Addd OsgSceneHandler::s/getCleanUpOnNextFrame() and support for it in the draw() method,

when CleanUpOnNextFrame is enabled the next frame simple deleted OpenGL objects without doing any draw traversal.

include/osgProducer/OsgSceneHandler

@@ -76,8 +76,15 @@ class OSGPRODUCER_EXPORT OsgSceneHandler : public Producer::Camera::SceneHandler
         Callback* getCullCallback() { return _cullCallback.get(); }
         const Callback* getCullCallback() const { return _cullCallback.get(); }
 
-
         virtual void draw(Producer::Camera& camera)
+        {
+            if (_cleanUpOnNextFrame)
+            {
+                _sceneView->flushAllDeletedGLObjects();
+                _flushOfAllDeletedGLObjectsOnNextFrame = false;
+                _cleanUpOnNextFrame = false;
+            }
+            else
             {
                 if (_flushOfAllDeletedGLObjectsOnNextFrame && _sceneView.valid()) 
                 {
@@ -89,6 +96,7 @@ class OSGPRODUCER_EXPORT OsgSceneHandler : public Producer::Camera::SceneHandler
 
                 _flushOfAllDeletedGLObjectsOnNextFrame = false;
             }
+        }
         
         virtual void drawImplementation(Producer::Camera& camera);
 
@@ -102,6 +110,10 @@ class OSGPRODUCER_EXPORT OsgSceneHandler : public Producer::Camera::SceneHandler
         
         bool getFlushOfAllDeletedGLObjectsOnNextFrame() const { return _flushOfAllDeletedGLObjectsOnNextFrame; }
 
+        void setCleanUpOnNextFrame(bool flag) { _cleanUpOnNextFrame = flag; }
+        
+        bool getCleanUpOnNextFrame() const { return _cleanUpOnNextFrame; }
+
     protected:
     
         virtual ~OsgSceneHandler() {}
@@ -117,6 +129,7 @@ class OSGPRODUCER_EXPORT OsgSceneHandler : public Producer::Camera::SceneHandler
         osg::Timer_t           _previousFrameStartTick;
         
         bool                   _flushOfAllDeletedGLObjectsOnNextFrame;
+        bool                   _cleanUpOnNextFrame;
 };
 
 }

src/osgProducer/OsgCameraGroup.cpp

@@ -736,7 +736,7 @@ void OsgCameraGroup::cleanup_frame()
         ++itr)
     {
         (*itr)->getSceneView()->releaseAllGLObjects();
-        (*itr)->setFlushOfAllDeletedGLObjectsOnNextFrame(true);
+        (*itr)->setCleanUpOnNextFrame(true);
     }
     
     // make sure that the registry all flushes all its texture objects.

src/osgProducer/OsgSceneHandler.cpp

@@ -26,6 +26,7 @@ OsgSceneHandler::OsgSceneHandler( osg::DisplaySettings *ds) :
     _frameStartTick = 0;
     _previousFrameStartTick = 0;
     _flushOfAllDeletedGLObjectsOnNextFrame = false;
+    _cleanUpOnNextFrame = false;
 }
 
 void OsgSceneHandler::init()

src/osgWrappers/osgProducer/OsgSceneHandler.cpp

@@ -45,6 +45,9 @@ BEGIN_OBJECT_REFLECTOR(osgProducer::OsgSceneHandler)
 	I_Method1(void, setContextID, IN, int, id);
 	I_Method1(void, setFlushOfAllDeletedGLObjectsOnNextFrame, IN, bool, flag);
 	I_Method0(bool, getFlushOfAllDeletedGLObjectsOnNextFrame);
+	I_Method1(void, setCleanUpOnNextFrame, IN, bool, flag);
+	I_Method0(bool, getCleanUpOnNextFrame);
+	I_Property(bool, CleanUpOnNextFrame);
 	I_Property(osgProducer::OsgSceneHandler::Callback *, ClearCallback);
 	I_WriteOnlyProperty(int, ContextID);
 	I_Property(osgProducer::OsgSceneHandler::Callback *, CullCallback);