Merge branch 'upstream-experimental' into debian-experimental

Conflicts:

	doxygen/Makefile
	doxygen/common.doxy
	doxygen/doxy.bat
	doxygen/glapi.doxy
	doxygen/header.html
	doxygen/main.doxy
	doxygen/math.doxy
	doxygen/shader.doxy
	doxygen/swrast.doxy
	doxygen/swrast_setup.doxy
	doxygen/tnl.doxy
	doxygen/tnl_dd.doxy
	progs/tests/Makefile
	progs/tests/fbotest1.c
	progs/tests/fbotest2.c
	progs/tests/fbotexture.c
	progs/tests/mipmap_limits.c
	progs/tests/sharedtex.c
	progs/tools/trace/gltrace_support.cc
	progs/trivial/Makefile
	src/egl/docs/EGL_MESA_screen_surface
	src/egl/main/egllog.c
	src/glx/mini/Makefile
	src/glx/mini/driver.h
	src/mesa/drivers/allegro/amesa.c
	src/mesa/drivers/windows/gldirect/dx7/gld_driver_dx7.c
	src/mesa/drivers/windows/gldirect/dx7/gld_ext_dx7.c
	src/mesa/drivers/windows/gldirect/dx7/gld_primitive_dx7.c
	src/mesa/drivers/windows/gldirect/dx8/gld_driver_dx8.c
	src/mesa/drivers/windows/gldirect/dx8/gld_ext_dx8.c
	src/mesa/drivers/windows/gldirect/dx8/gld_primitive_dx8.c
	src/mesa/drivers/windows/gldirect/dx9/gld_driver_dx9.c
	src/mesa/drivers/windows/gldirect/dx9/gld_ext_dx9.c
	src/mesa/drivers/windows/gldirect/dx9/gld_primitive_dx9.c
	src/mesa/drivers/windows/gldirect/mesasw/gld_wgl_mesasw.c

6 files changed, 547 insertions, 240 deletions

diff --git a/progs/demos/.cvsignore b/progs/demos/.gitignore
index f764b3d117e..f764b3d117e 100644
--- a/progs/demos/.cvsignore
+++ b/progs/demos/.gitignore
diff --git a/progs/demos/Makefile b/progs/demos/Makefile
index 4623d6c8d91..cf96828ed7f 100644
--- a/progs/demos/Makefile
+++ b/progs/demos/Makefile
@@ -113,34 +113,46 @@ trackball.o: trackball.c trackball.h
 	$(CC) -c -I$(INCDIR) $(CFLAGS) trackball.c
 
 
+extfuncs.h:  $(TOP)/progs/util/extfuncs.h
+	cp $< .
+
+
 reflect: reflect.o showbuffer.o readtex.o
-	$(CC) -I$(INCDIR) $(CFLAGS) reflect.o showbuffer.o readtex.o $(APP_LIB_DEPS) -o $@
+	$(CC) reflect.o showbuffer.o readtex.o $(APP_LIB_DEPS) -o $@
 
 reflect.o: reflect.c showbuffer.h
 	$(CC) -c -I$(INCDIR) $(CFLAGS) reflect.c
 
 
 shadowtex: shadowtex.o showbuffer.o
-	$(CC) -I$(INCDIR) $(CFLAGS) shadowtex.o showbuffer.o $(APP_LIB_DEPS) -o $@
+	$(CC) shadowtex.o showbuffer.o $(APP_LIB_DEPS) -o $@
 
 shadowtex.o: shadowtex.c showbuffer.h
 	$(CC) -c -I$(INCDIR) $(CFLAGS) shadowtex.c
 
 
 gloss: gloss.o trackball.o readtex.o
-	$(CC) -I$(INCDIR) $(CFLAGS) gloss.o trackball.o readtex.o $(APP_LIB_DEPS) -o $@
+	$(CC) gloss.o trackball.o readtex.o $(APP_LIB_DEPS) -o $@
 
 gloss.o: gloss.c trackball.h
 	$(CC) -c -I$(INCDIR) $(CFLAGS) gloss.c
 
 
 engine: engine.o trackball.o readtex.o
-	$(CC) -I$(INCDIR) $(CFLAGS) engine.o trackball.o readtex.o $(APP_LIB_DEPS) -o $@
+	$(CC) engine.o trackball.o readtex.o $(APP_LIB_DEPS) -o $@
 
 engine.o: engine.c trackball.h
 	$(CC) -c -I$(INCDIR) $(CFLAGS) engine.c
 
 
+fslight: fslight.o
+	$(CC) fslight.o $(APP_LIB_DEPS) -o $@
+
+fslight.o: fslight.c extfuncs.h
+	$(CC) -c -I$(INCDIR) $(CFLAGS) fslight.c
+
+
+
 clean:
 	-rm -f $(PROGS)
 	-rm -f *.o *~
diff --git a/progs/demos/fogcoord.c b/progs/demos/fogcoord.c
index 19a15f05b87..00c73c6f048 100644
--- a/progs/demos/fogcoord.c
+++ b/progs/demos/fogcoord.c
@@ -7,151 +7,136 @@
  * Daniel Borca
  */
 
-
+#define GL_GLEXT_PROTOTYPES
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
 #include <GL/glut.h>
 
-#include "readtex.h"
-
-#define TEXTURE_FILE "../images/bw.rgb"
-
-#define ARRAYS 0     /* use glDrawElements   */
-
-#define VERBOSE 1    /* tell me what happens */
+#define DEPTH 5.0f
 
-#define DEPTH 15.0f
+static PFNGLFOGCOORDFEXTPROC glFogCoordf_ext;
+static PFNGLFOGCOORDPOINTEREXTPROC glFogCoordPointer_ext;
 
-#if !defined(GLAPIENTRYP)
-#    define GLAPIENTRYP *
-#endif
-
-typedef void (GLAPIENTRYP GLFOGCOORDFEXTPROC) (GLfloat f);
-typedef void (GLAPIENTRYP GLFOGCOORDPOINTEREXTPROC) (GLenum, GLsizei, const GLvoid *);
-
-static GLFOGCOORDFEXTPROC glFogCoordf_ext;
-#if ARRAYS
-static GLFOGCOORDPOINTEREXTPROC glFogCoordPointer_ext;
-#endif
 static GLboolean have_fog_coord;
 
 static GLfloat camz;
-static GLuint texture[1];
 
 static GLint fogMode;
 static GLboolean fogCoord;
 static GLfloat fogDensity = 0.75;
-static GLfloat fogStart = 1.0, fogEnd = 40.0;
+static GLfloat fogStart = 1.0, fogEnd = DEPTH;
 static GLfloat fogColor[4] = {0.6f, 0.3f, 0.0f, 1.0f};
+static const char *ModeStr = NULL;
+static GLboolean Arrays = GL_FALSE;
+static GLboolean Texture = GL_TRUE;
 
 
-static void APIENTRY glFogCoordf_nop (GLfloat f)
+static void
+Reset(void)
 {
-   (void)f;
+   fogMode = 1;
+   fogCoord = 1;
+   fogDensity = 0.75;
+   fogStart = 1.0;
+   fogEnd = DEPTH;
+   Arrays = GL_FALSE;
+   Texture = GL_TRUE;
 }
 
 
-static int BuildTexture (const char *filename, GLuint texid[])
+static void APIENTRY
+glFogCoordf_nop (GLfloat f)
 {
-   GLubyte *tex_data;
-   GLenum tex_format;
-   GLint tex_width, tex_height;
+   (void)f;
+}
 
-   tex_data = LoadRGBImage(filename, &tex_width, &tex_height, &tex_format);
-   if (tex_data == NULL) {
-      return -1;
-   }
 
-   {
-      GLint tex_max;
-      glGetIntegerv(GL_MAX_TEXTURE_SIZE, &tex_max);
-      if ((tex_width > tex_max) || (tex_height > tex_max)) {
-         return -1;
-      }
+static void
+PrintString(const char *s)
+{
+   while (*s) {
+      glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
+      s++;
    }
+}
 
-   glGenTextures(1, texid);
-   
-   glBindTexture(GL_TEXTURE_2D, texid[0]);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-   glTexImage2D(GL_TEXTURE_2D, 0, tex_format, tex_width, tex_height, 0,
-                tex_format, GL_UNSIGNED_BYTE, tex_data);
 
-   return 0;
+static void
+PrintInfo(void)
+{
+   char s[100];
+
+   glDisable(GL_FOG);
+   glColor3f(0, 1, 1);
+
+   sprintf(s, "Mode(m): %s  Start(s/S): %g  End(e/E): %g  Density(d/D): %g",
+           ModeStr, fogStart, fogEnd, fogDensity);
+   glWindowPos2iARB(5, 20);
+   PrintString(s);
+
+   sprintf(s, "Arrays(a): %s  glFogCoord(c): %s  EyeZ(z/z): %g",
+           (Arrays ? "Yes" : "No"),
+           (fogCoord ? "Yes" : "No"),
+           camz);
+   glWindowPos2iARB(5, 5);
+   PrintString(s);
 }
 
 
-static int SetFogMode (GLint fogMode)
+static int
+SetFogMode(GLint fogMode)
 {
    fogMode &= 3;
    switch (fogMode) {
    case 0:
+      ModeStr = "Off";
       glDisable(GL_FOG);
-#if VERBOSE
-      printf("fog(disable)\n");
-#endif
       break;
    case 1:
+      ModeStr = "GL_LINEAR";
       glEnable(GL_FOG);
       glFogi(GL_FOG_MODE, GL_LINEAR);
       glFogf(GL_FOG_START, fogStart);
       glFogf(GL_FOG_END, fogEnd);
-#if VERBOSE
-      printf("fog(GL_LINEAR, %.2f, %.2f)\n", fogStart, fogEnd);
-#endif
       break;
    case 2:
+      ModeStr = "GL_EXP";
       glEnable(GL_FOG);
       glFogi(GL_FOG_MODE, GL_EXP);
       glFogf(GL_FOG_DENSITY, fogDensity);
-#if VERBOSE
-      printf("fog(GL_EXP, %.2f)\n", fogDensity);
-#endif
       break;
    case 3:
+      ModeStr = "GL_EXP2";
       glEnable(GL_FOG);
       glFogi(GL_FOG_MODE, GL_EXP2);
       glFogf(GL_FOG_DENSITY, fogDensity);
-#if VERBOSE
-      printf("fog(GL_EXP2, %.2f)\n", fogDensity);
-#endif
       break;
    }
    return fogMode;
 }
 
 
-static GLboolean SetFogCoord (GLboolean fogCoord)
+static GLboolean
+SetFogCoord(GLboolean fogCoord)
 {
    glFogCoordf_ext = glFogCoordf_nop;
 
    if (!have_fog_coord) {
-#if VERBOSE
-      printf("fog(GL_FRAGMENT_DEPTH_EXT)%s\n", fogCoord ? " EXT_fog_coord not available!" : "");
-#endif
       return GL_FALSE;
    }
 
    if (fogCoord) {
-      glFogCoordf_ext = (GLFOGCOORDFEXTPROC)glutGetProcAddress("glFogCoordfEXT");
+      glFogCoordf_ext = (PFNGLFOGCOORDFEXTPROC)glutGetProcAddress("glFogCoordfEXT");
       glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
-#if VERBOSE
-      printf("fog(GL_FOG_COORDINATE_EXT)\n");
-#endif
-   } else {
+   }
+   else {
       glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT);
-#if VERBOSE
-      printf("fog(GL_FRAGMENT_DEPTH_EXT)\n");
-#endif
    }
    return fogCoord;
 }
 
 
-#if ARRAYS
 /* could reuse vertices */
 static GLuint vertex_index[] = {
    /* Back */
@@ -172,19 +157,19 @@ static GLuint vertex_index[] = {
 
 static GLfloat vertex_pointer[][3] = {
    /* Back */
-   {-2.5f,-2.5f,-DEPTH}, { 2.5f,-2.5f,-DEPTH}, { 2.5f, 2.5f,-DEPTH}, {-2.5f, 2.5f,-DEPTH},
+   {-1.0f,-1.0f,-DEPTH}, { 1.0f,-1.0f,-DEPTH}, { 1.0f, 1.0f,-DEPTH}, {-1.0f, 1.0f,-DEPTH},
 
    /* Floor */
-   {-2.5f,-2.5f,-DEPTH}, { 2.5f,-2.5f,-DEPTH}, { 2.5f,-2.5f, DEPTH}, {-2.5f,-2.5f, DEPTH},
+   {-1.0f,-1.0f,-DEPTH}, { 1.0f,-1.0f,-DEPTH}, { 1.0f,-1.0f, 0.0}, {-1.0f,-1.0f, 0.0},
 
    /* Roof */
-   {-2.5f, 2.5f,-DEPTH}, { 2.5f, 2.5f,-DEPTH}, { 2.5f, 2.5f, DEPTH}, {-2.5f, 2.5f, DEPTH},
+   {-1.0f, 1.0f,-DEPTH}, { 1.0f, 1.0f,-DEPTH}, { 1.0f, 1.0f, 0.0}, {-1.0f, 1.0f, 0.0},
 
    /* Right */
-   { 2.5f,-2.5f, DEPTH}, { 2.5f, 2.5f, DEPTH}, { 2.5f, 2.5f,-DEPTH}, { 2.5f,-2.5f,-DEPTH},
+   { 1.0f,-1.0f, 0.0}, { 1.0f, 1.0f, 0.0}, { 1.0f, 1.0f,-DEPTH}, { 1.0f,-1.0f,-DEPTH},
 
    /* Left */
-   {-2.5f,-2.5f, DEPTH}, {-2.5f, 2.5f, DEPTH}, {-2.5f, 2.5f,-DEPTH}, {-2.5f,-2.5f,-DEPTH}
+   {-1.0f,-1.0f, 0.0}, {-1.0f, 1.0f, 0.0}, {-1.0f, 1.0f,-DEPTH}, {-1.0f,-1.0f,-DEPTH}
 };
 
 static GLfloat texcoord_pointer[][2] = {
@@ -192,118 +177,139 @@ static GLfloat texcoord_pointer[][2] = {
    {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f},
 
    /* Floor */
-   {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f},
+   {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, DEPTH}, {0.0f, DEPTH},
 
    /* Roof */
-   {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f},
+   {1.0f, 0.0f}, {0.0f, 0.0f}, {0.0f, DEPTH}, {1.0f, DEPTH},
 
    /* Right */
-   {0.0f, 0.0f}, {0.0f, 1.0f}, {1.0f, 1.0f}, {1.0f, 0.0f},
+   {0.0f, 1.0f}, {0.0f, 0.0f}, {DEPTH, 0.0f}, {DEPTH, 1.0f},
 
    /* Left */
-   {0.0f, 0.0f}, {0.0f, 1.0f}, {1.0f, 1.0f}, {1.0f, 0.0f}
+   {0.0f, 0.0f}, {0.0f, 1.0f}, {DEPTH, 1.0f}, {DEPTH, 0.0f}
 };
 
-static GLfloat fogcoord_pointer[][1] = {
+static GLfloat fogcoord_pointer[] = {
    /* Back */
-   {1.0f}, {1.0f}, {1.0f}, {1.0f},
+   DEPTH, DEPTH, DEPTH, DEPTH,
 
    /* Floor */
-   {1.0f}, {1.0f}, {0.0f}, {0.0f},
+   DEPTH, DEPTH, 0.0, 0.0,
 
    /* Roof */
-   {1.0f}, {1.0f}, {0.0f}, {0.0f},
+   DEPTH, DEPTH, 0.0, 0.0,
 
    /* Right */
-   {0.0f}, {0.0f}, {1.0f}, {1.0f},
+   0.0, 0.0, DEPTH, DEPTH,
 
    /* Left */
-   {0.0f}, {0.0f}, {1.0f}, {1.0f}
+   0.0, 0.0, DEPTH, DEPTH
 };
-#endif
 
 
-static void Display( void )
+static void
+Display( void )
 {
    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glLoadIdentity ();
    
-   glTranslatef(0.0f, 0.0f, camz);
+   glTranslatef(0.0f, 0.0f, -camz);
 
-#if ARRAYS
-   glDrawElements(GL_QUADS, sizeof(vertex_index) / sizeof(vertex_index[0]), GL_UNSIGNED_INT, vertex_index);
-#else
-   /* Back */
-   glBegin(GL_QUADS);
-   glFogCoordf_ext(1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-2.5f,-2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 2.5f,-2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 2.5f, 2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-2.5f, 2.5f,-DEPTH);
-   glEnd();
+   SetFogMode(fogMode);
 
-   /* Floor */
-   glBegin(GL_QUADS);
-   glFogCoordf_ext(1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-2.5f,-2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 2.5f,-2.5f,-DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 2.5f,-2.5f, DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-2.5f,-2.5f, DEPTH);
-   glEnd();
+   glColor3f(1, 1, 1);
 
-   /* Roof */
-   glBegin(GL_QUADS);
-   glFogCoordf_ext(1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-2.5f, 2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 2.5f, 2.5f,-DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 2.5f, 2.5f, DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-2.5f, 2.5f, DEPTH);
-   glEnd();
+   if (Texture)
+      glEnable(GL_TEXTURE_2D);
 
-   /* Right */
-   glBegin(GL_QUADS);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 2.5f,-2.5f, DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 2.5f, 2.5f, DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 2.5f, 2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 2.5f,-2.5f,-DEPTH);
-   glEnd();
+   if (Arrays) {
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+      glDrawElements(GL_QUADS, sizeof(vertex_index) / sizeof(vertex_index[0]),
+                     GL_UNSIGNED_INT, vertex_index);
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+   }
+   else {
+      /* Back */
+      glBegin(GL_QUADS);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f,-1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f,-1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f,-DEPTH);
+      glEnd();
+
+      /* Floor */
+      glBegin(GL_QUADS);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f,-1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f,-1.0f,-DEPTH);
+      glFogCoordf_ext(0.0f); glTexCoord2f(1.0f,  DEPTH); glVertex3f( 1.0f,-1.0f,0.0);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f,  DEPTH); glVertex3f(-1.0f,-1.0f,0.0);
+      glEnd();
+
+      /* Roof */
+      glBegin(GL_QUADS);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, 1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, 1.0f,-DEPTH);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, DEPTH); glVertex3f( 1.0f, 1.0f,0.0);
+      glFogCoordf_ext(0.0f); glTexCoord2f(1.0f, DEPTH); glVertex3f(-1.0f, 1.0f,0.0);
+      glEnd();
+
+      /* Right */
+      glBegin(GL_QUADS);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,-1.0f,0.0);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, 1.0f,0.0);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(DEPTH, 0.0f); glVertex3f( 1.0f, 1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(DEPTH, 1.0f); glVertex3f( 1.0f,-1.0f,-DEPTH);
+      glEnd();
+
+      /* Left */
+      glBegin(GL_QUADS);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f,-1.0f,0.0);
+      glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f,0.0);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(DEPTH, 1.0f); glVertex3f(-1.0f, 1.0f,-DEPTH);
+      glFogCoordf_ext(DEPTH); glTexCoord2f(DEPTH, 0.0f); glVertex3f(-1.0f,-1.0f,-DEPTH);
+      glEnd();
+   }
 
-   /* Left */
-   glBegin(GL_QUADS);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-2.5f,-2.5f, DEPTH);
-   glFogCoordf_ext(0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-2.5f, 2.5f, DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-2.5f, 2.5f,-DEPTH);
-   glFogCoordf_ext(1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-2.5f,-2.5f,-DEPTH);
-   glEnd();
-#endif
+   glDisable(GL_TEXTURE_2D);
+
+   PrintInfo();
 
    glutSwapBuffers();
 }
 
 
-static void Reshape( int width, int height )
+static void
+Reshape( int width, int height )
 {
    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
-   gluPerspective(45.0f, (GLfloat)(width)/(GLfloat)(height), 0.1f, 100.0f);
+   glFrustum(-1, 1, -1, 1, 1.0, 100);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
 }
 
 
-static void Key( unsigned char key, int x, int y )
+static void
+Key( unsigned char key, int x, int y )
 {
    (void) x;
    (void) y;
    switch (key) {
+      case 'a':
+         Arrays = !Arrays;
+         break;
       case 'f':
+      case 'm':
          fogMode = SetFogMode(fogMode + 1);
          break;
-      case '+':
-         if (fogDensity < 1.0) {
-            fogDensity += 0.05;
-         }
+      case 'D':
+         fogDensity += 0.05;
          SetFogMode(fogMode);
          break;
-      case '-':
+      case 'd':
          if (fogDensity > 0.0) {
             fogDensity -= 0.05;
          }
@@ -311,31 +317,43 @@ static void Key( unsigned char key, int x, int y )
          break;
       case 's':
          if (fogStart > 0.0) {
-            fogStart -= 1.0;
+            fogStart -= 0.25;
          }
          SetFogMode(fogMode);
          break;
       case 'S':
-         if (fogStart < fogEnd) {
-            fogStart += 1.0;
+         if (fogStart < 100.0) {
+            fogStart += 0.25;
          }
          SetFogMode(fogMode);
          break;
       case 'e':
-         if (fogEnd > fogStart) {
-            fogEnd -= 1.0;
+         if (fogEnd > 0.0) {
+            fogEnd -= 0.25;
          }
          SetFogMode(fogMode);
          break;
       case 'E':
          if (fogEnd < 100.0) {
-            fogEnd += 1.0;
+            fogEnd += 0.25;
          }
          SetFogMode(fogMode);
          break;
       case 'c':
          fogCoord = SetFogCoord(fogCoord ^ GL_TRUE);
          break;
+      case 't':
+         Texture = !Texture;
+         break;
+      case 'z':
+         camz -= 0.1;
+         break;
+      case 'Z':
+         camz += 0.1;
+         break;
+      case 'r':
+         Reset();
+         break;
       case 27:
          exit(0);
          break;
@@ -344,37 +362,28 @@ static void Key( unsigned char key, int x, int y )
 }
 
 
-static void SpecialKey( int key, int x, int y )
+static void
+Init(void)
 {
-   (void) x;
-   (void) y;
-   switch (key) {
-      case GLUT_KEY_UP:
-         if (camz < (DEPTH - 1.0)) {
-            camz += 1.0f;
-         }
-         break;
-      case GLUT_KEY_DOWN:
-         if (camz > -19.0) {
-            camz -= 1.0f;
-         }
-         break;
-   }
-   glutPostRedisplay();
-}
+   static const GLubyte teximage[2][2][4] = {
+      { { 255, 255, 255, 255}, { 128, 128, 128, 255} },
+      { { 128, 128, 128, 255}, { 255, 255, 255, 255} }
+   };
 
+   printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
 
-static void Init( void )
-{
    have_fog_coord = glutExtensionSupported("GL_EXT_fog_coord");
-
-   if (BuildTexture(TEXTURE_FILE, texture) == -1) {
-      exit(1);
+   if (!have_fog_coord) {
+      printf("GL_EXT_fog_coord not supported!\n");
    }
 
-   glEnable(GL_TEXTURE_2D);
-   glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
-   glClearDepth(1.0f);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, teximage);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+   glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
+
    glDepthFunc(GL_LEQUAL);
    glEnable(GL_DEPTH_TEST);
    glShadeModel(GL_SMOOTH);
@@ -383,11 +392,8 @@ static void Init( void )
    glFogfv(GL_FOG_COLOR, fogColor);
    glHint(GL_FOG_HINT, GL_NICEST);
    fogCoord = SetFogCoord(GL_TRUE); /* try to enable fog_coord */
-   fogMode = SetFogMode(2);         /* GL_EXP */
-
-   camz = -19.0f;
+   fogMode = SetFogMode(1);
 
-#if ARRAYS
    glEnableClientState(GL_VERTEX_ARRAY);
    glVertexPointer(3, GL_FLOAT, 0, vertex_pointer);
 
@@ -395,24 +401,24 @@ static void Init( void )
    glTexCoordPointer(2, GL_FLOAT, 0, texcoord_pointer);
 
    if (have_fog_coord) {
-      glFogCoordPointer_ext = (GLFOGCOORDPOINTEREXTPROC)glutGetProcAddress("glFogCoordPointerEXT");
+      glFogCoordPointer_ext = (PFNGLFOGCOORDPOINTEREXTPROC)glutGetProcAddress("glFogCoordPointerEXT");
       glEnableClientState(GL_FOG_COORDINATE_ARRAY_EXT);
       glFogCoordPointer_ext(GL_FLOAT, 0, fogcoord_pointer);
    }
-#endif
+
+   Reset();
 }
 
 
-int main( int argc, char *argv[] )
+int
+main( int argc, char *argv[] )
 {
    glutInit( &argc, argv );
-   glutInitWindowPosition( 0, 0 );
-   glutInitWindowSize( 640, 480 );
+   glutInitWindowSize( 600, 600 );
    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(argv[0]);
    glutReshapeFunc( Reshape );
    glutKeyboardFunc( Key );
-   glutSpecialFunc( SpecialKey );
    glutDisplayFunc( Display );
    Init();
    glutMainLoop();
diff --git a/progs/demos/fslight.c b/progs/demos/fslight.c
index 1c016cc75e9..493ce0e90f1 100644
--- a/progs/demos/fslight.c
+++ b/progs/demos/fslight.c
@@ -20,20 +20,30 @@
 #include <GL/gl.h>
 #include <GL/glut.h>
 #include <GL/glext.h>
+#include "extfuncs.h"
+
+
+#define TEXTURE 0
+
+static GLint CoordAttrib = 0;
+
+static char *FragProgFile = NULL;
+static char *VertProgFile = NULL;
 
 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 lightPos[4] = { 0.0f, 10.0f, 20.0f, 0.0f };
 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 uTexture;
 
+static GLuint SphereList, RectList, CurList;
 static GLint win = 0;
 static GLboolean anim = GL_TRUE;
 static GLboolean wire = GL_FALSE;
@@ -42,24 +52,7 @@ 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 GLfloat xRot = 90.0f, yRot = 0.0f;
 
 
 static void
@@ -69,31 +62,37 @@ normalize(GLfloat *dst, const GLfloat *src)
    dst[0] = src[0] / len;
    dst[1] = src[1] / len;
    dst[2] = src[2] / len;
+   dst[3] = src[3];
 }
 
 
 static void
 Redisplay(void)
 {
+   GLfloat vec[4];
+
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   /* update light position */
+   normalize(vec, lightPos);
+   glLightfv(GL_LIGHT0, GL_POSITION, vec);
    
    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);
+   */
+   glCallList(CurList);
    glPopMatrix();
 
    glutSwapBuffers();
@@ -174,6 +173,12 @@ Key(unsigned char key, int x, int y)
       else
          glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
       break;
+   case 'o':
+      if (CurList == SphereList)
+         CurList = RectList;
+      else
+         CurList = SphereList;
+      break;
    case 'p':
       pixelLight = !pixelLight;
       if (pixelLight)
@@ -217,16 +222,248 @@ SpecialKey(int key, int x, int y)
 
 
 static void
+TestFunctions(void)
+{
+   printf("Error 0x%x at line %d\n", glGetError(), __LINE__);
+   {
+      GLfloat pos[3];
+      printf("Error 0x%x at line %d\n", glGetError(), __LINE__);
+      printf("Light pos %g %g %g\n", pos[0], pos[1], pos[2]);
+   }
+
+
+   {
+      GLfloat m[16], result[16];
+      GLint mPos;
+      int i;
+
+      for (i = 0; i < 16; i++)
+         m[i] = (float) i;
+
+      mPos = glGetUniformLocation_func(program, "m");
+      printf("Error 0x%x at line %d\n", glGetError(), __LINE__);
+      glUniformMatrix4fv_func(mPos, 1, GL_FALSE, m);
+      printf("Error 0x%x at line %d\n", glGetError(), __LINE__);
+
+      glGetUniformfv_func(program, mPos, result);
+      printf("Error 0x%x at line %d\n", glGetError(), __LINE__);
+
+      for (i = 0; i < 16; i++) {
+         printf("%8g %8g\n", m[i], result[i]);
+      }
+   }
+
+   assert(glIsProgram_func(program));
+   assert(glIsShader_func(fragShader));
+   assert(glIsShader_func(vertShader));
+
+   /* attached shaders */
+   {
+      GLuint shaders[20];
+      GLsizei count;
+      int i;
+      glGetAttachedShaders_func(program, 20, &count, shaders);
+      for (i = 0; i < count; i++) {
+         printf("Attached: %u\n", shaders[i]);
+         assert(shaders[i] == fragShader ||
+                shaders[i] == vertShader);
+      }
+   }
+
+   {
+      GLchar log[1000];
+      GLsizei len;
+      glGetShaderInfoLog_func(vertShader, 1000, &len, log);
+      printf("Vert Shader Info Log: %s\n", log);
+      glGetShaderInfoLog_func(fragShader, 1000, &len, log);
+      printf("Frag Shader Info Log: %s\n", log);
+      glGetProgramInfoLog_func(program, 1000, &len, log);
+      printf("Program Info Log: %s\n", log);
+   }
+}
+
+
+#if TEXTURE
+static void
+MakeTexture(void)
+{
+#define SZ0 64
+#define SZ1 32
+   GLubyte image0[SZ0][SZ0][SZ0][4];
+   GLubyte image1[SZ1][SZ1][SZ1][4];
+   GLuint i, j, k;
+
+   /* level 0: two-tone gray checkboard */
+   for (i = 0; i < SZ0; i++) {
+      for (j = 0; j < SZ0; j++) {
+         for (k = 0; k < SZ0; k++) {
+            if ((i/8 + j/8 + k/8) & 1) {
+               image0[i][j][k][0] = 
+               image0[i][j][k][1] = 
+               image0[i][j][k][2] = 200;
+            }
+            else {
+               image0[i][j][k][0] = 
+               image0[i][j][k][1] = 
+               image0[i][j][k][2] = 100;
+            }
+            image0[i][j][k][3] = 255;
+         }
+      }
+   }
+
+   /* level 1: two-tone green checkboard */
+   for (i = 0; i < SZ1; i++) {
+      for (j = 0; j < SZ1; j++) {
+         for (k = 0; k < SZ1; k++) {
+            if ((i/8 + j/8 + k/8) & 1) {
+               image1[i][j][k][0] = 0;
+               image1[i][j][k][1] = 250;
+               image1[i][j][k][2] = 0;
+            }
+            else {
+               image1[i][j][k][0] = 0;
+               image1[i][j][k][1] = 200;
+               image1[i][j][k][2] = 0;
+            }
+            image1[i][j][k][3] = 255;
+         }
+      }
+   }
+
+   glActiveTexture(GL_TEXTURE2); /* unit 2 */
+   glBindTexture(GL_TEXTURE_2D, 42);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ0, SZ0, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image0);
+   glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, SZ1, SZ1, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image1);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+   glActiveTexture(GL_TEXTURE4); /* unit 4 */
+   glBindTexture(GL_TEXTURE_3D, 43);
+   glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA, SZ0, SZ0, SZ0, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image0);
+   glTexImage3D(GL_TEXTURE_3D, 1, GL_RGBA, SZ1, SZ1, SZ1, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image1);
+   glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAX_LEVEL, 1);
+   glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+   glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+}
+#endif
+
+
+static void
+MakeSphere(void)
+{
+   GLUquadricObj *obj = gluNewQuadric();
+   SphereList = glGenLists(1);
+   gluQuadricTexture(obj, GL_TRUE);
+   glNewList(SphereList, GL_COMPILE);
+   gluSphere(obj, 2.0f, 10, 5);
+   glEndList();
+}
+
+static void
+VertAttrib(GLint index, float x, float y)
+{
+#if 1
+   glVertexAttrib2f_func(index, x, y);
+#else
+   glTexCoord2f(x, y);
+#endif
+}
+
+static void
+MakeRect(void)
+{
+   RectList = glGenLists(1);
+   glNewList(RectList, GL_COMPILE);
+   glNormal3f(0, 0, 1);
+   glBegin(GL_POLYGON);
+   VertAttrib(CoordAttrib, 0, 0);   glVertex2f(-2, -2);
+   VertAttrib(CoordAttrib, 1, 0);   glVertex2f( 2, -2);
+   VertAttrib(CoordAttrib, 1, 1);   glVertex2f( 2,  2);
+   VertAttrib(CoordAttrib, 0, 1);   glVertex2f(-2,  2);
+   glEnd();    /* XXX omit this and crash! */
+   glEndList();
+}
+
+
+
+static void
+LoadAndCompileShader(GLuint shader, const char *text)
+{
+   GLint stat;
+
+   glShaderSource_func(shader, 1, (const GLchar **) &text, NULL);
+
+   glCompileShader_func(shader);
+
+   glGetShaderiv_func(shader, GL_COMPILE_STATUS, &stat);
+   if (!stat) {
+      GLchar log[1000];
+      GLsizei len;
+      glGetShaderInfoLog_func(shader, 1000, &len, log);
+      fprintf(stderr, "fslight: problem compiling shader:\n%s\n", log);
+      exit(1);
+   }
+}
+
+
+/**
+ * Read a shader from a file.
+ */
+static void
+ReadShader(GLuint shader, const char *filename)
+{
+   const int max = 100*1000;
+   int n;
+   char *buffer = (char*) malloc(max);
+   FILE *f = fopen(filename, "r");
+   if (!f) {
+      fprintf(stderr, "fslight: Unable to open shader file %s\n", filename);
+      exit(1);
+   }
+
+   n = fread(buffer, 1, max, f);
+   printf("fslight: read %d bytes from shader file %s\n", n, filename);
+   if (n > 0) {
+      buffer[n] = 0;
+      LoadAndCompileShader(shader, buffer);
+   }
+
+   fclose(f);
+   free(buffer);
+}
+
+
+static void
+CheckLink(GLuint prog)
+{
+   GLint stat;
+   glGetProgramiv_func(prog, GL_LINK_STATUS, &stat);
+   if (!stat) {
+      GLchar log[1000];
+      GLsizei len;
+      glGetProgramInfoLog_func(prog, 1000, &len, log);
+      fprintf(stderr, "Linker error:\n%s\n", log);
+   }
+}
+
+
+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"
+      "   float dotProd = max(dot(gl_LightSource[0].position.xyz, \n"
+      "                           normalize(normal)), 0.0);\n"
       "   // Compute diffuse and specular contributions\n"
       "   gl_FragColor = diffuse * dotProd + specular * pow(dotProd, 20.0);\n"
       "}\n";
@@ -236,53 +473,63 @@ Init(void)
       "   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);*/
+      printf("This program requires OpenGL 2.x, found %s\n", version);
+      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");
+   GetExtensionFuncs();
 
    fragShader = glCreateShader_func(GL_FRAGMENT_SHADER);
-   glShaderSource_func(fragShader, 1, &fragShaderText, NULL);
-   glCompileShader_func(fragShader);
+   if (FragProgFile)
+      ReadShader(fragShader, FragProgFile);
+   else
+      LoadAndCompileShader(fragShader, fragShaderText);
+
 
    vertShader = glCreateShader_func(GL_VERTEX_SHADER);
-   glShaderSource_func(vertShader, 1, &vertShaderText, NULL);
-   glCompileShader_func(vertShader);
+   if (VertProgFile)
+      ReadShader(vertShader, VertProgFile);
+   else
+      LoadAndCompileShader(vertShader, vertShaderText);
 
    program = glCreateProgram_func();
    glAttachShader_func(program, fragShader);
    glAttachShader_func(program, vertShader);
    glLinkProgram_func(program);
+   CheckLink(program);
    glUseProgram_func(program);
 
-   uLightPos = glGetUniformLocation_func(program, "lightPos");
    uDiffuse = glGetUniformLocation_func(program, "diffuse");
    uSpecular = glGetUniformLocation_func(program, "specular");
+   uTexture = glGetUniformLocation_func(program, "texture");
+   printf("DiffusePos %d  SpecularPos %d  TexturePos %d\n",
+          uDiffuse, uSpecular, uTexture);
 
    glUniform4fv_func(uDiffuse, 1, diffuse);
    glUniform4fv_func(uSpecular, 1, specular);
+   /*   assert(glGetError() == 0);*/
+   glUniform1i_func(uTexture, 2);  /* use texture unit 2 */
+   /*assert(glGetError() == 0);*/
+
+   if (CoordAttrib) {
+      int i;
+      glBindAttribLocation_func(program, CoordAttrib, "coord");
+      i = glGetAttribLocation_func(program, "coord");
+      assert(i >= 0);
+      if (i != CoordAttrib) {
+         printf("Hmmm, NVIDIA bug?\n");
+         CoordAttrib = i;
+      }
+      else {
+         printf("Mesa bind attrib: coord = %d\n", i);
+      }
+   }
+
+   /*assert(glGetError() == 0);*/
 
    glClearColor(0.3f, 0.3f, 0.3f, 0.0f);
    glEnable(GL_DEPTH_TEST);
@@ -292,11 +539,20 @@ Init(void)
    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, specular);
    glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 20.0f);
 
+   MakeSphere();
+   MakeRect();
+
+   CurList = SphereList;
+
+#if TEXTURE
+   MakeTexture();
+#endif
+
    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() */
-   {
+   if (0) {
       GLsizei len = strlen(fragShaderText) + 1;
       GLsizei lenOut;
       GLchar *src =(GLchar *) malloc(len * sizeof(GLchar));
@@ -310,6 +566,37 @@ Init(void)
    assert(glIsProgram_func(program));
    assert(glIsShader_func(fragShader));
    assert(glIsShader_func(vertShader));
+
+   glColor3f(1, 0, 0);
+
+   /* for testing state vars */
+   {
+      static GLfloat fc[4] = { 1, 1, 0, 0 };
+      static GLfloat amb[4] = { 1, 0, 1, 0 };
+      glFogfv(GL_FOG_COLOR, fc);
+      glLightfv(GL_LIGHT1, GL_AMBIENT, amb);
+   }
+
+#if 0
+   TestFunctions();
+#else
+   (void) TestFunctions;
+#endif
+}
+
+
+static void
+ParseOptions(int argc, char *argv[])
+{
+   int i;
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-fs") == 0) {
+         FragProgFile = argv[i+1];
+      }
+      else if (strcmp(argv[i], "-vs") == 0) {
+         VertProgFile = argv[i+1];
+      }
+   }
 }
 
 
@@ -327,8 +614,10 @@ main(int argc, char *argv[])
    glutDisplayFunc(Redisplay);
    if (anim)
       glutIdleFunc(Idle);
+   ParseOptions(argc, argv);
    Init();
    glutMainLoop();
    return 0;
 }
 
+
diff --git a/progs/demos/texdown.c b/progs/demos/texdown.c
index fc98fddb310..5fecd9a1489 100644
--- a/progs/demos/texdown.c
+++ b/progs/demos/texdown.c
@@ -149,7 +149,7 @@ TypeStr(GLenum type)
  */
 #define ALIGN (1<<12)
 
-static unsigned align(unsigned value, unsigned a)
+static unsigned long align(unsigned long value, unsigned long a)
 {
    return (value + a - 1) & ~(a-1);
 }
@@ -186,10 +186,10 @@ MeasureDownloadRate(void)
 
    printf("alloc %p %p\n", orig_texImage, orig_getImage);
 
-   texImage = (GLubyte *)align((unsigned)orig_texImage, ALIGN);
-   getImage = (GLubyte *)align((unsigned)orig_getImage, ALIGN);   
+   texImage = (GLubyte *)align((unsigned long)orig_texImage, ALIGN);
+   getImage = (GLubyte *)align((unsigned long)orig_getImage, ALIGN);   
 
-   for (i = 1; !(((unsigned)texImage) & i); i<<=1)
+   for (i = 1; !(((unsigned long)texImage) & i); i<<=1)
       ;
    printf("texture image alignment: %d bytes (%p)\n", i, texImage);
       
diff --git a/progs/demos/winpos.c b/progs/demos/winpos.c
index 2ee1df69fbc..3a1a19ecdb9 100644
--- a/progs/demos/winpos.c
+++ b/progs/demos/winpos.c
@@ -77,7 +77,7 @@ static void init( void )
       WindowPosFunc = &glWindowPos2fARB;
    }
    else
-#elif defined(GL_ARB_window_pos)
+#elif defined(GL_MESA_window_pos)
    if (glutExtensionSupported("GL_MESA_window_pos")) {
       printf("Using GL_MESA_window_pos\n");
       WindowPosFunc = &glWindowPos2fMESA;