1 | #include "OgrePMWeightComputeRenderingRun.h"
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2 | #include "OgreIlluminationManager.h"
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3 | #include "OgrePMEntryPointMapRenderingRun.h"
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4 |
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5 | OgrePMWeightComputeRenderingRun::OgrePMWeightComputeRenderingRun(String name, String LightName)
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6 | : OgreRenderingRun(1, 1)
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7 | , RenderingRun(1, 1)
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8 | {
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9 | this->name = name;
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10 | weights = 0;
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11 |
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12 | this->light = Root::getSingleton()._getCurrentSceneManager()->getLight(LightName);
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13 | createWeightMap();
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14 |
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15 | OgreIlluminationManager::getSingleton().createGlobalRun(ILLUMRUN_PM_ENTRYPOINTMAP);
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16 | }
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17 |
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18 | void OgrePMWeightComputeRenderingRun::createWeightMap()
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19 | {
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20 |
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21 | unsigned int entryPointCnt = OgreIlluminationManager::getSingleton().getPathMapEntryPoints().size();
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22 | int width = entryPointCnt / 4096;
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23 | int height = 4096;
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24 | TexturePtr texPtr = Ogre::TextureManager::getSingleton().createManual(name,
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25 | "default",
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26 | TEX_TYPE_2D,
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27 | width,
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28 | height,
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29 | 0,
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30 | 0,
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31 | PF_FLOAT32_R,
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32 | TU_RENDERTARGET);
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33 | weightTexture = texPtr.getPointer();
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34 | //add viewport to rendertarget
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35 | HardwarePixelBuffer* hpb = (weightTexture->getBuffer()).getPointer();
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36 | RenderTarget* rt = hpb->getRenderTarget();
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37 | Camera* wc = Root::getSingleton()._getCurrentSceneManager()->createCamera(name + "_CAMERA");
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38 | Viewport* v = rt->addViewport(wc);
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39 | v->setOverlaysEnabled(false);
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40 | rt->setAutoUpdated(false);
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41 | }
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42 |
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43 |
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44 |
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45 | void OgrePMWeightComputeRenderingRun::updateFrame(unsigned long frameNum)
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46 | {
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47 | switch(light->getType())
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48 | {
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49 | case Light::LT_SPOTLIGHT:
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50 |
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51 | MaterialPtr mat = MaterialManager::getSingleton().getByName("GTP/PathMap_ComputeWeights");
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52 |
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53 | GpuProgramParameters* Fparams = mat->getTechnique(0)->getPass(0)->getFragmentProgramParameters().getPointer();
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54 |
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55 | Vector3 lightPos = light->getPosition();
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56 | Vector3 lightDir = light->getDirection();
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57 | // Radian lightAngle = light->getSpotlightOuterAngle();
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58 | unsigned int entryPointCnt = OgreIlluminationManager::getSingleton().getPathMapEntryPoints().size();
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59 | int col = entryPointCnt / 4096;
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60 |
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61 | //Fparams->setNamedConstant("lightTransform", lightMatrix);
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62 | Fparams->setNamedConstant("nRadionColumns", col);
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63 | Fparams->setNamedConstant("lightPos", lightPos);
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64 | Fparams->setNamedConstant("lightDir", lightDir);
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65 |
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66 | OgrePMEntryPointMapRenderingRun* PMEPrun = (OgrePMEntryPointMapRenderingRun*)
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67 | OgreIlluminationManager::getSingleton().getGlobalRun(ILLUMRUN_PM_ENTRYPOINTMAP)->asOgreRenderingRun();
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68 | mat->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setTextureName(
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69 | PMEPrun->getEntryPointTextureName());
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70 |
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71 | RenderTarget* rt = weightTexture->getBuffer().getPointer()->getRenderTarget();
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72 | renderFullscreenQuad(mat->getName(), rt);
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73 |
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74 | //rt->writeContentsToFile("focusingmap.dds");
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75 |
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76 |
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77 | break;
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78 | }
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79 |
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80 | unsigned int clustercount = OgreIlluminationManager::getSingleton().getPathMapClusterLengthsSize();
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81 | if(weights == 0)
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82 | weights = new float[clustercount];
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83 |
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84 | unsigned int entryPointCnt = OgreIlluminationManager::getSingleton().getPathMapEntryPoints().size();
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85 | int width = entryPointCnt / 4096;
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86 | int height = 4096;
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87 | unsigned int buffersize = width * height;
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88 | float* allEntryWeights = new float[buffersize];
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89 | PixelBox lockBox(width, height, 1, PF_FLOAT32_R, allEntryWeights);
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90 | weightTexture->getBuffer()->blitToMemory(lockBox);
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91 |
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92 | int iRadion = 0;
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93 | for(int iCluster=0; iCluster < clustercount; iCluster++)
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94 | {
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95 | weights[iCluster] = 0.0;
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96 | for(int clusterSummer=0;
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97 | clusterSummer < OgreIlluminationManager::getSingleton().getPathMapClusterLength(iCluster);
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98 | clusterSummer++, iRadion++)
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99 | {
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100 | weights[iCluster] += allEntryWeights[iRadion];
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101 | }
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102 | if(weights[iCluster] <= 0)
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103 | weights[iCluster] /= OgreIlluminationManager::getSingleton().getPathMapClusterLength(iCluster); //(double)clusterLenghts[iCluster];
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104 | else
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105 | weights[iCluster] = 0.0f;
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106 | }
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107 | }
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108 |
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109 |
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