From 3bcfad833ce110caa036a2b13e41d8d7d523841f Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 17 Jun 2015 16:25:47 +0000
Subject: [PATCH] Fixed handling of use GLObjectsVisitor for modifying scene
 graph state without compiling to OpenGL so that the visitor can be run safely
 without a graphics context being current.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14921 16af8721-9629-0410-8352-f15c8da7e697
---
 src/osgUtil/GLObjectsVisitor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgUtil/GLObjectsVisitor.cpp b/src/osgUtil/GLObjectsVisitor.cpp
index 820d1a6be..dce01090e 100644
--- a/src/osgUtil/GLObjectsVisitor.cpp
+++ b/src/osgUtil/GLObjectsVisitor.cpp
@@ -42,7 +42,7 @@ void GLObjectsVisitor::apply(osg::Node& node)
 
     traverse(node);
 
-    bool programSetAfter = _renderInfo.getState()->getLastAppliedProgramObject()!=0;
+    bool programSetAfter = _renderInfo.getState()!=0 && _renderInfo.getState()->getLastAppliedProgramObject()!=0;
     if (programSetBefore && !programSetAfter)
     {
         osg::State* state = _renderInfo.getState();