From c0b420a74a3ae2135cb660bc2f8b923418fb7b92 Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Fri, 20 Feb 2009 19:56:03 +0000
Subject: [PATCH] Fix crash when no texture is assigned

---
 panda/src/glstuff/glGraphicsBuffer_src.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/panda/src/glstuff/glGraphicsBuffer_src.cxx b/panda/src/glstuff/glGraphicsBuffer_src.cxx
index 077d810444..d00c5bfd4b 100644
--- a/panda/src/glstuff/glGraphicsBuffer_src.cxx
+++ b/panda/src/glstuff/glGraphicsBuffer_src.cxx
@@ -189,7 +189,10 @@ rebuild_bitplanes() {
   // Bind the FBO
 
   Texture *tex = get_texture(0);
-
+  if (tex == 0) {
+    return;
+  }
+  
   if (tex->get_texture_type() != Texture::TT_cube_map) {
     if (_fbo == 0) {
       glgsg->_glGenFramebuffers(1, &_fbo);