#pragma once

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

#include "ConvolvedCubeMapRenderTechnique.h"
#include "OgreCubeMapRenderTechnique.h"
#include "Ogre.h"

using namespace Ogre;

/**
	@brief ConvolvedCubeMapRenderTechnique used in an Ogre environment.
*/
class OgreConvolvedCubeMapRenderTechnique :	public ConvolvedCubeMapRenderTechnique,
											public OgreCubeMapRenderTechnique
{
public:

	/**
		@brief Constructor.

		@param startFrame					adds an offset to the current frame number to help evenly distribute updates between frames
		@param cubeMapUpdateInterval		update frequency
		@param cubeMapResolution			color cubemap resolution
		@param reducedCubeMapResolution		reduced sized color cubemap resolution
		@param reducedTexID					the id of the texture unit state the resulting cubemap should be bound to
		@param useDistCalc					flag to skip cube face update if object is far away
		@param useFaceAngleCalc				flag to skip cube face update if face is neglible
		@param distTolerance				distance tolerance used in face skip
		@param angleTolerance				angle tolerance used in face skip
		@param updateAllFace				defines if all cubemap faces should be updated in a frame or only one face per frame
		@param renderSelf				sets if the object should be rendered to the cube map
		@param renderEnvironment		sets if the environment should be rendered to the cube map
		@param selfMaterial				the material that should be set for the object while rendering the cubemap
		@param environmentMaterial      the material that should be set for the environment while rendering the cubemap
		@param getMinMax				sets if the minimum and maximum values of the cubemap should be computed
		@param attachToTexUnit			sets if this cubemap should be attach to a texture unit of the pass
		@param minVariableName			sets the name of the gpu shader program parameter to which the minimum value should be bound to
		@param maxVariableName			sets the name of the gpu shader program parameter to which the maximum value 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
	*/
	OgreConvolvedCubeMapRenderTechnique( unsigned long startFrame,
							unsigned long cubeMapUpdateInterval,
							unsigned int cubeMapResolution,
							unsigned int reducedCubeMapResolution,
							unsigned char texID,
							bool useDistCalc,
							bool useFaceAngleCalc,
							float distTolerance,
							float angleTolerance,
							bool updateAllFace,
							bool renderSelf,
							bool renderEnvironment,
							String selfMaterial,
							String environmentMaterial,
							bool getMinMax,
							bool attachToTexUnit,
							String minVariableName,
							String maxVariableName,
							String triggerName,														
							Pass* pass,
							OgreRenderable* parentRenderable,
							OgreTechniqueGroup* parentTechniqueGroup
							);
	/**
		@brief Destructor.
	*/
	virtual ~OgreConvolvedCubeMapRenderTechnique();
	
	//inherited
	void update(unsigned long frameNum);
	
protected:	
	
	//inherited
	void reducedCubeMapRunChanged(RenderingRun* run);
	//inherited
	void colorCubeMapRunChanged(RenderingRun* run);
	//inherited
	RenderingRun* createReducedCubeMapRun();
	
};

/**
	@brief RenderTechniqueFactory to create OgreConvoledCubeMapRenderTechnique instances.
*/
class OgreConvoledCubeMapRenderTechniqueFactory : public OgreCubeMapRenderTechniqueFactory
{
public:
	
	OgreConvoledCubeMapRenderTechniqueFactory();

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


	unsigned int reducedCubeMapResolution;
};