Merge remote branch 'origin/gallium-0.2' into gallium-0.2

18 files changed, 495 insertions, 42 deletions

diff --git a/progs/glsl/Makefile b/progs/glsl/Makefile
index 04c1d25ed7..c5d62d2370 100644
--- a/progs/glsl/Makefile
+++ b/progs/glsl/Makefile
@@ -21,6 +21,7 @@ PROGS = \
 	noise \
 	points \
 	pointcoord \
+	skinning \
 	texdemo1 \
 	toyball \
 	twoside \
@@ -148,6 +149,13 @@ pointcoord: pointcoord.o readtex.o shaderutil.o
 	$(APP_CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) pointcoord.o readtex.o shaderutil.o $(LIBS) -o $@
 
 
+skinning.o: skinning.c readtex.h extfuncs.h shaderutil.h
+	$(APP_CC) -c -I$(INCDIR) $(CFLAGS) skinning.c
+
+skinning: skinning.o readtex.o shaderutil.o
+	$(APP_CC) -I$(INCDIR) $(CFLAGS) $(LDFLAGS) skinning.o readtex.o shaderutil.o $(LIBS) -o $@
+
+
 texdemo1.o: texdemo1.c readtex.h extfuncs.h shaderutil.h
 	$(APP_CC) -c -I$(INCDIR) $(CFLAGS) texdemo1.c
 
diff --git a/progs/glsl/bump.c b/progs/glsl/bump.c
index a2e0916861..b93ab44b5b 100644
--- a/progs/glsl/bump.c
+++ b/progs/glsl/bump.c
@@ -141,9 +141,6 @@ Redisplay(void)
 
    glPopMatrix();
 
-   glFinish();
-   glFlush();
-
    CheckError(__LINE__);
 
    glutSwapBuffers();
diff --git a/progs/glsl/convolutions.c b/progs/glsl/convolutions.c
index a25dad5ba9..ac71c68235 100644
--- a/progs/glsl/convolutions.c
+++ b/progs/glsl/convolutions.c
@@ -439,8 +439,6 @@ static void draw()
 
    glPopMatrix();
 
-   glFlush();
-
    glutSwapBuffers();
 }
 
diff --git a/progs/glsl/identity.c b/progs/glsl/identity.c
index dce140fc64..37579eb346 100644
--- a/progs/glsl/identity.c
+++ b/progs/glsl/identity.c
@@ -22,7 +22,7 @@ static GLuint fragShader;
 static GLuint vertShader;
 static GLuint program;
 static GLint win = 0;
-static GLboolean anim = GL_TRUE;
+static GLboolean anim = GL_FALSE;
 static GLfloat xRot = 0.0f, yRot = 0.0f;
 static int w,h;
 
diff --git a/progs/glsl/mandelbrot.c b/progs/glsl/mandelbrot.c
index e6361b429b..24e1992665 100644
--- a/progs/glsl/mandelbrot.c
+++ b/progs/glsl/mandelbrot.c
@@ -74,8 +74,6 @@ Redisplay(void)
 
    glPopMatrix();
 
-   glFinish();
-   glFlush();
    glutSwapBuffers();
 }
 
diff --git a/progs/glsl/multitex.frag b/progs/glsl/multitex.frag
index a2633ceba7..61ef95f3fe 100644
--- a/progs/glsl/multitex.frag
+++ b/progs/glsl/multitex.frag
@@ -7,9 +7,29 @@
 uniform sampler2D tex1;
 uniform sampler2D tex2;
 
-void main()
+vec4 sample(sampler2D t, vec2 coord)
+{
+   return texture2D(t, coord);
+}
+
+void main0()
 {
    vec4 t1 = texture2D(tex1, gl_TexCoord[0].xy);
-   vec4 t2 = texture2D(tex2, gl_TexCoord[1].xy);
+   //vec4 t1 = sample(tex1, gl_TexCoord[0].xy);
+   //vec4 t2 = texture2D(tex2, gl_TexCoord[1].xy);
+   vec4 t2 = sample(tex2, gl_TexCoord[0].xy);
    gl_FragColor = mix(t1, t2, t2.w);
 }
+
+void main()
+{
+   vec4 t1 = sample(tex1, gl_TexCoord[0].xy);
+   vec4 t2 = sample(tex2, gl_TexCoord[0].xy);
+   gl_FragColor = t1 + t2;
+}
+/*
+  0: MOV SAMPLER[0].x, SAMPLER[0];
+  1: MOV TEMP[1], INPUT[4];
+  2: TEX OUTPUT[0], TEMP[1], texture[0], 2D;
+  3: END
+*/
diff --git a/progs/glsl/skinning.c b/progs/glsl/skinning.c
new file mode 100644
index 0000000000..8a65d0667c
--- /dev/null
+++ b/progs/glsl/skinning.c
@@ -0,0 +1,280 @@
+/**
+ * Vertex "skinning" example.
+ * The idea is there are multiple modeling matrices applied to every
+ * vertex.  Weighting values in [0,1] control the influence of each
+ * matrix on each vertex.
+ *
+ * 4 Nov 2008
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/gl.h>
+#include <GL/glut.h>
+#include <GL/glext.h>
+#include "extfuncs.h"
+#include "shaderutil.h"
+
+
+static char *FragProgFile = "skinning.frag";
+static char *VertProgFile = "skinning.vert";
+
+/* program/shader objects */
+static GLuint fragShader;
+static GLuint vertShader;
+static GLuint program;
+
+
+static GLint win = 0;
+static GLboolean Anim = GL_TRUE;
+static GLboolean WireFrame = GL_TRUE;
+static GLfloat xRot = 0.0f, yRot = 90.0f, zRot = 0.0f;
+
+#define NUM_MATS 2
+
+static GLfloat Matrices[NUM_MATS][16];
+static GLint uMat0, uMat1;
+static GLint WeightAttr;
+
+
+static void
+Idle(void)
+{
+   yRot = 90 + glutGet(GLUT_ELAPSED_TIME) * 0.005;
+   glutPostRedisplay();
+}
+
+
+static void
+Cylinder(GLfloat length, GLfloat radius, GLint slices, GLint stacks)
+{
+   float dw = 1.0 / (stacks - 1);
+   float dz = length / stacks;
+   int i, j;
+
+   for (j = 0; j < stacks; j++) {
+      float w0 = j * dw;
+      float z0 = j * dz;
+
+      glBegin(GL_TRIANGLE_STRIP);
+      for (i = 0; i < slices; i++) {
+         float a = (float) i / (slices - 1) * M_PI * 2.0;
+         float x = radius * cos(a);
+         float y = radius * sin(a);
+         glVertexAttrib1f_func(WeightAttr, w0);
+         glNormal3f(x, y, 0.0);
+         glVertex3f(x, y, z0);
+
+         glVertexAttrib1f_func(WeightAttr, w0 + dw);
+         glNormal3f(x, y, 0.0);
+         glVertex3f(x, y, z0 + dz);
+      }
+      glEnd();
+   }
+}
+
+
+/**
+ * Update/animate the two matrices.  One rotates, the other scales.
+ */
+static void
+UpdateMatrices(void)
+{
+   GLfloat t = glutGet(GLUT_ELAPSED_TIME) * 0.0025;
+   GLfloat scale = 0.5 * (1.1 + sin(0.5 * t));
+   GLfloat rot = cos(t) * 90.0;
+
+   glPushMatrix();
+   glLoadIdentity();
+   glScalef(1.0, scale, 1.0);
+   glGetFloatv(GL_MODELVIEW_MATRIX, Matrices[0]);
+   glPopMatrix();
+
+   glPushMatrix();
+   glLoadIdentity();
+   glRotatef(rot, 0, 0, 1);
+   glGetFloatv(GL_MODELVIEW_MATRIX, Matrices[1]);
+   glPopMatrix();
+}
+
+
+static void
+Redisplay(void)
+{
+   UpdateMatrices();
+
+   glUniformMatrix4fv_func(uMat0, 1, GL_FALSE, Matrices[0]);
+   glUniformMatrix4fv_func(uMat1, 1, GL_FALSE, Matrices[1]);
+
+   if (WireFrame)
+      glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+   else
+      glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   
+   glPushMatrix();
+   glRotatef(xRot, 1.0f, 0.0f, 0.0f);
+   glRotatef(yRot, 0.0f, 1.0f, 0.0f);
+   glRotatef(zRot, 0.0f, 0.0f, 1.0f);
+
+   glPushMatrix();
+   glTranslatef(0, 0, -2.5);
+   Cylinder(5.0, 1.0, 10, 20);
+   glPopMatrix();
+
+   glPopMatrix();
+
+   glutSwapBuffers();
+}
+
+
+static void
+Reshape(int width, int height)
+{
+   glViewport(0, 0, width, height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0f, 0.0f, -15.0f);
+}
+
+
+static void
+CleanUp(void)
+{
+   glDeleteShader_func(fragShader);
+   glDeleteShader_func(vertShader);
+   glDeleteProgram_func(program);
+   glutDestroyWindow(win);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+   const GLfloat step = 2.0;
+  (void) x;
+  (void) y;
+
+   switch(key) {
+   case 'a':
+      Anim = !Anim;
+      if (Anim)
+         glutIdleFunc(Idle);
+      else
+         glutIdleFunc(NULL);
+      break;
+   case 'w':
+      WireFrame = !WireFrame;
+      break;
+   case 'z':
+      zRot += step;
+      break;
+   case 'Z':
+      zRot -= step;
+      break;
+   case 27:
+      CleanUp();
+      exit(0);
+      break;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+SpecialKey(int key, int x, int y)
+{
+   const GLfloat step = 2.0;
+
+  (void) x;
+  (void) y;
+
+   switch(key) {
+   case GLUT_KEY_UP:
+      xRot += step;
+      break;
+   case GLUT_KEY_DOWN:
+      xRot -= step;
+      break;
+   case GLUT_KEY_LEFT:
+      yRot -= step;
+      break;
+   case GLUT_KEY_RIGHT:
+      yRot += step;
+      break;
+   }
+   glutPostRedisplay();
+}
+
+
+
+static void
+Init(void)
+{
+   if (!ShadersSupported())
+      exit(1);
+
+   GetExtensionFuncs();
+
+   vertShader = CompileShaderFile(GL_VERTEX_SHADER, VertProgFile);
+   fragShader = CompileShaderFile(GL_FRAGMENT_SHADER, FragProgFile);
+   program = LinkShaders(vertShader, fragShader);
+
+   glUseProgram_func(program);
+
+   uMat0 = glGetUniformLocation_func(program, "mat0");
+   uMat1 = glGetUniformLocation_func(program, "mat1");
+
+   WeightAttr = glGetAttribLocation_func(program, "weight");
+
+   assert(glGetError() == 0);
+
+   glClearColor(0.4f, 0.4f, 0.8f, 0.0f);
+
+   glEnable(GL_DEPTH_TEST);
+
+   glColor3f(1, 0, 0);
+}
+
+
+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];
+      }
+   }
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   glutInit(&argc, argv);
+   glutInitWindowSize(500, 500);
+   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
+   win = glutCreateWindow(argv[0]);
+   glutReshapeFunc(Reshape);
+   glutKeyboardFunc(Key);
+   glutSpecialFunc(SpecialKey);
+   glutDisplayFunc(Redisplay);
+   ParseOptions(argc, argv);
+   Init();
+   if (Anim)
+      glutIdleFunc(Idle);
+   glutMainLoop();
+   return 0;
+}
+
diff --git a/progs/glsl/skinning.frag b/progs/glsl/skinning.frag
new file mode 100644
index 0000000000..9053755a83
--- /dev/null
+++ b/progs/glsl/skinning.frag
@@ -0,0 +1,6 @@
+// color pass-through
+
+void main()
+{
+   gl_FragColor = gl_Color;
+}
diff --git a/progs/glsl/skinning.vert b/progs/glsl/skinning.vert
new file mode 100644
index 0000000000..28970eee58
--- /dev/null
+++ b/progs/glsl/skinning.vert
@@ -0,0 +1,24 @@
+// Vertex weighting/blendin shader
+// Brian Paul
+// 4 Nov 2008
+
+uniform mat4 mat0, mat1;
+attribute float weight;
+
+void main() 
+{
+   // simple diffuse shading
+   // Note that we should really transform the normal vector along with
+   // the postion below... someday.
+   vec3 lightVec = vec3(0, 0, 1);
+   vec3 norm = gl_NormalMatrix * gl_Normal;
+   float dot = 0.2 + max(0.0, dot(norm, lightVec));
+   gl_FrontColor = vec4(dot);
+
+   // compute sum of weighted transformations
+   vec4 pos0 = mat0 * gl_Vertex;
+   vec4 pos1 = mat1 * gl_Vertex;
+   vec4 pos = mix(pos0, pos1, weight);
+
+   gl_Position = gl_ModelViewProjectionMatrix * pos;
+}
diff --git a/progs/glsl/toyball.c b/progs/glsl/toyball.c
index 2daaedd6df..37ad6bf291 100644
--- a/progs/glsl/toyball.c
+++ b/progs/glsl/toyball.c
@@ -79,8 +79,6 @@ Redisplay(void)
 
    glPopMatrix();
 
-   glFinish();
-   glFlush();
    glutSwapBuffers();
 }
 
diff --git a/progs/trivial/tri-stencil.c b/progs/trivial/tri-stencil.c
index 5edbef26ce..7686e16aef 100644
--- a/progs/trivial/tri-stencil.c
+++ b/progs/trivial/tri-stencil.c
@@ -49,7 +49,15 @@ static void Key(unsigned char key, int x, int y)
 
     switch (key) {
       case 27:
+        printf("Exiting...\n");
 	exit(1);
+      case 'r':
+        printf("Redisplaying...\n");
+        glutPostRedisplay();
+        break;
+      default:
+        printf("No such key '%c'...\n", key);
+        break;
     }
 }
 
@@ -89,7 +97,7 @@ static void Draw(void)
    glEnd();
 #endif
 
-#if 0
+#if 1
    glStencilFunc(GL_EQUAL, 1, 1);
    glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 
@@ -130,7 +138,8 @@ int main(int argc, char **argv)
 	exit(1);
     }
 
-    glutInitWindowPosition(0, 0); glutInitWindowSize( 300, 300);
+    glutInitWindowPosition(0, 0); 
+    glutInitWindowSize( 300, 300);
 
     type = GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH | GLUT_STENCIL;
     glutInitDisplayMode(type);
diff --git a/progs/util/shaderutil.c b/progs/util/shaderutil.c
index 4f17dd7efa..745851395a 100644
--- a/progs/util/shaderutil.c
+++ b/progs/util/shaderutil.c
@@ -80,6 +80,7 @@ CompileShaderFile(GLenum shaderType, const char *filename)
 
    FILE *f = fopen(filename, "r");
    if (!f) {
+      fprintf(stderr, "Unable to open shader file %s\n", filename);
       return 0;
    }
 
diff --git a/progs/vp/Makefile b/progs/vp/Makefile
index 28d63237a4..41d025c574 100644
--- a/progs/vp/Makefile
+++ b/progs/vp/Makefile
@@ -26,13 +26,13 @@ INCLUDES = -I. -I$(TOP)/include -I../samples
 .SUFFIXES: .c
 
 .c:
-	$(CC) $(INCLUDES) $(CFLAGS) $(LDFLAGS) $< $(LIBS) -o $@
+	$(APP_CC) $(INCLUDES) $(CFLAGS) $(LDFLAGS) $< $(LIBS) -o $@
 
 .c.o:
-	$(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
+	$(APP_CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
 
 .S.o:
-	$(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES)  $< -o $@
+	$(APP_CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES)  $< -o $@
 
 
 ##### TARGETS #####
diff --git a/progs/vp/exp.txt b/progs/vp/exp.txt
index 601aae7d71..53ce71db96 100644
--- a/progs/vp/exp.txt
+++ b/progs/vp/exp.txt
@@ -1,5 +1,6 @@
-!!VP1.0
-EXP R0, v[COL0].x; 
-ADD o[COL0], R0.z, -R0.w;
-MOV o[HPOS], v[OPOS];
+!!ARBvp1.0
+TEMP R0;
+EXP R0, vertex.color.x;
+SUB result.color, R0.z, R0.w;
+MOV result.position, vertex.position;
 END
diff --git a/progs/vp/log.txt b/progs/vp/log.txt
index 9b04268433..6b4e94ed0e 100644
--- a/progs/vp/log.txt
+++ b/progs/vp/log.txt
@@ -1,6 +1,7 @@
-!!VP1.0
-ADD R0, v[COL0], v[COL0];
+!!ARBvp1.0
+TEMP R0;
+ADD R0, vertex.color, vertex.color;
 ADD R0, R0, R0;
-LOG o[COL0], R0.x; 
-MOV o[HPOS], v[OPOS];
+LOG result.color, R0.x; 
+MOV result.position, vertex.position;
 END
diff --git a/progs/vp/vp-tris.c b/progs/vp/vp-tris.c
index 58014dd48d..e1ddb2e14d 100644
--- a/progs/vp/vp-tris.c
+++ b/progs/vp/vp-tris.c
@@ -5,7 +5,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
-#include <GL/glut.h>
 
 #ifndef WIN32
 #include <unistd.h>
@@ -15,6 +14,8 @@
 #include <GL/glext.h>
 #endif
 
+#include <GL/glut.h>
+
 #ifdef WIN32
 static PFNGLBINDPROGRAMARBPROC glBindProgramARB = NULL;
 static PFNGLGENPROGRAMSARBPROC glGenProgramsARB = NULL;
diff --git a/progs/xdemos/glxgears.c b/progs/xdemos/glxgears.c
index c98c3157b5..8db717f1aa 100644
--- a/progs/xdemos/glxgears.c
+++ b/progs/xdemos/glxgears.c
@@ -419,6 +419,52 @@ init(void)
 }
 
 
+/**
+ * Remove window border/decorations.
+ */
+static void
+no_border( Display *dpy, Window w)
+{
+   static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
+   static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
+
+   typedef struct
+   {
+      unsigned long       flags;
+      unsigned long       functions;
+      unsigned long       decorations;
+      long                inputMode;
+      unsigned long       status;
+   } PropMotifWmHints;
+
+   PropMotifWmHints motif_hints;
+   Atom prop, proptype;
+   unsigned long flags = 0;
+
+   /* setup the property */
+   motif_hints.flags = MWM_HINTS_DECORATIONS;
+   motif_hints.decorations = flags;
+
+   /* get the atom for the property */
+   prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
+   if (!prop) {
+      /* something went wrong! */
+      return;
+   }
+
+   /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
+   proptype = prop;
+
+   XChangeProperty( dpy, w,                         /* display, window */
+                    prop, proptype,                 /* property, type */
+                    32,                             /* format: 32-bit datums */
+                    PropModeReplace,                /* mode */
+                    (unsigned char *) &motif_hints, /* data */
+                    PROP_MOTIF_WM_HINTS_ELEMENTS    /* nelements */
+                  );
+}
+
+
 /*
  * Create an RGB, double-buffered window.
  * Return the window and context handles.
@@ -479,13 +525,15 @@ make_window( Display *dpy, const char *name,
    attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
    attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
    /* XXX this is a bad way to get a borderless window! */
-   attr.override_redirect = fullscreen;
-   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
 
    win = XCreateWindow( dpy, root, x, y, width, height,
 		        0, visinfo->depth, InputOutput,
 		        visinfo->visual, mask, &attr );
 
+   if (fullscreen)
+      no_border(dpy, win);
+
    /* set hints and properties */
    {
       XSizeHints sizehints;
diff --git a/progs/xdemos/glxswapcontrol.c b/progs/xdemos/glxswapcontrol.c
index e429d58ecc..2c51801989 100644
--- a/progs/xdemos/glxswapcontrol.c
+++ b/progs/xdemos/glxswapcontrol.c
@@ -121,7 +121,7 @@ static char ** extension_table = NULL;
 static unsigned num_extensions;
 
 static GLboolean use_ztrick = GL_FALSE;
-static GLfloat   aspect;
+static GLfloat aspectX = 1.0f, aspectY = 1.0f;
 
 /*
  *
@@ -313,13 +313,13 @@ draw(void)
 
       glMatrixMode(GL_PROJECTION);
       glLoadIdentity();
-      glFrustum(-1.0, 1.0, -aspect, aspect, 5.0, 60.0);
+      glFrustum(-aspectX, aspectX, -aspectY, aspectY, 5.0, 60.0);
 
       glEnable(GL_LIGHTING);
 
       glMatrixMode(GL_MODELVIEW);
       glLoadIdentity();
-      glTranslatef(0.0, 0.0, -40.0);
+      glTranslatef(0.0, 0.0, -45.0);
    }
    else {
       glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -356,17 +356,23 @@ draw(void)
 static void
 reshape(int width, int height)
 {
-   aspect = (GLfloat) height / (GLfloat) width;
+   if (width > height) {
+      aspectX = (GLfloat) width / (GLfloat) height;
+      aspectY = 1.0;
+   }
+   else {
+      aspectX = 1.0;
+      aspectY = (GLfloat) height / (GLfloat) width;
+   }
 
-   
    glViewport(0, 0, (GLint) width, (GLint) height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
 
-   glFrustum(-1.0, 1.0, -aspect, aspect, 5.0, 60.0);
+   glFrustum(-aspectX, aspectX, -aspectY, aspectY, 5.0, 60.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
-   glTranslatef(0.0, 0.0, -40.0);
+   glTranslatef(0.0, 0.0, -45.0);
 }
 
 
@@ -407,13 +413,59 @@ init(void)
 }
 
 
+/**
+ * Remove window border/decorations.
+ */
+static void
+no_border( Display *dpy, Window w)
+{
+   static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
+   static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
+
+   typedef struct
+   {
+      unsigned long       flags;
+      unsigned long       functions;
+      unsigned long       decorations;
+      long                inputMode;
+      unsigned long       status;
+   } PropMotifWmHints;
+
+   PropMotifWmHints motif_hints;
+   Atom prop, proptype;
+   unsigned long flags = 0;
+
+   /* setup the property */
+   motif_hints.flags = MWM_HINTS_DECORATIONS;
+   motif_hints.decorations = flags;
+
+   /* get the atom for the property */
+   prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
+   if (!prop) {
+      /* something went wrong! */
+      return;
+   }
+
+   /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
+   proptype = prop;
+
+   XChangeProperty( dpy, w,                         /* display, window */
+                    prop, proptype,                 /* property, type */
+                    32,                             /* format: 32-bit datums */
+                    PropModeReplace,                /* mode */
+                    (unsigned char *) &motif_hints, /* data */
+                    PROP_MOTIF_WM_HINTS_ELEMENTS    /* nelements */
+                  );
+}
+
+
 /*
  * Create an RGB, double-buffered window.
  * Return the window and context handles.
  */
 static void
 make_window( Display *dpy, const char *name,
-             int x, int y, int width, int height,
+             int x, int y, int width, int height, GLboolean fullscreen,
              Window *winRet, GLXContext *ctxRet)
 {
    int attrib[] = { GLX_RGBA,
@@ -434,6 +486,12 @@ make_window( Display *dpy, const char *name,
    scrnum = DefaultScreen( dpy );
    root = RootWindow( dpy, scrnum );
 
+   if (fullscreen) {
+      x = y = 0;
+      width = DisplayWidth( dpy, scrnum );
+      height = DisplayHeight( dpy, scrnum );
+   }
+
    visinfo = glXChooseVisual( dpy, scrnum, attrib );
    if (!visinfo) {
       printf("Error: couldn't get an RGB, Double-buffered visual\n");
@@ -464,6 +522,9 @@ make_window( Display *dpy, const char *name,
                               None, (char **)NULL, 0, &sizehints);
    }
 
+   if (fullscreen)
+      no_border(dpy, win);
+
    ctx = glXCreateContext( dpy, visinfo, NULL, True );
    if (!ctx) {
       printf("Error: glXCreateContext failed\n");
@@ -572,7 +633,6 @@ event_loop(Display *dpy, Window win)
  * Display the refresh rate of the display using the GLX_OML_sync_control
  * extension.
  */
-
 static void
 show_refresh_rate( Display * dpy )
 {
@@ -599,7 +659,6 @@ show_refresh_rate( Display * dpy )
  * \param string   String of GLX extensions.
  * \sa is_extension_supported
  */
-
 static void
 make_extension_table( const char * string )
 {
@@ -679,7 +738,6 @@ make_extension_table( const char * string )
  * \return GL_TRUE of the extension is supported, GL_FALSE otherwise.
  * \sa make_extension_table
  */
-
 static GLboolean
 is_extension_supported( const char * ext )
 {
@@ -705,11 +763,12 @@ main(int argc, char *argv[])
    int swap_interval = 1;
    GLboolean do_swap_interval = GL_FALSE;
    GLboolean force_get_rate = GL_FALSE;
+   GLboolean fullscreen = GL_FALSE;
    GLboolean printInfo = GL_FALSE;
    int i;
    PFNGLXSWAPINTERVALMESAPROC set_swap_interval = NULL;
    PFNGLXGETSWAPINTERVALMESAPROC get_swap_interval = NULL;
-
+   int width = 300, height = 300;
 
    for (i = 1; i < argc; i++) {
       if (strcmp(argv[i], "-display") == 0 && i + 1 < argc) {
@@ -731,6 +790,9 @@ main(int argc, char *argv[])
 	  */
 	 force_get_rate = GL_TRUE;
       }
+      else if (strcmp(argv[i], "-fullscreen") == 0) {
+         fullscreen = GL_TRUE;
+      }
       else if (strcmp(argv[i], "-ztrick") == 0) {
 	 use_ztrick = GL_TRUE;
       }
@@ -743,6 +805,7 @@ main(int argc, char *argv[])
          printf("  -info                   Display GL information\n");
          printf("  -swap N                 Swap no more than once per N vertical refreshes\n");
          printf("  -forcegetrate           Try to use glXGetMscRateOML function\n");
+         printf("  -fullscreen             Full-screen window\n");
          return 0;
       }
    }
@@ -753,7 +816,7 @@ main(int argc, char *argv[])
       return -1;
    }
 
-   make_window(dpy, "glxgears", 0, 0, 300, 300, &win, &ctx);
+   make_window(dpy, "glxgears", 0, 0, width, height, fullscreen, &win, &ctx);
    XMapWindow(dpy, win);
    glXMakeCurrent(dpy, win, ctx);
 
@@ -817,7 +880,7 @@ main(int argc, char *argv[])
    /* Set initial projection/viewing transformation.
     * same as glxgears.c
     */
-   reshape(300, 300);
+   reshape(width, height);
 
    event_loop(dpy, win);