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 // Fog calculation mode. 00141 CalcMode mCalcMode; 00142 // Fog formula. 00143 FogMode mFogMode; 00144 // Fog colour value. 00145 ColourValue mFogColourValue; 00146 // Fog parameters (density, start, end, 1/end-start). 00147 Vector4 mFogParamsValue; 00148 // True if the fog parameters should be taken from the pass. 00149 bool mPassOverrideParams; 00150 00151 // World view projection parameter. 00152 UniformParameterPtr mWorldViewProjMatrix; 00153 // Fog colour parameter. 00154 UniformParameterPtr mFogColour; 00155 // Fog parameters program parameter. 00156 UniformParameterPtr mFogParams; 00157 // Vertex shader input position parameter. 00158 ParameterPtr mVSInPos; 00159 // Vertex shader output fog colour parameter. 00160 ParameterPtr mVSOutFogFactor; 00161 // Pixel shader input fog factor. 00162 ParameterPtr mPSInFogFactor; 00163 // Vertex shader output depth. 00164 ParameterPtr mVSOutDepth; 00165 // Pixel shader input depth. 00166 ParameterPtr mPSInDepth; 00167 // Pixel shader output diffuse colour. 00168 ParameterPtr mPSOutDiffuse; 00169 }; 00170 00171 00176 class _OgreRTSSExport FFPFogFactory : public SubRenderStateFactory 00177 { 00178 public: 00179 00183 virtual const String& getType() const; 00184 00188 virtual SubRenderState* createInstance(ScriptCompiler* compiler, PropertyAbstractNode* prop, Pass* pass, SGScriptTranslator* translator); 00189 00193 virtual void writeInstance(MaterialSerializer* ser, SubRenderState* subRenderState, Pass* srcPass, Pass* dstPass); 00194 00195 00196 protected: 00197 00201 virtual SubRenderState* createInstanceImpl(); 00202 00203 00204 }; 00205 00209 } 00210 } 00211 00212 #endif 00213 #endif 00214
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:23