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) 2000-2012 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 00049 #define SGX_LIB_INTEGRATEDPSSM "SGXLib_IntegratedPSSM" 00050 #define SGX_FUNC_COMPUTE_SHADOW_COLOUR3 "SGX_ComputeShadowFactor_PSSM3" 00051 #define SGX_FUNC_APPLYSHADOWFACTOR_DIFFUSE "SGX_ApplyShadowFactor_Diffuse" 00052 #define SGX_FUNC_MODULATE_SCALAR "SGX_ModulateScalar" 00053 00057 class _OgreRTSSExport IntegratedPSSM3 : public SubRenderState 00058 { 00059 00060 // Interface. 00061 public: 00062 typedef std::vector<Real> SplitPointList; 00063 00065 IntegratedPSSM3(); 00066 00070 virtual const String& getType() const; 00071 00075 virtual int getExecutionOrder() const; 00076 00080 virtual void updateGpuProgramsParams(Renderable* rend, Pass* pass, const AutoParamDataSource* source, const LightList* pLightList); 00081 00085 virtual void copyFrom(const SubRenderState& rhs); 00086 00087 00091 virtual bool preAddToRenderState(const RenderState* renderState, Pass* srcPass, Pass* dstPass); 00092 00093 00094 00101 void setSplitPoints(const SplitPointList& newSplitPoints); 00102 00103 static String Type; 00104 00105 // Protected types: 00106 protected: 00107 00108 // Shadow texture parameters. 00109 struct _OgreRTSSExport ShadowTextureParams 00110 { 00111 // The max range of this shadow texture in terms of PSSM (far plane of viewing camera). 00112 Real mMaxRange; 00113 // The shadow map sampler index. 00114 unsigned int mTextureSamplerIndex; 00115 // The shadow map sampler. 00116 UniformParameterPtr mTextureSampler; 00117 // The inverse texture 00118 UniformParameterPtr mInvTextureSize; 00119 // The source light view projection matrix combined with world matrix. 00120 UniformParameterPtr mWorldViewProjMatrix; 00121 // The vertex shader output position in light space. 00122 ParameterPtr mVSOutLightPosition; 00123 // The pixel shader input position in light space. 00124 ParameterPtr mPSInLightPosition; 00125 00126 }; 00127 00128 typedef std::vector<ShadowTextureParams> ShadowTextureParamsList; 00129 typedef ShadowTextureParamsList::iterator ShadowTextureParamsIterator; 00130 typedef ShadowTextureParamsList::const_iterator ShadowTextureParamsConstIterator; 00131 00132 // Protected methods 00133 protected: 00134 00135 00136 00140 virtual bool resolveParameters(ProgramSet* programSet); 00141 00145 virtual bool resolveDependencies(ProgramSet* programSet); 00146 00150 virtual bool addFunctionInvocations(ProgramSet* programSet); 00151 00155 bool addVSInvocation(Function* vsMain, const int groupOrder, int& internalCounter); 00156 00160 bool addPSInvocation(Program* psProgram, const int groupOrder, int& internalCounter); 00161 00162 00163 00164 00165 00166 // Attributes. 00167 protected: 00168 // Shadow texture parameter list. 00169 ShadowTextureParamsList mShadowTextureParamsList; 00170 // Split points parameter. 00171 UniformParameterPtr mPSSplitPoints; 00172 // Vertex shader input position parameter. 00173 ParameterPtr mVSInPos; 00174 // Vertex shader output position (clip space) parameter. 00175 ParameterPtr mVSOutPos; 00176 // Vertex shader output depth (clip space) parameter. 00177 ParameterPtr mVSOutDepth; 00178 // Pixel shader input depth (clip space) parameter. 00179 ParameterPtr mPSInDepth; 00180 // Pixel shader local computed shadow colour parameter. 00181 ParameterPtr mPSLocalShadowFactor; 00182 // Pixel shader in/local diffuse colour parameter. 00183 ParameterPtr mPSDiffuse; 00184 // Pixel shader output diffuse colour parameter. 00185 ParameterPtr mPSOutDiffuse; 00186 // Pixel shader in/local specular colour parameter. 00187 ParameterPtr mPSSpecualr; 00188 // Derived scene colour (ambient term). 00189 UniformParameterPtr mPSDerivedSceneColour; 00190 00191 }; 00192 00193 00198 class _OgreRTSSExport IntegratedPSSM3Factory : public SubRenderStateFactory 00199 { 00200 public: 00201 00205 virtual const String& getType() const; 00206 00210 virtual SubRenderState* createInstance(ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator); 00211 00212 00213 protected: 00214 00218 virtual SubRenderState* createInstanceImpl(); 00219 00220 00221 }; 00222 00226 } 00227 } 00228 00229 #endif 00230 #endif 00231
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:23