import MesaDemos version 6.5.2

dist/Mesa/progs/demos/Makefile

@@ -25,6 +25,7 @@ PROGS = \
 	fire \
 	fogcoord \
 	fplight \
+	fslight \
 	gamma \
 	gearbox \
 	gears \
@@ -47,6 +48,7 @@ PROGS = \
 	renormal \
 	shadowtex \
 	singlebuffer \
+	streaming_rect \
 	spectex \
 	spriteblast \
 	stex3d \

dist/Mesa/progs/demos/cubemap.c

@@ -454,6 +454,7 @@ static void usage(void)
 
 int main( int argc, char *argv[] )
 {
+   glutInit(&argc, argv);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(600, 500);
    glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );

dist/Mesa/progs/demos/fslight.c

@@ -0,0 +1,334 @@
+/**
+ * Test OpenGL 2.0 vertex/fragment shaders.
+ * Brian Paul
+ * 1 November 2006
+ *
+ * Based on ARB version by:
+ * Michal Krol
+ * 20 February 2006
+ *
+ * Based on the original demo by:
+ * Brian Paul
+ * 17 April 2003
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/gl.h>
+#include <GL/glut.h>
+#include <GL/glext.h>
+
+static GLfloat diffuse[4] = { 0.5f, 0.5f, 1.0f, 1.0f };
+static GLfloat specular[4] = { 0.8f, 0.8f, 0.8f, 1.0f };
+static GLfloat lightPos[4] = { 0.0f, 10.0f, 20.0f, 1.0f };
+static GLfloat delta = 1.0f;
+
+static GLuint fragShader;
+static GLuint vertShader;
+static GLuint program;
+
+static GLint uLightPos;
+static GLint uDiffuse;
+static GLint uSpecular;
+
+static GLint win = 0;
+static GLboolean anim = GL_TRUE;
+static GLboolean wire = GL_FALSE;
+static GLboolean pixelLight = GL_TRUE;
+
+static GLint t0 = 0;
+static GLint frames = 0;
+
+static GLfloat xRot = 0.0f, yRot = 0.0f;
+
+static PFNGLCREATESHADERPROC glCreateShader_func = NULL;
+static PFNGLSHADERSOURCEPROC glShaderSource_func = NULL;
+static PFNGLGETSHADERSOURCEPROC glGetShaderSource_func = NULL;
+static PFNGLCOMPILESHADERPROC glCompileShader_func = NULL;
+static PFNGLCREATEPROGRAMPROC glCreateProgram_func = NULL;
+static PFNGLDELETEPROGRAMPROC glDeleteProgram_func = NULL;
+static PFNGLDELETESHADERPROC glDeleteShader_func = NULL;
+static PFNGLATTACHSHADERPROC glAttachShader_func = NULL;
+static PFNGLLINKPROGRAMPROC glLinkProgram_func = NULL;
+static PFNGLUSEPROGRAMPROC glUseProgram_func = NULL;
+static PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation_func = NULL;
+static PFNGLISPROGRAMPROC glIsProgram_func = NULL;
+static PFNGLISSHADERPROC glIsShader_func = NULL;
+static PFNGLUNIFORM3FVPROC glUniform3fv_func = NULL;
+static PFNGLUNIFORM3FVPROC glUniform4fv_func = NULL;
+
+
+
+static void
+normalize(GLfloat *dst, const GLfloat *src)
+{
+   GLfloat len = sqrtf(src[0] * src[0] + src[1] * src[1] + src[2] * src[2]);
+   dst[0] = src[0] / len;
+   dst[1] = src[1] / len;
+   dst[2] = src[2] / len;
+}
+
+
+static void
+Redisplay(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   
+   if (pixelLight) {
+      GLfloat vec[3];
+      glUseProgram_func(program);
+      normalize(vec, lightPos);
+      glUniform3fv_func(uLightPos, 1, vec);
+      glDisable(GL_LIGHTING);
+   }
+   else {
+      glUseProgram_func(0);
+      glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
+      glEnable(GL_LIGHTING);
+   }
+
+   glPushMatrix();
+   glRotatef(xRot, 1.0f, 0.0f, 0.0f);
+   glRotatef(yRot, 0.0f, 1.0f, 0.0f);
+   glutSolidSphere(2.0, 10, 5);
+   glPopMatrix();
+
+   glutSwapBuffers();
+   frames++;
+
+   if (anim) {
+      GLint t = glutGet(GLUT_ELAPSED_TIME);
+      if (t - t0 >= 5000) {
+         GLfloat seconds =(GLfloat)(t - t0) / 1000.0f;
+         GLfloat fps = frames / seconds;
+         printf("%d frames in %6.3f seconds = %6.3f FPS\n",
+                frames, seconds, fps);
+         t0 = t;
+         frames = 0;
+      }
+   }
+}
+
+
+static void
+Idle(void)
+{
+   lightPos[0] += delta;
+   if (lightPos[0] > 25.0f || lightPos[0] < -25.0f)
+      delta = -delta;
+   glutPostRedisplay();
+}
+
+
+static void
+Reshape(int width, int height)
+{
+   glViewport(0, 0, width, height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0f, 0.0f, -15.0f);
+}
+
+
+static void
+CleanUp(void)
+{
+   glDeleteShader_func(fragShader);
+   glDeleteShader_func(vertShader);
+   glDeleteProgram_func(program);
+   glutDestroyWindow(win);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+  (void) x;
+  (void) y;
+
+   switch(key) {
+   case ' ':
+   case 'a':
+      anim = !anim;
+      if (anim)
+         glutIdleFunc(Idle);
+      else
+         glutIdleFunc(NULL);
+      break;
+   case 'x':
+      lightPos[0] -= 1.0f;
+      break;
+   case 'X':
+      lightPos[0] += 1.0f;
+      break;
+   case 'w':
+      wire = !wire;
+      if (wire)
+         glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+      else
+         glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+      break;
+   case 'p':
+      pixelLight = !pixelLight;
+      if (pixelLight)
+         printf("Per-pixel lighting\n");
+      else
+         printf("Conventional lighting\n");
+      break;
+   case 27:
+      CleanUp();
+      exit(0);
+      break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+SpecialKey(int key, int x, int y)
+{
+   const GLfloat step = 3.0f;
+
+  (void) x;
+  (void) y;
+
+   switch(key) {
+   case GLUT_KEY_UP:
+      xRot -= step;
+      break;
+   case GLUT_KEY_DOWN:
+      xRot += step;
+      break;
+   case GLUT_KEY_LEFT:
+      yRot -= step;
+      break;
+   case GLUT_KEY_RIGHT:
+      yRot += step;
+      break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+Init(void)
+{
+   static const char *fragShaderText =
+      "uniform vec3 lightPos;\n"
+      "uniform vec4 diffuse;\n"
+      "uniform vec4 specular;\n"
+      "varying vec3 normal;\n"
+      "void main() {\n"
+      "   // Compute dot product of light direction and normal vector\n"
+      "   float dotProd = max(dot(lightPos, normalize(normal)), 0.0);\n"
+      "   // Compute diffuse and specular contributions\n"
+      "   gl_FragColor = diffuse * dotProd + specular * pow(dotProd, 20.0);\n"
+      "}\n";
+   static const char *vertShaderText =
+      "varying vec3 normal;\n"
+      "void main() {\n"
+      "   gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
+      "   normal = gl_NormalMatrix * gl_Normal;\n"
+      "}\n";
+
+
+   const char *version;
+
+   version = (const char *) glGetString(GL_VERSION);
+   if (version[0] != '2' || version[1] != '.') {
+      printf("Warning: this program expects OpenGL 2.0\n");
+      /*exit(1);*/
+   }
+
+
+   glCreateShader_func = (PFNGLCREATESHADERPROC) glutGetProcAddress("glCreateShader");
+   glDeleteShader_func = (PFNGLDELETESHADERPROC) glutGetProcAddress("glDeleteShader");
+   glDeleteProgram_func = (PFNGLDELETEPROGRAMPROC) glutGetProcAddress("glDeleteProgram");
+   glShaderSource_func = (PFNGLSHADERSOURCEPROC) glutGetProcAddress("glShaderSource");
+   glGetShaderSource_func = (PFNGLGETSHADERSOURCEPROC) glutGetProcAddress("glGetShaderSource");
+   glCompileShader_func = (PFNGLCOMPILESHADERPROC) glutGetProcAddress("glCompileShader");
+   glCreateProgram_func = (PFNGLCREATEPROGRAMPROC) glutGetProcAddress("glCreateProgram");
+   glAttachShader_func = (PFNGLATTACHSHADERPROC) glutGetProcAddress("glAttachShader");
+   glLinkProgram_func = (PFNGLLINKPROGRAMPROC) glutGetProcAddress("glLinkProgram");
+   glUseProgram_func = (PFNGLUSEPROGRAMPROC) glutGetProcAddress("glUseProgram");
+   glGetUniformLocation_func = (PFNGLGETUNIFORMLOCATIONPROC) glutGetProcAddress("glGetUniformLocation");
+   glIsProgram_func = (PFNGLISPROGRAMPROC) glutGetProcAddress("glIsProgram");
+   glIsShader_func = (PFNGLISSHADERPROC) glutGetProcAddress("glIsShader");
+   glUniform3fv_func = (PFNGLUNIFORM3FVPROC) glutGetProcAddress("glUniform3fv");
+   glUniform4fv_func = (PFNGLUNIFORM3FVPROC) glutGetProcAddress("glUniform4fv");
+
+   fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
+   glShaderSource_func(fragShader, 1, &fragShaderText, NULL);
+   glCompileShader_func(fragShader);
+
+   vertShader = glCreateShader_func(GL_VERTEX_SHADER);
+   glShaderSource_func(vertShader, 1, &vertShaderText, NULL);
+   glCompileShader_func(vertShader);
+
+   program = glCreateProgram_func();
+   glAttachShader_func(program, fragShader);
+   glAttachShader_func(program, vertShader);
+   glLinkProgram_func(program);
+   glUseProgram_func(program);
+
+   uLightPos = glGetUniformLocation_func(program, "lightPos");
+   uDiffuse = glGetUniformLocation_func(program, "diffuse");
+   uSpecular = glGetUniformLocation_func(program, "specular");
+
+   glUniform4fv_func(uDiffuse, 1, diffuse);
+   glUniform4fv_func(uSpecular, 1, specular);
+
+   glClearColor(0.3f, 0.3f, 0.3f, 0.0f);
+   glEnable(GL_DEPTH_TEST);
+   glEnable(GL_LIGHT0);
+   glEnable(GL_LIGHTING);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, diffuse);
+   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, specular);
+   glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 20.0f);
+
+   printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER));
+   printf("Press p to toggle between per-pixel and per-vertex lighting\n");
+
+   /* test glGetShaderSource() */
+   {
+      GLsizei len = strlen(fragShaderText) + 1;
+      GLsizei lenOut;
+      GLchar *src =(GLchar *) malloc(len * sizeof(GLchar));
+      glGetShaderSource_func(fragShader, 0, NULL, src);
+      glGetShaderSource_func(fragShader, len, &lenOut, src);
+      assert(len == lenOut + 1);
+      assert(strcmp(src, fragShaderText) == 0);
+      free(src);
+   }
+
+   assert(glIsProgram_func(program));
+   assert(glIsShader_func(fragShader));
+   assert(glIsShader_func(vertShader));
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   glutInit(&argc, argv);
+   glutInitWindowPosition( 0, 0);
+   glutInitWindowSize(200, 200);
+   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
+   win = glutCreateWindow(argv[0]);
+   glutReshapeFunc(Reshape);
+   glutKeyboardFunc(Key);
+   glutSpecialFunc(SpecialKey);
+   glutDisplayFunc(Redisplay);
+   if (anim)
+      glutIdleFunc(Idle);
+   Init();
+   glutMainLoop();
+   return 0;
+}
+

dist/Mesa/progs/demos/readpix.c

@@ -29,33 +29,32 @@ static GLboolean ScaleAndBias = GL_FALSE;
 static GLboolean Benchmark = GL_FALSE;
 static GLubyte *TempImage = NULL;
 
-#if 0
+#define COMBO 1
+#if COMBO == 0
 #define ReadFormat ImgFormat
 #define ReadType GL_UNSIGNED_BYTE
-#endif
+#elif COMBO == 1
-#if 1
 static GLenum ReadFormat = GL_RGBA;
 static GLenum ReadType = GL_UNSIGNED_BYTE;
-#endif
+#elif COMBO == 2
-#if 0
 static GLenum ReadFormat = GL_RGB;
 static GLenum ReadType = GL_UNSIGNED_BYTE;
-#endif
+#elif COMBO == 3
-#if 0
 static GLenum ReadFormat = GL_RGB;
 static GLenum ReadType = GL_UNSIGNED_SHORT_5_6_5;
-#endif
+#elif COMBO == 4
-#if 0
 static GLenum ReadFormat = GL_RGBA;
 static GLenum ReadType = GL_UNSIGNED_SHORT_1_5_5_5_REV;
-#endif
+#elif COMBO == 5
-#if 0
 static GLenum ReadFormat = GL_BGRA;
 static GLenum ReadType = GL_UNSIGNED_SHORT_5_5_5_1;
-#endif
+#elif COMBO == 6
-#if 0
 static GLenum ReadFormat = GL_BGRA;
 static GLenum ReadType = GL_UNSIGNED_SHORT_4_4_4_4_REV;
+#elif COMBO == 7
+static GLenum ReadFormat = GL_RGBA;
+static GLenum ReadType = GL_HALF_FLOAT_ARB;
+#undef GL_OES_read_format
 #endif
 
 
@@ -313,8 +312,10 @@ Init( GLboolean ciMode )
 
    Reset();
 
-   /* allocate an extra 1KB in case we're tinkering with pack alignment */
+   /* allocate large TempImage to store and image data type, plus an
-   TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 * sizeof(GLubyte)
+    * extra 1KB in case we're tinkering with pack alignment.
+    */
+   TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 * 4
                                   + 1000);
    assert(TempImage);
 }

dist/Mesa/progs/demos/streaming_rect.c

@@ -0,0 +1,322 @@
+
+/*
+ * GL_ARB_multitexture demo
+ *
+ * Command line options:
+ *    -info      print GL implementation information
+ *
+ *
+ * Brian Paul  November 1998  This program is in the public domain.
+ * Modified on 12 Feb 2002 for > 2 texture units.
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <GL/glut.h>
+
+#include "readtex.h"
+
+
+#define ANIMATE 10
+#define PBO 11
+#define QUIT 100
+
+static GLboolean Animate = GL_TRUE;
+static GLboolean use_pbo = 1;
+static GLboolean whole_rect = 1;
+
+static GLfloat Drift = 0.0;
+static GLfloat drift_increment = 1/255.0;
+static GLfloat Xrot = 20.0, Yrot = 30.0;
+
+static GLuint Width = 1024;
+static GLuint Height = 512;
+
+
+static void Idle( void )
+{
+   if (Animate) {
+
+      Drift += drift_increment;
+      if (Drift >= 1.0)
+         Drift = 0.0;
+
+      glutPostRedisplay();
+   }
+}
+
+static int max( int a, int b ) { return a > b ? a : b; }
+static int min( int a, int b ) { return a < b ? a : b; }
+
+static void DrawObject()
+{
+   GLint size = Width * Height * 4;
+   
+   if (use_pbo) {
+      /* XXX: This is extremely important - semantically makes the buffer
+       * contents undefined, but in practice means that the driver can
+       * release the old copy of the texture and allocate a new one
+       * without waiting for outstanding rendering to complete.
+       */
+      glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_EXT, size, NULL, GL_STREAM_DRAW_ARB);
+
+      {
+	 char *image = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, GL_WRITE_ONLY_ARB);
+      
+	 printf("char %d\n", (unsigned char)(Drift * 255));
+
+	 memset(image, size, (unsigned char)(Drift * 255));
+      
+	 glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT);
+      }
+   
+
+      /* BGRA is required for most hardware paths:
+       */
+      glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, Width, Height, 0,
+		   GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+   }
+   else {
+      static char *image = NULL;
+
+      if (image == NULL) 
+	 image = malloc(size);
+
+      memset(image, size, (unsigned char)(Drift * 255));
+
+      /* BGRA should be the fast path for regular uploads as well.
+       */
+      glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, Width, Height, 0,
+		   GL_BGRA, GL_UNSIGNED_BYTE, image);
+   }
+
+   {
+      int x,y,w,h;
+
+      if (whole_rect) {
+	 x = y = 0;
+	 w = Width;
+	 h = Height;
+      }
+      else {
+	 x = y = 0;
+	 w = min(10, Width);
+	 h = min(10, Height);
+      }
+
+      glBegin(GL_QUADS);
+
+      glTexCoord2f( x, y);
+      glVertex2f( x, y );
+
+      glTexCoord2f( x, y + h);
+      glVertex2f( x, y + h);
+
+      glTexCoord2f( x + w + .5, y + h);
+      glVertex2f( x + w, y + h );
+
+      glTexCoord2f( x + w, y + .5);
+      glVertex2f( x + w, y );
+
+      glEnd();
+   }
+}
+
+
+
+static void Display( void )
+{
+   static GLint T0 = 0;
+   static GLint Frames = 0;
+   GLint t;
+
+   glClear( GL_COLOR_BUFFER_BIT );
+
+   glPushMatrix();
+      DrawObject();
+   glPopMatrix();
+
+   glutSwapBuffers();
+
+   Frames++;
+
+   t = glutGet(GLUT_ELAPSED_TIME);
+   if (t - T0 >= 1000) {
+      GLfloat seconds = (t - T0) / 1000.0;
+
+      GLfloat fps = Frames / seconds;
+      printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
+
+      drift_increment = 2.2 * seconds / Frames;
+      T0 = t;
+      Frames = 0;
+   }
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+/*    glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 ); */
+   gluOrtho2D( 0, width, height, 0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+   glTranslatef(0.375, 0.375, 0);
+}
+
+
+static void ModeMenu(int entry)
+{
+   if (entry==ANIMATE) {
+      Animate = !Animate;
+   }
+   else if (entry==PBO) {
+      use_pbo = !use_pbo;
+   }
+   else if (entry==QUIT) {
+      exit(0);
+   }
+
+   glutPostRedisplay();
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case 27:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void SpecialKey( int key, int x, int y )
+{
+   float step = 3.0;
+   (void) x;
+   (void) y;
+
+   switch (key) {
+      case GLUT_KEY_UP:
+         Xrot += step;
+         break;
+      case GLUT_KEY_DOWN:
+         Xrot -= step;
+         break;
+      case GLUT_KEY_LEFT:
+         Yrot += step;
+         break;
+      case GLUT_KEY_RIGHT:
+         Yrot -= step;
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void Init( int argc, char *argv[] )
+{
+   const char *exten = (const char *) glGetString(GL_EXTENSIONS);
+   GLuint texObj, DrawPBO;
+   GLint size;
+
+
+   if (!strstr(exten, "GL_ARB_multitexture")) {
+      printf("Sorry, GL_ARB_multitexture not supported by this renderer.\n");
+      exit(1);
+   }
+
+   glGetIntegerv(GL_MAX_TEXTURE_SIZE, &size);
+   printf("%d x %d max texture size\n", size, size);
+
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+   /* allocate two texture objects */
+   glGenTextures(1, &texObj);
+
+   /* setup the texture objects */
+   glActiveTextureARB(GL_TEXTURE0_ARB);
+   glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texObj);
+
+   glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+   glGenBuffersARB(1, &DrawPBO);
+
+   glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_EXT, DrawPBO);
+   glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_EXT,
+		   Width * Height * 4, NULL, GL_STREAM_DRAW);
+
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   glEnable(GL_TEXTURE_RECTANGLE_ARB);
+
+   glShadeModel(GL_SMOOTH);
+   glClearColor(0.3, 0.3, 0.4, 1.0);
+
+   if (argc > 1 && strcmp(argv[1], "-info")==0) {
+      printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+      printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+      printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+      printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
+   }
+}
+
+
+int main( int argc, char *argv[] )
+{
+   GLint i;
+
+   glutInit( &argc, argv );
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-w") == 0) {
+         Width = atoi(argv[i+1]);
+         if (Width <= 0) {
+            printf("Error, bad width\n");
+            exit(1);
+         }
+         i++;
+      }
+      else if (strcmp(argv[i], "-h") == 0) {
+         Height = atoi(argv[i+1]);
+         if (Height <= 0) {
+            printf("Error, bad height\n");
+            exit(1);
+         }
+         i++;
+      }
+   }
+
+   glutInitWindowSize( Width, Height );
+   glutInitWindowPosition( 0, 0 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+   glutCreateWindow(argv[0] );
+
+   Init( argc, argv );
+
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutSpecialFunc( SpecialKey );
+   glutDisplayFunc( Display );
+   glutIdleFunc( Idle );
+
+   glutCreateMenu(ModeMenu);
+   glutAddMenuEntry("Toggle Animation", ANIMATE);
+   glutAddMenuEntry("Toggle PBO", PBO);
+   glutAddMenuEntry("Quit", QUIT);
+   glutAttachMenu(GLUT_RIGHT_BUTTON);
+
+   glutMainLoop();
+   return 0;
+}

dist/Mesa/progs/demos/texdown.c

@@ -38,8 +38,8 @@
 #include <GL/glut.h>
 
 
-static GLsizei MaxSize = 1024;
+static GLsizei MaxSize = 2048;
-static GLsizei TexWidth = 256, TexHeight = 256, TexBorder = 0;
+static GLsizei TexWidth = 1024, TexHeight = 1024, TexBorder = 0;
 static GLboolean ScaleAndBias = GL_FALSE;
 static GLboolean SubImage = GL_FALSE;
 static GLdouble DownloadRate = 0.0;  /* texels/sec */
@@ -47,6 +47,32 @@ static GLdouble DownloadRate = 0.0;  /* texels/sec */
 static GLuint Mode = 0;
 
 
+/* Try and avoid L2 cache effects by cycling through a small number of
+ * textures.
+ * 
+ * At the initial size of 1024x1024x4 == 4mbyte, say 8 textures will
+ * keep us out of most caches at 32mb total.
+ *
+ * This turns into a fairly interesting question of what exactly you
+ * expect to be in cache in normal usage, and what you think should be
+ * outside.  There's no rules for this, no reason to favour one usage
+ * over another except what the application you care about happens to
+ * resemble most closely.
+ *
+ * - Should the client texture image be in L2 cache?  Has it just been
+ *   generated or read from disk?
+ * - Does the application really use >1 texture, or is it constantly 
+ *   updating one image in-place?
+ *
+ * Different answers will favour different texture upload mechanisms.
+ * To upload an image that is purely outside of cache, a DMA-based
+ * upload will probably win, whereas for small, in-cache textures,
+ * copying looks good.
+ */
+#define NR_TEXOBJ 4
+static GLuint TexObj[NR_TEXOBJ];
+
+
 struct FormatRec {
    GLenum Format;
    GLenum Type;
@@ -116,25 +142,57 @@ TypeStr(GLenum type)
    }
 }
 
+/* On x86, there is a performance cliff for memcpy to texture memory
+ * for sources below 64 byte alignment.  We do our best with this in
+ * the driver, but it is better if the images are correctly aligned to
+ * start with:
+ */
+#define ALIGN (1<<12)
+
+static unsigned align(unsigned value, unsigned a)
+{
+   return (value + a - 1) & ~(a-1);
+}
+
+static int MIN2(int a, int b)
+{
+   return a < b ? a : b;
+}
 
 static void
 MeasureDownloadRate(void)
 {
    const int w = TexWidth + 2 * TexBorder;
    const int h = TexHeight + 2 * TexBorder;
-   const int bytes = w * h * BytesPerTexel(Format);
+   const int image_bytes = align(w * h * BytesPerTexel(Format), ALIGN);
+   const int bytes = image_bytes * NR_TEXOBJ;
+   GLubyte *orig_texImage, *orig_getImage;
    GLubyte *texImage, *getImage;
    GLdouble t0, t1, time;
    int count;
    int i;
+   int offset = 0;
+   GLdouble total = 0;		/* ints will tend to overflow */
 
-   texImage = (GLubyte *) malloc(bytes);
+   printf("allocating %d bytes for %d %dx%d images\n",
-   getImage = (GLubyte *) malloc(bytes);
+	  bytes, NR_TEXOBJ, w, h);
-   if (!texImage || !getImage) {
+
+   orig_texImage = (GLubyte *) malloc(bytes + ALIGN);
+   orig_getImage = (GLubyte *) malloc(image_bytes + ALIGN);
+   if (!orig_texImage || !orig_getImage) {
       DownloadRate = 0.0;
       return;
    }
 
+   printf("alloc %p %p\n", orig_texImage, orig_getImage);
+
+   texImage = (GLubyte *)align((unsigned)orig_texImage, ALIGN);
+   getImage = (GLubyte *)align((unsigned)orig_getImage, ALIGN);   
+
+   for (i = 1; !(((unsigned)texImage) & i); i<<=1)
+      ;
+   printf("texture image alignment: %d bytes (%p)\n", i, texImage);
+      
    for (i = 0; i < bytes; i++) {
       texImage[i] = i & 0xff;
    }
@@ -166,16 +224,50 @@ MeasureDownloadRate(void)
    count = 0;
    t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
    do {
+      int img = count%NR_TEXOBJ;
+      GLubyte *img_ptr = texImage + img * image_bytes;
+
+      glBindTexture(GL_TEXTURE_2D, TexObj[img]);
+
       if (SubImage && count > 0) {
-         glTexSubImage2D(GL_TEXTURE_2D, 0, -TexBorder, -TexBorder, w, h,
+	 /* Only update a portion of the image each iteration.  This
+	  * is presumably why you'd want to use texsubimage, otherwise
+	  * you may as well just call teximage again.
+	  *
+	  * A bigger question is whether to use a pointer that moves
+	  * with each call, ie does the incoming data come from L2
+	  * cache under normal circumstances, or is it pulled from
+	  * uncached memory?  
+	  * 
+	  * There's a good argument to say L2 cache, ie you'd expect
+	  * the data to have been recently generated.  It's possible
+	  * that it could have come from a file read, which may or may
+	  * not have gone through the cpu.
+	  */
+         glTexSubImage2D(GL_TEXTURE_2D, 0, 
+			 -TexBorder, 
+			 -TexBorder + offset * h/8, 
+			 w, 
+			 h/8,
                          FormatTable[Format].Format,
-                         FormatTable[Format].Type, texImage);
+                         FormatTable[Format].Type, 
+#if 1
+			 texImage /* likely in L2$ */
+#else
+			 img_ptr + offset * bytes/8 /* unlikely in L2$ */
+#endif
+	    );
+	 offset += 1;
+	 offset %= 8;
+	 total += w * h / 8;
       }
       else {
          glTexImage2D(GL_TEXTURE_2D, 0,
                       FormatTable[Format].IntFormat, w, h, TexBorder,
                       FormatTable[Format].Format,
-                      FormatTable[Format].Type, texImage);
+                      FormatTable[Format].Type, 
+		      img_ptr);
+	 total += w*h;
       }
 
       /* draw a tiny polygon to force texture into texram */
@@ -192,25 +284,12 @@ MeasureDownloadRate(void)
 
    glDisable(GL_TEXTURE_2D);
 
-   printf("w*h=%d  count=%d  time=%f\n", w*h, count, time);
+   printf("total texels=%f  time=%f\n", total, time);
-   DownloadRate = w * h * count / time;
+   DownloadRate = total / time;
 
-#if 0
-   if (!ScaleAndBias) {
-      /* verify texture readback */
-      glGetTexImage(GL_TEXTURE_2D, 0,
-                    FormatTable[Format].Format,
-                    FormatTable[Format].Type, getImage);
-      for (i = 0; i < w * h; i++) {
-         if (texImage[i] != getImage[i]) {
-            printf("[%d] %d != %d\n", i, texImage[i], getImage[i]);
-         }
-      }
-   }
-#endif
 
-   free(texImage);
+   free(orig_texImage); 
-   free(getImage);
+   free(orig_getImage); 
 
    {
       GLint err = glGetError();

dist/Mesa/progs/osdemos/osdemo.c

@@ -4,7 +4,7 @@
  * See Mesa/include/GL/osmesa.h for documentation of the OSMesa functions.
  *
  * If you want to render BIG images you'll probably have to increase
- * MAX_WIDTH and MAX_HEIGHT in src/config.h.
+ * MAX_WIDTH and MAX_Height in src/config.h.
  *
  * This program is in the public domain.
  *
@@ -27,8 +27,8 @@
 
 #define SAVE_TARGA
 
-#define WIDTH 400
+static int Width = 400;
-#define HEIGHT 400
+static int Height = 400;
 
 
 static void
@@ -175,10 +175,10 @@ write_targa(const char *filename, const GLubyte *buffer, int width, int height)
       fputc (0x00, f);
       fputc (0x00, f);	/* Y-origin of Image	*/
       fputc (0x00, f);
-      fputc (WIDTH & 0xff, f);      /* Image Width	*/
+      fputc (Width & 0xff, f);      /* Image Width	*/
-      fputc ((WIDTH>>8) & 0xff, f);
+      fputc ((Width>>8) & 0xff, f);
-      fputc (HEIGHT & 0xff, f);     /* Image Height	*/
+      fputc (Height & 0xff, f);     /* Image Height	*/
-      fputc ((HEIGHT>>8) & 0xff, f);
+      fputc ((Height>>8) & 0xff, f);
       fputc (0x18, f);		/* Pixel Depth, 0x18 => 24 Bits	*/
       fputc (0x20, f);		/* Image Descriptor	*/
       fclose(f);
@@ -248,36 +248,43 @@ write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
 int
 main(int argc, char *argv[])
 {
+   OSMesaContext ctx;
    void *buffer;
-   int i;
    char *filename = NULL;
 
+   if (argc < 2) {
+      fprintf(stderr, "Usage:\n");
+      fprintf(stderr, "  osdemo filename [width height]\n");
+      return 0;
+   }
+
+   filename = argv[1];
+   if (argc == 4) {
+      Width = atoi(argv[2]);
+      Height = atoi(argv[3]);
+   }
+
    /* Create an RGBA-mode context */
 #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
    /* specify Z, stencil, accum sizes */
-   OSMesaContext ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
+   ctx = OSMesaCreateContextExt( OSMESA_RGBA, 16, 0, 0, NULL );
 #else
-   OSMesaContext ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
+   ctx = OSMesaCreateContext( OSMESA_RGBA, NULL );
 #endif
    if (!ctx) {
       printf("OSMesaCreateContext failed!\n");
       return 0;
    }
 
-   for (i = 1; i < argc; i++) {
-      if (argv[i][0] != '-')
-         filename = argv[i];
-   }
-
    /* Allocate the image buffer */
-   buffer = malloc( WIDTH * HEIGHT * 4 * sizeof(GLubyte) );
+   buffer = malloc( Width * Height * 4 * sizeof(GLubyte) );
    if (!buffer) {
       printf("Alloc image buffer failed!\n");
       return 0;
    }
 
    /* Bind the buffer to the context and make it current */
-   if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, WIDTH, HEIGHT )) {
+   if (!OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, Width, Height )) {
       printf("OSMesaMakeCurrent failed!\n");
       return 0;
    }
@@ -295,9 +302,9 @@ main(int argc, char *argv[])
 
    if (filename != NULL) {
 #ifdef SAVE_TARGA
-      write_targa(filename, buffer, WIDTH, HEIGHT);
+      write_targa(filename, buffer, Width, Height);
 #else
-      write_ppm(filename, buffer, WIDTH, HEIGHT);
+      write_ppm(filename, buffer, Width, Height);
 #endif
    }
    else {

dist/Mesa/progs/xdemos/wincopy.c

@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.1
+ * Version:  6.5.2
  * 
- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2006  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"),
@@ -32,6 +32,7 @@
  */
 
 
+#define GL_GLEXT_PROTOTYPES
 #define GLX_GLXEXT_PROTOTYPES
 #include <GL/gl.h>
 #include <GL/glx.h>
@@ -50,7 +51,7 @@ static int ScrNum;
 static GLXContext Context;
 static Window Win[2];  /* Win[0] = source,  Win[1] = dest */
 static GLint Width[2], Height[2];
-
+static GLboolean TestClipping = GL_FALSE;
 static GLfloat Angle = 0.0;
 
 static GLboolean DrawFront = GL_FALSE;
@@ -123,7 +124,7 @@ Redraw(void)
    glMatrixMode(GL_MODELVIEW);
 
    glShadeModel(GL_FLAT);
-   glClearColor(0.5, 0.5, 0.5, 1.0);
+   glClearColor(0.5, 0.5, 0.5, 0.0);
    glClear(GL_COLOR_BUFFER_BIT);
 
    /* draw blue quad */
@@ -150,22 +151,18 @@ Redraw(void)
       return;
    }
 
-   /* raster pos setup */
-   glViewport(0, 0, Width[1], Height[1]);
-   glPushMatrix();
-   glLoadIdentity();
-   glMatrixMode(GL_PROJECTION);
-   glPushMatrix();
-   glLoadIdentity();
-   glOrtho(-1, 1, -1, 1, -1, 1);
-   glRasterPos2f(-1, -1);
-
    /* copy the image between windows */
-   glCopyPixels(0, 0, Width[0], Height[0], GL_COLOR);
+   glClearColor(0.0, 0.0, 0.0, 0.0);
+   glClear(GL_COLOR_BUFFER_BIT);
 
-   glPopMatrix();
+   if (TestClipping) {
-   glMatrixMode(GL_MODELVIEW);
+      glWindowPos2iARB(-2, -2);
-   glPopMatrix();
+      glCopyPixels(-2, -2, Width[0] + 4, Height[0] + 4, GL_COLOR);
+   }
+   else {
+      glWindowPos2iARB(0, 0);
+      glCopyPixels(0, 0, Width[0], Height[0], GL_COLOR);
+   }
 
    if (DrawFront)
       glFinish();
@@ -309,6 +306,8 @@ Init(void)
 int
 main(int argc, char *argv[])
 {
+   if (argc > 1 && strcmp(argv[1], "-clip") == 0)
+      TestClipping = GL_TRUE;
    Init();
    EventLoop();
    return 0;