fix for mga depthbuffer resize

src/mesa/main/context.c

@@ -1,4 +1,4 @@
-/* $Id: context.c,v 1.4 1999/09/02 13:16:17 keithw Exp $ */
+/* $Id: context.c,v 1.5 1999/09/04 14:40:49 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1293,6 +1293,15 @@ GLcontext *gl_create_context( GLvisual *visual,
       ctx->Pixel.DriverReadBuffer = GL_FRONT_LEFT;
    }
 
+   
+   /* Fill in some driver defaults now.
+    */
+   ctx->Driver.AllocDepthBuffer = gl_alloc_depth_buffer;
+   ctx->Driver.ReadDepthSpanFloat = gl_read_depth_span_float;
+   ctx->Driver.ReadDepthSpanInt = gl_read_depth_span_int;
+
+   
+
 #ifdef PROFILE
    init_timings( ctx );
 #endif
@@ -2173,31 +2182,30 @@ void gl_update_state( GLcontext *ctx )
 	    }
 	 }
 
-	 /*
-	  * Update Device Driver interface
+	 /* The driver isn't managing the depth buffer.
 	  */
-	 ctx->Driver.AllocDepthBuffer = gl_alloc_depth_buffer;
-	 if (ctx->Depth.Mask) {
-	    switch (ctx->Depth.Func) {
-	    case GL_LESS:
-	       ctx->Driver.DepthTestSpan = gl_depth_test_span_less;
-	       ctx->Driver.DepthTestPixels = gl_depth_test_pixels_less;
-	       break;
-	    case GL_GREATER:
-	       ctx->Driver.DepthTestSpan = gl_depth_test_span_greater;
-	       ctx->Driver.DepthTestPixels = gl_depth_test_pixels_greater;
-	       break;
-	    default:
+	 if (ctx->Driver.AllocDepthBuffer == gl_alloc_depth_buffer) 
+	 {
+	    if (ctx->Depth.Mask) {
+	       switch (ctx->Depth.Func) {
+	       case GL_LESS:
+		  ctx->Driver.DepthTestSpan = gl_depth_test_span_less;
+		  ctx->Driver.DepthTestPixels = gl_depth_test_pixels_less;
+		  break;
+	       case GL_GREATER:
+		  ctx->Driver.DepthTestSpan = gl_depth_test_span_greater;
+		  ctx->Driver.DepthTestPixels = gl_depth_test_pixels_greater;
+		  break;
+	       default:
+		  ctx->Driver.DepthTestSpan = gl_depth_test_span_generic;
+		  ctx->Driver.DepthTestPixels = gl_depth_test_pixels_generic;
+	       }
+	    }
+	    else {
 	       ctx->Driver.DepthTestSpan = gl_depth_test_span_generic;
 	       ctx->Driver.DepthTestPixels = gl_depth_test_pixels_generic;
 	    }
 	 }
-	 else {
-	    ctx->Driver.DepthTestSpan = gl_depth_test_span_generic;
-	    ctx->Driver.DepthTestPixels = gl_depth_test_pixels_generic;
-	 }
-	 ctx->Driver.ReadDepthSpanFloat = gl_read_depth_span_float;
-	 ctx->Driver.ReadDepthSpanInt = gl_read_depth_span_int;
       }
 
       if (ctx->NewState & NEW_LIGHTING) {

src/mesa/main/dlist.c

@@ -1,4 +1,4 @@
-/* $Id: dlist.c,v 1.2 1999/08/26 14:50:49 keithw Exp $ */
+/* $Id: dlist.c,v 1.3 1999/09/04 14:40:49 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -271,6 +271,7 @@ union node {
 /* Number of nodes of storage needed for each instruction: */
 static GLuint InstSize[ OPCODE_END_OF_LIST+1 ];
 
+void mesa_print_display_list( GLuint list );
 
 
 /**********************************************************************/
@@ -2382,14 +2383,9 @@ void gl_compile_cassette( GLcontext *ctx )
       return;
    }
 
-   /* Do some easy optimizations of the cassette.  If current value of
-    * clip volume hint is GL_FASTEST, we are not clipping anyway, so
-    * don't calculate the bounds.  But - they will not be calculated
-    * later even if the hint is changed, so this is a slightly odd
-    * behaviour.
+   /* Do some easy optimizations of the cassette.  
     */
-   if (ctx->Hint.ClipVolumeClipping != GL_FASTEST &&
-       im->v.Obj.size < 4 && 
+   if (im->v.Obj.size < 4 && 
        im->Count > 15)
    {
       im->Bounds = (GLfloat (*)[3]) malloc(6 * sizeof(GLfloat));
@@ -3063,13 +3059,15 @@ void gl_EndList( GLcontext *ctx )
 
    (void) alloc_instruction( ctx, OPCODE_END_OF_LIST, 0 );
 
-
-
    /* Destroy old list, if any */
    gl_destroy_list(ctx, ctx->CurrentListNum);
    /* Install the list */
    HashInsert(ctx->Shared->DisplayList, ctx->CurrentListNum, ctx->CurrentListPtr);
 
+
+   if (MESA_VERBOSE & VERBOSE_DISPLAY_LIST)
+      mesa_print_display_list(ctx->CurrentListNum);
+
    ctx->CurrentListNum = 0;
    ctx->CurrentListPtr = NULL;
    ctx->ExecuteFlag = GL_TRUE;
@@ -3080,6 +3078,11 @@ void gl_EndList( GLcontext *ctx )
     */
    free( ctx->input );
    SET_IMMEDIATE( ctx, ctx->VB->IM );
+   gl_reset_input( ctx );
+
+   /* Haven't tracked down why this is needed.
+    */
+   ctx->NewState = ~0;
 
    ctx->API = ctx->Exec;   /* Switch the API function pointers */
 }