From 19b05d5009f4b0e83118b351b7261bb914e33f2b Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Sat, 18 Mar 2006 21:46:17 +0000
Subject: Don't call Driver->Bitmap() if no image to render

---
 src/mesa/main/drawpix.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index 638679e845..6d855b5800 100644
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -2,7 +2,7 @@
  * Mesa 3-D graphics library
  * Version:  6.5
  *
- * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -363,10 +363,12 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
    }
 
    if (ctx->RenderMode == GL_RENDER) {
-      /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
-      GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
-      GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);
-      ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
+      if (bitmap) {
+         /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
+         GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
+         GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);
+         ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
+      }
    }
 #if _HAVE_FULL_GL
    else if (ctx->RenderMode == GL_FEEDBACK) {
-- 
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