# OgreShaderExPerPixelLighting.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) 2000-2009 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 _ShaderExPerPixelLighting_
    00028 #define _ShaderExPerPixelLighting_
    00029
    00030 #include "OgreShaderPrerequisites.h"
    00031 #ifdef RTSHADER_SYSTEM_BUILD_EXT_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
    00051 class _OgreRTSSExport PerPixelLighting : public SubRenderState
    00052 {
    00053
    00054 // Interface.
    00055 public:
    00057     PerPixelLighting();
    00058
    00062     virtual const String&   getType                 () const;
    00063
    00067     virtual int             getExecutionOrder       () const;
    00068
    00072     virtual void            updateGpuProgramsParams (Renderable* rend, Pass* pass, const AutoParamDataSource* source, const LightList* pLightList);
    00073
    00077     virtual void            copyFrom                (const SubRenderState& rhs);
    00078
    00079
    00083     virtual bool            preAddToRenderState     (RenderState* renderState, Pass* srcPass, Pass* dstPass);
    00084
    00085
    00086
    00087     static String Type;
    00088
    00089 // Protected types:
    00090 protected:
    00091
    00092     // Per light parameters.
    00093     struct _OgreRTSSExport LightParams
    00094     {
    00095         Light::LightTypes       mType;              // Light type.
    00096         UniformParameterPtr     mPosition;          // Light position.
    00097         UniformParameterPtr     mDirection;         // Light direction.
    00098         UniformParameterPtr     mAttenuatParams;    // Attenuation parameters.
    00099         UniformParameterPtr     mSpotParams;        // Spot light parameters.
    00100         UniformParameterPtr     mDiffuseColour;     // Diffuse colour.
    00101         UniformParameterPtr     mSpecularColour;    // Specular colour.
    00102
    00103     };
    00104
    00105     typedef vector<LightParams>::type               LightParamsList;
    00106     typedef LightParamsList::iterator               LightParamsIterator;
    00107     typedef LightParamsList::const_iterator         LightParamsConstIterator;
    00108
    00109 // Protected methods
    00110 protected:
    00111
    00117     void                    setTrackVertexColourType(TrackVertexColourType type) { mTrackVertexColourType = type; }
    00118
    00122     TrackVertexColourType   getTrackVertexColourType() const { return mTrackVertexColourType; }
    00123
    00124
    00129     void                    setLightCount           (const int lightCount[3]);
    00130
    00135     void                    getLightCount           (int lightCount[3]) const;
    00141     void                    setSpecularEnable       (bool enable) { mSpecularEnable = enable; }
    00142
    00146     bool                    getSpecularEnable       () const      { return mSpecularEnable; }
    00147
    00148
    00152     virtual bool            resolveParameters           (ProgramSet* programSet);
    00153
    00155     bool                    resolveGlobalParameters     (ProgramSet* programSet);
    00156
    00158     bool                    resolvePerLightParameters   (ProgramSet* programSet);
    00159
    00163     virtual bool            resolveDependencies     (ProgramSet* programSet);
    00164
    00168     virtual bool            addFunctionInvocations  (ProgramSet* programSet);
    00169
    00170
    00174     bool            addVSInvocation                     (Function* vsMain, const int groupOrder, int& internalCounter);
    00175
    00176
    00180     bool            addPSGlobalIlluminationInvocation   (Function* psMain, const int groupOrder, int& internalCounter);
    00181
    00185     bool            addPSIlluminationInvocation     (LightParams* curLightParams, Function* psMain, const int groupOrder, int& internalCounter);
    00186
    00190     bool            addPSFinalAssignmentInvocation  (Function* psMain, const int groupOrder, int& internalCounter);
    00191
    00192
    00193 // Attributes.
    00194 protected:
    00195     TrackVertexColourType   mTrackVertexColourType;         // Track per vertex colour type.
    00196     bool                    mSpecularEnable;                // Specular component enabled/disabled.
    00197     LightParamsList         mLightParamsList;               // Light list.
    00198     UniformParameterPtr     mWorldViewMatrix;               // World view matrix parameter.
    00199     UniformParameterPtr     mWorldViewITMatrix;             // World view matrix inverse transpose parameter.
    00200     ParameterPtr            mVSInPosition;                  // Vertex shader input position parameter.
    00201     ParameterPtr            mVSOutViewPos;                  // Vertex shader output view position (position in camera space) parameter.
    00202     ParameterPtr            mPSInViewPos;                   // Pixel shader input view position (position in camera space) parameter.
    00203     ParameterPtr            mVSInNormal;                    // Vertex shader input normal.
    00204     ParameterPtr            mVSOutNormal;                   // Vertex shader output normal.
    00205     ParameterPtr            mPSInNormal;                    // Pixel shader input normal.
    00206     ParameterPtr            mPSTempDiffuseColour;           // Pixel shader temporary diffuse calculation parameter.
    00207     ParameterPtr            mPSTempSpecularColour;          // Pixel shader temporary specular calculation parameter.
    00208     ParameterPtr            mPSDiffuse;                     // Pixel shader input/local diffuse parameter.
    00209     ParameterPtr            mPSSpecular;                    // Pixel shader input/local specular parameter.
    00210     ParameterPtr            mPSOutDiffuse;                  // Pixel shader output diffuse parameter.
    00211     ParameterPtr            mPSOutSpecular;                 // Pixel shader output specular parameter.
    00212     UniformParameterPtr     mDerivedSceneColour;            // Derived scene colour parameter.
    00213     UniformParameterPtr     mLightAmbientColour;            // Ambient light colour parameter.
    00214     UniformParameterPtr     mDerivedAmbientLightColour;     // Derived ambient light colour parameter.
    00215     UniformParameterPtr     mSurfaceAmbientColour;          // Surface ambient colour parameter.
    00216     UniformParameterPtr     mSurfaceDiffuseColour;          // Surface diffuse colour parameter.
    00217     UniformParameterPtr     mSurfaceSpecularColour;         // Surface specular colour parameter.
    00218     UniformParameterPtr     mSurfaceEmissiveColour;         // Surface emissive colour parameter.
    00219     UniformParameterPtr     mSurfaceShininess;              // Surface shininess parameter.
    00220     static Light            msBlankLight;                   // Shared blank light.
    00221 };
    00222
    00223
    00228 class _OgreRTSSExport PerPixelLightingFactory : public SubRenderStateFactory
    00229 {
    00230 public:
    00231
    00235     virtual const String&   getType             () const;
    00236
    00240     virtual SubRenderState* createInstance      (ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass);
    00241
    00245     virtual void            writeInstance       (MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass);
    00246
    00247
    00248 protected:
    00249
    00253     virtual SubRenderState* createInstanceImpl  ();
    00254
    00255
    00256 };
    00257
    00261 }
    00262 }
    00263
    00264 #endif
    00265 #endif
    00266

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Wed Nov 3 2010 19:24:52