/*
This source file is part of Castor3D (http://castor3d.developpez.com/castor3d.htm)

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program 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 GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
the program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
*/
#ifndef ___C3DGL_TargetRenderer___
#define ___C3DGL_TargetRenderer___

#include "Module_GlRender.hpp"
#include "GlBuffer.hpp"
#include "GlFrameBuffer.hpp"

#include <Castor3D/RenderTarget.hpp>

namespace GlRender
{
	class GlTargetRenderer : public Castor3D::TargetRenderer, CuNonCopyable
	{
	private:
		typedef bool (GlTargetRenderer:: * BeginSceneFunction)();
		typedef BeginSceneFunction PBeginSceneFunction;
		typedef void (GlTargetRenderer:: * EndSceneFunction)();
		typedef EndSceneFunction PEndSceneFunction;

	protected:
		PBeginSceneFunction		m_pfnBeginScene;
		PEndSceneFunction		m_pfnEndScene;
		bool					m_bCleaned;
		OpenGl &				m_gl;

	public:
		GlTargetRenderer( OpenGl & p_gl, GlRenderSystem * p_pRenderSystem );
		virtual ~GlTargetRenderer();

		virtual bool Initialise			();
		virtual void Cleanup			();
		virtual void BeginScene			();
		virtual void EndScene			();

		virtual Castor3D::RenderBufferAttachmentSPtr	CreateAttachment	( Castor3D::RenderBufferSPtr p_pRenderBuffer )const;
		virtual Castor3D::TextureAttachmentSPtr			CreateAttachment	( Castor3D::DynamicTextureSPtr p_pTexture )const;
		virtual Castor3D::FrameBufferSPtr				CreateFrameBuffer	()const;

	private:
		bool DoBeginSceneGl2	();
		bool DoBeginSceneGl3	();
		bool DoBeginSceneFbo	();

		void DoUpdateSize		();

		void DoInitialise		();
		void DoEndScene			(){}
	};
}

#endif