OgreShaderExIntegratedPSSM3.h
Go to the documentation of this file.

    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