From 3eae87854b5eff66e2c870eb3f5c8548ddb64cef Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 23 Jul 2007 16:42:25 +0000
Subject: [PATCH] Added FlushDeletedGLObjectsOperation.

---
 include/osg/GraphicsThread | 10 ++++++++++
 src/osg/GraphicsThread.cpp | 17 +++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/osg/GraphicsThread b/include/osg/GraphicsThread
index 2e3df3e3c..d202abf6a 100644
--- a/include/osg/GraphicsThread
+++ b/include/osg/GraphicsThread
@@ -96,6 +96,16 @@ struct OSG_EXPORT BlockAndFlushOperation : public GraphicsOperation, public Open
     virtual void operator () (GraphicsContext*);
 };
 
+
+struct OSG_EXPORT FlushDeletedGLObjectsOperation : public GraphicsOperation
+{
+    FlushDeletedGLObjectsOperation(double availableTime, bool keep=false);
+
+    virtual void operator () (GraphicsContext*);
+    
+    double _availableTime;
+};
+
 }
 
 #endif
diff --git a/src/osg/GraphicsThread.cpp b/src/osg/GraphicsThread.cpp
index 825b1e248..f32e6c87d 100644
--- a/src/osg/GraphicsThread.cpp
+++ b/src/osg/GraphicsThread.cpp
@@ -14,6 +14,7 @@
 
 #include <osg/GraphicsThread>
 #include <osg/GraphicsContext>
+#include <osg/GLObjects>
 #include <osg/Notify>
 
 using namespace osg;
@@ -110,3 +111,19 @@ void BlockAndFlushOperation::operator () (GraphicsContext*)
     glFlush();
     Block::release();
 }
+
+FlushDeletedGLObjectsOperation::FlushDeletedGLObjectsOperation(double availableTime, bool keep):
+    GraphicsOperation("FlushDeletedGLObjectsOperation",keep)
+{
+}
+
+void FlushDeletedGLObjectsOperation::operator () (GraphicsContext* context)
+{
+    State* state = context->getState();
+    unsigned int contextID = state ? state->getContextID() : 0;
+    const FrameStamp* frameStamp = state ? state->getFrameStamp() : 0;
+    double currentTime = frameStamp ? frameStamp->getReferenceTime() : 0.0;
+    double availableTime = _availableTime;
+
+    flushDeletedGLObjects(contextID, currentTime, availableTime);
+}