1 | #include "OgreDepthShadowMapRenderingRun.h"
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2 | #include "OgreIlluminationManager.h"
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3 |
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4 |
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5 | OgreDepthShadowMapRenderingRun::OgreDepthShadowMapRenderingRun(OgreSharedRuns* sharedRuns,
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6 | String name,
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7 | Light* light,
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8 | unsigned int resolutionX,
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9 | unsigned int resolutionY,
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10 | String materialName
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11 | )
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12 | :DepthShadowMapRenderingRun(resolutionX, resolutionY)
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13 | , OgreRenderingRun(1, 1)
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14 | , RenderingRun(1, 1)
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15 | {
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16 | this->light = light;
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17 | this->sharedRuns = sharedRuns;
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18 | this->name = name;
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19 | this->blurredname = name + "blurred";
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20 |
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21 | this->materialName = materialName;
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22 |
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23 | createDepthMap();
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24 | }
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25 |
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26 | void OgreDepthShadowMapRenderingRun::createDepthMap()
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27 | {
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28 |
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29 | TexturePtr texPtr = Ogre::TextureManager::getSingleton().createManual(name,
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30 | "default",
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31 | TEX_TYPE_2D,
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32 | resolutionX,
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33 | resolutionY,
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34 | 0,
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35 | 0,
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36 | PF_FLOAT16_RGBA,
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37 | TU_RENDERTARGET);
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38 | depthMapTexture = texPtr.getPointer();
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39 | depthMapCamera = Root::getSingleton()._getCurrentSceneManager()->createCamera(name + "_CAMERA");
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40 | //add viewport to rendertarget
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41 | HardwarePixelBuffer* hpb = (depthMapTexture->getBuffer()).getPointer();
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42 | RenderTarget* rt = hpb->getRenderTarget();
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43 | Viewport* v = rt->addViewport(depthMapCamera);
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44 | v->setBackgroundColour(ColourValue::White);
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45 | v->setOverlaysEnabled(false);
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46 | rt->setAutoUpdated(false);
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47 |
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48 | if(OgreIlluminationManager::getSingleton().getBlurShadowMap())
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49 | {
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50 | texPtr = Ogre::TextureManager::getSingleton().createManual(blurredname,
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51 | "default",
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52 | TEX_TYPE_2D,
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53 | resolutionX,
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54 | resolutionY,
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55 | 6,
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56 | 0,
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57 | PF_FLOAT16_RGBA,
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58 | TU_RENDERTARGET);
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59 | blurredDepthMapTexture = texPtr.getPointer();
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60 | hpb = (blurredDepthMapTexture->getBuffer()).getPointer();
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61 | rt = hpb->getRenderTarget();
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62 | v = rt->addViewport(depthMapCamera);
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63 | v->setOverlaysEnabled(false);
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64 | rt->setAutoUpdated(false);
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65 | }
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66 | }
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67 |
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68 | void OgreDepthShadowMapRenderingRun::updateFrame(unsigned long frameNum)
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69 | {
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70 | refreshLight(frameNum);
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71 |
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72 | if(light->getType() == Light::LT_POINT)
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73 | {
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74 | updateDepthMap();
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75 | }
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76 | else
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77 | {
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78 | updateDepthMap();
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79 | }
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80 | }
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81 |
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82 | void OgreDepthShadowMapRenderingRun::updateDepthCubeFace(int facenum)
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83 | {
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84 | }
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85 |
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86 | void OgreDepthShadowMapRenderingRun::updateDepthMap()
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87 | {
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88 | setMaterialForVisibles(materialName, depthMapCamera, false);
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89 | RenderTarget* rt = depthMapTexture->getBuffer().getPointer()->getRenderTarget();
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90 | Viewport* vp = rt->getViewport(0);
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91 |
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92 | rt->update();
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93 | restoreMaterials();
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94 |
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95 | if(OgreIlluminationManager::getSingleton().getBlurShadowMap())
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96 | {
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97 | rt = blurredDepthMapTexture->getBuffer().getPointer()->getRenderTarget();
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98 | Material* mat = (Material*) MaterialManager::getSingleton().getByName("GameTools/Blur").getPointer();
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99 | mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(depthMapTexture->getName());
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100 | renderFullscreenQuad("GameTools/Blur", rt);
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101 | }
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102 |
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103 | //rt->writeContentsToFile("shadowmap1.dds");
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104 |
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105 | //depthMapTexture->();
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106 | }
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107 | String OgreDepthShadowMapRenderingRun::getDepthMapTextureName()
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108 | {
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109 | if(OgreIlluminationManager::getSingleton().getBlurShadowMap())
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110 | return blurredname;
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111 |
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112 | return name;
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113 | }
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114 |
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115 | void OgreDepthShadowMapRenderingRun::refreshLight(unsigned long frameNum)
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116 | {
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117 |
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118 | if(light!= 0)
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119 | {
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120 | bool uselispsm = OgreIlluminationManager::getSingleton().getUseLISPSM();
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121 | bool usefocusing = OgreIlluminationManager::getSingleton().getFocusingShadowMap();
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122 | if(light->getType() == Light::LT_DIRECTIONAL)
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123 | {
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124 | Camera* viewcam = OgreIlluminationManager::getSingleton().getMainCamera();
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125 |
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126 | OgreFocusingMapRenderingRun* frun = (OgreFocusingMapRenderingRun*)
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127 | OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_FOCUSING_MAP)->asOgreRenderingRun();
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128 | frun->setCameraMatrices(viewcam->getViewMatrix(), viewcam->getProjectionMatrix());
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129 |
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130 | Vector3 lightpos = light->getParentSceneNode()->getWorldPosition();
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131 | Vector3 lightdir = light->getDirection();
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132 | lightdir.normalise();
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133 |
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134 | Vector3 min;
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135 | Vector3 max;
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136 |
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137 |
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138 | if(uselispsm)
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139 | {
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140 | Camera* maincam = OgreIlluminationManager::getSingleton().getMainCamera();
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141 | Vector3 viewdir = maincam->getDirection();
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142 | viewdir.normalise();
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143 | Vector3 campos = maincam->getPosition();
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144 | float nearclip = maincam->getNearClipDistance();
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145 |
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146 | float dotprod = viewdir.dotProduct(lightdir);
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147 | float sinGamma = sqrt(1.0 - dotprod * dotprod);
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148 |
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149 | Vector3 left = lightdir.crossProduct(viewdir);
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150 | left.normalise();
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151 | Vector3 up = left.crossProduct(lightdir);
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152 | up.normalise();
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153 | //left = lightdir.crossProduct(up);
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154 | left.normalise();
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155 | Matrix4 viewMatrix( left.x, left.y, left.z, 0,
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156 | up.x, up.y, up.z, 0,
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157 | lightdir.x, lightdir.y, lightdir.z, 0,
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158 | 0, 0, 0, 1);
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159 |
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160 | frun->setLightMatrix(viewMatrix);
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161 | OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
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162 | frameNum);
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163 | frun->getMinMax(min, max);
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164 |
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165 | float n;
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166 | float f;
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167 | float d = abs(max.y - min.y);
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168 |
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169 | float z_n = nearclip / sinGamma;
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170 | float one_min_singamma = (1 - sinGamma);
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171 | float fact = d * pow(one_min_singamma, 2);
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172 | float z_f = z_n + d * sinGamma * fact;
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173 | n = (z_n + sqrt(z_f * z_n)) / sinGamma;
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174 | ///n = 100000;
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175 | f = n + d;
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176 |
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177 | Vector3 pos = campos - up * (n - nearclip);
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178 | Matrix4 newViewMatrix( left.x, left.y, left.z, -left.dotProduct(pos),
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179 | up.x, up.y, up.z, -up.dotProduct(pos),
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180 | -lightdir.x, -lightdir.y, -lightdir.z, lightdir.dotProduct(pos),
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181 | 0, 0, 0, 1);
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182 |
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183 | Matrix4 lispMat = Matrix4::IDENTITY;
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184 |
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185 | lispMat[1][1] = f / (f - n);
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186 | lispMat[1][3] = f * n / (f - n);
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187 | lispMat[3][1] = 1;
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188 | lispMat[3][3] = 0;
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189 |
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190 | depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
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191 | depthMapCamera->setCustomViewMatrix(true, lispMat * newViewMatrix);
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192 | }
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193 | else
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194 | {
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195 | depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
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196 | depthMapCamera->setCustomViewMatrix(false);
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197 | depthMapCamera->setPosition(lightpos);
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198 | depthMapCamera->setDirection(lightdir);
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199 | }
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200 |
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201 |
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202 | Matrix4 lightMatrix = depthMapCamera->getViewMatrix();
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203 | frun->setLightMatrix(lightMatrix);
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204 |
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205 | OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
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206 | frameNum);
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207 |
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208 | frun->getMinMax(min, max);
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209 |
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210 |
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211 | Vector3 scale = (max - min);
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212 | scale *= 1.5; // just for safety
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213 | if(uselispsm)
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214 | scale.z += 1;
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215 | else
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216 | scale.z += 1000; //TODO: get scene bounding box to set z scale
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217 | Matrix4 projection = Matrix4::IDENTITY;
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218 | Matrix4 trans = Matrix4::IDENTITY;
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219 | trans.setTrans(Vector3(-(max.x + min.x) / 2.0,
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220 | -(max.y + min.y) / 2.0,
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221 | -(max.z + min.z) / 2.0));
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222 | Matrix4 scaleM = Matrix4::IDENTITY;
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223 | scaleM.setScale(Vector3(2.0 / scale.x, 2.0 / scale.y, -2.0 / scale.z));
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224 | projection = scaleM * trans;
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225 | depthMapCamera->setCustomProjectionMatrix(true, projection);
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226 | }
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227 | else if(light->getType() == Light::LT_SPOTLIGHT)
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228 | {
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229 | Camera* viewcam = OgreIlluminationManager::getSingleton().getMainCamera();
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230 |
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231 | OgreFocusingMapRenderingRun* frun = (OgreFocusingMapRenderingRun*)
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232 | OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_FOCUSING_MAP)->asOgreRenderingRun();
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233 | frun->setCameraMatrices(viewcam->getViewMatrix(), viewcam->getProjectionMatrix());
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234 |
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235 | Vector3 lightpos = light->getParentSceneNode()->getWorldPosition ();
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236 | Vector3 lightdir = light->getDirection();
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237 | lightdir.normalise();
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238 | Radian lightangle = light->getSpotlightOuterAngle();
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239 |
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240 | Vector3 min;
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241 | Vector3 max;
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242 |
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243 | if(uselispsm)
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244 | {
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245 | Camera* maincam = OgreIlluminationManager::getSingleton().getMainCamera();
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246 | Vector3 viewdir = maincam->getDirection();
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247 | viewdir.normalise();
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248 | Vector3 campos = maincam->getPosition();
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249 | float nearclip = maincam->getNearClipDistance();
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250 |
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251 | float dotprod = viewdir.dotProduct(lightdir);
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252 | float sinGamma = sqrt(1.0 - dotprod * dotprod);
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253 |
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254 | Vector3 left = lightdir.crossProduct(viewdir);
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255 | Vector3 up = left.crossProduct(lightdir);
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256 | up.normalise();
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257 | //left = lightdir.crossProduct(up);
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258 | left.normalise();
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259 |
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260 | depthMapCamera->setCustomProjectionMatrix(false);
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261 | depthMapCamera->setProjectionType(PT_PERSPECTIVE);
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262 | depthMapCamera->setFOVy(lightangle);
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263 | depthMapCamera->setAspectRatio(1);
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264 | depthMapCamera->setNearClipDistance(0.1);
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265 | depthMapCamera->setFarClipDistance(1.0);
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266 |
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267 | Matrix4 projMatrix = depthMapCamera->getProjectionMatrixWithRSDepth();
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268 |
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269 | Matrix4 viewMatrix( left.x, left.y, left.z, 0,
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270 | up.x, up.y, up.z, 0,
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271 | -lightdir.x, -lightdir.y, -lightdir.z, 0,
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272 | 0, 0, 0, 1);
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273 |
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274 | frun->setLightMatrix(projMatrix * viewMatrix);
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275 | OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
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276 | frameNum);
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277 | frun->getMinMax(min, max);
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278 |
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279 | float n;
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280 | float f;
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281 | float d = abs(max.y - min.y);
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282 |
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283 | float z_n = nearclip / sinGamma;
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284 | float one_min_singamma = (1 - sinGamma);
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285 | float fact = d * pow(one_min_singamma, 2);
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286 | float z_f = z_n + d * sinGamma * fact;
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287 | n = (z_n + sqrt(z_f * z_n)) / sinGamma;
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288 | ///n = 100000;
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289 | f = n + d;
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290 |
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291 | Vector3 pos = campos - up * (n - nearclip);
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292 | Matrix4 newViewMatrix( left.x, left.y, left.z, -left.dotProduct(pos),
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293 | up.x, up.y, up.z, -up.dotProduct(pos),
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294 | -lightdir.x, -lightdir.y, -lightdir.z, lightdir.dotProduct(pos),
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295 | 0, 0, 0, 1);
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296 |
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297 | Matrix4 lispMat = Matrix4::IDENTITY;
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298 |
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299 | lispMat[1][1] = f / (f - n);
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300 | lispMat[1][3] = f * n / (f - n);
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301 | lispMat[3][1] = 1;
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302 | lispMat[3][3] = 0;
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303 |
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304 | depthMapCamera->setCustomProjectionMatrix(true, Matrix4::IDENTITY);
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305 | depthMapCamera->setCustomViewMatrix(true, lispMat * projMatrix * newViewMatrix);
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306 | }
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307 | else
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308 | {
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309 | depthMapCamera->setCustomProjectionMatrix(false);
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310 | depthMapCamera->setCustomViewMatrix(false);
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311 | depthMapCamera->setPosition(lightpos);
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312 | depthMapCamera->setDirection(lightdir);
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313 | depthMapCamera->setProjectionType(PT_PERSPECTIVE);
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314 | depthMapCamera->setFOVy(lightangle);
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315 | depthMapCamera->setAspectRatio(1);
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316 | depthMapCamera->setNearClipDistance(0.1);
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317 | depthMapCamera->setFarClipDistance(1.0);
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318 | }
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319 |
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320 | if(!usefocusing)
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321 | {
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322 | depthMapCamera->setFarClipDistance(light->getAttenuationRange() );
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323 | }
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324 | else
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325 | {
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326 | Matrix4 lightMatrix = depthMapCamera->getViewMatrix();
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327 | frun->setLightMatrix(lightMatrix);
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328 |
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329 | OgreIlluminationManager::getSingleton().updateGlobalRun( ILLUMRUN_FOCUSING_MAP,
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330 | frameNum);
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331 |
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332 | frun->getMinMax(min, max);
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333 |
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334 | if(min.z < 0)
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335 | {
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336 | float farP= -1.5 * min.z;
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337 | if(farP < 0.2) farP = 0.2;
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338 | depthMapCamera->setFarClipDistance(farP);
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339 |
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340 | Vector3 scale = (max - min);
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341 | scale *= 1.5; // just for safety
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342 |
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343 | Matrix4 projection = Matrix4::IDENTITY;
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344 | Matrix4 trans = Matrix4::IDENTITY;
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345 | trans.setTrans(Vector3(-(max.x + min.x) / 2.0,
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346 | -(max.y + min.y) / 2.0,
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347 | 0));
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348 | Matrix4 scaleM = Matrix4::IDENTITY;
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349 | scaleM.setScale(Vector3(2.0 / scale.x, 2.0 / scale.y, 1));
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350 | projection = scaleM * trans;
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351 | depthMapCamera->setCustomProjectionMatrix(true, projection * depthMapCamera->getProjectionMatrix());
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352 | }
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353 | }
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354 | }
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355 | else//point light
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356 | {
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357 | /* Vector3 pos = light->getParentNode()->getWorldPosition();
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358 | Vector3 dir = -pos;
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359 | depthMapCamera->setDirection( dir );
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360 | depthMapCamera->setPosition(pos);
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361 | depthMapCamera->setProjectionType(PT_PERSPECTIVE);
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362 | depthMapCamera->setFOVy(Radian(Degree(140)));
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363 | depthMapCamera->setNearClipDistance(1);
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364 | // depthMapCamera->setFarClipDistance(200);
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365 |
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366 | //OGRE_EXCEPT(0, "NOT implemented for Pointlight", "OgreDepthShadowMapRenderingRun::refreshLight");
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367 | */
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368 | /*Vector3 pos = light->getParentNode()->getWorldPosition();
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369 | Vector3 dir = -pos;
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370 | depthMapCamera->setDirection( dir );
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371 | depthMapCamera->setPosition(pos);
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372 | depthMapCamera->setProjectionType(PT_ORTHOGRAPHIC);
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373 | depthMapCamera->*/
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374 |
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375 | }
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376 | }
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377 | }
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378 |
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379 | Matrix4 OgreDepthShadowMapRenderingRun::getLightViewMatrix()
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380 | {
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381 | return depthMapCamera->getViewMatrix();
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382 | }
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383 |
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384 | Matrix4 OgreDepthShadowMapRenderingRun::getLightViewProjMatrix()
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385 | {
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386 | return depthMapCamera->getProjectionMatrixWithRSDepth() * depthMapCamera->getViewMatrix();
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387 | }
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388 |
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