Added GraphicsContextImplementation

include/osgProducer/GraphicsContextImplementation

@@ -0,0 +1,73 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSGPRODUCER_GRAPHICSCONTEXTIMPLEMENTATION
+#define OSGPRODUCER_GRAPHICSCONTEXTIMPLEMENTATION 1
+
+
+#include <osg/GraphicsContext>
+
+#include <Producer/RenderSurface>
+
+#include <osgProducer/Export>
+
+
+
+namespace osgProducer {
+
+class OSGPRODUCER_EXPORT GraphicsContextImplementation : public osg::GraphicsContext
+{
+    public :
+    
+        /** Construct a graphics context to specified traits.*/
+        GraphicsContextImplementation(Traits* traits);
+    
+        /** Construct a graphics context with specified RenderSurface.*/
+        GraphicsContextImplementation(Producer::RenderSurface* rs);
+
+        /** Return true of graphics context is realized.*/
+        bool isRealized() { return _rs.valid() && _rs->isRealized(); }
+
+        /** Return the RenderSurface that implements the graphics context.*/
+        Producer::RenderSurface* getRenderSurface() { return _rs.get(); }
+        
+        /** Return the const RenderSurface that implements the graphics context.*/
+        const Producer::RenderSurface* getRenderSurface() const { return _rs.get(); }
+
+
+        /** Release the graphics context.*/
+        virtual void release();
+
+        /** Make this graphics context current.*/
+        virtual void makeCurrent();
+
+        /** Make this graphics context current with specified read context.*/
+        virtual void makeContextCurrent(GraphicsContext* readContext);
+            
+        /** Bind the graphics context to associated texture.*/
+        virtual void bindPBufferToTexture(GLenum buffer);
+
+        /** swap the front and back buffers.*/
+        virtual void swapBuffers();
+
+
+    protected:
+    
+        virtual ~GraphicsContextImplementation();
+        
+        osg::ref_ptr<Producer::RenderSurface> _rs;
+};
+
+}
+
+#endif