# 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) 2000-2009 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     (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         UniformParameterPtr     mPosition;          // Light position.
    00098         UniformParameterPtr     mDirection;         // Light direction.
    00099         UniformParameterPtr     mAttenuatParams;    // Attenuation parameters.
    00100         UniformParameterPtr     mSpotParams;        // Spot light parameters.
    00101         UniformParameterPtr     mDiffuseColour;     // Diffuse colour.
    00102         UniformParameterPtr     mSpecularColour;    // Specular colour.
    00103
    00104     };
    00105
    00106     typedef vector<LightParams>::type               LightParamsList;
    00107     typedef LightParamsList::iterator               LightParamsIterator;
    00108     typedef LightParamsList::const_iterator         LightParamsConstIterator;
    00109
    00110 // Protected methods
    00111 protected:
    00117     void                    setTrackVertexColourType(TrackVertexColourType type) { mTrackVertexColourType = type; }
    00118
    00122     TrackVertexColourType   getTrackVertexColourType() const { return mTrackVertexColourType; }
    00123
    00128     void                    setLightCount           (const int lightCount[3]);
    00129
    00134     void                    getLightCount           (int lightCount[3]) const;
    00135
    00141     void                    setSpecularEnable       (bool enable) { mSpecularEnable = enable; }
    00142
    00146     bool                    getSpecularEnable       () const      { return mSpecularEnable; }
    00147
    00151     virtual bool            resolveParameters       (ProgramSet* programSet);
    00152
    00156     virtual bool            resolveDependencies     (ProgramSet* programSet);
    00157
    00161     virtual bool            addFunctionInvocations  (ProgramSet* programSet);
    00162
    00163
    00167     bool            addGlobalIlluminationInvocation (Function* vsMain, const int groupOrder, int& internalCounter);
    00168
    00172     bool            addIlluminationInvocation       (LightParams* curLightParams, Function* vsMain, const int groupOrder, int& internalCounter);
    00173
    00174
    00175 // Attributes.
    00176 protected:
    00177     TrackVertexColourType   mTrackVertexColourType;         // Track per vertex colour type.
    00178     bool                    mSpecularEnable;                // Specular component enabled/disabled.
    00179     LightParamsList         mLightParamsList;               // Light list.
    00180     UniformParameterPtr     mWorldViewMatrix;               // World view matrix parameter.
    00181     UniformParameterPtr     mWorldViewITMatrix;             // World view matrix inverse transpose parameter.
    00182     ParameterPtr            mVSInPosition;                  // Vertex shader input position parameter.
    00183     ParameterPtr            mVSInNormal;                    // Vertex shader input normal.
    00184     ParameterPtr            mVSDiffuse;                     // Vertex shader diffuse.
    00185     ParameterPtr            mVSOutDiffuse;                  // Vertex shader output diffuse colour parameter.
    00186     ParameterPtr            mVSOutSpecular;                 // Vertex shader output specular colour parameter.
    00187     UniformParameterPtr     mDerivedSceneColour;            // Derived scene colour parameter.
    00188     UniformParameterPtr     mLightAmbientColour;            // Ambient light colour parameter.
    00189     UniformParameterPtr     mDerivedAmbientLightColour;     // Derived ambient light colour parameter.
    00190     UniformParameterPtr     mSurfaceAmbientColour;          // Surface ambient colour parameter.
    00191     UniformParameterPtr     mSurfaceDiffuseColour;          // Surface diffuse colour parameter.
    00192     UniformParameterPtr     mSurfaceSpecularColour;         // Surface specular colour parameter.
    00193     UniformParameterPtr     mSurfaceEmissiveColour;         // Surface emissive colour parameter.
    00194     UniformParameterPtr     mSurfaceShininess;              // Surface shininess parameter.
    00195     static Light            msBlankLight;                   // Shared blank light.
    00196
    00197 };
    00198
    00199
    00204 class _OgreRTSSExport FFPLightingFactory : public SubRenderStateFactory
    00205 {
    00206 public:
    00207
    00211     virtual const String&   getType             () const;
    00212
    00216     virtual SubRenderState* createInstance      (ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass);
    00217
    00221     virtual void            writeInstance       (MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass);
    00222
    00223
    00224 protected:
    00225
    00229     virtual SubRenderState* createInstanceImpl  ();
    00230
    00231
    00232 };
    00233
    00237 }
    00238 }
    00239
    00240 #endif
    00241 #endif

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun May 8 2011 20:28:09