xpsm.h

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#ifndef KGE_XPSM_H
#define KGE_XPSM_H

#include "ShadowMapProjection.h"

namespace kge
{
        namespace efx
        {
                class KGE_API XPSM: public ShadowMapProjection
                {
                public:
                        XPSM(int ShadowMapSize, sn::SceneManager* pSmgr);

                        ~XPSM();

                        virtual bool Init();

                        void PreRender(float elapsedTime = 0.0f);

                        void Render();

                        void PostRenderEverything();

                        //various bias values
                        float m_XPSM_Coef;
                        float m_XPSM_Bias;
                        float m_XPSM_ZBias;
                        float m_XPSM_EpsilonW;

                protected:

                        float m_fAspect, m_zNear, m_zFar, m_ppNear, m_ppFar, m_fSlideBack, m_fLSPSM_Nopt, m_fCosGamma;

                        math::Matrix m_LightViewProj;

                        void BuildXPSMProjectionMatrix();

                        void TransformWithWClip(
                                const std::vector<gfx::Vertex3>& inVectors, 
                                std::vector<gfx::Vertex3>&       outVectors,
                                const math::Matrix&               transform,
                                float wThreshold);

                        bool IntersectAABB2D(
                                math::AABB& c, 
                                const math::AABB& a, 
                                const math::AABB& b);


                }; // XPSM

        } // efx

} // kge

#endif //  KGE_XPSM_H