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 _ShaderFFPFog_ 00028 #define _ShaderFFPFog_ 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 00036 namespace Ogre { 00037 namespace RTShader { 00038 00050 class _OgreRTSSExport FFPFog : public SubRenderState 00051 { 00052 public: 00053 00054 // Fog calculation mode enum. 00055 enum CalcMode 00056 { 00057 CM_PER_VERTEX = 1, // Per vertex fog calculations. (Default). 00058 CM_PER_PIXEL = 2 // Per pixel fog calculations. 00059 }; 00060 00061 // Interface. 00062 public: 00063 00065 FFPFog(); 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 00090 virtual bool preAddToRenderState (const RenderState* renderState, Pass* srcPass, Pass* dstPass); 00091 00101 void setFogProperties (FogMode fogMode, 00102 const ColourValue& fogColour, 00103 float fogStart, 00104 float fogEnd, 00105 float fogDensity); 00106 00111 void setCalcMode (CalcMode calcMode) { mCalcMode = calcMode; } 00112 00116 CalcMode getCalcMode () const { return mCalcMode; } 00117 00118 static String Type; 00119 00120 // Protected methods 00121 protected: 00122 00126 virtual bool resolveParameters (ProgramSet* programSet); 00127 00131 virtual bool resolveDependencies (ProgramSet* programSet); 00132 00136 virtual bool addFunctionInvocations (ProgramSet* programSet); 00137 00138 // Attributes. 00139 protected: 00140 CalcMode mCalcMode; // Fog calculation mode. 00141 FogMode mFogMode; // Fog formula. 00142 ColourValue mFogColourValue; // Fog colour value. 00143 Vector4 mFogParamsValue; // Fog parameters (density, start, end, 1/end-start). 00144 bool mPassOverrideParams; // True if the fog parameters should be taken from the pass. 00145 00146 UniformParameterPtr mWorldViewProjMatrix; // World view projection parameter. 00147 UniformParameterPtr mFogColour; // Fog colour parameter. 00148 UniformParameterPtr mFogParams; // Fog parameters program parameter. 00149 ParameterPtr mVSInPos; // Vertex shader input position parameter. 00150 ParameterPtr mVSOutFogFactor; // Vertex shader output fog colour parameter. 00151 ParameterPtr mPSInFogFactor; // Pixel shader input fog factor. 00152 ParameterPtr mVSOutDepth; // Vertex shader output depth. 00153 ParameterPtr mPSInDepth; // Pixel shader input depth. 00154 ParameterPtr mPSOutDiffuse; // Pixel shader output diffuse colour. 00155 }; 00156 00157 00162 class _OgreRTSSExport FFPFogFactory : public SubRenderStateFactory 00163 { 00164 public: 00165 00169 virtual const String& getType () const; 00170 00174 virtual SubRenderState* createInstance (ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator); 00175 00179 virtual void writeInstance (MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass); 00180 00181 00182 protected: 00183 00187 virtual SubRenderState* createInstanceImpl (); 00188 00189 00190 }; 00191 00195 } 00196 } 00197 00198 #endif 00199 #endif 00200
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Fri May 25 23:36:26 2012