# OgreShaderExIntegratedPSSM3.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004 (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2009 Torus Knot Software Ltd
    00008
    00009 Permission is hereby granted, free of charge, to any person obtaining a copy
    00010 of this software and associated documentation files (the "Software"), to deal
    00011 in the Software without restriction, including without limitation the rights
    00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00013 copies of the Software, and to permit persons to whom the Software is
    00014 furnished to do so, subject to the following conditions:
    00015
    00016 The above copyright notice and this permission notice shall be included in
    00017 all copies or substantial portions of the Software.
    00018
    00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00025 THE SOFTWARE.
    00026 -----------------------------------------------------------------------------
    00027 */
    00028 #ifndef _ShaderExIntegratedPSSM3_
    00029 #define _ShaderExIntegratedPSSM3_
    00030
    00031 #include "OgreShaderPrerequisites.h"
    00032 #ifdef RTSHADER_SYSTEM_BUILD_EXT_SHADERS
    00033 #include "OgreVector4.h"
    00034 #include "OgreLight.h"
    00035 #include "OgreCommon.h"
    00036 #include "OgreShaderSubRenderState.h"
    00037 #include "OgreShaderParameter.h"
    00038
    00039 namespace Ogre {
    00040 namespace RTShader {
    00041
    00052 class _OgreRTSSExport IntegratedPSSM3 : public SubRenderState
    00053 {
    00054
    00055     // Interface.
    00056 public:
    00057     typedef std::vector<Real> SplitPointList;
    00058
    00060     IntegratedPSSM3();
    00061
    00065     virtual const String&   getType                 () const;
    00066
    00070     virtual int             getExecutionOrder       () const;
    00071
    00075     virtual void            updateGpuProgramsParams (Renderable* rend, Pass* pass, const AutoParamDataSource* source, const LightList* pLightList);
    00076
    00080     virtual void            copyFrom                (const SubRenderState& rhs);
    00081
    00082
    00086     virtual bool            preAddToRenderState     (RenderState* renderState, Pass* srcPass, Pass* dstPass);
    00087
    00088
    00089
    00096     void            setSplitPoints                  (const SplitPointList& newSplitPoints);
    00097
    00098     static String Type;
    00099
    00100     // Protected types:
    00101 protected:
    00102
    00103     // Shadow texture parameters.
    00104     struct _OgreRTSSExport ShadowTextureParams
    00105     {
    00106         Real                mMaxRange;              // The max range of this shadow texture in terms of PSSM (far plane of viewing camera).
    00107         unsigned int        mTextureSamplerIndex;   // The shadow map sampler index.
    00108         UniformParameterPtr mTextureSampler;        // The shadow map sampler.
    00109         UniformParameterPtr mInvTextureSize;        // The inverse texture
    00110         UniformParameterPtr mWorldViewProjMatrix;   // The source light view projection matrix combined with world matrix.
    00111         ParameterPtr        mVSOutLightPosition;    // The vertex shader output position in light space.
    00112         ParameterPtr        mPSInLightPosition;     // The pixel shader input position in light space.
    00113
    00114     };
    00115
    00116     typedef std::vector<ShadowTextureParams>            ShadowTextureParamsList;
    00117     typedef ShadowTextureParamsList::iterator           ShadowTextureParamsIterator;
    00118     typedef ShadowTextureParamsList::const_iterator     ShadowTextureParamsConstIterator;
    00119
    00120     // Protected methods
    00121 protected:
    00122
    00123
    00124
    00128     virtual bool            resolveParameters       (ProgramSet* programSet);
    00129
    00133     virtual bool            resolveDependencies     (ProgramSet* programSet);
    00134
    00138     virtual bool            addFunctionInvocations  (ProgramSet* programSet);
    00139
    00143     bool            addVSInvocation                     (Function* vsMain, const int groupOrder, int& internalCounter);
    00144
    00148     bool            addPSInvocation                     (Program* psProgram, const int groupOrder, int& internalCounter);
    00149
    00150
    00151
    00152
    00153
    00154     // Attributes.
    00155 protected:
    00156     ShadowTextureParamsList     mShadowTextureParamsList;       // Shadow texture parameter list.
    00157     UniformParameterPtr         mPSSplitPoints;                 // Split points parameter.
    00158     ParameterPtr                mVSInPos;                       // Vertex shader input position parameter.
    00159     ParameterPtr                mVSOutPos;                      // Vertex shader output position (clip space) parameter.
    00160     ParameterPtr                mVSOutDepth;                    // Vertex shader output depth (clip space) parameter.
    00161     ParameterPtr                mPSInDepth;                     // Pixel shader input depth (clip space) parameter.
    00162     ParameterPtr                mPSLocalShadowFactor;           // Pixel shader local computed shadow colour parameter.
    00163     ParameterPtr                mPSDiffuse;                     // Pixel shader in/local diffuse colour parameter.
    00164     ParameterPtr                mPSOutDiffuse;                  // Pixel shader output diffuse colour parameter.
    00165     ParameterPtr                mPSSpecualr;                    // Pixel shader in/local specular colour parameter.
    00166     UniformParameterPtr         mPSDerivedSceneColour;          // Derived scene colour (ambient term).
    00167
    00168 };
    00169
    00170
    00175 class _OgreRTSSExport IntegratedPSSM3Factory : public SubRenderStateFactory
    00176 {
    00177 public:
    00178
    00182     virtual const String&   getType             () const;
    00183
    00187     virtual SubRenderState* createInstance      (ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass);
    00188
    00189
    00190 protected:
    00191
    00195     virtual SubRenderState* createInstanceImpl  ();
    00196
    00197
    00198 };
    00199
    00203 }
    00204 }
    00205
    00206 #endif
    00207 #endif
    00208

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Wed Nov 3 2010 19:24:52