DtDrawFBOCallback.h

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/******************************************************************************
** Copyright (c) 2016 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <osg/Camera>
#include <osg/FrameBufferObject>

namespace osg
{
   class RenderInfo;
}

namespace makVrv
{
   struct PreDrawFBOCallback : public osg::Camera::DrawCallback
   {
      PreDrawFBOCallback( osg::FrameBufferObject* fbo);

      virtual void operator () (osg::RenderInfo& renderInfo) const;

      void enableBindFbo(bool bind);

   private:
      osg::ref_ptr<osg::FrameBufferObject> mySharedFbo;
      bool myEnableBindFbo;
   };


   struct PostDrawFBOCallback : public osg::Camera::DrawCallback
   {
      PostDrawFBOCallback();

      virtual void operator () (osg::RenderInfo& renderInfo) const;

      void setRestoreDrawBuffer(GLenum bufferAttachment);

      void setRestoreReadBuffer(GLenum bufferAttachment);

      void enableUnbindFbo(bool unbind);
   private:
      GLenum myDrawBufferAttachment;
      GLenum myReadBufferAttachment;
      bool myEnableUnbindFbo;
   };

}