"
+#include "lp_bld_tgsi.h"
+
+
+struct lp_c_sampler_soa
+{
+   struct lp_build_sampler_soa base;
+
+   LLVMValueRef context_ptr;
+
+   LLVMValueRef samplers_ptr;
+
+   /** Coords/texels store */
+   LLVMValueRef store_ptr;
+};
+
+
+static void
+lp_c_sampler_soa_destroy(struct lp_build_sampler_soa *sampler)
+{
+   FREE(sampler);
+}
+
+
+static void
+lp_c_sampler_soa_emit_fetch_texel(struct lp_build_sampler_soa *_sampler,
+                                  LLVMBuilderRef builder,
+                                  union lp_type type,
+                                  unsigned unit,
+                                  unsigned num_coords,
+                                  const LLVMValueRef *coords,
+                                  LLVMValueRef lodbias,
+                                  LLVMValueRef *texel)
+{
+   struct lp_c_sampler_soa *sampler = (struct lp_c_sampler_soa *)_sampler;
+   LLVMTypeRef vec_type = LLVMTypeOf(coords[0]);
+   LLVMValueRef args[3];
+   unsigned i;
+
+   if(!sampler->samplers_ptr)
+      sampler->samplers_ptr = lp_jit_context_samplers(builder, sampler->context_ptr);
+
+   if(!sampler->store_ptr)
+      sampler->store_ptr = LLVMBuildArrayAlloca(builder,
+                                            vec_type,
+                                            LLVMConstInt(LLVMInt32Type(), 4, 0),
+                                            "texel_store");
+
+   for (i = 0; i < num_coords; i++) {
+      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      LLVMValueRef coord_ptr = LLVMBuildGEP(builder, sampler->store_ptr, &index, 1, "");
+      LLVMBuildStore(builder, coords[i], coord_ptr);
+   }
+
+   args[0] = sampler->samplers_ptr;
+   args[1] = LLVMConstInt(LLVMInt32Type(), unit, 0);
+   args[2] = sampler->store_ptr;
+
+   lp_build_intrinsic(builder, "fetch_texel", LLVMVoidType(), args, 3);
+
+   for (i = 0; i < NUM_CHANNELS; ++i) {
+      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      LLVMValueRef texel_ptr = LLVMBuildGEP(builder, sampler->store_ptr, &index, 1, "");
+      texel[i] = LLVMBuildLoad(builder, texel_ptr, "");
+   }
+}
+
+
+struct lp_build_sampler_soa *
+lp_c_sampler_soa_create(LLVMValueRef context_ptr)
+{
+   struct lp_c_sampler_soa *sampler;
+
+   sampler = CALLOC_STRUCT(lp_c_sampler_soa);
+   if(!sampler)
+      return NULL;
+
+   sampler->base.destroy = lp_c_sampler_soa_destroy;
+   sampler->base.emit_fetch_texel = lp_c_sampler_soa_emit_fetch_texel;
+   sampler->context_ptr = context_ptr;
+
+   return &sampler->base;
+}
+

src/gallium/drivers/llvmpipe/lp_tex_sample_llvm.c

@@ -0,0 +1,196 @@
+/**************************************************************************
+ * 
+ * Copyright 2009 VMware, Inc.
+ * 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, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+/**
+ * Texture sampling code generation
+ *
+ * This file is nothing more than ugly glue between three largely independent
+ * entities:
+ * - TGSI -> LLVM translation (i.e., lp_build_tgsi_soa)
+ * - texture sampling code generation (i.e., lp_build_sample_soa)
+ * - LLVM pipe driver
+ *
+ * All interesting code is in the functions mentioned above. There is really
+ * nothing to see here.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
+#include "lp_bld_debug.h"
+#include "lp_bld_type.h"
+#include "lp_bld_intr.h"
+#include "lp_bld_sample.h"
+#include "lp_bld_tgsi.h"
+#include "lp_state.h"
+#include "lp_tex_sample.h"
+
+
+/**
+ * This provides the bridge between the sampler state store in lp_jit_context
+ * and lp_jit_texture and the sampler code generator. It provides the
+ * texture layout information required by the texture sampler code generator
+ * in terms of the state stored in lp_jit_context and lp_jit_texture in runtime.
+ */
+struct llvmpipe_sampler_dynamic_state
+{
+   struct lp_sampler_dynamic_state base;
+
+   const struct lp_sampler_static_state *static_state;
+
+   LLVMValueRef context_ptr;
+};
+
+
+/**
+ * This is the bridge between our sampler and the TGSI translator.
+ */
+struct lp_llvm_sampler_soa
+{
+   struct lp_build_sampler_soa base;
+
+   struct llvmpipe_sampler_dynamic_state dynamic_state;
+};
+
+
+/**
+ * Fetch the specified member of the lp_jit_texture structure.
+ *
+ * @sa http://llvm.org/docs/GetElementPtr.html
+ */
+static LLVMValueRef
+lp_llvm_texture_member(struct lp_sampler_dynamic_state *base,
+                       LLVMBuilderRef builder,
+                       unsigned unit,
+                       unsigned member_index,
+                       const char *member_name)
+{
+   struct llvmpipe_sampler_dynamic_state *state = (struct llvmpipe_sampler_dynamic_state *)base;
+   LLVMValueRef indices[4];
+   LLVMValueRef ptr;
+   LLVMValueRef res;
+
+   assert(unit < PIPE_MAX_SAMPLERS);
+
+   /* context[0] */
+   indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
+   /* context[0].textures */
+   indices[1] = LLVMConstInt(LLVMInt32Type(), LP_JIT_CONTEXT_TEXTURES_INDEX, 0);
+   /* context[0].textures[unit] */
+   indices[2] = LLVMConstInt(LLVMInt32Type(), unit, 0);
+   /* context[0].textures[unit].member */
+   indices[3] = LLVMConstInt(LLVMInt32Type(), member_index, 0);
+
+   ptr = LLVMBuildGEP(builder, state->context_ptr, indices, Elements(indices), "");
+
+   res = LLVMBuildLoad(builder, ptr, "");
+
+   lp_build_name(res, "context.texture%u.%s", unit, member_name);
+
+   return res;
+}
+
+
+/**
+ * Helper macro to instantiate the functions that generate the code to fetch
+ * the members of lp_jit_texture to fulfill the sampler code generator requests.
+ *
+ * This complexity is the price we have to pay to keep the texture sampler code
+ * generator a reusable module without dependencies to llvmpipe internals.
+ */
+#define LP_LLVM_TEXTURE_MEMBER(_name, _index) \
+   static LLVMValueRef \
+   lp_llvm_texture_##_name( struct lp_sampler_dynamic_state *base, \
+                            LLVMBuilderRef builder, \
+                            unsigned unit) \
+   { \
+      return lp_llvm_texture_member(base, builder, unit, _index, #_name ); \
+   }
+
+
+LP_LLVM_TEXTURE_MEMBER(width,    LP_JIT_TEXTURE_WIDTH)
+LP_LLVM_TEXTURE_MEMBER(height,   LP_JIT_TEXTURE_HEIGHT)
+LP_LLVM_TEXTURE_MEMBER(stride,   LP_JIT_TEXTURE_STRIDE)
+LP_LLVM_TEXTURE_MEMBER(data_ptr, LP_JIT_TEXTURE_DATA)
+
+
+static void
+lp_llvm_sampler_soa_destroy(struct lp_build_sampler_soa *sampler)
+{
+   FREE(sampler);
+}
+
+
+static void
+lp_llvm_sampler_soa_emit_fetch_texel(struct lp_build_sampler_soa *base,
+                                     LLVMBuilderRef builder,
+                                     union lp_type type,
+                                     unsigned unit,
+                                     unsigned num_coords,
+                                     const LLVMValueRef *coords,
+                                     LLVMValueRef lodbias,
+                                     LLVMValueRef *texel)
+{
+   struct lp_llvm_sampler_soa *sampler = (struct lp_llvm_sampler_soa *)base;
+
+   assert(unit < PIPE_MAX_SAMPLERS);
+
+   lp_build_sample_soa(builder,
+                       &sampler->dynamic_state.static_state[unit],
+                       &sampler->dynamic_state.base,
+                       type,
+                       unit,
+                       num_coords,
+                       coords,
+                       lodbias,
+                       texel);
+}
+
+
+struct lp_build_sampler_soa *
+lp_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
+                           LLVMValueRef context_ptr)
+{
+   struct lp_llvm_sampler_soa *sampler;
+
+   sampler = CALLOC_STRUCT(lp_llvm_sampler_soa);
+   if(!sampler)
+      return NULL;
+
+   sampler->base.destroy = lp_llvm_sampler_soa_destroy;
+   sampler->base.emit_fetch_texel = lp_llvm_sampler_soa_emit_fetch_texel;
+   sampler->dynamic_state.base.width = lp_llvm_texture_width;
+   sampler->dynamic_state.base.height = lp_llvm_texture_height;
+   sampler->dynamic_state.base.stride = lp_llvm_texture_stride;
+   sampler->dynamic_state.base.data_ptr = lp_llvm_texture_data_ptr;
+   sampler->dynamic_state.static_state = static_state;
+   sampler->dynamic_state.context_ptr = context_ptr;
+
+   return &sampler->base;
+}
+

src/gallium/drivers/nv50/nv50_miptree.c

@@ -148,6 +148,7 @@ nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 	mt->image_nr = 1;
 	mt->level[0].pitch = *stride;
 	mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
+	mt->level[0].tile_mode = bo->tile_mode;
 
 	nouveau_bo_ref(bo, &mt->base.bo);
 	return &mt->base.base;

src/gallium/drivers/nv50/nv50_state_validate.c

@@ -66,7 +66,8 @@ nv50_state_validate_fb(struct nv50_context *nv50)
 			so_data(so, NV50TCL_RT_FORMAT_X8R8G8B8_UNORM);
 			break;
 		}
-		so_data(so, bo->tile_mode << 4);
+		so_data(so, nv50_miptree(pt)->
+				level[fb->cbufs[i]->level].tile_mode << 4);
 		so_data(so, 0x00000000);
 
 		so_method(so, tesla, 0x1224, 1);
@@ -110,7 +111,8 @@ nv50_state_validate_fb(struct nv50_context *nv50)
 			so_data(so, NV50TCL_ZETA_FORMAT_S8Z24_UNORM);
 			break;
 		}
-		so_data(so, bo->tile_mode << 4);
+		so_data(so, nv50_miptree(pt)->
+				level[fb->zsbuf->level].tile_mode << 4);
 		so_data(so, 0x00000000);
 
 		so_method(so, tesla, 0x1538, 1);

src/gallium/drivers/nv50/nv50_surface.c

@@ -60,13 +60,13 @@ nv50_surface_set(struct nv50_screen *screen, struct pipe_surface *ps, int dst)
  	format = nv50_format(ps->format);
  	if (format < 0)
  		return 1;
-  
+
  	if (!bo->tile_flags) {
  		BEGIN_RING(chan, eng2d, mthd, 2);
  		OUT_RING  (chan, format);
  		OUT_RING  (chan, 1);
  		BEGIN_RING(chan, eng2d, mthd + 0x14, 5);
- 		OUT_RING  (chan, mt->level[0].pitch);
+		OUT_RING  (chan, mt->level[ps->level].pitch);
  		OUT_RING  (chan, ps->width);
  		OUT_RING  (chan, ps->height);
  		OUT_RELOCh(chan, bo, ps->offset, flags);
@@ -75,7 +75,7 @@ nv50_surface_set(struct nv50_screen *screen, struct pipe_surface *ps, int dst)
  		BEGIN_RING(chan, eng2d, mthd, 5);
  		OUT_RING  (chan, format);
  		OUT_RING  (chan, 0);
- 		OUT_RING  (chan, bo->tile_mode << 4);
+		OUT_RING  (chan, mt->level[ps->level].tile_mode << 4);
  		OUT_RING  (chan, 1);
  		OUT_RING  (chan, 0);
  		BEGIN_RING(chan, eng2d, mthd + 0x18, 4);