1 | #include "SceneGraph.h"
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2 | #include "KdTree.h"
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3 | #include "RssPreprocessor.h"
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4 | #include "X3dExporter.h"
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5 | #include "Environment.h"
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6 | #include "MutualVisibility.h"
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7 | #include "Polygon3.h"
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8 | #include "ViewCell.h"
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9 | #include "VssRay.h"
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10 | #include "RssTree.h"
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11 | #include "ViewCellsManager.h"
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12 | #include "RenderSimulator.h"
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13 | #include "GlRenderer.h"
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14 | #include "SamplingStrategy.h"
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15 |
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16 |
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17 | #define USE_RSS_TREE 1
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18 |
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19 | namespace GtpVisibilityPreprocessor {
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20 |
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21 |
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22 | static bool useViewSpaceBox = false;
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23 | static bool use2dSampling = false;
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24 |
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25 |
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26 | // not supported anymore!
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27 | static bool fromBoxVisibility = false;
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28 |
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29 | #define ADD_RAYS_IN_PLACE 1
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30 |
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31 | RssPreprocessor::RssPreprocessor():
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32 | mVssRays()
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33 | {
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34 | // this should increase coherence of the samples
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35 | Environment::GetSingleton()->GetIntValue("RssPreprocessor.samplesPerPass", mSamplesPerPass);
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36 | Environment::GetSingleton()->GetIntValue("RssPreprocessor.initialSamples", mInitialSamples);
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37 | Environment::GetSingleton()->GetIntValue("RssPreprocessor.vssSamples", mRssSamples);
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38 | Environment::GetSingleton()->GetIntValue("RssPreprocessor.vssSamplesPerPass", mRssSamplesPerPass);
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39 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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40 |
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41 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.Export.pvs", mExportPvs);
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42 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.Export.rssTree", mExportRssTree);
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43 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.Export.rays", mExportRays);
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44 | Environment::GetSingleton()->GetIntValue("RssPreprocessor.Export.numRays", mExportNumRays);
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45 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.useViewcells", mUseViewcells);
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46 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.objectBasedSampling", mObjectBasedSampling);
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47 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.directionalSampling", mDirectionalSampling);
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48 |
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49 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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50 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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51 | Environment::GetSingleton()->GetBoolValue("RssPreprocessor.updateSubdivision", mUpdateSubdivision);
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52 |
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53 | mStats.open("stats.log");
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54 | mRssTree = NULL;
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55 | }
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56 |
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57 |
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58 | bool
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59 | RssPreprocessor::GenerateRays(
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60 | const int number,
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61 | const int sampleType,
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62 | SimpleRayContainer &rays
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63 | )
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64 | {
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65 | bool result = false;
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66 |
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67 | Debug<<"Generate rays...\n"<<flush;
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68 |
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69 | switch (sampleType) {
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70 | case SamplingStrategy::RSS_BASED_DISTRIBUTION:
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71 | case SamplingStrategy::RSS_SILHOUETTE_BASED_DISTRIBUTION:
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72 | if (mRssTree) {
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73 | GenerateImportanceRays(mRssTree, number, rays);
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74 | result = true;
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75 | }
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76 | break;
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77 |
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78 | default:
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79 | result = Preprocessor::GenerateRays(number, sampleType, rays);
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80 | }
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81 |
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82 | // rays.NormalizePdf();
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83 | Debug<<"done.\n"<<flush;
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84 |
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85 | return result;
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86 | }
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87 |
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88 |
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89 |
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90 |
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91 | RssPreprocessor::~RssPreprocessor()
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92 | {
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93 | // mVssRays get deleted in the tree
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94 | // CLEAR_CONTAINER(mVssRays);
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95 | }
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96 |
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97 |
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98 |
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99 | void
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100 | RssPreprocessor::ExportObjectRays(VssRayContainer &rays,
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101 | const int objectId)
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102 | {
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103 | ObjectContainer::const_iterator oi;
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104 |
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105 | Intersectable *object = NULL;
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106 | for (oi = mObjects.begin(); oi != mObjects.end(); ++oi)
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107 | if (objectId == (*oi)->GetId()) {
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108 | object = *oi;
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109 | break;
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110 | }
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111 |
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112 | if (object == NULL)
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113 | return;
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114 |
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115 | VssRayContainer selectedRays;
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116 | VssRayContainer::const_iterator it= rays.begin(), it_end = rays.end();
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117 |
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118 |
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119 | for (; it != it_end; ++it) {
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120 | if ((*it)->mTerminationObject == object)
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121 | selectedRays.push_back(*it);
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122 | }
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123 |
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124 |
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125 | Exporter *exporter = Exporter::GetExporter("object-rays.x3d");
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126 | // exporter->SetWireframe();
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127 | // exporter->ExportKdTree(*mKdTree);
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128 | exporter->SetFilled();
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129 | exporter->ExportIntersectable(object);
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130 | exporter->ExportRays(selectedRays, RgbColor(1, 0, 0));
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131 |
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132 | delete exporter;
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133 |
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134 | }
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135 |
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136 |
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137 | int
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138 | RssPreprocessor::GenerateImportanceRays(RssTree *rssTree,
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139 | const int desiredSamples,
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140 | SimpleRayContainer &rays
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141 | )
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142 | {
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143 | int num;
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144 |
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145 | rssTree->UpdateTreeStatistics();
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146 |
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147 | cout<<
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148 | "#RSS_AVG_PVS_SIZE\n"<<rssTree->stat.avgPvsSize<<endl<<
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149 | "#RSS_AVG_RAYS\n"<<rssTree->stat.avgRays<<endl<<
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150 | "#RSS_AVG_RAY_CONTRIB\n"<<rssTree->stat.avgRayContribution<<endl<<
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151 | "#RSS_AVG_PVS_ENTROPY\n"<<rssTree->stat.avgPvsEntropy<<endl<<
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152 | "#RSS_AVG_RAY_LENGTH_ENTROPY\n"<<rssTree->stat.avgRayLengthEntropy<<endl<<
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153 | "#RSS_AVG_IMPORTANCE\n"<<rssTree->stat.avgImportance<<endl;
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154 |
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155 | if (0) {
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156 | float p = desiredSamples/(float)(rssTree->stat.avgRayContribution*rssTree->stat.Leaves());
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157 | num = rssTree->GenerateRays(p, rays);
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158 | } else {
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159 | int leaves = rssTree->stat.Leaves()/1;
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160 |
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161 | num = rssTree->GenerateRays(desiredSamples, leaves, rays);
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162 | }
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163 |
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164 |
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165 | return num;
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166 | }
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167 |
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168 |
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169 | bool
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170 | RssPreprocessor::ExportRays(const char *filename,
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171 | const VssRayContainer &vssRays,
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172 | const int number
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173 | )
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174 | {
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175 | cout<<"Exporting vss rays..."<<endl<<flush;
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176 |
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177 | Exporter *exporter = NULL;
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178 | exporter = Exporter::GetExporter(filename);
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179 | if (0) {
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180 | exporter->SetWireframe();
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181 | exporter->ExportKdTree(*mKdTree);
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182 | }
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183 | exporter->SetFilled();
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184 | // $$JB temporarily do not export the scene
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185 | if (0)
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186 | exporter->ExportScene(mSceneGraph->GetRoot());
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187 | exporter->SetWireframe();
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188 |
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189 | if (1) {
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190 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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191 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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192 | exporter->ResetForcedMaterial();
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193 | }
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194 |
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195 | VssRayContainer rays;
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196 |
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197 | vssRays.SelectRays(number, rays);
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198 |
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199 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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200 |
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201 | delete exporter;
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202 |
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203 | cout<<"done."<<endl<<flush;
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204 |
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205 | return true;
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206 | }
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207 |
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208 | bool
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209 | RssPreprocessor::ExportRayAnimation(const char *filename,
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210 | const vector<VssRayContainer> &vssRays
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211 | )
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212 | {
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213 | cout<<"Exporting vss rays..."<<endl<<flush;
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214 |
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215 | Exporter *exporter = NULL;
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216 | exporter = Exporter::GetExporter(filename);
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217 | if (0) {
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218 | exporter->SetWireframe();
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219 | exporter->ExportKdTree(*mKdTree);
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220 | }
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221 | exporter->SetFilled();
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222 | // $$JB temporarily do not export the scene
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223 | if (1)
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224 | exporter->ExportScene(mSceneGraph->GetRoot());
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225 | exporter->SetWireframe();
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226 |
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227 | if (1) {
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228 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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229 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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230 | exporter->ResetForcedMaterial();
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231 | }
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232 |
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233 | exporter->ExportRaySets(vssRays, RgbColor(1, 0, 0));
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234 |
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235 | delete exporter;
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236 |
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237 | cout<<"done."<<endl<<flush;
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238 |
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239 | return true;
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240 | }
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241 |
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242 |
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243 | bool
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244 | RssPreprocessor::ExportRssTree(char *filename,
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245 | RssTree *tree,
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246 | const Vector3 &dir
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247 | )
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248 | {
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249 | Exporter *exporter = Exporter::GetExporter(filename);
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250 | exporter->SetFilled();
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251 | exporter->ExportScene(mSceneGraph->GetRoot());
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252 | // exporter->SetWireframe();
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253 | bool result = exporter->ExportRssTree2( *tree, dir );
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254 | delete exporter;
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255 | return result;
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256 | }
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257 |
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258 | bool
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259 | RssPreprocessor::ExportRssTreeLeaf(char *filename,
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260 | RssTree *tree,
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261 | RssTreeLeaf *leaf)
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262 | {
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263 | Exporter *exporter = NULL;
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264 | exporter = Exporter::GetExporter(filename);
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265 | exporter->SetWireframe();
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266 | exporter->ExportKdTree(*mKdTree);
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267 |
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268 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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269 | exporter->ExportBox(tree->GetBBox(leaf));
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270 | exporter->ResetForcedMaterial();
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271 |
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272 | VssRayContainer rays[4];
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273 | for (int i=0; i < leaf->rays.size(); i++) {
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274 | int k = leaf->rays[i].GetRayClass();
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275 | rays[k].push_back(leaf->rays[i].mRay);
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276 | }
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277 |
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278 | // SOURCE RAY
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279 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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280 | // TERMINATION RAY
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281 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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282 | // PASSING_RAY
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283 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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284 | // CONTAINED_RAY
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285 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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286 |
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287 | delete exporter;
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288 | return true;
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289 | }
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290 |
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291 | void
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292 | RssPreprocessor::ExportRssTreeLeaves(RssTree *tree, const int number)
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293 | {
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294 | vector<RssTreeLeaf *> leaves;
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295 | tree->CollectLeaves(leaves);
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296 |
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297 | int num = 0;
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298 | int i;
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299 | float p = number / (float)leaves.size();
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300 | for (i=0; i < leaves.size(); i++) {
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301 | if (RandomValue(0,1) < p) {
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302 | char filename[64];
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303 | sprintf(filename, "rss-leaf-%04d.x3d", num);
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304 | ExportRssTreeLeaf(filename, tree, leaves[i]);
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305 | num++;
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306 | }
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307 | if (num >= number)
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308 | break;
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309 | }
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310 | }
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311 |
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312 |
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313 | float
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314 | RssPreprocessor::GetAvgPvsSize(RssTree *tree,
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315 | const vector<AxisAlignedBox3> &viewcells
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316 | )
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317 | {
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318 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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319 |
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320 | int sum = 0;
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321 | for (it = viewcells.begin(); it != it_end; ++ it)
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322 | sum += tree->GetPvsSize(*it);
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323 |
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324 | return sum/(float)viewcells.size();
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325 | }
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326 |
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327 |
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328 | void
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329 | RssPreprocessor::ExportPvs(char *filename,
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330 | RssTree *rssTree
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331 | )
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332 | {
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333 | ObjectContainer pvs;
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334 | if (rssTree->CollectRootPvs(pvs)) {
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335 | Exporter *exporter = Exporter::GetExporter(filename);
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336 | exporter->SetFilled();
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337 | exporter->ExportGeometry(pvs);
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338 | exporter->SetWireframe();
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339 | exporter->ExportBox(rssTree->bbox);
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340 | exporter->ExportViewpoint(rssTree->bbox.Center(), Vector3(1,0,0));
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341 | delete exporter;
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342 | }
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343 | }
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344 |
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345 |
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346 | void
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347 | RssPreprocessor::ComputeRenderError()
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348 | {
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349 | // compute rendering error
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350 |
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351 | if (renderer && renderer->mPvsStatFrames) {
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352 | // emit EvalPvsStat();
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353 | // QMutex mutex;
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354 | // mutex.lock();
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355 | // renderer->mRenderingFinished.wait(&mutex);
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356 | // mutex.unlock();
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357 |
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358 | renderer->EvalPvsStat();
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359 | mStats <<
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360 | "#AvgPvsRenderError\n" <<renderer->mPvsStat.GetAvgError()<<endl<<
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361 | "#MaxPvsRenderError\n" <<renderer->mPvsStat.GetMaxError()<<endl<<
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362 | "#ErrorFreeFrames\n" <<renderer->mPvsStat.GetErrorFreeFrames()<<endl<<
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363 | "#AvgRenderPvs\n" <<renderer->mPvsStat.GetAvgPvs()<<endl;
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364 | }
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365 | }
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366 |
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367 | void
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368 | NormalizeRatios(float ratios[4])
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369 | {
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370 | int i;
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371 | float sumRatios;
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372 | sumRatios = ratios[0] + ratios[1] + ratios[2] + ratios[3];
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373 | if (sumRatios == 0.0f) {
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374 | ratios[0] = ratios[1] = ratios[2] = 1.0f;
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375 | sumRatios = 4.0f;
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376 | }
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377 |
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378 | for (i=0 ; i < 4; i++)
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379 | ratios[i]/=sumRatios;
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380 |
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381 | #define MIN_RATIO 0.1f
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382 |
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383 | #if USE_RSS_TREE
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384 | i = 0;
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385 | #else
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386 | i = 1;
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387 | #endif
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388 |
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389 | for (; i < 4; i++)
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390 | if (ratios[i] < MIN_RATIO)
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391 | ratios[i] = MIN_RATIO;
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392 |
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393 | sumRatios = ratios[0] + ratios[1] + ratios[2] + ratios[3];
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394 | for (i=0 ; i < 4; i++)
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395 | ratios[i]/=sumRatios;
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396 |
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397 | }
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398 |
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399 | bool
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400 | RssPreprocessor::ComputeVisibility()
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401 | {
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402 |
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403 | Debug << "type: rss" << endl;
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404 |
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405 | cout<<"Rss Preprocessor started\n"<<flush;
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406 | // cout<<"Memory/ray "<<sizeof(VssRay)+sizeof(RssTreeNode::RayInfo)<<endl;
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407 |
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408 | Randomize(0);
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409 |
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410 | const bool useRayBuffer = false;
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411 |
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412 | vector<VssRayContainer> rayBuffer(50);
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413 |
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414 | long startTime = GetTime();
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415 | long lastTime;
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416 | float totalTime;
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417 |
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418 | int totalSamples = 0;
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419 |
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420 | // if not already loaded, construct view cells from file
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421 | if (!mLoadViewCells)
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422 | {
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423 | // construct view cells using it's own set of samples
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424 | mViewCellsManager->Construct(this);
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425 |
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426 | //-- several visualizations and statistics
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427 | Debug << "view cells construction finished: " << endl;
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428 | mViewCellsManager->PrintStatistics(Debug);
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429 | }
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430 |
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431 |
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432 | int rssPass = 0;
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433 | int rssSamples = 0;
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434 |
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435 | mDistributions.push_back(SamplingDistribution(SamplingStrategy::RSS_BASED_DISTRIBUTION));
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436 | mDistributions.push_back(SamplingDistribution(SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION));
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437 | mDistributions.push_back(SamplingDistribution(SamplingStrategy::DIRECTION_BASED_DISTRIBUTION));
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438 | mDistributions.push_back(SamplingDistribution(SamplingStrategy::REVERSE_OBJECT_BASED_DISTRIBUTION));
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439 |
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440 | if (mLoadInitialSamples) {
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441 | cout << "Loading samples from file ... ";
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442 | LoadSamples(mVssRays, mObjects);
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443 | cout << "finished\n" << endl;
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444 | } else {
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445 | SimpleRayContainer rays;
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446 |
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447 | cout<<"Generating initial rays..."<<endl<<flush;
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448 |
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449 | if (mUseImportanceSampling) {
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450 | GenerateRays(mInitialSamples/3, SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION, rays);
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451 | // GenerateRays(mInitialSamples/3, SamplingStrategy::OBJECT_BASED_DISTRIBUTION, rays);
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452 | GenerateRays(mInitialSamples/3, SamplingStrategy::DIRECTION_BASED_DISTRIBUTION, rays);
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453 | GenerateRays(mInitialSamples/3, SamplingStrategy::REVERSE_OBJECT_BASED_DISTRIBUTION, rays);
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454 | // GenerateRays(mInitialSamples/4, OBJECT_DIRECTION_BASED_DISTRIBUTION, rays);
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455 |
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456 |
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457 | } else {
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458 | int rayType = SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION;
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459 | if (mObjectBasedSampling)
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460 | rayType = SamplingStrategy::OBJECT_BASED_DISTRIBUTION;
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461 | else
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462 | if (mDirectionalSampling)
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463 | rayType = SamplingStrategy::DIRECTION_BASED_DISTRIBUTION;
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464 | cout<<"Generating rays..."<<endl;
|
---|
465 | GenerateRays(mRssSamplesPerPass, rayType, rays);
|
---|
466 | }
|
---|
467 |
|
---|
468 |
|
---|
469 | cout<<"Casting initial rays..."<<endl<<flush;
|
---|
470 | CastRays(rays, mVssRays, true);
|
---|
471 |
|
---|
472 | ExportObjectRays(mVssRays, 1546);
|
---|
473 | }
|
---|
474 |
|
---|
475 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl <<flush;
|
---|
476 |
|
---|
477 | rssSamples += (int)mVssRays.size();
|
---|
478 | totalSamples += mInitialSamples;
|
---|
479 | mPass++;
|
---|
480 |
|
---|
481 | if (mExportRays) {
|
---|
482 |
|
---|
483 | char filename[64];
|
---|
484 | sprintf(filename, "rss-rays-initial.x3d");
|
---|
485 | ExportRays(filename, mVssRays, mExportNumRays);
|
---|
486 |
|
---|
487 | if (useRayBuffer)
|
---|
488 | mVssRays.SelectRays(mExportNumRays, rayBuffer[0], true);
|
---|
489 |
|
---|
490 | }
|
---|
491 |
|
---|
492 | if (mStoreInitialSamples) {
|
---|
493 | cout << "Writing samples to file ... ";
|
---|
494 | ExportSamples(mVssRays);
|
---|
495 | cout << "finished\n" << endl;
|
---|
496 | }
|
---|
497 |
|
---|
498 | if (mUseViewcells) {
|
---|
499 |
|
---|
500 | cout<<"Computing sample contributions..."<<endl<<flush;
|
---|
501 | // evaluate contributions of the intitial rays
|
---|
502 | mViewCellsManager->ComputeSampleContributions(mVssRays, true, false);
|
---|
503 | cout<<"done.\n"<<flush;
|
---|
504 |
|
---|
505 | long time = GetTime();
|
---|
506 | totalTime = TimeDiff(startTime, time)*1e-3f;
|
---|
507 | lastTime = time;
|
---|
508 |
|
---|
509 | mStats <<
|
---|
510 | "#Pass\n" <<mPass<<endl<<
|
---|
511 | "#RssPass\n" <<rssPass<<endl<<
|
---|
512 | "#Time\n" << totalTime <<endl<<
|
---|
513 | "#TotalSamples\n" <<totalSamples<<endl<<
|
---|
514 | "#RssSamples\n" <<rssSamples<<endl;
|
---|
515 |
|
---|
516 | {
|
---|
517 | VssRayContainer contributingRays;
|
---|
518 | mVssRays.GetContributingRays(contributingRays, 0);
|
---|
519 | mStats<<"#NUM_CONTRIBUTING_RAYS\n"<<(int)contributingRays.size()<<endl;
|
---|
520 | if (mExportRays) {
|
---|
521 | char filename[64];
|
---|
522 | sprintf(filename, "rss-crays-%04d.x3d", 0);
|
---|
523 | ExportRays(filename, contributingRays, mExportNumRays);
|
---|
524 | }
|
---|
525 | }
|
---|
526 |
|
---|
527 | mVssRays.PrintStatistics(mStats);
|
---|
528 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
529 |
|
---|
530 | // viewcells->UpdatePVS(newVssRays);
|
---|
531 | Debug<<"Valid viewcells before set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
532 | // cull viewcells with PVS > median (0.5f)
|
---|
533 | //mViewCellsManager->SetValidityPercentage(0, 0.5f);
|
---|
534 | mViewCellsManager->SetValidityPercentage(0, 1.0f);
|
---|
535 | Debug<<"Valid viewcells after set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
536 |
|
---|
537 | ComputeRenderError();
|
---|
538 | }
|
---|
539 |
|
---|
540 | rssPass++;
|
---|
541 |
|
---|
542 | mRssTree = new RssTree;
|
---|
543 | mRssTree->SetPass(mPass);
|
---|
544 |
|
---|
545 | /// compute view cell contribution of rays if view cells manager already constructed
|
---|
546 | // mViewCellsManager->ComputeSampleContributions(mVssRays, true, false);
|
---|
547 |
|
---|
548 | if (mUseImportanceSampling) {
|
---|
549 |
|
---|
550 | #if USE_RSS_TREE
|
---|
551 | mRssTree->Construct(mObjects, mVssRays);
|
---|
552 | #endif
|
---|
553 |
|
---|
554 | mRssTree->stat.Print(mStats);
|
---|
555 | cout<<"RssTree root PVS size = "<<mRssTree->GetRootPvsSize()<<endl;
|
---|
556 |
|
---|
557 | if (mExportRssTree) {
|
---|
558 | ExportRssTree("rss-tree-100.x3d", mRssTree, Vector3(1,0,0));
|
---|
559 | ExportRssTree("rss-tree-001.x3d", mRssTree, Vector3(0,0,1));
|
---|
560 | ExportRssTree("rss-tree-101.x3d", mRssTree, Vector3(1,0,1));
|
---|
561 | ExportRssTree("rss-tree-101m.x3d", mRssTree, Vector3(-1,0,-1));
|
---|
562 | ExportRssTreeLeaves(mRssTree, 10);
|
---|
563 | }
|
---|
564 |
|
---|
565 | if (mExportPvs) {
|
---|
566 | ExportPvs("rss-pvs-initial.x3d", mRssTree);
|
---|
567 | }
|
---|
568 | }
|
---|
569 |
|
---|
570 |
|
---|
571 |
|
---|
572 | while (1) {
|
---|
573 |
|
---|
574 | static SimpleRayContainer rays;
|
---|
575 | static VssRayContainer vssRays;
|
---|
576 | static VssRayContainer tmpVssRays;
|
---|
577 |
|
---|
578 | rays.reserve((int)(1.1f*mRssSamplesPerPass));
|
---|
579 |
|
---|
580 | rays.clear();
|
---|
581 | vssRays.clear();
|
---|
582 | tmpVssRays.clear();
|
---|
583 |
|
---|
584 | int castRays = 0;
|
---|
585 | if (mUseImportanceSampling) {
|
---|
586 |
|
---|
587 | #if USE_RSS_TREE
|
---|
588 | static float ratios[] = {0.9f,0.05f,0.05f,0.05f};
|
---|
589 | #else
|
---|
590 | static float ratios[] = {0.0f,0.05f,0.05f,0.05f};
|
---|
591 | #endif
|
---|
592 | NormalizeRatios(ratios);
|
---|
593 |
|
---|
594 | cout<<"New ratios: "<<ratios[0]<<" "<<ratios[1]<<" "<<ratios[2]<<" "<<ratios[3]<<endl;
|
---|
595 |
|
---|
596 | //float ratios[] = {1.0f,0.0f,0.0f};
|
---|
597 |
|
---|
598 | int nrays[4];
|
---|
599 | float contributions[4];
|
---|
600 | float times[4];
|
---|
601 |
|
---|
602 | long t1;
|
---|
603 |
|
---|
604 | t1 = GetTime();
|
---|
605 |
|
---|
606 | GenerateRays(int(mRssSamplesPerPass*ratios[0]),
|
---|
607 | SamplingStrategy::RSS_BASED_DISTRIBUTION,
|
---|
608 | rays);
|
---|
609 |
|
---|
610 | rays.NormalizePdf((float)rays.size());
|
---|
611 |
|
---|
612 | CastRays(rays, tmpVssRays, true);
|
---|
613 | castRays += (int)rays.size();
|
---|
614 | #if ADD_RAYS_IN_PLACE
|
---|
615 | contributions[0] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, true, false);
|
---|
616 | #else
|
---|
617 | contributions[0] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
618 | #endif
|
---|
619 | times[0] = TimeDiff(t1, GetTime());
|
---|
620 | nrays[0] = (int)rays.size();
|
---|
621 |
|
---|
622 | mStats<<"#RssRelContrib"<<endl<<contributions[0]/nrays[0]<<endl;
|
---|
623 |
|
---|
624 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
625 | rays.clear();
|
---|
626 | tmpVssRays.clear();
|
---|
627 | if (ratios[1]!=0.0f) {
|
---|
628 | t1 = GetTime();
|
---|
629 | GenerateRays(int(mRssSamplesPerPass*ratios[1]), SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION, rays);
|
---|
630 | CastRays(rays, tmpVssRays, true);
|
---|
631 | castRays += (int)rays.size();
|
---|
632 | #if ADD_RAYS_IN_PLACE
|
---|
633 | contributions[1] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, true, false);
|
---|
634 | #else
|
---|
635 | contributions[1] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
636 | #endif
|
---|
637 | times[1] = TimeDiff(t1, GetTime());
|
---|
638 | nrays[1] = (int)rays.size();
|
---|
639 |
|
---|
640 | mStats<<"#SpatialRelContrib"<<endl<<contributions[1]/nrays[1]<<endl;
|
---|
641 |
|
---|
642 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
643 |
|
---|
644 | rays.clear();
|
---|
645 | tmpVssRays.clear();
|
---|
646 | }
|
---|
647 |
|
---|
648 |
|
---|
649 | if (ratios[2]!=0.0f) {
|
---|
650 | t1 = GetTime();
|
---|
651 | GenerateRays(int(mRssSamplesPerPass*ratios[2]), SamplingStrategy::DIRECTION_BASED_DISTRIBUTION, rays);
|
---|
652 | CastRays(rays, tmpVssRays, true);
|
---|
653 | castRays += (int)rays.size();
|
---|
654 | #if ADD_RAYS_IN_PLACE
|
---|
655 | contributions[2] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, true, false);
|
---|
656 | #else
|
---|
657 | contributions[2] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
658 | #endif
|
---|
659 | times[2] = TimeDiff(t1, GetTime());
|
---|
660 | nrays[2] = (int)rays.size();
|
---|
661 |
|
---|
662 | mStats<<"#DirectionalRelContrib"<<endl<<contributions[2]/nrays[2]<<endl;
|
---|
663 |
|
---|
664 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
665 |
|
---|
666 | rays.clear();
|
---|
667 | tmpVssRays.clear();
|
---|
668 | }
|
---|
669 |
|
---|
670 | if (ratios[3]!=0.0f) {
|
---|
671 | t1 = GetTime();
|
---|
672 | GenerateRays(int(mRssSamplesPerPass*ratios[3]),
|
---|
673 | SamplingStrategy::REVERSE_OBJECT_BASED_DISTRIBUTION, rays);
|
---|
674 | CastRays(rays, tmpVssRays, true);
|
---|
675 | castRays += (int)rays.size();
|
---|
676 | #if ADD_RAYS_IN_PLACE
|
---|
677 | contributions[3] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, true, false);
|
---|
678 | #else
|
---|
679 | contributions[3] = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
680 | #endif
|
---|
681 | times[3] = TimeDiff(t1, GetTime());
|
---|
682 | nrays[3] = (int)rays.size();
|
---|
683 |
|
---|
684 | mStats<<"#DirectionalRelContrib"<<endl<<contributions[3]/nrays[3]<<endl;
|
---|
685 |
|
---|
686 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
687 |
|
---|
688 | rays.clear();
|
---|
689 | tmpVssRays.clear();
|
---|
690 | }
|
---|
691 |
|
---|
692 |
|
---|
693 | // now evaluate the ratios for the next pass
|
---|
694 | #define TIME_WEIGHT 0.5f
|
---|
695 |
|
---|
696 | #if 1
|
---|
697 | ratios[0] = sqr(contributions[0]/(TIME_WEIGHT*times[0] + (1 - TIME_WEIGHT)*nrays[0]));
|
---|
698 | ratios[1] = sqr(contributions[1]/(TIME_WEIGHT*times[1] + (1 - TIME_WEIGHT)*nrays[1]));
|
---|
699 | ratios[2] = sqr(contributions[2]/(TIME_WEIGHT*times[2] + (1 - TIME_WEIGHT)*nrays[2]));
|
---|
700 | ratios[3] = sqr(contributions[3]/(TIME_WEIGHT*times[3] + (1 - TIME_WEIGHT)*nrays[3]));
|
---|
701 | #else
|
---|
702 | ratios[0] = contributions[0]/(TIME_WEIGHT*times[0] + (1 - TIME_WEIGHT)*nrays[0]);
|
---|
703 | ratios[1] = contributions[1]/(TIME_WEIGHT*times[1] + (1 - TIME_WEIGHT)*nrays[1]);
|
---|
704 | ratios[2] = contributions[2]/(TIME_WEIGHT*times[2] + (1 - TIME_WEIGHT)*nrays[2]);
|
---|
705 | ratios[3] = contributions[3]/(TIME_WEIGHT*times[3] + (1 - TIME_WEIGHT)*nrays[3]);
|
---|
706 |
|
---|
707 | #endif
|
---|
708 |
|
---|
709 | #if !USE_RSS_TREE
|
---|
710 | ratios[0] = 0;
|
---|
711 | #endif
|
---|
712 |
|
---|
713 | // add contributions of all rays at once...
|
---|
714 | #if !ADD_RAYS_IN_PLACE
|
---|
715 | mViewCellsManager->AddSampleContributions(vssRays);
|
---|
716 | #endif
|
---|
717 | }
|
---|
718 | else {
|
---|
719 | int rayType = SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION;
|
---|
720 | if (mObjectBasedSampling)
|
---|
721 | rayType = SamplingStrategy::OBJECT_BASED_DISTRIBUTION;
|
---|
722 | else
|
---|
723 | if (mDirectionalSampling)
|
---|
724 | rayType = SamplingStrategy::DIRECTION_BASED_DISTRIBUTION;
|
---|
725 |
|
---|
726 | cout<<"Generating rays..."<<endl;
|
---|
727 |
|
---|
728 | GenerateRays(mRssSamplesPerPass, rayType, rays);
|
---|
729 | cout<<"done."<<endl;
|
---|
730 |
|
---|
731 | cout<<"Casting rays..."<<endl; CastRays(rays, vssRays, true);
|
---|
732 | cout<<"done."<<endl;
|
---|
733 | castRays += (int)rays.size();
|
---|
734 | if (mUseViewcells) {
|
---|
735 | /// compute view cell contribution of rays
|
---|
736 | cout<<"Computing sample contributions..."<<endl;
|
---|
737 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
738 | cout<<"done."<<endl;
|
---|
739 | }
|
---|
740 |
|
---|
741 |
|
---|
742 | }
|
---|
743 | totalSamples += castRays;
|
---|
744 | rssSamples += (int)vssRays.size();
|
---|
745 |
|
---|
746 | cout<<"Generated "<<castRays<<" rays, progress "<<100.0f*totalSamples/((float) mRssSamples +
|
---|
747 | mInitialSamples)<<"%\n";
|
---|
748 |
|
---|
749 |
|
---|
750 | long time = GetTime();
|
---|
751 | totalTime += TimeDiff(lastTime, time);
|
---|
752 | lastTime = time;
|
---|
753 |
|
---|
754 | mStats <<
|
---|
755 | "#Pass\n" <<mPass<<endl<<
|
---|
756 | "#RssPass\n" <<rssPass<<endl<<
|
---|
757 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3<<endl<<
|
---|
758 | "#TotalSamples\n" <<totalSamples<<endl<<
|
---|
759 | "#RssSamples\n" <<rssSamples<<endl;
|
---|
760 |
|
---|
761 |
|
---|
762 | if (mUseViewcells) {
|
---|
763 | Debug<<"Print statistics...\n"<<flush;
|
---|
764 | vssRays.PrintStatistics(mStats);
|
---|
765 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
766 | Debug<<"done.\n"<<flush;
|
---|
767 | }
|
---|
768 |
|
---|
769 | if (0 && mPass > 0) {
|
---|
770 | char buf[100];
|
---|
771 | if (mUseImportanceSampling)
|
---|
772 | {
|
---|
773 | sprintf(buf, "snap/i-%02d-", mPass);
|
---|
774 |
|
---|
775 | renderer->SetSnapPrefix(buf);
|
---|
776 | }
|
---|
777 | else
|
---|
778 | {
|
---|
779 | sprintf(buf, "snap/r-%02d-", mPass);
|
---|
780 |
|
---|
781 | renderer->SetSnapPrefix(buf);
|
---|
782 | }
|
---|
783 |
|
---|
784 | renderer->SetSnapErrorFrames(true);
|
---|
785 | }
|
---|
786 |
|
---|
787 | ComputeRenderError();
|
---|
788 |
|
---|
789 | // epxort rays before adding them to the tree -> some of them can be deleted
|
---|
790 |
|
---|
791 | if (mExportRays) {
|
---|
792 | char filename[64];
|
---|
793 | if (mUseImportanceSampling)
|
---|
794 | sprintf(filename, "rss-rays-i%04d.x3d", rssPass);
|
---|
795 | else
|
---|
796 | sprintf(filename, "rss-rays-%04d.x3d", rssPass);
|
---|
797 |
|
---|
798 |
|
---|
799 |
|
---|
800 | if (useRayBuffer)
|
---|
801 | vssRays.SelectRays(mExportNumRays, rayBuffer[mPass], true);
|
---|
802 |
|
---|
803 | ExportRays(filename, vssRays, mExportNumRays);
|
---|
804 |
|
---|
805 | // now export all contributing rays
|
---|
806 | VssRayContainer contributingRays;
|
---|
807 | vssRays.GetContributingRays(contributingRays, mPass);
|
---|
808 | mStats<<"#NUM_CONTRIBUTING_RAYS\n"<<(int)contributingRays.size()<<endl;
|
---|
809 | sprintf(filename, "rss-crays-%04d.x3d", rssPass);
|
---|
810 | ExportRays(filename, contributingRays, mExportNumRays);
|
---|
811 |
|
---|
812 | }
|
---|
813 |
|
---|
814 |
|
---|
815 | // add rays to the tree after the viewcells have been cast to have their contributions
|
---|
816 | // already when adding into the tree
|
---|
817 | // do not add those rays which have too low or no contribution....
|
---|
818 |
|
---|
819 | #if USE_RSS_TREE
|
---|
820 | if (mUseImportanceSampling) {
|
---|
821 | Debug<<"Adding rays...\n"<<flush;
|
---|
822 | mRssTree->AddRays(vssRays);
|
---|
823 | Debug<<"done.\n"<<flush;
|
---|
824 | if (mUpdateSubdivision) {
|
---|
825 | int updatePasses = 1;
|
---|
826 | if (mPass % updatePasses == 0) {
|
---|
827 | Debug<<"Updating rss tree...\n"<<flush;
|
---|
828 | int subdivided = mRssTree->UpdateSubdivision();
|
---|
829 | Debug<<"done.\n"<<flush;
|
---|
830 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
831 | cout<<"#total leaves = "<<mRssTree->stat.Leaves()<<endl;
|
---|
832 | }
|
---|
833 | }
|
---|
834 | }
|
---|
835 | #endif
|
---|
836 |
|
---|
837 | if (mExportPvs) {
|
---|
838 | char filename[64];
|
---|
839 | sprintf(filename, "rss-pvs-%04d.x3d", rssPass);
|
---|
840 | ExportPvs(filename, mRssTree);
|
---|
841 | }
|
---|
842 |
|
---|
843 |
|
---|
844 | if (!mUseImportanceSampling)
|
---|
845 | CLEAR_CONTAINER(vssRays);
|
---|
846 | // otherwise the rays get deleted by the rss tree update according to RssTree.maxRays ....
|
---|
847 |
|
---|
848 | if (totalSamples >= mRssSamples + mInitialSamples)
|
---|
849 | break;
|
---|
850 |
|
---|
851 |
|
---|
852 | rssPass++;
|
---|
853 | mPass++;
|
---|
854 | mRssTree->SetPass(mPass);
|
---|
855 |
|
---|
856 |
|
---|
857 | }
|
---|
858 |
|
---|
859 | if (mUseViewcells) {
|
---|
860 |
|
---|
861 | if(0)
|
---|
862 | {
|
---|
863 | VssRayContainer selectedRays;
|
---|
864 | int desired = mViewCellsManager->GetVisualizationSamples();
|
---|
865 |
|
---|
866 | mVssRays.SelectRays(desired, selectedRays);
|
---|
867 |
|
---|
868 | mViewCellsManager->Visualize(mObjects, selectedRays);
|
---|
869 | }
|
---|
870 |
|
---|
871 | // view cells after sampling
|
---|
872 | mViewCellsManager->PrintStatistics(Debug);
|
---|
873 |
|
---|
874 | //-- render simulation after merge
|
---|
875 | cout << "\nevaluating bsp view cells render time after sampling ... ";
|
---|
876 |
|
---|
877 | mRenderSimulator->RenderScene();
|
---|
878 | SimulationStatistics ss;
|
---|
879 | mRenderSimulator->GetStatistics(ss);
|
---|
880 |
|
---|
881 | cout << " finished" << endl;
|
---|
882 | cout << ss << endl;
|
---|
883 | Debug << ss << endl;
|
---|
884 |
|
---|
885 | }
|
---|
886 |
|
---|
887 |
|
---|
888 | if (useRayBuffer&& mExportRays && mUseImportanceSampling) {
|
---|
889 | char filename[64];
|
---|
890 | sprintf(filename, "rss-rays-i.x3d");
|
---|
891 |
|
---|
892 | rayBuffer.resize(mPass);
|
---|
893 | ExportRayAnimation(filename, rayBuffer);
|
---|
894 | }
|
---|
895 |
|
---|
896 |
|
---|
897 | // do not delete rss tree now - can be used for visualization..
|
---|
898 | #if 0
|
---|
899 | Debug<<"Deleting RSS tree...\n";
|
---|
900 | delete mRssTree;
|
---|
901 | Debug<<"Done.\n";
|
---|
902 | #endif
|
---|
903 |
|
---|
904 | //mViewCellsManager->ExportViewCells("visibility.xml",
|
---|
905 | // true);
|
---|
906 |
|
---|
907 |
|
---|
908 | return true;
|
---|
909 | }
|
---|
910 |
|
---|
911 | }
|
---|