check for width or height = 0 before calling driver Bitmap func

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index c82abccc41ace331851fef84de889e5ad310bf2d..296dcf8f0bc99ba74aad002e6f5cbd0f93230d5d 100644 (file)
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -341,7 +341,7 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
    }
 
    if (ctx->RenderMode == GL_RENDER) {
-      if (bitmap) {
+      if (bitmap && width && height) {
          /* 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);