OgreShaderFFPLighting.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) 2000-2012 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 _ShaderFFPLighting_
00028 #define _ShaderFFPLighting_
00029 
00030 #include "OgreShaderPrerequisites.h"
00031 #ifdef RTSHADER_SYSTEM_BUILD_CORE_SHADERS
00032 #include "OgreShaderParameter.h"
00033 #include "OgreShaderSubRenderState.h"
00034 #include "OgreVector4.h"
00035 #include "OgreLight.h"
00036 #include "OgreCommon.h"
00037 
00038 namespace Ogre {
00039 namespace RTShader {
00040 
00041 
00053 class _OgreRTSSExport FFPLighting : public SubRenderState
00054 {
00055 
00056 // Interface.
00057 public:
00058     
00060     FFPLighting();
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 
00085     virtual bool preAddToRenderState(const RenderState* renderState, Pass* srcPass, Pass* dstPass);
00086 
00087 
00088     static String Type;
00089 
00090 // Protected types:
00091 protected:
00092 
00093     // Per light parameters.
00094     struct _OgreRTSSExport LightParams
00095     {
00096         Light::LightTypes       mType;              // Light type.      
00097         // Light position.
00098         UniformParameterPtr mPosition;
00099         // Light direction.
00100         UniformParameterPtr mDirection;
00101         // Attenuation parameters.
00102         UniformParameterPtr mAttenuatParams;
00103         // Spot light parameters.
00104         UniformParameterPtr mSpotParams;
00105         // Diffuse colour.
00106         UniformParameterPtr mDiffuseColour;
00107         // Specular colour.
00108         UniformParameterPtr mSpecularColour;
00109 
00110     };
00111 
00112     typedef vector<LightParams>::type               LightParamsList;
00113     typedef LightParamsList::iterator               LightParamsIterator;
00114     typedef LightParamsList::const_iterator         LightParamsConstIterator;
00115 
00116 // Protected methods
00117 protected:
00123     void setTrackVertexColourType(TrackVertexColourType type) { mTrackVertexColourType = type; }
00124 
00128     TrackVertexColourType getTrackVertexColourType() const { return mTrackVertexColourType; }
00129 
00134     void setLightCount(const int lightCount[3]);
00135 
00140     void getLightCount(int lightCount[3]) const;
00141 
00147     void setSpecularEnable(bool enable) { mSpecularEnable = enable; }
00148 
00152     bool getSpecularEnable() const    { return mSpecularEnable; }
00153 
00157     virtual bool resolveParameters(ProgramSet* programSet);
00158 
00162     virtual bool resolveDependencies(ProgramSet* programSet);
00163 
00167     virtual bool addFunctionInvocations(ProgramSet* programSet);
00168 
00169 
00173     bool addGlobalIlluminationInvocation(Function* vsMain, const int groupOrder, int& internalCounter);
00174             
00178     bool addIlluminationInvocation(LightParams* curLightParams, Function* vsMain, const int groupOrder, int& internalCounter);
00179 
00180 
00181 // Attributes.
00182 protected:  
00183     // Track per vertex colour type.
00184     TrackVertexColourType mTrackVertexColourType;
00185     // Specular component enabled/disabled.
00186     bool mSpecularEnable;
00187     // Light list.
00188     LightParamsList mLightParamsList;
00189     // World view matrix parameter.
00190     UniformParameterPtr mWorldViewMatrix;
00191     // World view matrix inverse transpose parameter.
00192     UniformParameterPtr mWorldViewITMatrix;
00193     // Vertex shader input position parameter.
00194     ParameterPtr mVSInPosition;
00195     // Vertex shader input normal.
00196     ParameterPtr mVSInNormal;
00197     // Vertex shader diffuse.
00198     ParameterPtr mVSDiffuse;
00199     // Vertex shader output diffuse colour parameter.
00200     ParameterPtr mVSOutDiffuse;
00201     // Vertex shader output specular colour parameter.
00202     ParameterPtr mVSOutSpecular;
00203     // Derived scene colour parameter.
00204     UniformParameterPtr mDerivedSceneColour;
00205     // Ambient light colour parameter.
00206     UniformParameterPtr mLightAmbientColour;
00207     // Derived ambient light colour parameter.
00208     UniformParameterPtr mDerivedAmbientLightColour;
00209     // Surface ambient colour parameter.
00210     UniformParameterPtr mSurfaceAmbientColour;
00211     // Surface diffuse colour parameter.
00212     UniformParameterPtr mSurfaceDiffuseColour;
00213     // Surface specular colour parameter.
00214     UniformParameterPtr mSurfaceSpecularColour;
00215     // Surface emissive colour parameter.
00216     UniformParameterPtr mSurfaceEmissiveColour;
00217     // Surface shininess parameter.
00218     UniformParameterPtr mSurfaceShininess;
00219     // Shared blank light.
00220     static Light msBlankLight;
00221 
00222 };
00223 
00224 
00229 class _OgreRTSSExport FFPLightingFactory : public SubRenderStateFactory
00230 {
00231 public:
00232 
00236     virtual const String& getType() const;
00237 
00241     virtual SubRenderState* createInstance(ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator);
00242 
00246     virtual void writeInstance(MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass);
00247 
00248     
00249 protected:
00250 
00254     virtual SubRenderState* createInstanceImpl();
00255 
00256 
00257 };
00258 
00262 }
00263 }
00264 
00265 #endif
00266 #endif

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