OgreShaderExHardwareSkinningTechnique.h

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/*
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This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org

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*/
#ifndef _ShaderExHardwareSkinningTechnique_
#define _ShaderExHardwareSkinningTechnique_

#include "OgreShaderPrerequisites.h"

#ifdef RTSHADER_SYSTEM_BUILD_EXT_SHADERS
#include "OgreShaderSubRenderState.h"
#include "OgreShaderParameter.h"
#include "OgreRenderSystem.h"
#include "OgreShaderFunctionAtom.h"

namespace Ogre {
namespace RTShader {

class HardwareSkinningFactory;

class _OgreRTSSExport HardwareSkinningTechnique : public RTShaderSystemAlloc
{
// Interface.
public:
    HardwareSkinningTechnique();

    virtual ~HardwareSkinningTechnique();

    virtual void copyFrom(const HardwareSkinningTechnique* hardSkin);

    void setHardwareSkinningParam(ushort boneCount, ushort weightCount, bool correctAntipodalityHandling = false, bool scalingShearingSupport = false);

    ushort getBoneCount();

    ushort getWeightCount();

    bool hasCorrectAntipodalityHandling();

    bool hasScalingShearingSupport();

    void setDoBoneCalculations(bool doBoneCalculations);

    virtual bool resolveParameters (ProgramSet* programSet) = 0;

    virtual bool resolveDependencies (ProgramSet* programSet) = 0;

    virtual bool addFunctionInvocations (ProgramSet* programSet) = 0;

protected:
    Operand::OpMask indexToMask (int index);

// Attributes.
protected:
    ushort mBoneCount;
    ushort mWeightCount;

    bool mCorrectAntipodalityHandling;
    bool mScalingShearingSupport;

    bool mDoBoneCalculations;
    
    ParameterPtr mParamInPosition;
    ParameterPtr mParamInNormal;
    ParameterPtr mParamInBiNormal;
    ParameterPtr mParamInTangent;
    ParameterPtr mParamInIndices;
    ParameterPtr mParamInWeights;
    UniformParameterPtr mParamInWorldMatrices;
    UniformParameterPtr mParamInInvWorldMatrix;
    UniformParameterPtr mParamInViewProjMatrix;
    UniformParameterPtr mParamInWorldMatrix;
    UniformParameterPtr mParamInWorldViewProjMatrix;

    ParameterPtr mParamTempFloat4;
    ParameterPtr mParamTempFloat3;
    ParameterPtr mParamLocalPositionWorld;
    ParameterPtr mParamLocalNormalWorld;
    ParameterPtr mParamLocalTangentWorld;
    ParameterPtr mParamLocalBinormalWorld;
    ParameterPtr mParamOutPositionProj;
};

}
}

#endif
#endif