Merge branch 'origin' into glsl-compiler-1

Conflicts:

	src/mesa/main/state.c
	src/mesa/shader/program.c
	src/mesa/shader/program.h
	src/mesa/shader/programopt.c
	src/mesa/shader/slang/slang_execute.c
	src/mesa/sources
	src/mesa/swrast/s_arbshader.c
	src/mesa/swrast/s_context.c
	src/mesa/swrast/s_span.c
	src/mesa/swrast/s_zoom.c
	src/mesa/tnl/t_context.c
	src/mesa/tnl/t_save_api.c
	src/mesa/tnl/t_vb_arbprogram.c
	src/mesa/tnl/t_vp_build.c
	src/mesa/tnl/t_vtx_eval.c

23 files changed, 1263 insertions, 18 deletions

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/tests/mipmap_limits.c b/progs/tests/mipmap_limits.c
index 3bcb8a88584..dc066cab1f0 100644
--- a/progs/tests/mipmap_limits.c
+++ b/progs/tests/mipmap_limits.c
@@ -127,7 +127,7 @@ static void display(void)
    GLfloat tcm = 4.0;
     printf("BASE_LEVEL = %d  MAX_LEVEL = %d  MIN_LOD = %f MAX_LOD = %f Bias = %.2g  filter = %s\n",
            BaseLevel, MaxLevel, MinLod, MaxLod, LodBias,
-           NearestFilter ? "LINEAR" : "NEAREST");
+           NearestFilter ? "NEAREST" : "LINEAR");
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, BaseLevel);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, MaxLevel);
 
diff --git a/progs/trivial/Makefile b/progs/trivial/Makefile
index b9ed5c70dc5..341c115c07d 100644
--- a/progs/trivial/Makefile
+++ b/progs/trivial/Makefile
@@ -40,11 +40,16 @@ SOURCES = \
 	quad-tex-2d.c \
 	quad-tex-pbo.c \
 	quad-tex-3d.c \
-	quad-tex-dep.c \
 	quad.c \
 	quads.c \
 	quadstrip.c \
 	quadstrip-flat.c \
+	dlist-edgeflag.c \
+	dlist-dangling.c \
+	dlist-edgeflag-dangling.c \
+	drawrange.c \
+	drawelements.c \
+	drawarrays.c \
 	tri-blend.c \
 	tri-tex-3d.c \
 	tri-clip.c \
@@ -61,6 +66,9 @@ SOURCES = \
 	tri.c \
 	tristrip-clip.c \
 	tristrip.c \
+	vbo-drawrange.c \
+	vbo-drawelements.c \
+	vbo-drawarrays.c \
 	vp-clip.c \
 	vp-tri.c \
 	vp-line-clip.c \
diff --git a/progs/trivial/dlist-dangling.c b/progs/trivial/dlist-dangling.c
new file mode 100644
index 00000000000..97f878e96b9
--- /dev/null
+++ b/progs/trivial/dlist-dangling.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+#define CI_OFFSET_1 16
+#define CI_OFFSET_2 32
+
+
+GLenum doubleBuffer;
+GLint list;
+
+static void Init(void)
+{
+   fprintf(stderr, "GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+   fprintf(stderr, "GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+   fprintf(stderr, "GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+
+   glClearColor(0.0, 0.0, 1.0, 0.0);
+
+
+   list = glGenLists(1);
+   glNewList(list, GL_COMPILE); 
+   glBegin(GL_TRIANGLES);
+   glVertex3f( 0.9, -0.9, -30.0);
+   glVertex3f( 0.9,  0.9, -30.0);
+   glColor3f(.8,0,0); 
+   glVertex3f(-0.9,  0.0, -30.0);
+   glEnd();
+   glEndList();
+}
+
+static void Reshape(int width, int height)
+{
+
+    glViewport(0, 0, (GLint)width, (GLint)height);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+    glMatrixMode(GL_MODELVIEW);
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+    switch (key) {
+      case 27:
+	exit(1);
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+
+
+
+static void Draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT); 
+
+   glColor3f(0,.9,0); 
+   glCallList(list);
+
+   glRotatef(45,0,0,1);
+   glColor3f(1,0,1); 
+   glCallList(list);
+
+   glFlush();
+
+   if (doubleBuffer) {
+      glutSwapBuffers();
+   }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    fprintf(stderr, "%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+    GLenum type;
+
+    glutInit(&argc, argv);
+
+    if (Args(argc, argv) == GL_FALSE) {
+	exit(1);
+    }
+
+    glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
+
+    type = GLUT_RGB;
+    type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+    glutInitDisplayMode(type);
+
+    if (glutCreateWindow("First Tri") == GL_FALSE) {
+	exit(1);
+    }
+
+    Init();
+
+    glutReshapeFunc(Reshape);
+    glutKeyboardFunc(Key);
+    glutDisplayFunc(Draw);
+    glutMainLoop();
+	return 0;
+}
diff --git a/progs/trivial/dlist-edgeflag-dangling.c b/progs/trivial/dlist-edgeflag-dangling.c
new file mode 100644
index 00000000000..31300efd842
--- /dev/null
+++ b/progs/trivial/dlist-edgeflag-dangling.c
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+#define CI_OFFSET_1 16
+#define CI_OFFSET_2 32
+
+
+GLenum doubleBuffer;
+GLint list;
+
+static void Init(void)
+{
+   fprintf(stderr, "GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+   fprintf(stderr, "GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+   fprintf(stderr, "GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+
+   glClearColor(0.0, 0.0, 1.0, 0.0);
+
+   glPolygonMode(GL_FRONT, GL_LINE);
+   glPolygonMode(GL_BACK, GL_POINT);
+
+   list = glGenLists(1);
+   glNewList(list, GL_COMPILE); 
+   glBegin(GL_TRIANGLES);
+   glVertex3f( 0.9, -0.9, -30.0);
+   glEdgeFlag(1);
+   glVertex3f( 0.9,  0.9, -30.0);
+   glVertex3f(-0.9,  0.0, -30.0);
+   glEnd();
+   glEndList();
+}
+
+static void Reshape(int width, int height)
+{
+
+    glViewport(0, 0, (GLint)width, (GLint)height);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+    glMatrixMode(GL_MODELVIEW);
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+    switch (key) {
+      case 27:
+	exit(1);
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+
+
+
+static void Draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT); 
+
+   glColor3f(0,.9,0); 
+   glEdgeFlag(0);
+   glCallList(list);
+
+   glRotatef(45,0,0,1);
+   glColor3f(1,0,1); 
+   glCallList(list);
+
+   glFlush();
+
+   if (doubleBuffer) {
+      glutSwapBuffers();
+   }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    fprintf(stderr, "%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+    GLenum type;
+
+    glutInit(&argc, argv);
+
+    if (Args(argc, argv) == GL_FALSE) {
+	exit(1);
+    }
+
+    glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
+
+    type = GLUT_RGB;
+    type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+    glutInitDisplayMode(type);
+
+    if (glutCreateWindow("First Tri") == GL_FALSE) {
+	exit(1);
+    }
+
+    Init();
+
+    glutReshapeFunc(Reshape);
+    glutKeyboardFunc(Key);
+    glutDisplayFunc(Draw);
+    glutMainLoop();
+	return 0;
+}
diff --git a/progs/trivial/dlist-edgeflag.c b/progs/trivial/dlist-edgeflag.c
new file mode 100644
index 00000000000..fa97f041035
--- /dev/null
+++ b/progs/trivial/dlist-edgeflag.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+#define CI_OFFSET_1 16
+#define CI_OFFSET_2 32
+
+
+GLenum doubleBuffer;
+GLint list;
+
+static void Init(void)
+{
+   fprintf(stderr, "GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+   fprintf(stderr, "GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+   fprintf(stderr, "GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+
+   glClearColor(0.0, 0.0, 1.0, 0.0);
+
+   glPolygonMode(GL_FRONT, GL_LINE);
+   glPolygonMode(GL_BACK, GL_POINT);
+
+   list = glGenLists(1);
+   glNewList(list, GL_COMPILE); 
+   glBegin(GL_TRIANGLES);
+   glEdgeFlag(1);
+/*    glColor3f(0,0,.7);  */
+   glVertex3f( 0.9, -0.9, -30.0);
+   glEdgeFlag(0);
+/*    glColor3f(.8,0,0);  */
+   glVertex3f( 0.9,  0.9, -30.0);
+   glEdgeFlag(1);
+/*    glColor3f(0,.9,0);  */
+   glVertex3f(-0.9,  0.0, -30.0);
+   glEnd();
+   glEndList();
+}
+
+static void Reshape(int width, int height)
+{
+
+    glViewport(0, 0, (GLint)width, (GLint)height);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+    glMatrixMode(GL_MODELVIEW);
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+    switch (key) {
+      case 27:
+	exit(1);
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+
+
+
+static void Draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT); 
+
+   glColor3f(0,.9,0); 
+   glCallList(list);
+
+   glRotatef(45,0,0,1);
+   glColor3f(1,0,1); 
+   glCallList(list);
+
+   glFlush();
+
+   if (doubleBuffer) {
+      glutSwapBuffers();
+   }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    fprintf(stderr, "%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+    GLenum type;
+
+    glutInit(&argc, argv);
+
+    if (Args(argc, argv) == GL_FALSE) {
+	exit(1);
+    }
+
+    glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
+
+    type = GLUT_RGB;
+    type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+    glutInitDisplayMode(type);
+
+    if (glutCreateWindow("First Tri") == GL_FALSE) {
+	exit(1);
+    }
+
+    Init();
+
+    glutReshapeFunc(Reshape);
+    glutKeyboardFunc(Key);
+    glutDisplayFunc(Draw);
+    glutMainLoop();
+	return 0;
+}
diff --git a/progs/trivial/drawarrays.c b/progs/trivial/drawarrays.c
new file mode 100644
index 00000000000..596eee9eef1
--- /dev/null
+++ b/progs/trivial/drawarrays.c
@@ -0,0 +1,127 @@
+/* Basic VBO */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+
+struct {
+   GLfloat pos[3];
+   GLubyte color[4];
+} verts[] =  
+{
+   { {  0.9, -0.9, 0.0 },
+     { 0x00, 0x00, 0xff, 0x00 } 
+   },
+
+   { {  0.9,  0.9, 0.0 },
+     { 0x00, 0xff, 0x00, 0x00 }
+   },
+
+   { { -0.9,  0.9, 0.0 },
+     { 0xff, 0x00, 0x00, 0x00 } 
+   },
+
+   { { -0.9, -0.9, 0.0 },
+     { 0xff, 0xff, 0xff, 0x00 }
+   },
+};
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), verts[0].pos );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, sizeof(verts[0]), verts[0].color );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_ARB);
+
+//   glDrawArrays( GL_TRIANGLES, 0, 3 );
+   glDrawArrays( GL_TRIANGLES, 1, 3 );
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/trivial/drawelements.c b/progs/trivial/drawelements.c
new file mode 100644
index 00000000000..e0c8e80b68c
--- /dev/null
+++ b/progs/trivial/drawelements.c
@@ -0,0 +1,120 @@
+/* Test rebasing */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+GLfloat verts[][4] = {
+   {  0.9, -0.9, 0.0, 1.0 },
+   {  0.9,  0.9, 0.0, 1.0 },
+   { -0.9,  0.9, 0.0, 1.0 },
+   { -0.9, -0.9, 0.0, 1.0 },
+};
+
+GLubyte color[][4] = {
+   { 0x00, 0x00, 0xff, 0x00 },
+   { 0x00, 0xff, 0x00, 0x00 },
+   { 0xff, 0x00, 0x00, 0x00 },
+   { 0xff, 0xff, 0xff, 0x00 },
+};
+
+GLuint indices[] = { 1, 2, 3 };
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), verts );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, 0, color );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_NV);
+
+   /* Should have min_index == 1, maybe force a rebase:
+    */
+   glDrawElements( GL_TRIANGLES, 3, GL_UNSIGNED_INT, indices );
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/trivial/drawrange.c b/progs/trivial/drawrange.c
new file mode 100644
index 00000000000..9c787cbfcde
--- /dev/null
+++ b/progs/trivial/drawrange.c
@@ -0,0 +1,118 @@
+/* Test rebasing */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+GLfloat verts[][4] = {
+   {  0.9, -0.9, 0.0, 1.0 },
+   {  0.9,  0.9, 0.0, 1.0 },
+   { -0.9,  0.9, 0.0, 1.0 },
+   { -0.9, -0.9, 0.0, 1.0 },
+};
+
+GLubyte color[][4] = {
+   { 0x00, 0x00, 0xff, 0x00 },
+   { 0x00, 0xff, 0x00, 0x00 },
+   { 0xff, 0x00, 0x00, 0x00 },
+   { 0xff, 0xff, 0xff, 0x00 },
+};
+
+GLuint indices[] = { 1, 2, 3 };
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), verts );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, 0, color );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_NV);
+
+   glDrawRangeElements( GL_TRIANGLES, 1, 3, 3, GL_UNSIGNED_INT, indices );
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/trivial/vbo-drawarrays.c b/progs/trivial/vbo-drawarrays.c
new file mode 100644
index 00000000000..fb590098a32
--- /dev/null
+++ b/progs/trivial/vbo-drawarrays.c
@@ -0,0 +1,133 @@
+/* Basic VBO */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+
+struct {
+   GLfloat pos[3];
+   GLubyte color[4];
+} verts[] =  
+{
+   { {  0.9, -0.9, 0.0 },
+     { 0x00, 0x00, 0xff, 0x00 } 
+   },
+
+   { {  0.9,  0.9, 0.0 },
+     { 0x00, 0xff, 0x00, 0x00 }
+   },
+
+   { { -0.9,  0.9, 0.0 },
+     { 0xff, 0x00, 0x00, 0x00 } 
+   },
+
+   { { -0.9, -0.9, 0.0 },
+     { 0xff, 0xff, 0xff, 0x00 }
+   },
+};
+
+GLuint arrayObj, elementObj;
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+
+   glGenBuffersARB(1, &arrayObj);
+   glBindBufferARB(GL_ARRAY_BUFFER_ARB, arrayObj);
+   glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts, GL_STATIC_DRAW_ARB);
+
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), 0 );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, sizeof(verts[0]), (void *)(3*sizeof(float)) );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_ARB);
+
+//   glDrawArrays( GL_TRIANGLES, 0, 3 );
+   glDrawArrays( GL_TRIANGLES, 1, 3 );
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/trivial/vbo-drawelements.c b/progs/trivial/vbo-drawelements.c
new file mode 100644
index 00000000000..dddb45695cb
--- /dev/null
+++ b/progs/trivial/vbo-drawelements.c
@@ -0,0 +1,137 @@
+/* Basic VBO */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+struct {
+   GLfloat pos[3];
+   GLubyte color[4];
+} verts[] =  
+{
+   { {  0.9, -0.9, 0.0 },
+     { 0x00, 0x00, 0xff, 0x00 } 
+   },
+
+   { {  0.9,  0.9, 0.0 },
+     { 0x00, 0xff, 0x00, 0x00 }
+   },
+
+   { { -0.9,  0.9, 0.0 },
+     { 0xff, 0x00, 0x00, 0x00 } 
+   },
+
+   { { -0.9, -0.9, 0.0 },
+     { 0xff, 0xff, 0xff, 0x00 }
+   },
+};
+
+GLuint indices[] = { 0, 1, 2, 3 };
+
+GLuint arrayObj, elementObj;
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+
+   glGenBuffersARB(1, &arrayObj);
+   glGenBuffersARB(1, &elementObj);
+
+   glBindBufferARB(GL_ARRAY_BUFFER_ARB, arrayObj);
+   glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, elementObj);
+
+   glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts, GL_STATIC_DRAW_ARB);
+   glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(indices), indices, GL_STATIC_DRAW_ARB);
+
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), 0 );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, sizeof(verts[0]), (void *)(3*sizeof(float)) );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_ARB);
+   glDrawElements( GL_TRIANGLES, 3, GL_UNSIGNED_INT, NULL );
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/trivial/vbo-drawrange.c b/progs/trivial/vbo-drawrange.c
new file mode 100644
index 00000000000..407b7541f07
--- /dev/null
+++ b/progs/trivial/vbo-drawrange.c
@@ -0,0 +1,145 @@
+/* Basic VBO */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+#define ELTOBJ 0
+
+struct {
+   GLfloat pos[3];
+   GLubyte color[4];
+} verts[] =  
+{
+   { {  0.9, -0.9, 0.0 },
+     { 0x00, 0x00, 0xff, 0x00 } 
+   },
+
+   { {  0.9,  0.9, 0.0 },
+     { 0x00, 0xff, 0x00, 0x00 }
+   },
+
+   { { -0.9,  0.9, 0.0 },
+     { 0xff, 0x00, 0x00, 0x00 } 
+   },
+
+   { { -0.9, -0.9, 0.0 },
+     { 0xff, 0xff, 0xff, 0x00 }
+   },
+};
+
+GLuint indices[] = { 1, 2, 3 };
+
+GLuint arrayObj, elementObj;
+
+static void Init( void )
+{
+   GLint errno;
+   GLuint prognum;
+   
+   static const char *prog1 =
+      "!!ARBvp1.0\n"
+      "MOV  result.color, vertex.color;\n"
+      "MOV  result.position, vertex.position;\n"
+      "END\n";
+
+   glGenProgramsARB(1, &prognum);
+   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+		      strlen(prog1), (const GLubyte *) prog1);
+
+   assert(glIsProgramARB(prognum));
+   errno = glGetError();
+   printf("glGetError = %d\n", errno);
+   if (errno != GL_NO_ERROR)
+   {
+      GLint errorpos;
+
+      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+      printf("errorpos: %d\n", errorpos);
+      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+   }
+
+
+   glEnableClientState( GL_VERTEX_ARRAY );
+   glEnableClientState( GL_COLOR_ARRAY );
+
+   glGenBuffersARB(1, &arrayObj);
+   glBindBufferARB(GL_ARRAY_BUFFER_ARB, arrayObj);
+   glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts, GL_STATIC_DRAW_ARB);
+
+#if ELTOBJ
+   glGenBuffersARB(1, &elementObj);
+   glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, elementObj);
+   glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(indices), indices, GL_STATIC_DRAW_ARB);
+#endif
+
+   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), 0 );
+   glColorPointer( 4, GL_UNSIGNED_BYTE, sizeof(verts[0]), (void *)(3*sizeof(float)) );
+
+}
+
+
+
+static void Display( void )
+{
+   glClearColor(0.3, 0.3, 0.3, 1);
+   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+   glEnable(GL_VERTEX_PROGRAM_ARB);
+
+#if ELTOBJ
+   glDrawRangeElements( GL_TRIANGLES, 1, 3, 3, GL_UNSIGNED_INT, NULL );
+#else
+   glDrawRangeElements( GL_TRIANGLES, 1, 3, 3, GL_UNSIGNED_INT, indices );
+#endif
+
+   glFlush(); 
+}
+
+
+static void Reshape( int width, int height )
+{
+   glViewport( 0, 0, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+   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:
+         exit(0);
+         break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+   glutInit( &argc, argv );
+   glutInitWindowPosition( 0, 0 );
+   glutInitWindowSize( 250, 250 );
+   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
+   glutCreateWindow(argv[0]);
+   glutReshapeFunc( Reshape );
+   glutKeyboardFunc( Key );
+   glutDisplayFunc( Display );
+   Init();
+   glutMainLoop();
+   return 0;
+}
diff --git a/progs/xdemos/Makefile b/progs/xdemos/Makefile
index 4ca8b107a24..ec85464bec0 100644
--- a/progs/xdemos/Makefile
+++ b/progs/xdemos/Makefile
@@ -24,11 +24,11 @@ PROGS = glthreads \
 	pbinfo \
 	pbdemo \
 	wincopy \
-	xdemo \
 	xfont \
 	xrotfontdemo \
 	yuvrect_client
 
+# omit this XMesa API demo:	xdemo
 
 
 ##### RULES #####
diff --git a/progs/xdemos/glthreads.c b/progs/xdemos/glthreads.c
index 83413383dd4..989697fbcaa 100644
--- a/progs/xdemos/glthreads.c
+++ b/progs/xdemos/glthreads.c
@@ -473,7 +473,7 @@ main(int argc, char *argv[])
 
       dpy = XOpenDisplay(displayName);
       if (!dpy) {
-         fprintf(stderr, "Unable to open display %s\n", displayName);
+         fprintf(stderr, "Unable to open display %s\n", XDisplayName(displayName));
          return -1;
       }
    }
diff --git a/progs/xdemos/glxcontexts.c b/progs/xdemos/glxcontexts.c
index fbc296ef625..a9ff326ed5e 100644
--- a/progs/xdemos/glxcontexts.c
+++ b/progs/xdemos/glxcontexts.c
@@ -587,8 +587,8 @@ main(int argc, char *argv[])
 
    dpy = XOpenDisplay(dpyName);
    if (!dpy) {
-      printf("Error: couldn't open display %s\n",
-	     dpyName ? dpyName : getenv("DISPLAY"));
+      fprintf(stderr, "Error: couldn't open display %s\n",
+	      XDisplayName(dpyName));
       return -1;
    }
 
diff --git a/progs/xdemos/glxgears_fbconfig.c b/progs/xdemos/glxgears_fbconfig.c
index acbadd21ac5..2dac00b75d1 100644
--- a/progs/xdemos/glxgears_fbconfig.c
+++ b/progs/xdemos/glxgears_fbconfig.c
@@ -575,7 +575,7 @@ main(int argc, char *argv[])
 
    dpy = XOpenDisplay(dpyName);
    if (!dpy) {
-      printf("Error: couldn't open display %s\n", dpyName);
+      printf("Error: couldn't open display %s\n", XDisplayName(dpyName));
       return -1;
    }
 
diff --git a/progs/xdemos/glxheads.c b/progs/xdemos/glxheads.c
index 0145a70e91c..b3290e90d51 100644
--- a/progs/xdemos/glxheads.c
+++ b/progs/xdemos/glxheads.c
@@ -57,7 +57,7 @@ static int NumHeads = 0;
 static void
 Error(const char *display, const char *msg)
 {
-   fprintf(stderr, "Error on display %s - %s\n", display, msg);
+   fprintf(stderr, "Error on display %s - %s\n", XDisplayName(display), msg);
    exit(1);
 }
 
diff --git a/progs/xdemos/glxinfo.c b/progs/xdemos/glxinfo.c
index a1aca5ad31e..3e8e0be5203 100644
--- a/progs/xdemos/glxinfo.c
+++ b/progs/xdemos/glxinfo.c
@@ -939,7 +939,7 @@ main(int argc, char *argv[])
 
    dpy = XOpenDisplay(displayName);
    if (!dpy) {
-      fprintf(stderr, "Error: unable to open display %s\n", displayName);
+      fprintf(stderr, "Error: unable to open display %s\n", XDisplayName(displayName));
       return -1;
    }
 
diff --git a/progs/xdemos/glxswapcontrol.c b/progs/xdemos/glxswapcontrol.c
index 0ed5ebe4722..d9be984be57 100644
--- a/progs/xdemos/glxswapcontrol.c
+++ b/progs/xdemos/glxswapcontrol.c
@@ -749,7 +749,7 @@ main(int argc, char *argv[])
 
    dpy = XOpenDisplay(dpyName);
    if (!dpy) {
-      printf("Error: couldn't open display %s\n", dpyName);
+      printf("Error: couldn't open display %s\n", XDisplayName(dpyName));
       return -1;
    }
 
diff --git a/progs/xdemos/manywin.c b/progs/xdemos/manywin.c
index c9cca751341..cfea555210a 100644
--- a/progs/xdemos/manywin.c
+++ b/progs/xdemos/manywin.c
@@ -59,7 +59,7 @@ static GLuint TexObj = 0;
 static void
 Error(const char *display, const char *msg)
 {
-   fprintf(stderr, "Error on display %s - %s\n", display, msg);
+   fprintf(stderr, "Error on display %s - %s\n", XDisplayName(display), msg);
    exit(1);
 }
 
diff --git a/progs/xdemos/opencloseopen.c b/progs/xdemos/opencloseopen.c
index 2e4de24c71d..0b8d0618431 100644
--- a/progs/xdemos/opencloseopen.c
+++ b/progs/xdemos/opencloseopen.c
@@ -91,7 +91,7 @@ make_window( const char * dpyName, const char *name,
 
    dpy = XOpenDisplay(dpyName);
    if (!dpy) {
-      printf("Error: couldn't open display %s\n", dpyName);
+      printf("Error: couldn't open display %s\n", XDisplayName(dpyName));
       exit(1);
    }
 
diff --git a/progs/xdemos/pbinfo.c b/progs/xdemos/pbinfo.c
index 88d93c8da62..b43adf1bb70 100644
--- a/progs/xdemos/pbinfo.c
+++ b/progs/xdemos/pbinfo.c
@@ -95,7 +95,7 @@ main(int argc, char *argv[])
    dpy = XOpenDisplay(dpyName);
 
    if (!dpy) {
-      printf("Error: couldn't open display %s\n", dpyName ? dpyName : ":0");
+      printf("Error: couldn't open display %s\n", XDisplayName(dpyName));
       return 1;
    }
 
diff --git a/progs/xdemos/yuvrect_client.c b/progs/xdemos/yuvrect_client.c
index 48f82cb7599..e2b79a7c0e1 100644
--- a/progs/xdemos/yuvrect_client.c
+++ b/progs/xdemos/yuvrect_client.c
@@ -296,7 +296,7 @@ main(int argc, char *argv[])
    dpy = XOpenDisplay(dpyName);
    if (!dpy) {
       printf("Error: couldn't open display %s\n",
-	     dpyName ? dpyName : getenv("DISPLAY"));
+	     XDisplayName(dpyName));
       return -1;
    }