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 |
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15 | static bool useViewSpaceBox = false;
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16 | static bool use2dSampling = false;
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17 |
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18 |
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19 | // not supported anymore!
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20 | static bool fromBoxVisibility = false;
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21 |
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22 |
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23 | RssPreprocessor::RssPreprocessor():
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24 | mPass(0),
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25 | mVssRays()
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26 | {
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27 | // this should increase coherence of the samples
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28 | environment->GetIntValue("RssPreprocessor.samplesPerPass", mSamplesPerPass);
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29 | environment->GetIntValue("RssPreprocessor.initialSamples", mInitialSamples);
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30 | environment->GetIntValue("RssPreprocessor.vssSamples", mRssSamples);
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31 | environment->GetIntValue("RssPreprocessor.vssSamplesPerPass", mRssSamplesPerPass);
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32 | environment->GetBoolValue("RssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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33 |
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34 | environment->GetBoolValue("RssPreprocessor.Export.pvs", mExportPvs);
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35 | environment->GetBoolValue("RssPreprocessor.Export.rssTree", mExportRssTree);
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36 | environment->GetBoolValue("RssPreprocessor.Export.rays", mExportRays);
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37 | environment->GetIntValue("RssPreprocessor.Export.numRays", mExportNumRays);
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38 | environment->GetBoolValue("RssPreprocessor.useViewcells", mUseViewcells);
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39 | environment->GetBoolValue("RssPreprocessor.objectBasedSampling", mObjectBasedSampling);
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40 | environment->GetBoolValue("RssPreprocessor.directionalSampling", mDirectionalSampling);
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41 |
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42 | environment->GetBoolValue("RssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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43 | environment->GetBoolValue("RssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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44 | environment->GetBoolValue("RssPreprocessor.updateSubdivision", mUpdateSubdivision);
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45 |
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46 | mStats.open("stats.log");
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47 | mRssTree = NULL;
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48 | }
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49 |
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50 |
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51 | bool
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52 | RssPreprocessor::GenerateRays(
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53 | const int number,
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54 | const int sampleType,
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55 | SimpleRayContainer &rays
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56 | )
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57 | {
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58 | bool result = false;
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59 |
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60 | switch (sampleType) {
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61 | case RSS_BASED_DISTRIBUTION:
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62 | case RSS_SILHOUETTE_BASED_DISTRIBUTION:
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63 | if (mRssTree) {
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64 | GenerateImportanceRays(mRssTree, number, rays);
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65 | result = true;
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66 | // rays.NormalizePdf();
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67 | }
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68 | break;
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69 |
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70 | default:
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71 | result = Preprocessor::GenerateRays(number, sampleType, rays);
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72 | }
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73 |
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74 | return result;
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75 | }
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76 |
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77 | void
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78 | RssPreprocessor::CastRays(
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79 | SimpleRayContainer &rays,
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80 | VssRayContainer &vssRays
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81 | )
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82 | {
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83 | for (int i=0; i < rays.size(); i++) {
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84 | CastRay(rays[i].mOrigin, rays[i].mDirection, rays[i].mPdf, vssRays);
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85 | if (i % 10000 == 0)
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86 | cout<<".";
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87 | }
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88 | cout<<endl;
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89 | }
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90 |
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91 |
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92 | RssPreprocessor::~RssPreprocessor()
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93 | {
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94 | // mVssRays get deleted in the tree
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95 | // CLEAR_CONTAINER(mVssRays);
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96 | }
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97 |
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98 | void
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99 | RssPreprocessor::SetupRay(Ray &ray,
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100 | const Vector3 &point,
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101 | const Vector3 &direction
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102 | )
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103 | {
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104 | ray.intersections.clear();
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105 | // do not store anything else then intersections at the ray
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106 | ray.Init(point, direction, Ray::LOCAL_RAY);
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107 | }
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108 |
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109 | int
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110 | RssPreprocessor::CastRay(
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111 | Vector3 &viewPoint,
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112 | Vector3 &direction,
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113 | const float probability,
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114 | VssRayContainer &vssRays
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115 | )
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116 | {
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117 | int hits = 0;
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118 | static Ray ray;
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119 | AxisAlignedBox3 box = mKdTree->GetBox();
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120 |
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121 | AxisAlignedBox3 sbox = box;
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122 | sbox.Enlarge(Vector3(-Limits::Small));
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123 | if (!sbox.IsInside(viewPoint))
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124 | return 0;
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125 |
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126 | SetupRay(ray, viewPoint, direction);
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127 |
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128 | if (!mDetectEmptyViewSpace)
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129 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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130 | else
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131 | ray.mFlags |= Ray::CULL_BACKFACES;
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132 |
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133 |
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134 | // cast ray to KD tree to find intersection with other objects
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135 | Intersectable *objectA, *objectB;
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136 | Vector3 pointA, pointB;
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137 | float bsize = Magnitude(box.Size());
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138 |
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139 |
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140 | if (mKdTree->CastRay(ray)) {
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141 | objectA = ray.intersections[0].mObject;
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142 | pointA = ray.Extrap(ray.intersections[0].mT);
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143 | } else {
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144 | objectA = NULL;
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145 | // compute intersection with the scene bounding box
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146 | float tmin, tmax;
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147 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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148 | pointA = ray.Extrap(tmax);
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149 | else
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150 | return 0;
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151 | }
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152 |
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153 |
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154 | if (mDetectEmptyViewSpace) {
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155 | SetupRay(ray, pointA, -direction);
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156 | } else
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157 | SetupRay(ray, viewPoint, -direction);
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158 |
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159 | if (!mDetectEmptyViewSpace)
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160 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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161 | else
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162 | ray.mFlags |= Ray::CULL_BACKFACES;
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163 |
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164 | if (mKdTree->CastRay(ray)) {
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165 | objectB = ray.intersections[0].mObject;
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166 | pointB = ray.Extrap(ray.intersections[0].mT);
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167 | } else {
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168 | objectB = NULL;
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169 | float tmin, tmax;
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170 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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171 | pointB = ray.Extrap(tmax);
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172 | else
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173 | return 0;
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174 | }
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175 |
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176 | // if (objectA == NULL && objectB != NULL) {
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177 | if (mDetectEmptyViewSpace) {
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178 | // cast again to ensure that there is no objectA
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179 | SetupRay(ray, pointB, direction);
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180 | ray.mFlags |= Ray::CULL_BACKFACES;
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181 | if (mKdTree->CastRay(ray)) {
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182 | objectA = ray.intersections[0].mObject;
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183 | pointA = ray.Extrap(ray.intersections[0].mT);
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184 | }
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185 | }
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186 |
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187 |
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188 | VssRay *vssRay = NULL;
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189 |
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190 | bool validSample = (objectA != objectB);
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191 | if (validSample) {
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192 | if (objectA) {
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193 | vssRay = new VssRay(pointB,
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194 | pointA,
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195 | objectB,
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196 | objectA,
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197 | mPass,
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198 | probability
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199 | );
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200 | vssRays.push_back(vssRay);
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201 | hits ++;
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202 |
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203 | }
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204 |
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205 | if (objectB) {
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206 | vssRay = new VssRay(pointA,
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207 | pointB,
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208 | objectA,
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209 | objectB,
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210 | mPass,
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211 | probability
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212 | );
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213 | vssRays.push_back(vssRay);
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214 | hits ++;
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215 | }
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216 | }
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217 |
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218 | return hits;
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219 | }
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220 |
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221 |
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222 | void
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223 | RssPreprocessor::ExportObjectRays(VssRayContainer &rays,
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224 | const int objectId)
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225 | {
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226 | ObjectContainer::const_iterator oi;
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227 |
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228 | Intersectable *object = NULL;
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229 | for (oi = mObjects.begin(); oi != mObjects.end(); ++oi)
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230 | if (objectId == (*oi)->GetId()) {
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231 | object = *oi;
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232 | break;
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233 | }
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234 |
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235 | if (object == NULL)
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236 | return;
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237 |
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238 | VssRayContainer selectedRays;
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239 | VssRayContainer::const_iterator it= rays.begin(), it_end = rays.end();
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240 |
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241 |
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242 | for (; it != it_end; ++it) {
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243 | if ((*it)->mTerminationObject == object)
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244 | selectedRays.push_back(*it);
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245 | }
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246 |
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247 |
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248 | Exporter *exporter = Exporter::GetExporter("object-rays.x3d");
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249 | // exporter->SetWireframe();
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250 | // exporter->ExportKdTree(*mKdTree);
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251 | exporter->SetFilled();
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252 | exporter->ExportIntersectable(object);
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253 | exporter->ExportRays(selectedRays, RgbColor(1, 0, 0));
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254 |
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255 | delete exporter;
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256 |
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257 | }
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258 |
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259 |
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260 | int
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261 | RssPreprocessor::GenerateImportanceRays(RssTree *rssTree,
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262 | const int desiredSamples,
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263 | SimpleRayContainer &rays
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264 | )
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265 | {
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266 | int num;
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267 |
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268 | rssTree->UpdateTreeStatistics();
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269 |
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270 | cout<<
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271 | "#RSS_AVG_PVS_SIZE\n"<<rssTree->stat.avgPvsSize<<endl<<
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272 | "#RSS_AVG_RAYS\n"<<rssTree->stat.avgRays<<endl<<
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273 | "#RSS_AVG_RAY_CONTRIB\n"<<rssTree->stat.avgRayContribution<<endl<<
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274 | "#RSS_AVG_PVS_ENTROPY\n"<<rssTree->stat.avgPvsEntropy<<endl<<
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275 | "#RSS_AVG_RAY_LENGTH_ENTROPY\n"<<rssTree->stat.avgRayLengthEntropy<<endl<<
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276 | "#RSS_AVG_IMPORTANCE\n"<<rssTree->stat.avgImportance<<endl;
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277 |
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278 | if (0) {
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279 | float p = desiredSamples/(float)(rssTree->stat.avgRayContribution*rssTree->stat.Leaves());
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280 | num = rssTree->GenerateRays(p, rays);
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281 | } else {
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282 | int leaves = rssTree->stat.Leaves()/1;
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283 | num = rssTree->GenerateRays(desiredSamples, leaves, rays);
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284 | }
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285 |
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286 |
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287 | return num;
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288 | }
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289 |
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290 |
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291 | bool
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292 | RssPreprocessor::ExportRays(const char *filename,
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293 | const VssRayContainer &vssRays,
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294 | const int number
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295 | )
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296 | {
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297 | cout<<"Exporting vss rays..."<<endl<<flush;
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298 |
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299 | Exporter *exporter = NULL;
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300 | exporter = Exporter::GetExporter(filename);
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301 | // exporter->SetWireframe();
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302 | // exporter->ExportKdTree(*mKdTree);
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303 | exporter->SetFilled();
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304 | // $$JB temporarily do not export the scene
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305 | if (0)
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306 | exporter->ExportScene(mSceneGraph->mRoot);
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307 | exporter->SetWireframe();
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308 |
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309 | if (mViewSpaceBox) {
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310 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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311 | exporter->ExportBox(*mViewSpaceBox);
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312 | exporter->ResetForcedMaterial();
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313 | }
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314 |
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315 | VssRayContainer rays;
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316 |
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317 | vssRays.SelectRays( number, rays);
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318 |
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319 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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320 |
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321 | delete exporter;
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322 |
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323 | cout<<"done."<<endl<<flush;
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324 |
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325 | return true;
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326 | }
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327 |
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328 |
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329 | bool
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330 | RssPreprocessor::ExportRssTree(char *filename,
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331 | RssTree *tree,
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332 | const Vector3 &dir
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333 | )
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334 | {
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335 | Exporter *exporter = Exporter::GetExporter(filename);
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336 | exporter->SetFilled();
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337 | exporter->ExportScene(mSceneGraph->mRoot);
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338 | // exporter->SetWireframe();
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339 | bool result = exporter->ExportRssTree2( *tree, dir );
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340 | delete exporter;
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341 | return result;
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342 | }
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343 |
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344 | bool
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345 | RssPreprocessor::ExportRssTreeLeaf(char *filename,
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346 | RssTree *tree,
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347 | RssTreeLeaf *leaf)
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348 | {
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349 | Exporter *exporter = NULL;
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350 | exporter = Exporter::GetExporter(filename);
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351 | exporter->SetWireframe();
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352 | exporter->ExportKdTree(*mKdTree);
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353 |
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354 | if (mViewSpaceBox) {
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355 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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356 | exporter->ExportBox(*mViewSpaceBox);
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357 | exporter->ResetForcedMaterial();
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358 | }
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359 |
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360 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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361 | exporter->ExportBox(tree->GetBBox(leaf));
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362 | exporter->ResetForcedMaterial();
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363 |
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364 | VssRayContainer rays[4];
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365 | for (int i=0; i < leaf->rays.size(); i++) {
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366 | int k = leaf->rays[i].GetRayClass();
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367 | rays[k].push_back(leaf->rays[i].mRay);
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368 | }
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369 |
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370 | // SOURCE RAY
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371 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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372 | // TERMINATION RAY
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373 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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374 | // PASSING_RAY
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375 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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376 | // CONTAINED_RAY
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377 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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378 |
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379 | delete exporter;
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380 | return true;
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381 | }
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382 |
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383 | void
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384 | RssPreprocessor::ExportRssTreeLeaves(RssTree *tree, const int number)
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385 | {
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386 | vector<RssTreeLeaf *> leaves;
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387 | tree->CollectLeaves(leaves);
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388 |
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389 | int num = 0;
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390 | int i;
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391 | float p = number / (float)leaves.size();
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392 | for (i=0; i < leaves.size(); i++) {
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393 | if (RandomValue(0,1) < p) {
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394 | char filename[64];
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395 | sprintf(filename, "rss-leaf-%04d.x3d", num);
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396 | ExportRssTreeLeaf(filename, tree, leaves[i]);
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397 | num++;
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398 | }
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399 | if (num >= number)
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400 | break;
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401 | }
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402 | }
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403 |
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404 |
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405 | float
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406 | RssPreprocessor::GetAvgPvsSize(RssTree *tree,
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407 | const vector<AxisAlignedBox3> &viewcells
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408 | )
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409 | {
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410 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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411 |
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412 | int sum = 0;
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413 | for (it = viewcells.begin(); it != it_end; ++ it)
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414 | sum += tree->GetPvsSize(*it);
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415 |
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416 | return sum/(float)viewcells.size();
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417 | }
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418 |
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419 |
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420 | void
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421 | RssPreprocessor::ExportPvs(char *filename,
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422 | RssTree *rssTree
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423 | )
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424 | {
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425 | ObjectContainer pvs;
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426 | if (rssTree->CollectRootPvs(pvs)) {
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427 | Exporter *exporter = Exporter::GetExporter(filename);
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428 | exporter->SetFilled();
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429 | exporter->ExportGeometry(pvs);
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430 | exporter->SetWireframe();
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431 | exporter->ExportBox(rssTree->bbox);
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432 | exporter->ExportViewpoint(rssTree->bbox.Center(), Vector3(1,0,0));
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433 | delete exporter;
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434 | }
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435 | }
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436 |
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437 |
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438 | void
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439 | RssPreprocessor::ComputeRenderError()
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440 | {
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441 | // compute rendering error
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442 | if (renderer && renderer->mPvsStatFrames) {
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443 | // emit EvalPvsStat();
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444 | // QMutex mutex;
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445 | // mutex.lock();
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446 | // renderer->mRenderingFinished.wait(&mutex);
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447 | // mutex.unlock();
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448 |
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449 | renderer->EvalPvsStat();
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450 | mStats <<
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451 | "#AvgPvsRenderError\n" <<renderer->mPvsStat.GetAvgError()<<endl<<
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452 | "#MaxPvsRenderError\n" <<renderer->mPvsStat.GetMaxError()<<endl<<
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453 | "#ErrorFreeFrames\n" <<renderer->mPvsStat.GetErrorFreeFrames()<<endl<<
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454 | "#AvgRenderPvs\n" <<renderer->mPvsStat.GetAvgPvs()<<endl;
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455 | }
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456 | }
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457 |
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458 |
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459 |
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460 | bool
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461 | RssPreprocessor::ComputeVisibility()
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462 | {
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463 |
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464 | Debug << "type: rss" << endl;
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465 |
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466 | cout<<"Rss Preprocessor started\n"<<flush;
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467 | // cout<<"Memory/ray "<<sizeof(VssRay)+sizeof(RssTreeNode::RayInfo)<<endl;
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468 |
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469 | Randomize(0);
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470 |
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471 |
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472 | long startTime = GetTime();
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473 |
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474 | int totalSamples = 0;
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475 |
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476 | mViewSpaceBox = NULL;
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477 |
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478 | // if not already loaded, construct view cells from file
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479 | if (!mLoadViewCells) {
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480 |
|
---|
481 | if (0)
|
---|
482 | mViewCellsManager->SetViewSpaceBox(mKdTree->GetBox());
|
---|
483 | else {
|
---|
484 | AxisAlignedBox3 box = mKdTree->GetBox();
|
---|
485 | float s = box.Size(0);
|
---|
486 | box.Scale(0.1f);
|
---|
487 | box.SetMin(0, box.Min(0) + s);
|
---|
488 | box.SetMax(0, box.Max(0) + s);
|
---|
489 | mViewCellsManager->SetViewSpaceBox(box);
|
---|
490 | }
|
---|
491 |
|
---|
492 | // construct view cells using it's own set of samples
|
---|
493 | mViewCellsManager->Construct(this);
|
---|
494 |
|
---|
495 | //-- several visualizations and statistics
|
---|
496 | Debug << "view cells construction finished: " << endl;
|
---|
497 | mViewCellsManager->PrintStatistics(Debug);
|
---|
498 | }
|
---|
499 |
|
---|
500 |
|
---|
501 | int rssPass = 0;
|
---|
502 | int rssSamples = 0;
|
---|
503 |
|
---|
504 | if (mLoadInitialSamples) {
|
---|
505 | cout << "Loading samples from file ... ";
|
---|
506 | LoadSamples(mVssRays, mObjects);
|
---|
507 | cout << "finished\n" << endl;
|
---|
508 | } else {
|
---|
509 | SimpleRayContainer rays;
|
---|
510 |
|
---|
511 | cout<<"Generating initial rays..."<<endl;
|
---|
512 | GenerateRays(mInitialSamples/4, SPATIAL_BOX_BASED_DISTRIBUTION, rays);
|
---|
513 | GenerateRays(mInitialSamples/4, OBJECT_BASED_DISTRIBUTION, rays);
|
---|
514 | GenerateRays(mInitialSamples/4, DIRECTION_BASED_DISTRIBUTION, rays);
|
---|
515 | GenerateRays(mInitialSamples/4, OBJECT_DIRECTION_BASED_DISTRIBUTION, rays);
|
---|
516 |
|
---|
517 | cout<<"Casting initial rays..."<<endl;
|
---|
518 | CastRays(rays, mVssRays);
|
---|
519 |
|
---|
520 | ExportObjectRays(mVssRays, 1546);
|
---|
521 | }
|
---|
522 |
|
---|
523 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl <<flush;
|
---|
524 |
|
---|
525 | rssSamples += (int)mVssRays.size();
|
---|
526 | totalSamples += mInitialSamples;
|
---|
527 | mPass++;
|
---|
528 |
|
---|
529 | if (mExportRays) {
|
---|
530 |
|
---|
531 | char filename[64];
|
---|
532 | sprintf(filename, "rss-rays-initial.x3d");
|
---|
533 | ExportRays(filename, mVssRays, mExportNumRays);
|
---|
534 |
|
---|
535 | }
|
---|
536 |
|
---|
537 | if (mStoreInitialSamples) {
|
---|
538 | cout << "Writing samples to file ... ";
|
---|
539 | ExportSamples(mVssRays);
|
---|
540 | cout << "finished\n" << endl;
|
---|
541 | }
|
---|
542 |
|
---|
543 | if (mUseViewcells) {
|
---|
544 |
|
---|
545 | cout<<"Computing sample contributions..."<<endl;
|
---|
546 | // evaluate contributions of the intitial rays
|
---|
547 | mViewCellsManager->ComputeSampleContributions(mVssRays, true, false);
|
---|
548 | cout<<"done.\n";
|
---|
549 |
|
---|
550 | mStats <<
|
---|
551 | "#Pass\n" <<mPass<<endl<<
|
---|
552 | "#RssPass\n" <<rssPass<<endl<<
|
---|
553 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3<<endl<<
|
---|
554 | "#TotalSamples\n" <<totalSamples<<endl<<
|
---|
555 | "#RssSamples\n" <<rssSamples<<endl;
|
---|
556 |
|
---|
557 | {
|
---|
558 | VssRayContainer contributingRays;
|
---|
559 | mVssRays.GetContributingRays(contributingRays, mPass);
|
---|
560 | mStats<<"#NUM_CONTRIBUTING_RAYS\n"<<(int)contributingRays.size()<<endl;
|
---|
561 | }
|
---|
562 |
|
---|
563 | mVssRays.PrintStatistics(mStats);
|
---|
564 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
565 |
|
---|
566 | // viewcells->UpdatePVS(newVssRays);
|
---|
567 | Debug<<"Valid viewcells before set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
568 | // cull viewcells with PVS > median (0.5f)
|
---|
569 | //mViewCellsManager->SetValidityPercentage(0, 0.5f);
|
---|
570 | mViewCellsManager->SetValidityPercentage(0, 1.0f);
|
---|
571 | Debug<<"Valid viewcells after set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
572 |
|
---|
573 | ComputeRenderError();
|
---|
574 | }
|
---|
575 |
|
---|
576 | rssPass++;
|
---|
577 |
|
---|
578 | mRssTree = new RssTree;
|
---|
579 | mRssTree->SetPass(mPass);
|
---|
580 |
|
---|
581 | /// compute view cell contribution of rays if view cells manager already constructed
|
---|
582 | // mViewCellsManager->ComputeSampleContributions(mVssRays, true, false);
|
---|
583 |
|
---|
584 | if (mUseImportanceSampling) {
|
---|
585 |
|
---|
586 | mRssTree->Construct(mObjects, mVssRays);
|
---|
587 |
|
---|
588 | mRssTree->stat.Print(mStats);
|
---|
589 | cout<<"RssTree root PVS size = "<<mRssTree->GetRootPvsSize()<<endl;
|
---|
590 |
|
---|
591 | if (mExportRssTree) {
|
---|
592 | ExportRssTree("rss-tree-100.x3d", mRssTree, Vector3(1,0,0));
|
---|
593 | ExportRssTree("rss-tree-001.x3d", mRssTree, Vector3(0,0,1));
|
---|
594 | ExportRssTree("rss-tree-101.x3d", mRssTree, Vector3(1,0,1));
|
---|
595 | ExportRssTree("rss-tree-101m.x3d", mRssTree, Vector3(-1,0,-1));
|
---|
596 | ExportRssTreeLeaves(mRssTree, 10);
|
---|
597 | }
|
---|
598 |
|
---|
599 | if (mExportPvs) {
|
---|
600 | ExportPvs("rss-pvs-initial.x3d", mRssTree);
|
---|
601 | }
|
---|
602 | }
|
---|
603 |
|
---|
604 |
|
---|
605 | while (1) {
|
---|
606 | SimpleRayContainer rays;
|
---|
607 | VssRayContainer vssRays;
|
---|
608 | int castRays = 0;
|
---|
609 | if (mUseImportanceSampling) {
|
---|
610 | VssRayContainer tmpVssRays;
|
---|
611 |
|
---|
612 | float ratios[] = {0.8f,0.1f,0.1f};
|
---|
613 |
|
---|
614 | GenerateRays(mRssSamplesPerPass*ratios[0], RSS_BASED_DISTRIBUTION, rays);
|
---|
615 | CastRays(rays, tmpVssRays);
|
---|
616 | castRays += rays.size();
|
---|
617 | float c1 = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
618 | mStats<<"#RssRelContrib"<<endl<<c1/rays.size()<<endl;
|
---|
619 |
|
---|
620 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
621 | rays.clear();
|
---|
622 | tmpVssRays.clear();
|
---|
623 |
|
---|
624 | if (ratios[1]!=0.0f) {
|
---|
625 | GenerateRays(mRssSamplesPerPass*ratios[1], SPATIAL_BOX_BASED_DISTRIBUTION, rays);
|
---|
626 | CastRays(rays, tmpVssRays);
|
---|
627 | castRays += rays.size();
|
---|
628 | float c2 = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
629 | mStats<<"#SpatialRelContrib"<<endl<<c2/rays.size()<<endl;
|
---|
630 |
|
---|
631 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
632 |
|
---|
633 | rays.clear();
|
---|
634 | tmpVssRays.clear();
|
---|
635 | }
|
---|
636 |
|
---|
637 |
|
---|
638 | if (ratios[2]!=0.0f) {
|
---|
639 | GenerateRays(mRssSamplesPerPass*ratios[2], DIRECTION_BASED_DISTRIBUTION, rays);
|
---|
640 | CastRays(rays, tmpVssRays);
|
---|
641 | castRays += rays.size();
|
---|
642 | float c3 = mViewCellsManager->ComputeSampleContributions(tmpVssRays, false, true);
|
---|
643 | mStats<<"#DirectionalRelContrib"<<endl<<c3/rays.size()<<endl;
|
---|
644 |
|
---|
645 | vssRays.insert(vssRays.end(), tmpVssRays.begin(), tmpVssRays.end() );
|
---|
646 |
|
---|
647 | rays.clear();
|
---|
648 | tmpVssRays.clear();
|
---|
649 | }
|
---|
650 |
|
---|
651 | // add contributions of all rays at once...
|
---|
652 | mViewCellsManager->AddSampleContributions(vssRays);
|
---|
653 |
|
---|
654 | }
|
---|
655 | else {
|
---|
656 | int rayType = SPATIAL_BOX_BASED_DISTRIBUTION;
|
---|
657 | if (mObjectBasedSampling)
|
---|
658 | rayType = OBJECT_BASED_DISTRIBUTION;
|
---|
659 | else
|
---|
660 | if (mDirectionalSampling)
|
---|
661 | rayType = DIRECTION_BASED_DISTRIBUTION;
|
---|
662 |
|
---|
663 | cout<<"Generating rays..."<<endl;
|
---|
664 |
|
---|
665 | GenerateRays(mRssSamplesPerPass, rayType, rays);
|
---|
666 | cout<<"done."<<endl;
|
---|
667 |
|
---|
668 | cout<<"Casting rays..."<<endl;
|
---|
669 | CastRays(rays, vssRays);
|
---|
670 | cout<<"done."<<endl;
|
---|
671 | castRays += rays.size();
|
---|
672 | if (mUseViewcells) {
|
---|
673 | /// compute view cell contribution of rays
|
---|
674 | cout<<"Computing sample contributions..."<<endl;
|
---|
675 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
676 | cout<<"done."<<endl;
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 | }
|
---|
681 | totalSamples += castRays;
|
---|
682 | rssSamples += (int)vssRays.size();
|
---|
683 |
|
---|
684 | cout<<"Generated "<<castRays<<" rays, progress "<<totalSamples/((float) mRssSamples +
|
---|
685 | mInitialSamples)<<"%\n";
|
---|
686 |
|
---|
687 |
|
---|
688 | mStats <<
|
---|
689 | "#Pass\n" <<mPass<<endl<<
|
---|
690 | "#RssPass\n" <<rssPass<<endl<<
|
---|
691 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3<<endl<<
|
---|
692 | "#TotalSamples\n" <<totalSamples<<endl<<
|
---|
693 | "#RssSamples\n" <<rssSamples<<endl;
|
---|
694 |
|
---|
695 |
|
---|
696 | if (mUseViewcells) {
|
---|
697 | vssRays.PrintStatistics(mStats);
|
---|
698 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
699 | }
|
---|
700 |
|
---|
701 | if (0 && mPass > 0) {
|
---|
702 | if (mUseImportanceSampling)
|
---|
703 | renderer->mSnapPrefix.sprintf("snap/i-%02d-", mPass);
|
---|
704 | else
|
---|
705 | renderer->mSnapPrefix.sprintf("snap/r-%02d-", mPass);
|
---|
706 | renderer->mSnapErrorFrames = true;
|
---|
707 | }
|
---|
708 |
|
---|
709 | ComputeRenderError();
|
---|
710 |
|
---|
711 | // epxort rays before adding them to the tree -> some of them can be deleted
|
---|
712 |
|
---|
713 | if (mExportRays) {
|
---|
714 | char filename[64];
|
---|
715 | if (mUseImportanceSampling)
|
---|
716 | sprintf(filename, "rss-rays-i%04d.x3d", rssPass);
|
---|
717 | else
|
---|
718 | sprintf(filename, "rss-rays-%04d.x3d", rssPass);
|
---|
719 |
|
---|
720 | ExportRays(filename, vssRays, mExportNumRays);
|
---|
721 |
|
---|
722 | // now export all contributing rays
|
---|
723 | VssRayContainer contributingRays;
|
---|
724 | vssRays.GetContributingRays(contributingRays, mPass);
|
---|
725 | mStats<<"#NUM_CONTRIBUTING_RAYS\n"<<(int)contributingRays.size()<<endl;
|
---|
726 | sprintf(filename, "rss-crays-%04d.x3d", rssPass);
|
---|
727 | ExportRays(filename, contributingRays, mExportNumRays);
|
---|
728 | }
|
---|
729 |
|
---|
730 |
|
---|
731 | // add rays to the tree after the viewcells have been cast to have their contributions
|
---|
732 | // already when adding into the tree
|
---|
733 | // do not add those rays which have too low or no contribution....
|
---|
734 |
|
---|
735 | if (mUseImportanceSampling) {
|
---|
736 | mRssTree->AddRays(vssRays);
|
---|
737 |
|
---|
738 | if (mUpdateSubdivision) {
|
---|
739 | int updatePasses = 1;
|
---|
740 | if (mPass % updatePasses == 0) {
|
---|
741 | int subdivided = mRssTree->UpdateSubdivision();
|
---|
742 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
743 | cout<<"#total leaves = "<<mRssTree->stat.Leaves()<<endl;
|
---|
744 | }
|
---|
745 | }
|
---|
746 | }
|
---|
747 |
|
---|
748 | if (mExportPvs) {
|
---|
749 | char filename[64];
|
---|
750 | sprintf(filename, "rss-pvs-%04d.x3d", rssPass);
|
---|
751 | ExportPvs(filename, mRssTree);
|
---|
752 | }
|
---|
753 |
|
---|
754 |
|
---|
755 | if (!mUseImportanceSampling)
|
---|
756 | CLEAR_CONTAINER(vssRays);
|
---|
757 | // otherwise the rays get deleted by the rss tree update according to RssTree.maxRays ....
|
---|
758 |
|
---|
759 | if (totalSamples >= mRssSamples + mInitialSamples)
|
---|
760 | break;
|
---|
761 |
|
---|
762 |
|
---|
763 | rssPass++;
|
---|
764 | mPass++;
|
---|
765 | mRssTree->SetPass(mPass);
|
---|
766 | }
|
---|
767 |
|
---|
768 | if (mUseViewcells) {
|
---|
769 |
|
---|
770 | if(0)
|
---|
771 | {
|
---|
772 | VssRayContainer selectedRays;
|
---|
773 | int desired = mViewCellsManager->GetVisualizationSamples();
|
---|
774 |
|
---|
775 | mVssRays.SelectRays(desired, selectedRays);
|
---|
776 |
|
---|
777 | mViewCellsManager->Visualize(mObjects, selectedRays);
|
---|
778 | }
|
---|
779 |
|
---|
780 | // view cells after sampling
|
---|
781 | mViewCellsManager->PrintStatistics(Debug);
|
---|
782 |
|
---|
783 | //-- render simulation after merge
|
---|
784 | cout << "\nevaluating bsp view cells render time after sampling ... ";
|
---|
785 |
|
---|
786 | mRenderSimulator->RenderScene();
|
---|
787 | SimulationStatistics ss;
|
---|
788 | mRenderSimulator->GetStatistics(ss);
|
---|
789 |
|
---|
790 | cout << " finished" << endl;
|
---|
791 | cout << ss << endl;
|
---|
792 | Debug << ss << endl;
|
---|
793 |
|
---|
794 | }
|
---|
795 |
|
---|
796 | Debug<<"Deleting RSS tree...\n";
|
---|
797 | delete mRssTree;
|
---|
798 | Debug<<"Done.\n";
|
---|
799 |
|
---|
800 |
|
---|
801 | return true;
|
---|
802 | }
|
---|
803 |
|
---|