From 7ba59d8729bda1ae9a715987c8f9362d7edee446 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <korli@users.berlios.de>
Date: Tue, 26 May 2009 20:38:10 +0000
Subject: [PATCH] don't try to allocate an empty BBitmap

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30869 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../opengl/mesa_software_renderer/MesaSoftwareRenderer.cpp     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/add-ons/opengl/mesa_software_renderer/MesaSoftwareRenderer.cpp b/src/add-ons/opengl/mesa_software_renderer/MesaSoftwareRenderer.cpp
index eeae5d274c..c68180626e 100644
--- a/src/add-ons/opengl/mesa_software_renderer/MesaSoftwareRenderer.cpp
+++ b/src/add-ons/opengl/mesa_software_renderer/MesaSoftwareRenderer.cpp
@@ -605,6 +605,9 @@ MesaSoftwareRenderer::_AllocateBitmap()
 {
 	// allocate new size of back buffer bitmap
 	delete fBitmap;
+	fBitmap = NULL;
+	if (fWidth < 1 || fHeight < 1)
+		return;
 	BRect rect(0.0, 0.0, fWidth - 1, fHeight - 1);
 	fBitmap = new BBitmap(rect, fColorSpace);
 	for (uint i = 0; i < fHeight; i++) {