Merge branch 'master' of git+ssh://joukj@git.freedesktop.org/git/mesa/mesa

13 files changed, 633 insertions, 62 deletions

diff --git a/progs/demos/geartrain.c b/progs/demos/geartrain.c
index 3feb2a0524..8363f2abc6 100644
--- a/progs/demos/geartrain.c
+++ b/progs/demos/geartrain.c
@@ -1053,6 +1053,7 @@ main (int argc, char *argv[])
     else
        file = argv[1];
 
+    glutInit(&argc, argv); 
     glutInitWindowPosition (0, 0);
     glutInitWindowSize(640,480);
     glutInitDisplayMode (GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
diff --git a/progs/demos/gltestperf.c b/progs/demos/gltestperf.c
index be95390101..2188b02419 100644
--- a/progs/demos/gltestperf.c
+++ b/progs/demos/gltestperf.c
@@ -569,6 +569,7 @@ main(int ac, char **av)
    if (ac == 2)
       frontbuffer = 0;
 
+   glutInit(&ac, av);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(640, 480);
diff --git a/progs/demos/isosurf.c b/progs/demos/isosurf.c
index 0710bc6047..10f94b6ace 100644
--- a/progs/demos/isosurf.c
+++ b/progs/demos/isosurf.c
@@ -1042,6 +1042,7 @@ int main(int argc, char **argv)
 
    read_surface( "isosurf.dat" );
 
+   glutInit( &argc, argv);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(400, 400);
 
diff --git a/progs/demos/morph3d.c b/progs/demos/morph3d.c
index 162a6ff847..6aca8270ff 100644
--- a/progs/demos/morph3d.c
+++ b/progs/demos/morph3d.c
@@ -826,7 +826,7 @@ static void pinit(void)
 
 }
 
-static void INIT(void)
+int main(int argc, char **argv)
 {
   printf("Morph 3D - Shows morphing platonic polyhedra\n");
   printf("Author: Marcelo Fernandes Vianna (vianna@cat.cbpf.br)\n\n");
@@ -841,6 +841,7 @@ static void INIT(void)
 
   object=1;
 
+  glutInit(&argc, argv);
   glutInitWindowPosition(0,0);
   glutInitWindowSize(640,480);
 
@@ -888,9 +889,3 @@ static void INIT(void)
   glutMainLoop();
   
 }
-
-int main(int argc, char **argv)
-{
-  INIT();
-  return(0);
-}
diff --git a/progs/demos/spriteblast.c b/progs/demos/spriteblast.c
index f0d3d0dfd4..5ad8e4d9a9 100644
--- a/progs/demos/spriteblast.c
+++ b/progs/demos/spriteblast.c
@@ -333,13 +333,13 @@ menu(int option)
     smooth = 0;
     break;
   case 10:
-    glPointSize(4.0);
+    glPointSize(16.0);
     break;
   case 11:
-    glPointSize(8.0);
+    glPointSize(32.0);
     break;
   case 12:
-    glPointSize(16.0);
+    glPointSize(64.0);
     break;
   case 13:
     spin = 1 - spin;
@@ -411,19 +411,19 @@ key(unsigned char c, int x, int y)
     glutPostRedisplay();
     break;
   case '1':
-    glPointSize(2.0);
+    glPointSize(16.0);
     glutPostRedisplay();
     break;
   case '2':
-    glPointSize(4.0);
+    glPointSize(32.0);
     glutPostRedisplay();
     break;
   case '3':
-    glPointSize(8.0);
+    glPointSize(64.0);
     glutPostRedisplay();
     break;
   case '4':
-    glPointSize(16.0);
+    glPointSize(128.0);
     glutPostRedisplay();
     break;
   case 27:
@@ -526,9 +526,9 @@ main(int argc, char **argv)
   glutAddMenuEntry("Threshold 10", 7);
   glutAddMenuEntry("Point smooth on", 8);
   glutAddMenuEntry("Point smooth off", 9);
-  glutAddMenuEntry("Point size 4", 10);
-  glutAddMenuEntry("Point size 8", 11);
-  glutAddMenuEntry("Point size 16", 12);
+  glutAddMenuEntry("Point size 16", 10);
+  glutAddMenuEntry("Point size 32", 11);
+  glutAddMenuEntry("Point size 64", 12);
   glutAddMenuEntry("Toggle spin", 13);
   glutAddMenuEntry("200 points ", 14);
   glutAddMenuEntry("500 points ", 15);
@@ -544,7 +544,7 @@ main(int argc, char **argv)
   glEnable(GL_DEPTH_TEST);
   glEnable(GL_POINT_SMOOTH);
   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-  glPointSize(16.0);
+  glPointSize(32.0);
 #ifdef GL_ARB_point_parameters
   glPointParameterfvARB(GL_POINT_DISTANCE_ATTENUATION_ARB, theQuad);
 #endif
diff --git a/progs/demos/winpos.c b/progs/demos/winpos.c
index 3a1a19ecdb..b58e330864 100644
--- a/progs/demos/winpos.c
+++ b/progs/demos/winpos.c
@@ -100,6 +100,7 @@ static void init( void )
 
 int main( int argc, char *argv[] )
 {
+   glutInit(&argc, argv);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(500, 500);
    glutInitDisplayMode( GLUT_RGB );
diff --git a/progs/fbdev/glfbdevtest.c b/progs/fbdev/glfbdevtest.c
index a461c55e2f..6d9f807030 100644
--- a/progs/fbdev/glfbdevtest.c
+++ b/progs/fbdev/glfbdevtest.c
@@ -23,11 +23,21 @@
 #include <GL/glfbdev.h>
 #include <math.h>
 
-#define DEFAULT_DEPTH 8
+
+/**
+ * Choose one of these modes
+ */
+/*static const int XRes = 1280, YRes = 1024, Hz = 75;*/
+/*static const int XRes = 1280, YRes = 1024, Hz = 70;*/
+/*static const int XRes = 1280, YRes = 1024, Hz = 60;*/
+static const int XRes = 1024, YRes = 768, Hz = 70;
+
+static int DesiredDepth = 32;
+
+static int NumFrames = 100;
 
 static struct fb_fix_screeninfo FixedInfo;
 static struct fb_var_screeninfo VarInfo, OrigVarInfo;
-static int DesiredDepth = 0;
 static int OriginalVT = -1;
 static int ConsoleFD = -1;
 static int FrameBufferFD = -1;
@@ -227,7 +237,6 @@ initialize_fbdev( void )
    VarInfo = OrigVarInfo;
 
    /* set the depth, resolution, etc */
-   DesiredDepth = 32;
    if (DesiredDepth)
       VarInfo.bits_per_pixel = DesiredDepth;
 
@@ -251,16 +260,60 @@ initialize_fbdev( void )
       VarInfo.blue.length = 8;
       VarInfo.transp.length = 8;
    }
-   /* timing values taken from /etc/fb.modes (1280x1024 @ 75Hz) */
-   VarInfo.xres_virtual = VarInfo.xres = 1280;
-   VarInfo.yres_virtual = VarInfo.yres = 1024;
-   VarInfo.pixclock = 7408;
-   VarInfo.left_margin = 248;
-   VarInfo.right_margin = 16;
-   VarInfo.upper_margin = 38;
-   VarInfo.lower_margin = 1;
-   VarInfo.hsync_len = 144;
-   VarInfo.vsync_len = 3;
+
+   /* timing values taken from /etc/fb.modes */
+   if (XRes == 1280 && YRes == 1024) {
+      VarInfo.xres_virtual = VarInfo.xres = XRes;
+      VarInfo.yres_virtual = VarInfo.yres = YRes;
+      if (Hz == 75) {
+         VarInfo.pixclock = 7408;
+         VarInfo.left_margin = 248;
+         VarInfo.right_margin = 16;
+         VarInfo.upper_margin = 38;
+         VarInfo.lower_margin = 1;
+         VarInfo.hsync_len = 144;
+         VarInfo.vsync_len = 3;
+      }
+      else if (Hz == 70) {
+         VarInfo.pixclock = 7937;
+         VarInfo.left_margin = 216;
+         VarInfo.right_margin = 80;
+         VarInfo.upper_margin = 36;
+         VarInfo.lower_margin = 1;
+         VarInfo.hsync_len = 112;
+         VarInfo.vsync_len = 5;
+      }
+      else if (Hz == 60) {
+         VarInfo.pixclock = 9260;
+         VarInfo.left_margin = 248;
+         VarInfo.right_margin = 48;
+         VarInfo.upper_margin = 38;
+         VarInfo.lower_margin = 1;
+         VarInfo.hsync_len = 112;
+         VarInfo.vsync_len = 3;
+      }
+      else {
+         fprintf(stderr, "invalid rate for 1280x1024\n");
+         exit(1);
+      }
+   }
+   else if (XRes == 1024 && YRes == 768 && Hz == 70) {
+      VarInfo.xres_virtual = VarInfo.xres = XRes;
+      VarInfo.yres_virtual = VarInfo.yres = YRes;
+      if (Hz == 70) {
+         VarInfo.pixclock = 13334;
+         VarInfo.left_margin = 144;
+         VarInfo.right_margin = 24;
+         VarInfo.upper_margin = 29;
+         VarInfo.lower_margin = 3;
+         VarInfo.hsync_len = 136;
+         VarInfo.vsync_len = 6;
+      }
+      else {
+         fprintf(stderr, "invalid rate for 1024x768\n");
+         exit(1);
+      }
+   }
 
    VarInfo.xoffset = 0;
    VarInfo.yoffset = 0;
@@ -338,7 +391,7 @@ initialize_fbdev( void )
    printf("MMIOAddress = %p\n", MMIOAddress);
 
    /* try out some simple MMIO register reads */
-   if (1)
+   if (0)
    {
       typedef unsigned int CARD32;
       typedef unsigned char CARD8;
@@ -452,6 +505,7 @@ gltest( void )
    GLFBDevVisualPtr vis;
    int bytes, r, g, b, a;
    float ang;
+   int i;
 
    printf("GLFBDEV_VENDOR = %s\n", glFBDevGetString(GLFBDEV_VENDOR));
    printf("GLFBDEV_VERSION = %s\n", glFBDevGetString(GLFBDEV_VERSION));
@@ -491,13 +545,17 @@ gltest( void )
    glEnable(GL_LIGHT0);
    glEnable(GL_DEPTH_TEST);
 
-   for (ang = 0; ang <= 180; ang += 15) {
+   printf("Drawing %d frames...\n", NumFrames);
+
+   ang = 0.0;
+   for (i = 0; i < NumFrames; i++) {
       glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
       glPushMatrix();
       glRotatef(ang, 1, 0, 0);
       doughnut(1, 3, 40, 20);
       glPopMatrix();
       glFBDevSwapBuffers(buf);
+      ang += 15.0;
    }
 
    /* clean up */
@@ -510,12 +568,29 @@ gltest( void )
 }
 
 
+static void
+parse_args(int argc, char *argv[])
+{
+   int i;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-f") == 0) {
+         NumFrames = atoi(argv[i+1]);
+         i++;
+      }
+   }
+}
+
+
 int
 main( int argc, char *argv[] )
 {
    signal(SIGUSR1, signal_handler);  /* exit if someone tries a vt switch */
    signal(SIGSEGV, signal_handler);  /* catch segfaults */
 
+   parse_args(argc, argv);
+
+   printf("Setting mode to %d x %d @ %d Hz, %d bpp\n", XRes, YRes, Hz, DesiredDepth);
    initialize_fbdev();
    gltest();
    shutdown_fbdev();
diff --git a/progs/samples/Makefile.mgw b/progs/samples/Makefile.mgw
index 1193540578..3b2fd785de 100644
--- a/progs/samples/Makefile.mgw
+++ b/progs/samples/Makefile.mgw
@@ -26,6 +26,15 @@
 #  Email : dborca@users.sourceforge.net
 #  Web   : http://www.geocities.com/dborca
 
+# MinGW samples makefile updated for Mesa 7.0
+#
+#  Updated : by Heromyth, on 2007-7-21
+#  Email   : zxpmyth@yahoo.com.cn
+#  Bugs    : 1) All the default settings work fine. But the setting X86=1 can't work. 
+#            The others havn't been tested yet.
+#            2) The generated DLLs are *not* compatible with the ones built
+#            with the other compilers like VC8, especially for GLUT. 
+#            3) Although more tests are needed, it can be used individually!
 
 #
 #  Available options:
@@ -44,15 +53,31 @@
 
 TOP = ../..
 
+include $(TOP)/configs/config.mgw
+ALL_USING_STDCALL ?= 1
+GL_USING_STDCALL ?= 1
+GLUT_USING_STDCALL ?= 1
+
 CC = mingw32-gcc
-CFLAGS = -Wall -W -pedantic
+CFLAGS = -Wall -pedantic
 CFLAGS += -O2 -ffast-math
 CFLAGS += -I$(TOP)/include -I../util
 ifeq ($(FX),1)
-CFLAGS += -DFX
+  CFLAGS += -DFX
+endif
+
+CFLAGS += -DGLUT_DISABLE_ATEXIT_HACK
+
+ifeq ($(GL_USING_STDCALL),0)
+  CFLAGS += -DGL_NO_STDCALL
+endif
+
+ifeq ($(GLUT_USING_STDCALL),1)
+  CFLAGS += -D_STDCALL_SUPPORTED
+else
+  CFLAGS += -DGLUT_NO_STDCALL
 endif
-CFLAGS += -DGLUT_DISABLE_ATEXIT_HACK -D_STDCALL_SUPPORTED
-CFLAGS += -D_WINDEF_ -D_WINGDI_
+
 
 LD = mingw32-g++
 LDFLAGS = -s -L$(TOP)/lib
diff --git a/progs/tests/Makefile b/progs/tests/Makefile
index b506db3e7b..9016efe9e7 100644
--- a/progs/tests/Makefile
+++ b/progs/tests/Makefile
@@ -55,6 +55,7 @@ SOURCES = \
 	pbo.c \
 	prog_parameter.c \
 	projtex.c \
+	random.c \
 	readrate.c \
 	seccolor.c \
 	sharedtex.c \
diff --git a/progs/tests/drawbuffers.c b/progs/tests/drawbuffers.c
index 8583bac0dd..5e89569380 100644
--- a/progs/tests/drawbuffers.c
+++ b/progs/tests/drawbuffers.c
@@ -19,6 +19,7 @@ static int Win;
 static int Width = 400, Height = 400;
 static GLuint FBobject, RBobjects[3];
 static GLfloat Xrot = 0.0, Yrot = 0.0;
+static GLuint Program;
 
 
 static void
@@ -40,6 +41,8 @@ Display(void)
       GL_COLOR_ATTACHMENT1_EXT
    };
 
+   glUseProgram_func(Program);
+
    /* draw to user framebuffer */
    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FBobject);
 
@@ -71,10 +74,12 @@ Display(void)
                 buffer);
    /* top half = colorbuffer 1 */
    glReadBuffer(GL_COLOR_ATTACHMENT1_EXT);
-   glReadPixels(0, Height/2, Width, Height / 2, GL_RGBA, GL_UNSIGNED_BYTE,
-                buffer + Width * Height / 2 * 4);
+   glReadPixels(0, Height/2, Width, Height - Height / 2,
+                GL_RGBA, GL_UNSIGNED_BYTE,
+                buffer + Width * (Height / 2) * 4);
 
    /* draw to window */
+   glUseProgram_func(0);
    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
    glWindowPos2iARB(0, 0);
    glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
@@ -243,15 +248,15 @@ SetupShaders(void)
       "   gl_FragData[1] = vec4(1.0) - gl_Color; \n"
       "}\n";
 
-   GLuint fragShader, program;
+   GLuint fragShader;
 
    fragShader = LoadAndCompileShader(GL_FRAGMENT_SHADER, fragShaderText);
-   program = glCreateProgram_func();
+   Program = glCreateProgram_func();
 
-   glAttachShader_func(program, fragShader);
-   glLinkProgram_func(program);
-   CheckLink(program);
-   glUseProgram_func(program);
+   glAttachShader_func(Program, fragShader);
+   glLinkProgram_func(Program);
+   CheckLink(Program);
+   glUseProgram_func(Program);
 }
 
 
diff --git a/progs/tests/random.c b/progs/tests/random.c
new file mode 100644
index 0000000000..d52c338e0e
--- /dev/null
+++ b/progs/tests/random.c
@@ -0,0 +1,457 @@
+/**
+ * Random rendering, to check for crashes, hangs, etc.
+ *
+ * Brian Paul
+ * 21 June 2007
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <GL/glut.h>
+
+static int Win;
+static GLboolean Anim = GL_TRUE;
+static int Width = 200, Height = 200;
+static int DB = 0;
+static int MinVertexCount = 0, MaxVertexCount = 1000;
+static int Count = 0;
+
+struct vertex
+{
+   int type;
+   float v[4];
+};
+
+static int BufferSize = 10000;
+static struct vertex *Vbuffer = NULL;
+static int Vcount, Vprim;
+
+enum {
+   BEGIN,
+   END,
+   VERTEX2,
+   VERTEX3,
+   VERTEX4,
+   COLOR3,
+   COLOR4,
+   TEX2,
+   TEX3,
+   TEX4,
+   SECCOLOR3,
+   NORMAL3
+};
+
+
+
+/**
+ * This can be called from within gdb after a crash:
+ * (gdb) call ReportState()
+ */
+static void
+ReportState(void)
+{
+   static const struct {
+      GLenum token;
+      char *str;
+      GLenum type;
+   } state [] = {
+      { GL_ALPHA_TEST, "GL_ALPHA_TEST", GL_INT },
+      { GL_BLEND, "GL_BLEND", GL_INT },
+      { GL_CLIP_PLANE0, "GL_CLIP_PLANE0", GL_INT },
+      { GL_DEPTH_TEST, "GL_DEPTH_TEST", GL_INT },
+      { GL_LIGHTING, "GL_LIGHTING", GL_INT },
+      { GL_LINE_WIDTH, "GL_LINE_WIDTH", GL_FLOAT },
+      { GL_POINT_SIZE, "GL_POINT_SIZE", GL_FLOAT },
+      { GL_SHADE_MODEL, "GL_SHADE_MODEL", GL_INT },
+      { GL_SCISSOR_TEST, "GL_SCISSOR_TEST", GL_INT },
+      { 0, NULL, 0 }
+   };
+
+   GLint i;
+
+   for (i = 0; state[i].token; i++) {
+      if (state[i].type == GL_INT) {
+         GLint v;
+         glGetIntegerv(state[i].token, &v);
+         printf("%s = %d\n", state[i].str, v);
+      }
+      else {
+         GLfloat v;
+         glGetFloatv(state[i].token, &v);
+         printf("%s = %f\n", state[i].str, v);
+      }
+   }
+}
+
+static void
+PrintVertex(const char *f, const struct vertex *v, int sz)
+{
+   int i;
+   printf("%s(", f);
+   for (i = 0; i < sz; i++) {
+      printf("%g%s", v->v[i], (i == sz-1) ? "" : ", ");
+   }
+   printf(");\n");
+}
+
+/**
+ * This can be called from within gdb after a crash:
+ * (gdb) call ReportState()
+ */
+static void
+LastPrim(void)
+{
+   int i;
+   for (i = 0; i < Vcount; i++) {
+      switch (Vbuffer[i].type) {
+      case BEGIN:
+         printf("glBegin(%d);\n", (int) Vbuffer[i].v[0]);
+         break;
+      case END:
+         printf("glEnd();\n");
+         break;
+      case VERTEX2:
+         PrintVertex("glVertex2f", Vbuffer + i, 2);
+         break;
+      case VERTEX3:
+         PrintVertex("glVertex3f", Vbuffer + i, 3);
+         break;
+      case VERTEX4:
+         PrintVertex("glVertex4f", Vbuffer + i, 4);
+         break;
+      case COLOR3:
+         PrintVertex("glColor3f", Vbuffer + i, 3);
+         break;
+      case COLOR4:
+         PrintVertex("glColor4f", Vbuffer + i, 4);
+         break;
+      case TEX2:
+         PrintVertex("glTexCoord2f", Vbuffer + i, 2);
+         break;
+      case TEX3:
+         PrintVertex("glTexCoord3f", Vbuffer + i, 3);
+         break;
+      case TEX4:
+         PrintVertex("glTexCoord4f", Vbuffer + i, 4);
+         break;
+      case SECCOLOR3:
+         PrintVertex("glSecondaryColor3f", Vbuffer + i, 3);
+         break;
+      case NORMAL3:
+         PrintVertex("glNormal3f", Vbuffer + i, 3);
+         break;
+      default:
+         abort();
+      }
+   }
+}
+
+
+static int
+RandomInt(int max)
+{
+   if (max == 0)
+      return 0;
+   return rand() % max;
+}
+
+static float
+RandomFloat(float min, float max)
+{
+   int k = rand() % 10000;
+   float x = min + (max - min) * k / 10000.0;
+   return x;
+}
+
+/*
+ * Return true if random number in [0,1] is <= percentile.
+ */
+static GLboolean
+RandomChoice(float percentile)
+{
+   return RandomFloat(0.0, 1.0) <= percentile;
+}
+
+static void
+RandomStateChange(void)
+{
+   int k = RandomInt(19);
+   switch (k) {
+   case 0:
+      glEnable(GL_BLEND);
+      break;
+   case 1:
+      glDisable(GL_BLEND);
+      break;
+   case 2:
+      glEnable(GL_ALPHA_TEST);
+      break;
+   case 3:
+      glEnable(GL_ALPHA_TEST);
+      break;
+   case 4:
+      glEnable(GL_DEPTH_TEST);
+      break;
+   case 5:
+      glEnable(GL_DEPTH_TEST);
+      break;
+   case 6:
+      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+      break;
+   case 7:
+      glPointSize(10.0);
+      break;
+   case 8:
+      glPointSize(1.0);
+      break;
+   case 9:
+      glLineWidth(10.0);
+      break;
+   case 10:
+      glLineWidth(1.0);
+      break;
+   case 11:
+      glEnable(GL_LIGHTING);
+      break;
+   case 12:
+      glDisable(GL_LIGHTING);
+      break;
+   case 13:
+      glEnable(GL_SCISSOR_TEST);
+      break;
+   case 14:
+      glDisable(GL_SCISSOR_TEST);
+      break;
+   case 15:
+      glEnable(GL_CLIP_PLANE0);
+      break;
+   case 16:
+      glDisable(GL_CLIP_PLANE0);
+      break;
+   case 17:
+      glShadeModel(GL_FLAT);
+      break;
+   case 18:
+      glShadeModel(GL_SMOOTH);
+      break;
+   }
+}
+
+
+static void
+RandomPrimitive(void)
+{
+   int i;
+   int len = MinVertexCount + RandomInt(MaxVertexCount - MinVertexCount);
+
+   Vprim = RandomInt(10);
+
+   glBegin(Vprim);
+   Vbuffer[Vcount].type = BEGIN;
+   Vbuffer[Vcount].v[0] = Vprim;
+   Vcount++;
+
+   for (i = 0; i < len; i++) {
+      Vbuffer[Vcount].v[0] = RandomFloat(-3, 3);
+      Vbuffer[Vcount].v[1] = RandomFloat(-3, 3);
+      Vbuffer[Vcount].v[2] = RandomFloat(-3, 3);
+      Vbuffer[Vcount].v[3] = RandomFloat(-3, 3);
+      int k = RandomInt(9);
+      switch (k) {
+      case 0:
+         glVertex2fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = VERTEX2;
+         break;
+      case 1:
+         glVertex3fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = VERTEX3;
+         break;
+      case 2:
+         glVertex4fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = VERTEX4;
+         break;
+      case 3:
+         glColor3fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = COLOR3;
+         break;
+      case 4:
+         glColor4fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = COLOR4;
+         break;
+      case 5:
+         glTexCoord2fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = TEX2;
+         break;
+      case 6:
+         glTexCoord3fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = TEX3;
+         break;
+      case 7:
+         glTexCoord4fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = TEX4;
+         break;
+      case 8:
+         glSecondaryColor3fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = SECCOLOR3;
+         break;
+      case 9:
+         glNormal3fv(Vbuffer[Vcount].v);
+         Vbuffer[Vcount].type = NORMAL3;
+         break;
+      default:
+         abort();
+      }
+      Vcount++;
+
+      if (Vcount >= BufferSize - 2) {
+         /* reset */
+         Vcount = 0;
+      }
+   }
+
+   Vbuffer[Vcount++].type = END;
+
+   glEnd();
+}
+
+
+static void
+RandomDraw(void)
+{
+   int i;
+   GLboolean dlist = RandomChoice(0.1);
+   if (dlist)
+      glNewList(1, GL_COMPILE);
+   for (i = 0; i < 3; i++) {
+      RandomStateChange();
+   }
+   RandomPrimitive();
+
+   if (dlist) {
+      glEndList();
+      glCallList(1);
+   }
+}
+
+
+static void
+Idle(void)
+{
+   glutPostRedisplay();
+}
+
+
+static void
+Draw(void)
+{
+#if 1
+   RandomDraw();
+   Count++;
+#else
+   /* cut & paste temp code here */
+#endif
+
+   assert(glGetError() == 0);
+
+   if (DB)
+      glutSwapBuffers();
+   else
+      glFinish();
+}
+
+
+static void
+Reshape(int width, int height)
+{
+   Width = width;
+   Height = height;
+   glViewport(0, 0, width, height);
+   glScissor(20, 20, Width-40, Height-40);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+   (void) x;
+   (void) y;
+   switch (key) {
+      case 27:
+         glutDestroyWindow(Win);
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+Init(void)
+{
+   static const GLdouble plane[4] = {1, 1, 0, 0};
+   glDrawBuffer(GL_FRONT);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   glEnable(GL_LIGHT0);
+   glClipPlane(GL_CLIP_PLANE0, plane);
+
+   Vbuffer = (struct vertex *)
+      malloc(BufferSize * sizeof(struct vertex));
+
+   /* silence warnings */
+   (void) ReportState;
+   (void) LastPrim;
+}
+
+
+static void
+ParseArgs(int argc, char *argv[])
+{
+   int i;
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-s") == 0) {
+         int j = atoi(argv[i + 1]);
+         printf("Random seed value: %d\n", j);
+         srand(j);
+         i++;
+      }
+      else if (strcmp(argv[i], "-a") == 0) {
+         i++;
+         MinVertexCount = atoi(argv[i]);
+      }
+      else if (strcmp(argv[i], "-b") == 0) {
+         i++;
+         MaxVertexCount = atoi(argv[i]);
+      }
+   }
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   glutInit(&argc, argv);
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize(Width, Height);
+   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
+   Win = glutCreateWindow(argv[0]);
+   ParseArgs(argc, argv);
+   glutReshapeFunc(Reshape);
+   glutKeyboardFunc(Key);
+   glutDisplayFunc(Draw);
+   if (Anim)
+      glutIdleFunc(Idle);
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/xdemos/offset.c b/progs/xdemos/offset.c
index 3e92e68daa..0ad9147aea 100644
--- a/progs/xdemos/offset.c
+++ b/progs/xdemos/offset.c
@@ -71,12 +71,12 @@ typedef Vertex Quad[4];
 
 /* data to define the six faces of a unit cube */
 Quad quads[MAXQUAD] = {
-   { {0,0,0}, {1,0,0}, {1,1,0}, {0,1,0} },
-   { {0,0,1}, {1,0,1}, {1,1,1}, {0,1,1} },
-   { {0,0,0}, {1,0,0}, {1,0,1}, {0,0,1} },
-   { {0,1,0}, {1,1,0}, {1,1,1}, {0,1,1} },
-   { {0,0,0}, {0,0,1}, {0,1,1}, {0,1,0} },
-   { {1,0,0}, {1,0,1}, {1,1,1}, {1,1,0} }
+   { {0,0,0}, {0,0,1}, {0,1,1}, {0,1,0} }, /* x = 0 */
+   { {0,0,0}, {1,0,0}, {1,0,1}, {0,0,1} }, /* y = 0 */
+   { {0,0,0}, {1,0,0}, {1,1,0}, {0,1,0} }, /* z = 0 */
+   { {1,0,0}, {1,0,1}, {1,1,1}, {1,1,0} }, /* x = 1 */
+   { {0,1,0}, {1,1,0}, {1,1,1}, {0,1,1} }, /* y = 1 */
+   { {0,0,1}, {1,0,1}, {1,1,1}, {0,1,1} }  /* z = 1 */
 };
 
 #define WIREFRAME	0
@@ -86,7 +86,7 @@ static void error(const char* prog, const char* msg);
 static void cubes(int mx, int my, int mode);
 static void fill(Quad quad);
 static void outline(Quad quad);
-static void draw_hidden(Quad quad, int mode);
+static void draw_hidden(Quad quad, int mode, int face);
 static void process_input(Display *dpy, Window win);
 static int query_extension(char* extName);
 
@@ -101,6 +101,7 @@ int main(int argc, char** argv) {
     XSetWindowAttributes swa;
     Window win;
     GLXContext cx;
+    GLint z;
 
     dpy = XOpenDisplay(0);
     if (!dpy) error(argv[0], "can't open display");
@@ -134,13 +135,16 @@ int main(int argc, char** argv) {
 
     /* set up viewing parameters */
     glMatrixMode(GL_PROJECTION);
-    gluPerspective(20, 1, 0.1, 20);
+    gluPerspective(20, 1, 10, 20);
     glMatrixMode(GL_MODELVIEW);
     glTranslatef(0, 0, -15);
 
     /* set other relevant state information */
     glEnable(GL_DEPTH_TEST);
 
+    glGetIntegerv(GL_DEPTH_BITS, &z);
+    printf("GL_DEPTH_BITS = %d\n", z);
+
 #ifdef GL_EXT_polygon_offset
     printf("using 1.0 offset extension\n");
     glPolygonOffsetEXT( 1.0, 0.00001 );
@@ -160,6 +164,7 @@ int main(int argc, char** argv) {
 
 static void
 draw_scene(int mx, int my) {
+   glClearColor(0.25, 0.25, 0.25, 0);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     glPushMatrix();
@@ -206,7 +211,7 @@ cubes(int mx, int my, int mode) {
 		glTranslatef(x, y, z);
 		glScalef(0.8, 0.8, 0.8);
 		for (i = 0; i < MAXQUAD; i++)
-		    draw_hidden(quads[i], mode);
+                    draw_hidden(quads[i], mode, i);
 		glPopMatrix();
 	    }
 	}
@@ -236,13 +241,18 @@ outline(Quad quad) {
 }
 
 static void
-draw_hidden(Quad quad, int mode) {
+draw_hidden(Quad quad, int mode, int face) {
+    static const GLfloat colors[3][3] = {
+        {0.5, 0.5, 0.0},
+        {0.8, 0.5, 0.0},
+        {0.0, 0.5, 0.8}
+    };
     if (mode == HIDDEN_LINE) {
-	glColor3f(0, 0, 0);
+        glColor3fv(colors[face % 3]);
 	fill(quad);
     }
 
-    /* draw the outline using white, optionally fill the interior with black */
+    /* draw the outline using white */
     glColor3f(1, 1, 1);
     outline(quad);
 }
diff --git a/progs/xdemos/pbdemo.c b/progs/xdemos/pbdemo.c
index efdfdfa452..7db0017b33 100644
--- a/progs/xdemos/pbdemo.c
+++ b/progs/xdemos/pbdemo.c
@@ -93,7 +93,7 @@ MakePbuffer( Display *dpy, int screen, int width, int height )
          None
       },
       {
-         /* Single bufferd, without depth buffer */
+         /* Single buffered, without depth buffer */
          GLX_RENDER_TYPE, GLX_RGBA_BIT,
          GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
          GLX_RED_SIZE, 1,
@@ -105,7 +105,7 @@ MakePbuffer( Display *dpy, int screen, int width, int height )
          None
       },
       {
-         /* Double bufferd, without depth buffer */
+         /* Double buffered, without depth buffer */
          GLX_RENDER_TYPE, GLX_RGBA_BIT,
          GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
          GLX_RED_SIZE, 1,
@@ -130,9 +130,8 @@ MakePbuffer( Display *dpy, int screen, int width, int height )
       /* Get list of possible frame buffer configurations */
       fbConfigs = ChooseFBConfig(dpy, screen, fbAttribs[attempt], &nConfigs);
       if (nConfigs==0 || !fbConfigs) {
-         printf("Error: glXChooseFBConfig failed\n");
-         XCloseDisplay(dpy);
-         return 0;
+         printf("Note: glXChooseFBConfig(%s) failed\n", fbString[attempt]);
+         continue;
       }
 
 #if 0 /*DEBUG*/