Added scene stats support to osgProducer::ViewerEventHandler.

include/osgProducer/ViewerEventHandler

@@ -49,7 +49,8 @@ class OSGPRODUCER_EXPORT ViewerEventHandler : public osgGA::GUIEventHandler
         {
             NO_STATS = 0,
             FRAME_RATE = 1,
-            CAMERA_STATS = 2
+            CAMERA_STATS = 2,
+            SCENE_STATS = 3
         };
         
         void setFrameStatsMode(FrameStatsMode mode);

include/osgUtil/SceneView

@@ -455,6 +455,9 @@ class OSGUTIL_EXPORT SceneView : public osg::Referenced, public osg::CullSetting
         /** Flush deleted OpenGL objects, such as texture objects, display lists etc within specified available time.*/
         virtual void flushDeletedGLObjects(double& availableTime);
         
+        /** Extract stats for current draw list. */
+        bool getStats(Statistics* primStats); 
+
     protected:
 
         virtual ~SceneView();