[447] | 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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[451] | 11 | #include "ViewCellsManager.h"
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[452] | 12 | #include "RenderSimulator.h"
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[447] | 13 |
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[467] | 14 | static bool useViewSpaceBox = false;
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[447] | 15 | static bool use2dSampling = false;
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[463] | 16 | static bool fromBoxVisibility = false;
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[447] | 17 |
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[463] | 18 |
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[447] | 19 | RssPreprocessor::RssPreprocessor():
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| 20 | mPass(0),
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| 21 | mVssRays()
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| 22 | {
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| 23 | // this should increase coherence of the samples
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| 24 | environment->GetIntValue("RssPreprocessor.samplesPerPass", mSamplesPerPass);
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| 25 | environment->GetIntValue("RssPreprocessor.initialSamples", mInitialSamples);
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| 26 | environment->GetIntValue("RssPreprocessor.vssSamples", mRssSamples);
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| 27 | environment->GetIntValue("RssPreprocessor.vssSamplesPerPass", mRssSamplesPerPass);
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| 28 | environment->GetBoolValue("RssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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| 29 | environment->GetIntValue("BspTree.Construction.samples", mBspConstructionSamples);
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[464] | 30 |
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| 31 | environment->GetBoolValue("RssPreprocessor.Export.pvs", mExportPvs);
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| 32 | environment->GetBoolValue("RssPreprocessor.Export.rssTree", mExportRssTree);
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| 33 | environment->GetBoolValue("RssPreprocessor.Export.rays", mExportRays);
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| 34 | environment->GetIntValue("RssPreprocessor.Export.numRays", mExportNumRays);
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| 35 | environment->GetBoolValue("RssPreprocessor.useViewcells", mUseViewcells);
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| 36 |
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| 37 | environment->GetBoolValue("RssPreprocessor.updateSubdivision", mUpdateSubdivision);
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| 38 |
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[447] | 39 | mStats.open("stats.log");
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| 40 | }
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| 41 |
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| 42 | RssPreprocessor::~RssPreprocessor()
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| 43 | {
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| 44 | CLEAR_CONTAINER(mVssRays);
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| 45 | }
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| 46 |
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| 47 | void
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| 48 | RssPreprocessor::SetupRay(Ray &ray,
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| 49 | const Vector3 &point,
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| 50 | const Vector3 &direction
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| 51 | )
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| 52 | {
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| 53 | ray.intersections.clear();
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| 54 | // do not store anything else then intersections at the ray
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| 55 | ray.Init(point, direction, Ray::LOCAL_RAY);
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| 56 | }
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| 57 |
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| 58 | int
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| 59 | RssPreprocessor::CastRay(
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| 60 | Vector3 &viewPoint,
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| 61 | Vector3 &direction,
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| 62 | VssRayContainer &vssRays
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| 63 | )
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| 64 | {
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| 65 | int hits = 0;
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| 66 | static Ray ray;
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| 67 | AxisAlignedBox3 box = mKdTree->GetBox();
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| 68 |
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| 69 | AxisAlignedBox3 sbox = box;
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| 70 | sbox.Enlarge(Vector3(-Limits::Small));
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| 71 | if (!sbox.IsInside(viewPoint))
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| 72 | return 0;
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| 73 |
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| 74 | SetupRay(ray, viewPoint, direction);
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| 75 | // cast ray to KD tree to find intersection with other objects
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| 76 | Intersectable *objectA, *objectB;
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| 77 | Vector3 pointA, pointB;
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| 78 | float bsize = Magnitude(box.Size());
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| 79 |
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| 80 | if (mKdTree->CastRay(ray)) {
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| 81 | objectA = ray.intersections[0].mObject;
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| 82 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 83 | } else {
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| 84 | objectA = NULL;
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| 85 | // compute intersection with the scene bounding box
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| 86 | float tmin, tmax;
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| 87 | box.ComputeMinMaxT(ray, &tmin, &tmax);
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| 88 | if (tmax > bsize) {
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| 89 | //cerr<<"Warning: tmax > box size tmax="<<tmax<<" tmin="<<tmin<<" size="<<bsize<<endl;
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| 90 | //cerr<<"ray"<<ray<<endl;
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| 91 | }
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| 92 | pointA = ray.Extrap(tmax);
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| 93 | }
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| 94 |
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| 95 | bool detectEmptyViewSpace = true;
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| 96 |
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| 97 | if (detectEmptyViewSpace) {
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| 98 | SetupRay(ray, pointA, -direction);
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| 99 | } else
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| 100 | SetupRay(ray, viewPoint, -direction);
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| 101 |
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| 102 |
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| 103 | if (mKdTree->CastRay(ray)) {
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| 104 | objectB = ray.intersections[0].mObject;
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| 105 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 106 | } else {
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| 107 | objectB = NULL;
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| 108 | float tmin, tmax;
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| 109 | box.ComputeMinMaxT(ray, &tmin, &tmax);
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| 110 | if (tmax > bsize) {
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| 111 | //cerr<<"Warning: tmax > box size tmax="<<tmax<<" tmin="<<tmin<<" size="<<bsize<<endl;
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| 112 | //cerr<<"ray"<<ray<<endl;
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| 113 | }
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| 114 | pointB = ray.Extrap(tmax);
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| 115 | }
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| 116 |
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| 117 | VssRay *vssRay = NULL;
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| 118 |
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| 119 | bool validSample = true;
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| 120 | if (detectEmptyViewSpace) {
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| 121 | // check if the viewpoint lies on the line segment AB
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| 122 | if (Distance(pointA, pointB) <
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| 123 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small) {
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| 124 | validSample = false;
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| 125 | }
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| 126 | }
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| 127 |
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| 128 | if (validSample) {
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| 129 | if (objectA) {
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| 130 | vssRay = new VssRay(pointB,
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| 131 | pointA,
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| 132 | objectB,
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[464] | 133 | objectA,
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| 134 | mPass
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| 135 | );
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[447] | 136 | vssRays.push_back(vssRay);
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| 137 | hits ++;
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| 138 | }
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| 139 |
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| 140 | if (objectB) {
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| 141 | vssRay = new VssRay(pointA,
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| 142 | pointB,
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| 143 | objectA,
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[464] | 144 | objectB,
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| 145 | mPass
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| 146 | );
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[447] | 147 | vssRays.push_back(vssRay);
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| 148 | hits ++;
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| 149 | }
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| 150 | }
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| 151 |
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| 152 | return hits;
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| 153 | }
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| 154 |
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| 155 |
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| 156 | Vector3
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| 157 | RssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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| 158 | {
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| 159 | AxisAlignedBox3 box;
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| 160 |
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| 161 | if (viewSpaceBox)
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| 162 | box =*viewSpaceBox;
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| 163 | else
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| 164 | box = mKdTree->GetBox();
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| 165 |
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| 166 | // shrink the box in the y direction
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| 167 | return box.GetRandomPoint();
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| 168 | }
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| 169 |
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| 170 | Vector3
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| 171 | RssPreprocessor::GetDirection(const Vector3 &viewpoint,
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| 172 | AxisAlignedBox3 *viewSpaceBox
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| 173 | )
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| 174 | {
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| 175 | Vector3 point;
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| 176 | if (!use2dSampling) {
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| 177 | Vector3 normal;
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[475] | 178 | int i = (int)RandomValue(0, mObjects.size()-1);
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[447] | 179 | Intersectable *object = mObjects[i];
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| 180 | object->GetRandomSurfacePoint(point, normal);
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| 181 | } else {
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| 182 | AxisAlignedBox3 box;
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| 183 |
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| 184 | if (viewSpaceBox)
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| 185 | box =*viewSpaceBox;
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| 186 | else
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| 187 | box = mKdTree->GetBox();
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| 188 |
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| 189 | point = box.GetRandomPoint();
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| 190 | point.y = viewpoint.y;
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| 191 | }
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| 192 |
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| 193 | return point - viewpoint;
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| 194 | }
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| 195 |
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| 196 | int
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| 197 | RssPreprocessor::GenerateImportanceRays(RssTree *rssTree,
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| 198 | const int desiredSamples,
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| 199 | SimpleRayContainer &rays
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| 200 | )
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| 201 | {
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| 202 | int num;
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[463] | 203 |
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| 204 |
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[447] | 205 |
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| 206 | float avgPvsSize;
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| 207 | float avgRayContribution;
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| 208 | float avgPvsEntropy;
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| 209 | float avgRayLengthEntropy;
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| 210 | float avgImportance;
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[463] | 211 | float avgRays;
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[447] | 212 | rssTree->GetTreeStatistics(
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| 213 | avgPvsSize,
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[463] | 214 | avgRays,
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[447] | 215 | avgRayContribution,
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| 216 | avgPvsEntropy,
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| 217 | avgRayLengthEntropy,
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| 218 | avgImportance);
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| 219 |
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| 220 | cout<<
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[467] | 221 | "#RSS_AVG_PVS_SIZE\n"<<avgPvsSize<<endl<<
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| 222 | "#RSS_AVG_RAYS\n"<<avgRays<<endl<<
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| 223 | "#RSS_AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl<<
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| 224 | "#RSS_AVG_PVS_ENTROPY\n"<<avgPvsEntropy<<endl<<
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| 225 | "#RSS_AVG_RAY_LENGTH_ENTROPY\n"<<avgRayLengthEntropy<<endl<<
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| 226 | "#RSS_AVG_IMPORTANCE\n"<<avgImportance<<endl;
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[447] | 227 |
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| 228 | if (0) {
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| 229 | float p = desiredSamples/(float)(avgRayContribution*rssTree->stat.Leaves());
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| 230 | num = rssTree->GenerateRays(p, rays);
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| 231 | } else {
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[459] | 232 | int leaves = rssTree->stat.Leaves()/1;
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[447] | 233 | num = rssTree->GenerateRays(desiredSamples, leaves, rays);
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| 234 | }
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| 235 |
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| 236 | cout<<"Generated "<<num<<" rays."<<endl;
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| 237 |
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| 238 | return num;
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| 239 | }
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| 240 |
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| 241 |
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| 242 | bool
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| 243 | RssPreprocessor::ExportRays(const char *filename,
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| 244 | const VssRayContainer &vssRays,
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| 245 | const int number
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| 246 | )
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| 247 | {
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| 248 | cout<<"Exporting vss rays..."<<endl<<flush;
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| 249 |
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| 250 | float prob = number/(float)vssRays.size();
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| 251 |
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| 252 |
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| 253 | Exporter *exporter = NULL;
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| 254 | exporter = Exporter::GetExporter(filename);
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| 255 | // exporter->SetWireframe();
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| 256 | // exporter->ExportKdTree(*mKdTree);
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| 257 | exporter->SetFilled();
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| 258 | exporter->ExportScene(mSceneGraph->mRoot);
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| 259 | exporter->SetWireframe();
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| 260 |
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| 261 | if (mViewSpaceBox) {
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| 262 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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| 263 | exporter->ExportBox(*mViewSpaceBox);
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| 264 | exporter->ResetForcedMaterial();
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| 265 | }
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| 266 |
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| 267 | VssRayContainer rays; for (int i=0; i < vssRays.size(); i++)
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| 268 | if (RandomValue(0,1) < prob)
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| 269 | rays.push_back(vssRays[i]);
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| 270 |
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| 271 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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| 272 |
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| 273 | delete exporter;
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| 274 |
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| 275 | cout<<"done."<<endl<<flush;
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| 276 |
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| 277 | return true;
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| 278 | }
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| 279 |
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| 280 |
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| 281 | bool
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| 282 | RssPreprocessor::ExportRssTree(char *filename,
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| 283 | RssTree *tree,
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| 284 | const Vector3 &dir
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| 285 | )
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| 286 | {
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| 287 | Exporter *exporter = Exporter::GetExporter(filename);
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| 288 | exporter->SetFilled();
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| 289 | exporter->ExportScene(mSceneGraph->mRoot);
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| 290 | // exporter->SetWireframe();
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| 291 | bool result = exporter->ExportRssTree2( *tree, dir );
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| 292 | delete exporter;
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| 293 | return result;
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| 294 | }
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| 295 |
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| 296 | bool
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| 297 | RssPreprocessor::ExportRssTreeLeaf(char *filename,
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| 298 | RssTree *tree,
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| 299 | RssTreeLeaf *leaf)
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| 300 | {
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| 301 | Exporter *exporter = NULL;
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| 302 | exporter = Exporter::GetExporter(filename);
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| 303 | exporter->SetWireframe();
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| 304 | exporter->ExportKdTree(*mKdTree);
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| 305 |
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| 306 | if (mViewSpaceBox) {
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| 307 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 308 | exporter->ExportBox(*mViewSpaceBox);
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| 309 | exporter->ResetForcedMaterial();
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| 310 | }
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| 311 |
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| 312 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 313 | exporter->ExportBox(tree->GetBBox(leaf));
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| 314 | exporter->ResetForcedMaterial();
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| 315 |
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| 316 | VssRayContainer rays[4];
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| 317 | for (int i=0; i < leaf->rays.size(); i++) {
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| 318 | int k = leaf->rays[i].GetRayClass();
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| 319 | rays[k].push_back(leaf->rays[i].mRay);
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| 320 | }
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| 321 |
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| 322 | // SOURCE RAY
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| 323 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 324 | // TERMINATION RAY
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| 325 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 326 | // PASSING_RAY
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| 327 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 328 | // CONTAINED_RAY
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| 329 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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| 330 |
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| 331 | delete exporter;
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| 332 | return true;
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| 333 | }
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| 334 |
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| 335 | void
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| 336 | RssPreprocessor::ExportRssTreeLeaves(RssTree *tree, const int number)
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| 337 | {
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| 338 | vector<RssTreeLeaf *> leaves;
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| 339 | tree->CollectLeaves(leaves);
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| 340 |
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| 341 | int num = 0;
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| 342 | int i;
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| 343 | float p = number / (float)leaves.size();
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| 344 | for (i=0; i < leaves.size(); i++) {
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| 345 | if (RandomValue(0,1) < p) {
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| 346 | char filename[64];
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| 347 | sprintf(filename, "rss-leaf-%04d.x3d", num);
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| 348 | ExportRssTreeLeaf(filename, tree, leaves[i]);
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| 349 | num++;
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| 350 | }
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| 351 | if (num >= number)
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| 352 | break;
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| 353 | }
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| 354 | }
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| 355 |
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| 356 |
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| 357 | float
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| 358 | RssPreprocessor::GetAvgPvsSize(RssTree *tree,
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| 359 | const vector<AxisAlignedBox3> &viewcells
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| 360 | )
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| 361 | {
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| 362 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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| 363 |
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| 364 | int sum = 0;
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| 365 | for (it = viewcells.begin(); it != it_end; ++ it)
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| 366 | sum += tree->GetPvsSize(*it);
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| 367 |
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| 368 | return sum/(float)viewcells.size();
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| 369 | }
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| 370 |
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| 371 |
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| 372 | void
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| 373 | RssPreprocessor::ExportPvs(char *filename,
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| 374 | RssTree *rssTree
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| 375 | )
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| 376 | {
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| 377 | ObjectContainer pvs;
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| 378 | if (rssTree->CollectRootPvs(pvs)) {
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| 379 | Exporter *exporter = Exporter::GetExporter(filename);
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| 380 | exporter->SetFilled();
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| 381 | exporter->ExportGeometry(pvs);
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[459] | 382 | exporter->SetWireframe();
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| 383 | exporter->ExportBox(rssTree->bbox);
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| 384 | exporter->ExportViewpoint(rssTree->bbox.Center(), Vector3(1,0,0));
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[447] | 385 | delete exporter;
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| 386 | }
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| 387 | }
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| 388 |
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| 389 | bool
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| 390 | RssPreprocessor::ComputeVisibility()
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| 391 | {
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[464] | 392 | cout<<"Rss Preprocessor started\n"<<flush;
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| 393 | cout<<"Memory/ray "<<sizeof(VssRay)+sizeof(RssTreeNode::RayInfo)<<endl;
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[447] | 394 | mSceneGraph->CollectObjects(&mObjects);
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| 395 |
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| 396 | long startTime = GetTime();
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| 397 |
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| 398 | int totalSamples = 0;
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| 399 |
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| 400 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
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| 401 |
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| 402 | if (fromBoxVisibility) {
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[459] | 403 | float m = box->Min(1);
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| 404 | float bsize = box->Size(1);
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| 405 |
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| 406 | float size = 0.02f;
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[447] | 407 | float s = 0.5f - size;
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| 408 | float olds = Magnitude(box->Size());
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| 409 | box->Enlarge(box->Size()*Vector3(-s));
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[459] | 410 | // Vector3 translation = Vector3(-olds*0.2f, 0, 0);
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[469] | 411 | Vector3 translation = Vector3(-0.05f*olds, 0, 0);
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[447] | 412 | box->SetMin(box->Min() + translation);
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| 413 | box->SetMax(box->Max() + translation);
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[459] | 414 |
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[469] | 415 | box->SetMin(1, m + bsize*0.1f);
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| 416 | box->SetMax(1, m + bsize*0.6f);
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[459] | 417 |
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| 418 |
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[447] | 419 | } else {
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| 420 |
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| 421 | // sample city like heights
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[459] | 422 | float m = box->Min(1);
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| 423 | float bsize = box->Size(1);
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[469] | 424 | box->SetMin(1, m + bsize*0.2f);
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| 425 | box->SetMax(1, m + bsize*0.3f);
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[447] | 426 | }
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| 427 |
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| 428 | if (use2dSampling)
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| 429 | box->SetMax(1, box->Min(1));
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| 430 |
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| 431 | if (useViewSpaceBox)
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| 432 | mViewSpaceBox = box;
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| 433 | else
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| 434 | mViewSpaceBox = NULL;
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| 435 |
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| 436 |
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| 437 | RssTree *rssTree = NULL;
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| 438 |
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| 439 | while (totalSamples < mInitialSamples) {
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| 440 | int passContributingSamples = 0;
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| 441 | int passSampleContributions = 0;
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| 442 | int passSamples = 0;
|
---|
| 443 | int index = 0;
|
---|
| 444 |
|
---|
| 445 | int sampleContributions;
|
---|
| 446 |
|
---|
| 447 | int s = Min(mSamplesPerPass, mInitialSamples);
|
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| 448 | for (int k=0; k < s; k++) {
|
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| 449 |
|
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| 450 | Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 451 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
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| 452 |
|
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[452] | 453 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
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[447] | 454 |
|
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| 455 |
|
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| 456 | //-- CORR matt: put block inside loop
|
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| 457 | if (sampleContributions) {
|
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| 458 | passContributingSamples ++;
|
---|
| 459 | passSampleContributions += sampleContributions;
|
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| 460 | }
|
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| 461 | passSamples++;
|
---|
| 462 | totalSamples++;
|
---|
| 463 | }
|
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| 464 |
|
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| 465 |
|
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| 466 | float avgRayContrib = (passContributingSamples > 0) ?
|
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| 467 | passSampleContributions/(float)passContributingSamples : 0;
|
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| 468 |
|
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| 469 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 470 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
| 471 | << "k #SampleContributions=" << passSampleContributions << " ("
|
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[467] | 472 | << 100*passContributingSamples/(float)passSamples<<"%)"
|
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| 473 | << "avgcontrib=" << avgRayContrib << endl;
|
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[447] | 474 |
|
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| 475 | mStats <<
|
---|
| 476 | "#Pass\n" <<mPass<<endl<<
|
---|
| 477 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 478 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 479 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
| 480 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 481 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
[467] | 482 |
|
---|
| 483 | mPass++;
|
---|
| 484 |
|
---|
[447] | 485 | }
|
---|
| 486 |
|
---|
| 487 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
[469] | 488 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl <<flush;
|
---|
[447] | 489 |
|
---|
| 490 |
|
---|
[464] | 491 | if (mExportRays) {
|
---|
[447] | 492 | char filename[64];
|
---|
| 493 | sprintf(filename, "rss-rays-initial.x3d");
|
---|
[464] | 494 | ExportRays(filename, mVssRays, mExportNumRays);
|
---|
[447] | 495 | }
|
---|
| 496 |
|
---|
[467] | 497 | if (mUseViewcells) {
|
---|
[463] | 498 | // construct view cells
|
---|
| 499 | mViewCellsManager->Construct(mObjects, mVssRays, mViewSpaceBox);
|
---|
[447] | 500 |
|
---|
[467] | 501 | VssRayContainer selectedRays;
|
---|
| 502 | int desired = Max(
|
---|
| 503 | mViewCellsManager->GetPostProcessSamples(),
|
---|
| 504 | mViewCellsManager->GetVisualizationSamples());
|
---|
| 505 | float p = desired/(float)mVssRays.size();
|
---|
[473] | 506 |
|
---|
[467] | 507 | for (int i=0; i < mVssRays.size(); i++) {
|
---|
| 508 | if (Random(1.0f) < p)
|
---|
| 509 | selectedRays.push_back(mVssRays[i]);
|
---|
| 510 | }
|
---|
| 511 | //-- post process view cells
|
---|
| 512 | mViewCellsManager->PostProcess(mObjects, selectedRays);
|
---|
| 513 |
|
---|
| 514 | //-- several visualizations and statistics
|
---|
[475] | 515 | Debug << "view cells after post processing: " << endl;
|
---|
[467] | 516 | mViewCellsManager->PrintStatistics(Debug);
|
---|
| 517 |
|
---|
| 518 | if (1)
|
---|
| 519 | mViewCellsManager->Visualize(mObjects, selectedRays);
|
---|
[463] | 520 | }
|
---|
[447] | 521 |
|
---|
[467] | 522 |
|
---|
| 523 | rssTree = new RssTree;
|
---|
| 524 |
|
---|
| 525 | if (mUseImportanceSampling) {
|
---|
| 526 |
|
---|
| 527 | if (fromBoxVisibility)
|
---|
| 528 | rssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 529 | else
|
---|
| 530 | rssTree->Construct(mVssRays, NULL);
|
---|
| 531 | cout<<"RssTree root PVS size = "<<rssTree->GetRootPvsSize()<<endl;
|
---|
| 532 |
|
---|
| 533 | if (mExportRssTree) {
|
---|
| 534 | ExportRssTree("rss-tree-100.x3d", rssTree, Vector3(1,0,0));
|
---|
| 535 | ExportRssTree("rss-tree-001.x3d", rssTree, Vector3(0,0,1));
|
---|
| 536 | ExportRssTree("rss-tree-101.x3d", rssTree, Vector3(1,0,1));
|
---|
| 537 | ExportRssTree("rss-tree-101m.x3d", rssTree, Vector3(-1,0,-1));
|
---|
| 538 | ExportRssTreeLeaves(rssTree, 10);
|
---|
| 539 | }
|
---|
| 540 |
|
---|
| 541 | if (mExportPvs) {
|
---|
| 542 | ExportPvs("rss-pvs-initial.x3d", rssTree);
|
---|
| 543 | }
|
---|
[459] | 544 | }
|
---|
[467] | 545 |
|
---|
[447] | 546 | // viewcells->UpdatePVS(newVssRays);
|
---|
[466] | 547 |
|
---|
[467] | 548 | int rssPass = 0;
|
---|
| 549 | int rssSamples = 0;
|
---|
[447] | 550 | while (1) {
|
---|
| 551 | int num = mRssSamplesPerPass;
|
---|
| 552 | SimpleRayContainer rays;
|
---|
| 553 | VssRayContainer vssRays;
|
---|
| 554 |
|
---|
| 555 | if (!mUseImportanceSampling) {
|
---|
| 556 | for (int j=0; j < num; j++) {
|
---|
| 557 | Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 558 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 559 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 560 | }
|
---|
| 561 | } else {
|
---|
| 562 | num = GenerateImportanceRays(rssTree, num, rays);
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 |
|
---|
| 566 | for (int i=0; i < rays.size(); i++)
|
---|
| 567 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[467] | 568 |
|
---|
[466] | 569 |
|
---|
[467] | 570 | totalSamples+=num;
|
---|
| 571 | rssSamples+=num;
|
---|
| 572 |
|
---|
| 573 | mStats <<
|
---|
| 574 | "#Pass\n" <<mPass<<endl<<
|
---|
| 575 | "#RssPass\n" <<rssPass<<endl<<
|
---|
| 576 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3<<endl<<
|
---|
| 577 | "#TotalSamples\n" <<totalSamples<<endl<<
|
---|
| 578 | "#RssSamples\n" <<rssSamples<<endl;
|
---|
| 579 |
|
---|
[466] | 580 | if (mUseViewcells) {
|
---|
| 581 |
|
---|
| 582 | /// compute view cell contribution of rays
|
---|
[467] | 583 | mViewCellsManager->ComputeSampleContributions(vssRays);
|
---|
[466] | 584 |
|
---|
[467] | 585 | vssRays.PrintStatistics(mStats);
|
---|
| 586 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
[466] | 587 | }
|
---|
| 588 |
|
---|
[467] | 589 | // add rays to the tree after the viewcells have been cast to have their contributions
|
---|
| 590 | // already when adding into the tree
|
---|
| 591 | // do not add those rays which have too low or no contribution....
|
---|
[466] | 592 |
|
---|
[467] | 593 | if (mUseImportanceSampling) {
|
---|
| 594 | rssTree->AddRays(vssRays);
|
---|
| 595 |
|
---|
| 596 | if (0) {
|
---|
| 597 | cout<<"############# Rss PVS STAT ##################\n";
|
---|
| 598 | cout<<"#AVG_RSS_PVS\n"<<rssTree->GetAvgPvsSize()<<endl;
|
---|
| 599 | cout<<"#RSS_ROOT_PVS\n"<<rssTree->GetRootPvsSize()<<endl;
|
---|
| 600 | }
|
---|
| 601 |
|
---|
| 602 | if (mUpdateSubdivision) {
|
---|
| 603 | int subdivided = rssTree->UpdateSubdivision();
|
---|
| 604 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 605 | cout<<"#total leaves = "<<rssTree->stat.Leaves()<<endl;
|
---|
| 606 | }
|
---|
[447] | 607 | }
|
---|
[467] | 608 |
|
---|
[464] | 609 | if (mExportRays) {
|
---|
[447] | 610 | char filename[64];
|
---|
| 611 | if (mUseImportanceSampling)
|
---|
[467] | 612 | sprintf(filename, "rss-rays-i%04d.x3d", rssPass);
|
---|
[447] | 613 | else
|
---|
[467] | 614 | sprintf(filename, "rss-rays-%04d.x3d", rssPass);
|
---|
[447] | 615 |
|
---|
[464] | 616 | ExportRays(filename, vssRays, mExportNumRays);
|
---|
[447] | 617 | }
|
---|
| 618 |
|
---|
[463] | 619 |
|
---|
[464] | 620 | if (mExportPvs) {
|
---|
[447] | 621 | char filename[64];
|
---|
[467] | 622 | sprintf(filename, "rss-pvs-%04d.x3d", rssPass);
|
---|
[447] | 623 | ExportPvs(filename, rssTree);
|
---|
| 624 | }
|
---|
| 625 |
|
---|
[467] | 626 | if (totalSamples >= mRssSamples + mInitialSamples)
|
---|
[447] | 627 | break;
|
---|
| 628 |
|
---|
| 629 |
|
---|
[467] | 630 | rssPass++;
|
---|
| 631 | mPass++;
|
---|
[447] | 632 | }
|
---|
| 633 |
|
---|
[464] | 634 | if (mUseViewcells) {
|
---|
[466] | 635 |
|
---|
| 636 |
|
---|
| 637 | //-- render simulation after merge
|
---|
| 638 | cout << "\nevaluating bsp view cells render time after merge ... ";
|
---|
[463] | 639 |
|
---|
[468] | 640 | mRenderSimulator->RenderScene();
|
---|
| 641 | SimulationStatistics ss;
|
---|
| 642 | mRenderSimulator->GetStatistics(ss);
|
---|
| 643 |
|
---|
[466] | 644 | cout << " finished" << endl;
|
---|
| 645 | cout << ss << endl;
|
---|
| 646 | Debug << ss << endl;
|
---|
| 647 |
|
---|
| 648 | }
|
---|
| 649 |
|
---|
[447] | 650 | delete rssTree;
|
---|
| 651 |
|
---|
| 652 | return true;
|
---|
| 653 | }
|
---|
| 654 |
|
---|