1 | #include "OgreCausticReceiverRenderTechnique.h"
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2 | #include "OgreTechniqueGroup.h"
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3 | #include "OgreIlluminationManager.h"
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4 | #include "OgreCausticCubeMapRenderingRun.h"
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5 | #include "OgreCubeMapRenderingRun.h"
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6 |
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7 | OgreCausticReceiverRenderTechnique::OgreCausticReceiverRenderTechnique(
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8 | int maxcasters,
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9 | String causticVertexProgram,
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10 | String causticFragmentProgram,
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11 | SceneBlendFactor passBlendingSRC,
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12 | SceneBlendFactor passBlendingDEST,
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13 | bool createNewPasses,
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14 | int startTextureUnitID,
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15 | String casterCenterVariableName,
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16 | String attenuationVariableName,
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17 | bool bindDistanceMap,
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18 | Pass* pass,
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19 | OgreRenderable* parentRenderable,
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20 | OgreTechniqueGroup* parentTechniqueGroup)
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21 | :RenderTechnique( parentRenderable, parentTechniqueGroup),
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22 | OgreRenderTechnique(pass, parentRenderable, parentTechniqueGroup),
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23 | CausticReceiverRenderTechnique(parentRenderable, parentTechniqueGroup)
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24 | {
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25 | this->passBlendingSRC = passBlendingSRC;
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26 | this->passBlendingDEST = passBlendingDEST;
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27 | this->maxcasters = maxcasters;
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28 | this->causticVertexProgram = causticVertexProgram;
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29 | this->causticFragmentProgram = causticFragmentProgram;
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30 | this->createNewPasses = createNewPasses;
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31 | this->startTextureUnitID = startTextureUnitID;
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32 | this->casterCenterVariableName = casterCenterVariableName;
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33 | this->attenuationVariableName = attenuationVariableName;
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34 | this->bindDistanceMap = bindDistanceMap;
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35 | bindAttenuation = false;
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36 | if(attenuationVariableName != "")
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37 | bindAttenuation = true;
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38 |
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39 | if(createNewPasses)
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40 | {
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41 | //insert new passes
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42 | Ogre::Technique* techn = pass->getParent();
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43 | Technique::PassIterator it = techn->getPassIterator();
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44 |
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45 | int index = 0;
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46 | while(it.hasMoreElements())
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47 | {
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48 | if( it.getNext() == pass)
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49 | break;
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50 | index++;
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51 | it.moveNext();
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52 | }
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53 |
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54 | index++;
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55 | for(int i = 0; i < maxcasters; i++)
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56 | {
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57 | int lastpass = techn->getNumPasses();
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58 | Pass* newpass = techn->createPass();
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59 | passes.push_back(newpass);
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60 |
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61 | newpass->setVertexProgram(causticVertexProgram);
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62 | newpass->setFragmentProgram(causticFragmentProgram);
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63 |
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64 | GpuProgramParameters* Vparams = newpass->getVertexProgramParameters().getPointer();
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65 | Vparams->setNamedAutoConstant("WorldViewProj",
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66 | GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
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67 | Vparams->setNamedAutoConstant("World",
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68 | GpuProgramParameters::ACT_WORLD_MATRIX);
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69 | GpuProgramParameters* Fparams = newpass->getFragmentProgramParameters().getPointer();
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70 | //Fparams->setNamedConstant("cubeMapCameraPosition", Vector3(0,0,0));
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71 |
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72 | TextureUnitState* st = newpass->createTextureUnitState();
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73 | st->setTextureFiltering(TFO_BILINEAR);
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74 | if(bindDistanceMap)
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75 | {
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76 | TextureUnitState* st2 = newpass->createTextureUnitState();
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77 | st2->setTextureFiltering(TFO_BILINEAR);
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78 | }
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79 |
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80 | newpass->setSceneBlending(passBlendingSRC, passBlendingDEST);
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81 | newpass->setDepthBias(1);
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82 |
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83 | techn->movePass(lastpass, index);
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84 | }
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85 | }
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86 |
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87 | }
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88 |
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89 | OgreCausticReceiverRenderTechnique::~OgreCausticReceiverRenderTechnique()
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90 | {
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91 |
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92 | }
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93 |
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94 | void OgreCausticReceiverRenderTechnique::update(unsigned long frameNum)
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95 | {
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96 | //find nearest casters
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97 | causticCasters.clear();
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98 | OgreIlluminationManager::getSingleton().getNearestCausticCasters(
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99 | ((OgreSharedRuns*)sharedRuns)->getRootPosition(),
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100 | &causticCasters,
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101 | maxcasters);
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102 |
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103 | //fill passes
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104 | for(unsigned int i = 0; i < maxcasters; i++)
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105 | {
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106 | if(causticCasters.size() > i)
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107 | {
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108 | //update caustic caster
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109 | causticCasters.at(i)->updateRun(ILLUMRUN_PHOTONMAP, frameNum);
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110 | causticCasters.at(i)->updateRun(ILLUMRUN_CAUSTIC_CUBEMAP, frameNum);
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111 |
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112 | //set texture to pass
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113 | OgreCausticCubeMapRenderingRun* cauCubeRun =
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114 | (OgreCausticCubeMapRenderingRun*) causticCasters.at(i)->
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115 | getRun(ILLUMRUN_CAUSTIC_CUBEMAP)->asOgreRenderingRun();
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116 |
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117 | Pass* passToSet = this->pass;
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118 | int p = bindDistanceMap?i*2:i;
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119 | int textureUnit = startTextureUnitID + p;
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120 | if(createNewPasses)
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121 | {
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122 | passToSet = passes.at(i);
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123 | passToSet->setActive(true);
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124 | textureUnit = 0;
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125 | }
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126 |
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127 | passToSet->getTextureUnitState(textureUnit)->setTextureName(
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128 | cauCubeRun->getCausticCubeMapTextureName());
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129 | if(bindDistanceMap)
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130 | {
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131 | OgreCubeMapRenderingRun* distCubeRun =
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132 | (OgreCubeMapRenderingRun*) causticCasters.at(i)->
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133 | getRun(ILLUMRUN_DISTANCE_CUBEMAP)->asOgreRenderingRun();
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134 | if(distCubeRun)
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135 | passToSet->getTextureUnitState(textureUnit + 1)->setTextureName(
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136 | distCubeRun->getCubeMapTextureName());
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137 | }
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138 |
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139 | //set caster position nad caustic attenuation
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140 | GpuProgramParameters* Fparams = passToSet->getFragmentProgramParameters().getPointer();
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141 | String centerVarName = casterCenterVariableName;
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142 | String attenuationVarName = attenuationVariableName;
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143 | if(!createNewPasses)
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144 | {
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145 | centerVarName += StringConverter::toString(i+1);
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146 | attenuationVarName += StringConverter::toString(i+1);
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147 | }
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148 | Fparams->setNamedConstant(centerVarName,
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149 | causticCasters.at(i)->getRootPosition(ILLUMRUN_CAUSTIC_CUBEMAP));
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150 | if(bindAttenuation)
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151 | Fparams->setNamedConstant(attenuationVarName,
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152 | cauCubeRun->getAttenuation());
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153 | }
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154 | else if(createNewPasses)
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155 | passes.at(i)->setActive(false);
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156 | }
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157 | }
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158 |
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159 |
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160 | namespace CausticReceiverParsers
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161 | {
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162 | ///Technique parsers
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163 | void parseMaxCasters(String& params, RenderTechniqueFactory* factory)
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164 | {
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165 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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166 | f->maxcasters = StringConverter::parseInt(params);
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167 | }
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168 |
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169 | void parseVertexProgram(String& params, RenderTechniqueFactory* factory)
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170 | {
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171 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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172 | f->causticVertexProgram = params;
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173 | }
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174 |
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175 | void parseFragmentProgram(String& params, RenderTechniqueFactory* factory)
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176 | {
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177 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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178 | f->causticFragmentProgram = params;
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179 | }
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180 |
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181 | SceneBlendFactor convertBlendFactor(const String& param)
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182 | {
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183 | if (param == "one")
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184 | return SBF_ONE;
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185 | else if (param == "zero")
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186 | return SBF_ZERO;
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187 | else if (param == "dest_colour")
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188 | return SBF_DEST_COLOUR;
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189 | else if (param == "src_colour")
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190 | return SBF_SOURCE_COLOUR;
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191 | else if (param == "one_minus_dest_colour")
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192 | return SBF_ONE_MINUS_DEST_COLOUR;
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193 | else if (param == "one_minus_src_colour")
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194 | return SBF_ONE_MINUS_SOURCE_COLOUR;
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195 | else if (param == "dest_alpha")
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196 | return SBF_DEST_ALPHA;
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197 | else if (param == "src_alpha")
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198 | return SBF_SOURCE_ALPHA;
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199 | else if (param == "one_minus_dest_alpha")
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200 | return SBF_ONE_MINUS_DEST_ALPHA;
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201 | else if (param == "one_minus_src_alpha")
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202 | return SBF_ONE_MINUS_SOURCE_ALPHA;
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203 | }
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204 |
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205 | void parsePassBlending(String& params, RenderTechniqueFactory* factory)
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206 | {
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207 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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208 | StringVector vecparams = StringUtil::split(params, " \t");
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209 | if(vecparams.size() == 1)
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210 | {
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211 | if (vecparams[0] == "none")
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212 | {
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213 | f->passBlendingSRC = SBF_ONE;
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214 | f->passBlendingDEST = SBF_ZERO;
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215 | }
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216 | if (vecparams[0] == "add")
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217 | {
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218 | f->passBlendingSRC = SBF_ONE;
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219 | f->passBlendingDEST = SBF_ONE;
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220 | }
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221 | else if (vecparams[0] == "modulate")
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222 | {
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223 | f->passBlendingSRC = SBF_DEST_COLOUR;
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224 | f->passBlendingDEST = SBF_ZERO;
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225 | }
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226 | else if (vecparams[0] == "colour_blend")
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227 | {
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228 | f->passBlendingSRC = SBF_SOURCE_COLOUR;
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229 | f->passBlendingDEST = SBF_ONE_MINUS_SOURCE_COLOUR;
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230 | }
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231 | else if (vecparams[0] == "alpha_blend")
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232 | {
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233 | f->passBlendingSRC = SBF_SOURCE_ALPHA;
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234 | f->passBlendingDEST = SBF_ONE_MINUS_SOURCE_ALPHA;
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235 | }
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236 | }
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237 | else if (vecparams.size() == 2)
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238 | {
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239 | f->passBlendingSRC = convertBlendFactor(vecparams[0]);
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240 | f->passBlendingDEST = convertBlendFactor(vecparams[1]) ;
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241 | }
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242 | }
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243 |
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244 | void parseCreateNewPasses(String& params, RenderTechniqueFactory* factory)
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245 | {
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246 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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247 | f->createNewPasses = StringConverter::parseBool(params);
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248 | }
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249 |
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250 | void parseStartTexID(String& params, RenderTechniqueFactory* factory)
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251 | {
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252 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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253 | f->startTextureUnitID = StringConverter::parseInt(params);
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254 | }
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255 |
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256 | void parseCenterVarName(String& params, RenderTechniqueFactory* factory)
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257 | {
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258 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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259 | f->casterCenterVariableName = params;
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260 | }
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261 |
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262 | void parseAttenuationVarName(String& params, RenderTechniqueFactory* factory)
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263 | {
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264 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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265 | f->attenuationVariableName = params;
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266 | }
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267 |
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268 | void parseBindDistanceMap(String& params, RenderTechniqueFactory* factory)
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269 | {
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270 | OgreCausticReceiverRenderTechniqueFactory* f = (OgreCausticReceiverRenderTechniqueFactory*) factory;
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271 | f->bindDistanceMap = StringConverter::parseBool(params);
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272 | }
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273 | }
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274 |
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275 | OgreCausticReceiverRenderTechniqueFactory::OgreCausticReceiverRenderTechniqueFactory()
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276 | {
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277 | typeName = "CausticReceiver";
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278 |
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279 | using namespace CausticReceiverParsers;
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280 | //register parsers
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281 | this->attributeParsers.insert(AttribParserList::value_type("max_caster_count", (ILLUM_ATTRIBUTE_PARSER) parseMaxCasters));
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282 | this->attributeParsers.insert(AttribParserList::value_type("vertex_program_name", (ILLUM_ATTRIBUTE_PARSER) parseVertexProgram));
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283 | this->attributeParsers.insert(AttribParserList::value_type("fragment_program_name", (ILLUM_ATTRIBUTE_PARSER) parseFragmentProgram));
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284 | this->attributeParsers.insert(AttribParserList::value_type("pass_blending", (ILLUM_ATTRIBUTE_PARSER) parsePassBlending));
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285 | this->attributeParsers.insert(AttribParserList::value_type("new_passes", (ILLUM_ATTRIBUTE_PARSER) parseCreateNewPasses));
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286 | this->attributeParsers.insert(AttribParserList::value_type("start_tex_id", (ILLUM_ATTRIBUTE_PARSER) parseStartTexID));
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287 | this->attributeParsers.insert(AttribParserList::value_type("center_var_name", (ILLUM_ATTRIBUTE_PARSER) parseCenterVarName));
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288 | this->attributeParsers.insert(AttribParserList::value_type("attenuation_var_name", (ILLUM_ATTRIBUTE_PARSER) parseAttenuationVarName));
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289 | this->attributeParsers.insert(AttribParserList::value_type("bind_distance_map", (ILLUM_ATTRIBUTE_PARSER) parseBindDistanceMap));
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290 | }
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291 |
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292 | OgreRenderTechnique* OgreCausticReceiverRenderTechniqueFactory::createInstance(
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293 | IllumTechniqueParams* params,
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294 | Pass* pass,
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295 | OgreRenderable* parentRenderable,
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296 | OgreTechniqueGroup* parentTechniqueGroup)
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297 | {
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298 | //reset parameters
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299 | maxcasters = 1;
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300 | causticVertexProgram = "GTP/Basic/Shaded_VS";
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301 | causticFragmentProgram = "GTP/Caustic/GatherCaustic_Cube_PS";
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302 | passBlendingSRC = SBF_DEST_COLOUR;
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303 | passBlendingDEST = SBF_ONE;
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304 | createNewPasses = true;
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305 | startTextureUnitID = 0;
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306 | casterCenterVariableName = "cubeMapCameraPosition";
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307 | attenuationVariableName = "";
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308 | bindDistanceMap = false;
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309 |
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310 | parseParams(params);
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311 |
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312 | OgreCausticReceiverRenderTechnique* result = new OgreCausticReceiverRenderTechnique(
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313 | maxcasters,
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314 | causticVertexProgram,
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315 | causticFragmentProgram,
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316 | passBlendingSRC,
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317 | passBlendingDEST,
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318 | createNewPasses,
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319 | startTextureUnitID,
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320 | casterCenterVariableName,
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321 | attenuationVariableName,
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322 | bindDistanceMap,
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323 | pass,
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324 | parentRenderable,
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325 | parentTechniqueGroup);
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326 |
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327 | return result;
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328 | }
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