Fixed for crashes on exit associaciated with VAO usage and vairous niche usage cases

include/osg/Object

@@ -25,7 +25,6 @@
 namespace osg {
 
 // forward declare
-class State;
 class UserDataContainer;
 class Node;
 class NodeVisitor;

include/osg/Referenced

@@ -30,6 +30,7 @@ namespace osg {
 class DeleteHandler;
 class Observer;
 class ObserverSet;
+class State;
 
 /** template class to help enforce static initialization order. */
 template <typename T, T M()>
@@ -115,7 +116,15 @@ class OSG_EXPORT Referenced
         /** Remove Observer that is observing this object.*/
         void removeObserver(Observer* observer) const;
 
-    public:
+         /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int /*maxSize*/) {}
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const {}
+
+public:
 
         friend class DeleteHandler;
 

include/osg/View

@@ -161,6 +161,9 @@ class OSG_EXPORT View : public virtual osg::Object
 
         void updateSlaves();
 
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
     protected :
 
         virtual ~View();