#pragma once

//disable inheritance warning caused by multiple inheritance
#if _WIN32
#if _MSC_VER
#pragma warning(disable: 4250)
#endif
#endif

#include "OgreRenderTechnique.h"
#include "SBBRenderTechnique.h"
#include "Ogre.h"

using namespace Ogre;

/**
	@brief SBBRenderTechnique used in an OGRE environment.
*/
class OgreSBBRenderTechnique : public OgreRenderTechnique,
										public SBBRenderTechnique,
										public RenderTargetListener,
										public FrameListener,
										public UpdateListener
{
public:
	/**
		@brief Constructor.

		@param depthTexID				the id of the texture unit state the resulting
											scene depth map should be bound to
		@param pass						the pass to operate on			
		@param parentRenderable			the object to operate on
		@param parentTechniqueGroup		the TechniqueGroup this RenderedTechnique is attached to
	*/
	OgreSBBRenderTechnique(	unsigned char depthTexID,
							Pass* pass,
							OgreRenderable* parentRenderable,
							OgreTechniqueGroup* parentTechniqueGroup
							);
	~OgreSBBRenderTechnique();
	
	//inherited
	virtual void update(unsigned long frameNum);

	void  preRenderTargetUpdate (const RenderTargetEvent &evt);
	void  postRenderTargetUpdate (const RenderTargetEvent &evt);
	bool  frameEnded (const FrameEvent &evt);
	void preAllUpdates();
	void postAllUpdates();
	
protected:	
	/**
		&brief the id of the texture unit state the resulting scene depth map should be bound to
	*/
	unsigned char depthTexID;

	bool lastVisibility;
	
};


class OgreSBBRenderTechniqueFactory : public RenderTechniqueFactory
{
public:
	
	OgreSBBRenderTechniqueFactory();

	OgreRenderTechnique* createInstance(IllumTechniqueParams* params,
										Pass* pass,
										OgreRenderable* parentRenderable,
										OgreTechniqueGroup* parentTechniqueGroup);


	unsigned char depthTexID;

};