OgreShaderFFPTexturing.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 Permission is hereby granted, free of charge, to any person obtaining a copy
00009 of this software and associated documentation files (the "Software"), to deal
00010 in the Software without restriction, including without limitation the rights
00011 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00012 copies of the Software, and to permit persons to whom the Software is
00013 furnished to do so, subject to the following conditions:
00014 
00015 The above copyright notice and this permission notice shall be included in
00016 all copies or substantial portions of the Software.
00017 
00018 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00019 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00020 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00021 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00022 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00023 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00024 THE SOFTWARE.
00025 -----------------------------------------------------------------------------
00026 */
00027 #ifndef _ShaderFFPTextureStage_
00028 #define _ShaderFFPTextureStage_
00029 
00030 #include "OgreShaderPrerequisites.h"
00031 #ifdef RTSHADER_SYSTEM_BUILD_CORE_SHADERS
00032 #include "OgreShaderSubRenderState.h"
00033 #include "OgreShaderParameter.h"
00034 #include "OgreRenderSystem.h"
00035 
00036 namespace Ogre {
00037 namespace RTShader {
00038 
00039 
00054 class _OgreRTSSExport FFPTexturing : public SubRenderState
00055 {
00056 
00057 // Interface.
00058 public:
00059 
00061     FFPTexturing();
00062 
00066     virtual const String& getType() const;
00067 
00071     virtual int getExecutionOrder() const;
00072 
00076     virtual void updateGpuProgramsParams(Renderable* rend, Pass* pass, const AutoParamDataSource* source, const LightList* pLightList);
00077 
00081     virtual void copyFrom(const SubRenderState& rhs);
00082 
00086     virtual bool preAddToRenderState(const RenderState* renderState, Pass* srcPass, Pass* dstPass);
00087 
00088     static String Type;
00089 
00090 // Protected types:
00091 protected:
00092 
00093     // Per texture unit parameters.
00094     struct _OgreRTSSExport TextureUnitParams
00095     {
00096         // Texture unit state.
00097         TextureUnitState* mTextureUnitState;
00098         // Texture projector.
00099         const Frustum* mTextureProjector;
00100         // Texture sampler index.
00101         unsigned short mTextureSamplerIndex;
00102         // Texture sampler index.
00103         GpuConstantType mTextureSamplerType;
00104         // Vertex shader input texture coordinate type.
00105         GpuConstantType mVSInTextureCoordinateType;
00106         // Vertex shader output texture coordinates type.       
00107         GpuConstantType mVSOutTextureCoordinateType;
00108         // Texture coordinates calculation method.
00109         TexCoordCalcMethod mTexCoordCalcMethod;
00110         // Texture matrix parameter.
00111         UniformParameterPtr mTextureMatrix;
00112         // Texture View Projection Image space matrix parameter.
00113         UniformParameterPtr mTextureViewProjImageMatrix;
00114         // Texture sampler parameter.
00115         UniformParameterPtr mTextureSampler;
00116         // Vertex shader input texture coordinates parameter.
00117         ParameterPtr mVSInputTexCoord;
00118         // Vertex shader output texture coordinates parameter.
00119         ParameterPtr mVSOutputTexCoord;
00120         // Pixel shader input texture coordinates parameter.
00121         ParameterPtr mPSInputTexCoord;
00122     };
00123 
00124     typedef vector<TextureUnitParams>::type         TextureUnitParamsList;
00125     typedef TextureUnitParamsList::iterator         TextureUnitParamsIterator;
00126     typedef TextureUnitParamsList::const_iterator   TextureUnitParamsConstIterator;
00127 
00128 // Protected methods
00129 protected:
00130 
00135     void setTextureUnitCount(size_t count);
00136 
00140     size_t getTextureUnitCount() const { return mTextureUnitParamsList.size(); }
00141 
00147     void setTextureUnit(unsigned short index, TextureUnitState* textureUnitState);
00148 
00152     virtual bool resolveParameters(ProgramSet* programSet);
00153 
00157     bool resolveUniformParams(TextureUnitParams* textureUnitParams, ProgramSet* programSet);
00158 
00162     bool resolveFunctionsParams(TextureUnitParams* textureUnitParams, ProgramSet* programSet);
00163 
00167     virtual bool resolveDependencies(ProgramSet* programSet);
00168 
00172     virtual bool addFunctionInvocations(ProgramSet* programSet);
00173 
00174 
00178     bool addVSFunctionInvocations(TextureUnitParams* textureUnitParams, Function* vsMain);
00179 
00183     bool addPSFunctionInvocations(TextureUnitParams* textureUnitParams, Function* psMain, int& internalCounter);
00184 
00188     virtual void addPSSampleTexelInvocation(TextureUnitParams* textureUnitParams, Function* psMain, 
00189         const ParameterPtr& texel, int groupOrder, int& internalCounter);
00190 
00191     virtual void addPSArgumentInvocations(Function* psMain, ParameterPtr arg, ParameterPtr texel,
00192                 int samplerIndex, LayerBlendSource blendSrc, const ColourValue& colourValue, Real alphaValue,
00193                  bool isAlphaArgument, const int groupOrder, int& internalCounter);
00194 
00195     virtual void addPSBlendInvocations(Function* psMain, ParameterPtr arg1, ParameterPtr arg2,
00196                 ParameterPtr texel,int samplerIndex, const LayerBlendModeEx& blendMode,
00197                 const int groupOrder, int& internalCounter, int targetChannels);
00198     
00202     TexCoordCalcMethod getTexCalcMethod(TextureUnitState* textureUnitState);
00203 
00207     bool needsTextureMatrix(TextureUnitState* textureUnitState);
00208 
00212     virtual bool isProcessingNeeded(TextureUnitState* texUnitState);
00213 
00214 
00215 // Attributes.
00216 protected:
00217     // Texture units list.      
00218     TextureUnitParamsList mTextureUnitParamsList;
00219     // World matrix parameter.
00220     UniformParameterPtr mWorldMatrix;
00221     // World inverse transpose matrix parameter.
00222     UniformParameterPtr mWorldITMatrix;
00223     // View matrix parameter.           
00224     UniformParameterPtr mViewMatrix;
00225     // Vertex shader input normal parameter.
00226     ParameterPtr mVSInputNormal;
00227     // Vertex shader input position parameter.      
00228     ParameterPtr mVSInputPos;
00229     // Pixel shader output colour.
00230     ParameterPtr mPSOutDiffuse;
00231     // Pixel shader diffuse colour.
00232     ParameterPtr mPSDiffuse;
00233     // Pixel shader specular colour.
00234     ParameterPtr mPSSpecular;
00235 };
00236 
00237 
00242 class _OgreRTSSExport FFPTexturingFactory : public SubRenderStateFactory
00243 {
00244 public:
00245 
00249     virtual const String& getType() const;
00250 
00254     virtual SubRenderState* createInstance(ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator);
00255 
00259     virtual void writeInstance(MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass);
00260 
00261     
00262 protected:
00263 
00267     virtual SubRenderState* createInstanceImpl();
00268 
00269 
00270 };
00271 
00276 }
00277 }
00278 
00279 #endif
00280 #endif
00281 

Copyright © 2012 Torus Knot Software Ltd
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:23