[589] | 1 | #include "Mesh.h"
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[1001] | 2 | #include "glInterface.h"
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| 3 | #include "OcclusionQuery.h"
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[589] | 4 | #include "GlRenderer.h"
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| 5 | #include "ViewCellsManager.h"
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| 6 | #include "SceneGraph.h"
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| 7 | #include "Pvs.h"
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| 8 | #include "Viewcell.h"
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| 9 | #include "Beam.h"
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[532] | 10 | #include "KdTree.h"
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[589] | 11 | #include "Environment.h"
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[1581] | 12 | #include "Triangle3.h"
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| 13 | #include "IntersectableWrapper.h"
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[1585] | 14 | #include "BvHierarchy.h"
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[1594] | 15 | #include "KdTree.h"
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[513] | 16 |
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[1990] | 17 | #ifdef USE_CG
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[1001] | 18 |
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[1990] | 19 | #include <Cg/cg.h>
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| 20 | #include <Cg/cgGL.h>
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[1001] | 21 |
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[1990] | 22 | #endif
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| 23 |
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[863] | 24 | namespace GtpVisibilityPreprocessor {
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[860] | 25 |
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[516] | 26 |
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[1112] | 27 | static bool arbQuerySupport = false;
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| 28 | static bool nvQuerySupport = false;
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| 29 |
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[1925] | 30 | static GLuint frontDepthMap;
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| 31 | static GLuint backDepthMap;
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[1112] | 32 |
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[1785] | 33 | const int depthMapSize = 512;
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| 34 |
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[1112] | 35 | static void InitExtensions()
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| 36 | {
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| 37 | GLenum err = glewInit();
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| 38 |
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| 39 | if (GLEW_OK != err)
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| 40 | {
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| 41 | // problem: glewInit failed, something is seriously wrong
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| 42 | cerr << "Error: " << glewGetErrorString(err) << endl;
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| 43 | exit(1);
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| 44 | }
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| 45 |
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| 46 | if (GLEW_ARB_occlusion_query)
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| 47 | arbQuerySupport = true;
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| 48 |
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| 49 | if (GLEW_NV_occlusion_query)
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| 50 | nvQuerySupport = true;
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| 51 |
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| 52 |
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| 53 | if (!arbQuerySupport && !nvQuerySupport)
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| 54 | {
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| 55 | cout << "I require the GL_ARB_occlusion_query or the GL_NV_occlusion_query OpenGL extension to work.\n";
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| 56 | exit(1);
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| 57 | }
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[1001] | 58 | }
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[589] | 59 |
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[811] | 60 |
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[589] | 61 | GlRenderer::GlRenderer(SceneGraph *sceneGraph,
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| 62 | ViewCellsManager *viewCellsManager,
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| 63 | KdTree *tree):
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| 64 | Renderer(sceneGraph, viewCellsManager),
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| 65 | mKdTree(tree)
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| 66 | {
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| 67 | mSceneGraph->CollectObjects(&mObjects);
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[1112] | 68 |
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| 69 | // mViewCellsManager->GetViewPoint(mViewPoint);
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| 70 |
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[1942] | 71 | viewCellsManager->GetViewPoint(mViewPoint);
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| 72 | //mSceneGraph->GetBox().Center();
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[589] | 73 | mViewDirection = Vector3(0,0,1);
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[608] | 74 |
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[1112] | 75 | // mViewPoint = Vector3(991.7, 187.8, -271);
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| 76 | // mViewDirection = Vector3(0.9, 0, -0.4);
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[878] | 77 |
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[589] | 78 | // timerId = startTimer(10);
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| 79 | // debug coords for atlanta
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[608] | 80 | // mViewPoint = Vector3(3473, 6.778, -1699);
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| 81 | // mViewDirection = Vector3(-0.2432, 0, 0.97);
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[589] | 82 |
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| 83 | mFrame = 0;
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| 84 | mWireFrame = false;
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[1983] | 85 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace",
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| 86 | mDetectEmptyViewSpace);
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[746] | 87 | mSnapErrorFrames = true;
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| 88 | mSnapPrefix = "snap/";
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| 89 | mUseForcedColors = false;
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[1594] | 90 | mRenderBoxes = false;
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[1983] | 91 | //mUseGlLists = true;
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| 92 | mUseGlLists = false;
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[1931] | 93 |
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| 94 | Environment::GetSingleton()->GetIntValue("Preprocessor.pvsRenderErrorSamples", mPvsStatFrames);
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| 95 | mPvsErrorBuffer.resize(mPvsStatFrames);
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| 96 | ClearErrorBuffer();
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| 97 |
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[589] | 98 | }
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| 99 |
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| 100 | GlRenderer::~GlRenderer()
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| 101 | {
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| 102 | cerr<<"gl renderer destructor..\n";
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[1145] | 103 |
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| 104 | //CLEAR_CONTAINER(sQueries);
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[1001] | 105 | CLEAR_CONTAINER(mOcclusionQueries);
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[589] | 106 |
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[1145] | 107 | cerr<<"done."<<endl;
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[589] | 108 | }
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| 109 |
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[1145] | 110 |
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[589] | 111 | void
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[1581] | 112 | GlRenderer::RenderTriangle(TriangleIntersectable *object)
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| 113 | {
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| 114 | Triangle3 &t = object->GetItem();
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[1944] | 115 |
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[1581] | 116 | glBegin(GL_TRIANGLES);
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| 117 | glVertex3f(t.mVertices[0].x, t.mVertices[0].y, t.mVertices[0].z);
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| 118 | glVertex3f(t.mVertices[1].x, t.mVertices[1].y, t.mVertices[1].z);
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| 119 | glVertex3f(t.mVertices[2].x, t.mVertices[2].y, t.mVertices[2].z);
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| 120 | glEnd();
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| 121 | }
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| 122 |
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| 123 | void
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[589] | 124 | GlRenderer::RenderIntersectable(Intersectable *object)
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| 125 | {
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[1594] | 126 | if (object->Mailed())
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| 127 | return;
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| 128 | object->Mail();
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| 129 |
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[589] | 130 | glPushAttrib(GL_CURRENT_BIT);
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| 131 | if (mUseFalseColors)
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| 132 | SetupFalseColor(object->mId);
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[1944] | 133 |
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[589] | 134 | switch (object->Type()) {
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| 135 | case Intersectable::MESH_INSTANCE:
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| 136 | RenderMeshInstance((MeshInstance *)object);
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| 137 | break;
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| 138 | case Intersectable::VIEW_CELL:
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[1581] | 139 | RenderViewCell(dynamic_cast<ViewCell *>(object));
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| 140 | break;
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[1001] | 141 | case Intersectable::TRANSFORMED_MESH_INSTANCE:
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[1581] | 142 | RenderTransformedMeshInstance(dynamic_cast<TransformedMeshInstance *>(object));
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| 143 | break;
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| 144 | case Intersectable::TRIANGLE_INTERSECTABLE:
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| 145 | RenderTriangle(dynamic_cast<TriangleIntersectable *>(object));
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| 146 | break;
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[1585] | 147 | case Intersectable::BVH_INTERSECTABLE: {
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| 148 |
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[1785] | 149 | BvhNode *node = dynamic_cast<BvhNode *>(object);
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| 150 |
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[1594] | 151 | if (mRenderBoxes)
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| 152 | RenderBox(node->GetBoundingBox());
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| 153 | else
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| 154 | RenderBvhNode(node);
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[1585] | 155 | break;
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| 156 | }
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[1594] | 157 | case Intersectable::KD_INTERSECTABLE: {
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| 158 | KdNode *node = (dynamic_cast<KdIntersectable *>(object))->GetItem();
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[1785] | 159 |
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[1594] | 160 | if (mRenderBoxes)
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| 161 | RenderBox(mKdTree->GetBox(node));
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| 162 | else
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| 163 | RenderKdNode(node);
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| 164 | break;
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| 165 | }
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[1585] | 166 |
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[589] | 167 | default:
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| 168 | cerr<<"Rendering this object not yet implemented\n";
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| 169 | break;
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| 170 | }
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| 171 |
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| 172 | glPopAttrib();
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| 173 | }
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| 174 |
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[1581] | 175 | void
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| 176 | GlRenderer::RenderRays(const VssRayContainer &rays)
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| 177 | {
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| 178 | VssRayContainer::const_iterator it = rays.begin(), it_end = rays.end();
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[589] | 179 |
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[1581] | 180 | glBegin(GL_LINES);
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| 181 | for (; it != it_end; ++it) {
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| 182 | VssRay *ray = *it;
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| 183 | float importance = log10(1e3*ray->mWeightedPvsContribution)/3.0f;
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| 184 | // cout<<"w="<<ray->mWeightedPvsContribution<<" r="<<ray->mWeightedPvsContribution;
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| 185 | glColor3f(importance, importance, importance);
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| 186 | glVertex3fv(&ray->mOrigin.x);
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| 187 | glVertex3fv(&ray->mTermination.x);
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| 188 | }
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| 189 | glEnd();
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| 190 | }
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| 191 |
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[1737] | 192 |
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| 193 |
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[589] | 194 | void
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| 195 | GlRenderer::RenderViewCell(ViewCell *vc)
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| 196 | {
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| 197 | if (vc->GetMesh()) {
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| 198 |
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[599] | 199 | if (!mUseFalseColors) {
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| 200 | if (vc->GetValid())
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| 201 | glColor3f(0,1,0);
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| 202 | else
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| 203 | glColor3f(0,0,1);
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| 204 | }
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[589] | 205 |
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| 206 | RenderMesh(vc->GetMesh());
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[599] | 207 | } else {
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| 208 | // render viewcells in the subtree
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| 209 | if (!vc->IsLeaf()) {
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| 210 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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| 211 |
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| 212 | ViewCellContainer::iterator it = vci->mChildren.begin();
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| 213 | for (; it != vci->mChildren.end(); ++it) {
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| 214 | RenderViewCell(*it);
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| 215 | }
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[685] | 216 | } else {
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| 217 | // cerr<<"Empty viewcell mesh\n";
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[599] | 218 | }
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[589] | 219 | }
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| 220 | }
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| 221 |
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[599] | 222 |
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[589] | 223 | void
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| 224 | GlRenderer::RenderMeshInstance(MeshInstance *mi)
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| 225 | {
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| 226 | RenderMesh(mi->GetMesh());
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| 227 | }
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| 228 |
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[1001] | 229 |
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[589] | 230 | void
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[1001] | 231 | GlRenderer::RenderTransformedMeshInstance(TransformedMeshInstance *mi)
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| 232 | {
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| 233 | // apply world transform before rendering
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| 234 | Matrix4x4 m;
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| 235 | mi->GetWorldTransform(m);
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| 236 |
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| 237 | glPushMatrix();
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[1002] | 238 | /* cout << "\n";
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[1001] | 239 | for (int i = 0; i < 4; ++ i)
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| 240 | for (int j = 0; j < 4; ++ j)
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[1002] | 241 | cout << m.x[i][j] << " "; cout << "\n"*/
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[1001] | 242 |
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| 243 | glMultMatrixf((float *)m.x);
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| 244 |
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[1002] | 245 | /*GLfloat dummy[16];
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| 246 | glGetFloatv(GL_MODELVIEW_MATRIX, dummy);
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[1001] | 247 | for (int i = 0; i < 16; ++ i)
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| 248 | cout << dummy[i] << " ";
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| 249 | cout << endl;*/
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| 250 | RenderMesh(mi->GetMesh());
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| 251 |
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| 252 | glPopMatrix();
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| 253 | }
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| 254 |
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| 255 |
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| 256 | void
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[1960] | 257 | GlRenderer::SetupFalseColor(const unsigned int id)
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[589] | 258 | {
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[1944] | 259 | // swap bits of the color
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| 260 | glColor3ub(id&255, (id>>8)&255, (id>>16)&255);
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[589] | 261 | }
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| 262 |
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| 263 |
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[1960] | 264 | unsigned int GlRenderer::GetId(const unsigned char r,
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| 265 | const unsigned char g,
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| 266 | const unsigned char b) const
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[589] | 267 | {
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| 268 | return r + (g << 8) + (b << 16);
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| 269 | }
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| 270 |
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[1960] | 271 |
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[589] | 272 | void
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| 273 | GlRenderer::SetupMaterial(Material *m)
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| 274 | {
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| 275 | if (m)
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| 276 | glColor3fv(&(m->mDiffuseColor.r));
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| 277 | }
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| 278 |
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[1960] | 279 |
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[589] | 280 | void
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| 281 | GlRenderer::RenderMesh(Mesh *mesh)
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| 282 | {
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| 283 | int i = 0;
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| 284 |
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[746] | 285 | if (!mUseFalseColors && !mUseForcedColors)
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[1944] | 286 | SetupMaterial(mesh->mMaterial);
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[589] | 287 |
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| 288 | for (i=0; i < mesh->mFaces.size(); i++) {
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| 289 | if (mWireFrame)
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| 290 | glBegin(GL_LINE_LOOP);
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| 291 | else
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| 292 | glBegin(GL_POLYGON);
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| 293 |
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| 294 | Face *face = mesh->mFaces[i];
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| 295 | for (int j = 0; j < face->mVertexIndices.size(); j++) {
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| 296 | glVertex3fv(&mesh->mVertices[face->mVertexIndices[j]].x);
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| 297 | }
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| 298 | glEnd();
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| 299 | }
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| 300 | }
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| 301 |
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| 302 | void
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| 303 | GlRenderer::InitGL()
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| 304 | {
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[1608] | 305 | mSphere = (GLUquadric *)gluNewQuadric();
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| 306 |
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[589] | 307 | glMatrixMode(GL_PROJECTION);
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| 308 | glLoadIdentity();
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| 309 |
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| 310 | glMatrixMode(GL_MODELVIEW);
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| 311 | glLoadIdentity();
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| 312 |
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[1785] | 313 | glFrontFace(GL_CCW);
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| 314 | glCullFace(GL_BACK);
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[589] | 315 | glEnable(GL_CULL_FACE);
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| 316 | glShadeModel(GL_FLAT);
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| 317 | glEnable(GL_DEPTH_TEST);
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| 318 | glEnable(GL_CULL_FACE);
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| 319 |
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[1001] | 320 | InitExtensions();
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[811] | 321 |
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[746] | 322 | #if 0
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| 323 | GLfloat mat_ambient[] = { 0.5, 0.5, 0.5, 1.0 };
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| 324 | /* mat_specular and mat_shininess are NOT default values */
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| 325 | GLfloat mat_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
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| 326 | GLfloat mat_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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| 327 | GLfloat mat_shininess[] = { 1.0 };
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| 328 |
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| 329 | GLfloat light_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
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| 330 | GLfloat light_diffuse[] = { 0.4, 0.4, 0.4, 1.0 };
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| 331 | GLfloat light_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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| 332 |
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| 333 | GLfloat lmodel_ambient[] = { 0.3, 0.3, 0.3, 1.0 };
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| 334 |
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| 335 |
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| 336 | // default Material
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| 337 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
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| 338 | glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
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| 339 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
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| 340 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
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| 341 |
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| 342 | // a light
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| 343 | glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
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| 344 | glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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| 345 | glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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| 346 |
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| 347 | glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
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| 348 | glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
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| 349 | glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);
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| 350 |
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| 351 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
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| 352 |
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| 353 | glEnable(GL_LIGHTING);
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| 354 | glEnable(GL_LIGHT0);
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| 355 | glEnable(GL_LIGHT1);
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| 356 |
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| 357 |
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| 358 | // set position of the light
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| 359 | GLfloat infinite_light[] = { 1.0, 0.8, 1.0, 0.0 };
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| 360 | glLightfv (GL_LIGHT0, GL_POSITION, infinite_light);
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| 361 |
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| 362 | // set position of the light2
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| 363 | GLfloat infinite_light2[] = { -0.3, 1.5, 1.0, 0.0 };
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| 364 | glLightfv (GL_LIGHT1, GL_POSITION, infinite_light2);
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| 365 |
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| 366 | glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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| 367 | // glColorMaterial( GL_FRONT_AND_BACK, GL_SPECULAR);
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| 368 | glEnable(GL_COLOR_MATERIAL);
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| 369 |
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| 370 | glShadeModel( GL_FLAT );
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| 371 |
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| 372 | glDepthFunc( GL_LESS );
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| 373 | glEnable( GL_DEPTH_TEST );
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| 374 | #endif
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| 375 |
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| 376 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
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| 377 |
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| 378 | glEnable( GL_NORMALIZE );
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| 379 |
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| 380 | glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
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[589] | 381 | }
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| 382 |
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[746] | 383 |
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[589] | 384 | void
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[811] | 385 | GlRenderer::SetupProjection(const int w, const int h, const float angle)
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[589] | 386 | {
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| 387 | glViewport(0, 0, w, h);
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| 388 | glMatrixMode(GL_PROJECTION);
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| 389 | glLoadIdentity();
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[811] | 390 | gluPerspective(angle, 1.0, 0.1, 2.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
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[589] | 391 | glMatrixMode(GL_MODELVIEW);
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| 392 | }
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| 393 |
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[1581] | 394 |
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| 395 |
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[589] | 396 | void
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| 397 | GlRenderer::SetupCamera()
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| 398 | {
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| 399 | Vector3 target = mViewPoint + mViewDirection;
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[811] | 400 |
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[589] | 401 | Vector3 up(0,1,0);
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| 402 |
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[811] | 403 | if (abs(DotProd(mViewDirection, up)) > 0.99f)
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| 404 | up = Vector3(1, 0, 0);
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| 405 |
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[589] | 406 | glLoadIdentity();
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| 407 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
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| 408 | target.x, target.y, target.z,
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| 409 | up.x, up.y, up.z);
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| 410 | }
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| 411 |
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[1145] | 412 | void
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| 413 | GlRenderer::_RenderScene()
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| 414 | {
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| 415 | ObjectContainer::const_iterator oi = mObjects.begin();
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[811] | 416 |
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[1145] | 417 | for (; oi != mObjects.end(); oi++)
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| 418 | RenderIntersectable(*oi);
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| 419 | }
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| 420 |
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| 421 | bool
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| 422 | GlRenderer::RenderScene()
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| 423 | {
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[1785] | 424 | Intersectable::NewMail();
|
---|
[1145] | 425 | static int glList = -1;
|
---|
| 426 | if (mUseGlLists) {
|
---|
| 427 | if (glList == -1) {
|
---|
| 428 | glList = glGenLists(1);
|
---|
| 429 | glNewList(glList, GL_COMPILE);
|
---|
| 430 | _RenderScene();
|
---|
| 431 | glEndList();
|
---|
| 432 | }
|
---|
[1969] | 433 |
|
---|
[1145] | 434 | glCallList(glList);
|
---|
| 435 | } else
|
---|
| 436 | _RenderScene();
|
---|
| 437 |
|
---|
| 438 |
|
---|
| 439 | return true;
|
---|
| 440 | }
|
---|
| 441 |
|
---|
| 442 |
|
---|
[589] | 443 | void
|
---|
[997] | 444 | GlRendererBuffer::EvalQueryWithItemBuffer(
|
---|
[1001] | 445 | //RenderCostSample &sample
|
---|
[997] | 446 | )
|
---|
| 447 | {
|
---|
| 448 | // read back the texture
|
---|
| 449 | glReadPixels(0, 0,
|
---|
| 450 | GetWidth(), GetHeight(),
|
---|
| 451 | GL_RGBA,
|
---|
| 452 | GL_UNSIGNED_BYTE,
|
---|
| 453 | mPixelBuffer);
|
---|
| 454 |
|
---|
| 455 |
|
---|
| 456 | unsigned int *p = mPixelBuffer;
|
---|
| 457 |
|
---|
| 458 | for (int y = 0; y < GetHeight(); y++)
|
---|
| 459 | {
|
---|
| 460 | for (int x = 0; x < GetWidth(); x++, p++)
|
---|
| 461 | {
|
---|
| 462 | unsigned int id = (*p) & 0xFFFFFF;
|
---|
| 463 |
|
---|
| 464 | if (id != 0xFFFFFF)
|
---|
| 465 | ++ mObjects[id]->mCounter;
|
---|
| 466 | }
|
---|
| 467 | }
|
---|
| 468 | }
|
---|
| 469 |
|
---|
[1145] | 470 |
|
---|
| 471 |
|
---|
| 472 | /****************************************************************/
|
---|
| 473 | /* GlRendererBuffer implementation */
|
---|
| 474 | /****************************************************************/
|
---|
| 475 |
|
---|
| 476 |
|
---|
| 477 |
|
---|
| 478 | GlRendererBuffer::GlRendererBuffer(SceneGraph *sceneGraph,
|
---|
| 479 | ViewCellsManager *viewcells,
|
---|
| 480 | KdTree *tree):
|
---|
| 481 | GlRenderer(sceneGraph, viewcells, tree)
|
---|
| 482 | {
|
---|
[1785] | 483 |
|
---|
| 484 | mPixelBuffer = NULL;
|
---|
| 485 |
|
---|
| 486 | // implement width and height in subclasses
|
---|
[1145] | 487 | }
|
---|
| 488 |
|
---|
| 489 |
|
---|
[997] | 490 | void
|
---|
| 491 | GlRendererBuffer::EvalQueryWithOcclusionQueries(
|
---|
| 492 | //RenderCostSample &sample
|
---|
| 493 | )
|
---|
| 494 | {
|
---|
| 495 | glDepthFunc(GL_LEQUAL);
|
---|
| 496 |
|
---|
| 497 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
| 498 | glDepthMask(GL_FALSE);
|
---|
[1000] | 499 |
|
---|
| 500 |
|
---|
| 501 | // simulate detectemptyviewspace using backface culling
|
---|
[1001] | 502 | if (mDetectEmptyViewSpace)
|
---|
[997] | 503 | {
|
---|
[1000] | 504 | glEnable(GL_CULL_FACE);
|
---|
[1001] | 505 | //cout << "culling" << endl;
|
---|
[1000] | 506 | }
|
---|
| 507 | else
|
---|
| 508 | {
|
---|
[1001] | 509 | //cout << "not culling" << endl;
|
---|
[1000] | 510 | glDisable(GL_CULL_FACE);
|
---|
[1001] | 511 | }
|
---|
[1000] | 512 |
|
---|
| 513 |
|
---|
[1001] | 514 | //const int numQ = 1;
|
---|
| 515 | const int numQ = (int)mOcclusionQueries.size();
|
---|
[1000] | 516 |
|
---|
[1001] | 517 | //glFinish();
|
---|
| 518 | #if 0
|
---|
[1000] | 519 | //-- now issue queries for all objects
|
---|
| 520 | for (int j = 0; j < (int)mObjects.size(); ++ j)
|
---|
[1001] | 521 | {
|
---|
| 522 | mOcclusionQueries[j]->BeginQuery();
|
---|
| 523 | RenderIntersectable(mObjects[j]);
|
---|
| 524 | mOcclusionQueries[j]->EndQuery();
|
---|
| 525 |
|
---|
| 526 | unsigned int pixelCount;
|
---|
| 527 |
|
---|
| 528 | pixelCount = mOcclusionQueries[j]->GetQueryResult();
|
---|
| 529 | mObjects[j]->mCounter += pixelCount;
|
---|
| 530 | }
|
---|
| 531 | #else
|
---|
| 532 |
|
---|
| 533 | int q = 0;
|
---|
| 534 |
|
---|
| 535 | //-- now issue queries for all objects
|
---|
| 536 | for (int j = 0; j < (int)mObjects.size(); j += q)
|
---|
[1000] | 537 | {
|
---|
[1001] | 538 | for (q = 0; ((j + q) < (int)mObjects.size()) && (q < numQ); ++ q)
|
---|
[997] | 539 | {
|
---|
[1000] | 540 | //glFinish();
|
---|
[1001] | 541 | mOcclusionQueries[q]->BeginQuery();
|
---|
[1000] | 542 |
|
---|
[997] | 543 | RenderIntersectable(mObjects[j + q]);
|
---|
[1000] | 544 |
|
---|
[1001] | 545 | mOcclusionQueries[q]->EndQuery();
|
---|
[1000] | 546 | //glFinish();
|
---|
[997] | 547 | }
|
---|
[1001] | 548 | //cout << "q: " << q << endl;
|
---|
[997] | 549 | // collect results of the queries
|
---|
[1001] | 550 | for (int t = 0; t < q; ++ t)
|
---|
[997] | 551 | {
|
---|
| 552 | unsigned int pixelCount;
|
---|
[1001] | 553 |
|
---|
[997] | 554 | //-- reenable other state
|
---|
[1001] | 555 | #if 0
|
---|
| 556 | bool available;
|
---|
| 557 |
|
---|
[997] | 558 | do
|
---|
| 559 | {
|
---|
[1001] | 560 | available = mOcclusionQueries[t]->ResultAvailable();
|
---|
| 561 |
|
---|
| 562 | if (!available) cout << "W";
|
---|
[997] | 563 | }
|
---|
[1001] | 564 | while (!available);
|
---|
[997] | 565 | #endif
|
---|
| 566 |
|
---|
[1001] | 567 | pixelCount = mOcclusionQueries[t]->GetQueryResult();
|
---|
[997] | 568 |
|
---|
[1001] | 569 | //if (pixelCount > 0)
|
---|
| 570 | // cout <<"o="<<j+q<<" q="<<mOcclusionQueries[q]->GetQueryId()<<" pc="<<pixelCount<<" ";
|
---|
| 571 | mObjects[j + t]->mCounter += pixelCount;
|
---|
[997] | 572 | }
|
---|
| 573 |
|
---|
[1001] | 574 | //j += q;
|
---|
[997] | 575 | }
|
---|
[1001] | 576 | #endif
|
---|
| 577 | //glFinish();
|
---|
[997] | 578 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 579 | glDepthMask(GL_TRUE);
|
---|
[1000] | 580 |
|
---|
| 581 | glEnable(GL_CULL_FACE);
|
---|
[997] | 582 | }
|
---|
| 583 |
|
---|
| 584 |
|
---|
| 585 | void
|
---|
[1931] | 586 | GlRenderer::RandomViewPoint()
|
---|
[1001] | 587 | {
|
---|
[589] | 588 | // do not use this function since it could return different viewpoints for
|
---|
| 589 | // different executions of the algorithm
|
---|
| 590 |
|
---|
[1112] | 591 | // mViewCellsManager->GetViewPoint(mViewPoint);
|
---|
[589] | 592 |
|
---|
| 593 | while (1) {
|
---|
| 594 | Vector3 pVector = Vector3(halton.GetNumber(1),
|
---|
| 595 | halton.GetNumber(2),
|
---|
| 596 | halton.GetNumber(3));
|
---|
| 597 |
|
---|
[1112] | 598 | mViewPoint = mViewCellsManager->GetViewSpaceBox().GetPoint(pVector);
|
---|
[589] | 599 | ViewCell *v = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
| 600 | if (v && v->GetValid())
|
---|
| 601 | break;
|
---|
| 602 | // generate a new vector
|
---|
| 603 | halton.GenerateNext();
|
---|
| 604 | }
|
---|
| 605 |
|
---|
| 606 | Vector3 dVector = Vector3(2*M_PI*halton.GetNumber(4),
|
---|
| 607 | M_PI*halton.GetNumber(5),
|
---|
| 608 | 0.0f);
|
---|
| 609 |
|
---|
| 610 | mViewDirection = Normalize(Vector3(sin(dVector.x),
|
---|
| 611 | // cos(dVector.y),
|
---|
| 612 | 0.0f,
|
---|
| 613 | cos(dVector.x)));
|
---|
| 614 | halton.GenerateNext();
|
---|
| 615 | }
|
---|
| 616 |
|
---|
| 617 |
|
---|
[1585] | 618 | void
|
---|
| 619 | GlRenderer::RenderBox(const AxisAlignedBox3 &box)
|
---|
| 620 | {
|
---|
| 621 |
|
---|
| 622 | glBegin(GL_LINE_LOOP);
|
---|
| 623 | glVertex3d(box.Min().x, box.Max().y, box.Min().z );
|
---|
| 624 | glVertex3d(box.Max().x, box.Max().y, box.Min().z );
|
---|
| 625 | glVertex3d(box.Max().x, box.Min().y, box.Min().z );
|
---|
| 626 | glVertex3d(box.Min().x, box.Min().y, box.Min().z );
|
---|
| 627 | glEnd();
|
---|
| 628 |
|
---|
| 629 | glBegin(GL_LINE_LOOP);
|
---|
| 630 | glVertex3d(box.Min().x, box.Min().y, box.Max().z );
|
---|
| 631 | glVertex3d(box.Max().x, box.Min().y, box.Max().z );
|
---|
| 632 | glVertex3d(box.Max().x, box.Max().y, box.Max().z );
|
---|
| 633 | glVertex3d(box.Min().x, box.Max().y, box.Max().z );
|
---|
| 634 | glEnd();
|
---|
| 635 |
|
---|
| 636 | glBegin(GL_LINE_LOOP);
|
---|
| 637 | glVertex3d(box.Max().x, box.Min().y, box.Min().z );
|
---|
| 638 | glVertex3d(box.Max().x, box.Min().y, box.Max().z );
|
---|
| 639 | glVertex3d(box.Max().x, box.Max().y, box.Max().z );
|
---|
| 640 | glVertex3d(box.Max().x, box.Max().y, box.Min().z );
|
---|
| 641 | glEnd();
|
---|
| 642 |
|
---|
| 643 | glBegin(GL_LINE_LOOP);
|
---|
| 644 | glVertex3d(box.Min().x, box.Min().y, box.Min().z );
|
---|
| 645 | glVertex3d(box.Min().x, box.Min().y, box.Max().z );
|
---|
| 646 | glVertex3d(box.Min().x, box.Max().y, box.Max().z );
|
---|
| 647 | glVertex3d(box.Min().x, box.Max().y, box.Min().z );
|
---|
| 648 | glEnd();
|
---|
| 649 |
|
---|
| 650 | glBegin(GL_LINE_LOOP);
|
---|
| 651 | glVertex3d(box.Min().x, box.Min().y, box.Min().z );
|
---|
| 652 | glVertex3d(box.Max().x, box.Min().y, box.Min().z );
|
---|
| 653 | glVertex3d(box.Max().x, box.Min().y, box.Max().z );
|
---|
| 654 | glVertex3d(box.Min().x, box.Min().y, box.Max().z );
|
---|
| 655 | glEnd();
|
---|
| 656 |
|
---|
| 657 | glBegin(GL_LINE_LOOP);
|
---|
| 658 | glVertex3d(box.Min().x, box.Max().y, box.Min().z );
|
---|
| 659 | glVertex3d(box.Max().x, box.Max().y, box.Min().z );
|
---|
| 660 | glVertex3d(box.Max().x, box.Max().y, box.Max().z );
|
---|
| 661 | glVertex3d(box.Min().x, box.Max().y, box.Max().z );
|
---|
| 662 |
|
---|
| 663 | glEnd();
|
---|
| 664 |
|
---|
[811] | 665 | }
|
---|
[1585] | 666 |
|
---|
| 667 | void
|
---|
| 668 | GlRenderer::RenderBvhNode(BvhNode *node)
|
---|
| 669 | {
|
---|
| 670 | if (node->IsLeaf()) {
|
---|
| 671 | BvhLeaf *leaf = (BvhLeaf *) node;
|
---|
[1785] | 672 |
|
---|
| 673 | #if 0
|
---|
| 674 | if (leaf->mGlList == 0) {
|
---|
| 675 | leaf->mGlList = glGenLists(1);
|
---|
| 676 | if (leaf->mGlList != 0)
|
---|
| 677 | glNewList(leaf->mGlList, GL_COMPILE);
|
---|
| 678 |
|
---|
| 679 | for (int i=0; i < leaf->mObjects.size(); i++)
|
---|
| 680 | RenderIntersectable(leaf->mObjects[i]);
|
---|
| 681 |
|
---|
| 682 | if (leaf->mGlList != 0)
|
---|
| 683 | glEndList();
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 | if (leaf->mGlList != 0)
|
---|
| 687 | glCallList(leaf->mGlList);
|
---|
| 688 | #else
|
---|
[1983] | 689 | for (int i=0; i < leaf->mObjects.size(); i++)
|
---|
| 690 | RenderIntersectable(leaf->mObjects[i]);
|
---|
[1785] | 691 | #endif
|
---|
[1585] | 692 | } else {
|
---|
| 693 | BvhInterior *in = (BvhInterior *)node;
|
---|
| 694 | RenderBvhNode(in->GetBack());
|
---|
| 695 | RenderBvhNode(in->GetFront());
|
---|
| 696 | }
|
---|
[1594] | 697 |
|
---|
| 698 | //cout << "leaf obj " << i << endl;
|
---|
| 699 |
|
---|
| 700 | }
|
---|
| 701 |
|
---|
| 702 | void
|
---|
| 703 | GlRenderer::RenderKdNode(KdNode *node)
|
---|
| 704 | {
|
---|
| 705 | if (node->IsLeaf()) {
|
---|
| 706 | KdLeaf *leaf = (KdLeaf *) node;
|
---|
| 707 | for (int i=0; i < leaf->mObjects.size(); i++) {
|
---|
| 708 | RenderIntersectable(leaf->mObjects[i]);
|
---|
| 709 | }
|
---|
| 710 | } else {
|
---|
| 711 | KdInterior *in = (KdInterior *)node;
|
---|
| 712 | RenderKdNode(in->mBack);
|
---|
| 713 | RenderKdNode(in->mFront);
|
---|
| 714 | }
|
---|
[1585] | 715 |
|
---|
| 716 | }
|
---|
| 717 |
|
---|
[1785] | 718 |
|
---|
| 719 |
|
---|
| 720 |
|
---|
| 721 |
|
---|
| 722 |
|
---|
| 723 |
|
---|
| 724 | void
|
---|
| 725 | GlRendererBuffer::EvalRenderCostSample(RenderCostSample &sample,
|
---|
| 726 | const bool useOcclusionQueries,
|
---|
| 727 | const int threshold
|
---|
| 728 | )
|
---|
| 729 | {
|
---|
| 730 | // choose a random view point
|
---|
| 731 | mViewCellsManager->GetViewPoint(mViewPoint);
|
---|
| 732 | sample.mPosition = mViewPoint;
|
---|
| 733 | //cout << "viewpoint: " << mViewPoint << endl;
|
---|
| 734 |
|
---|
| 735 | // take a render cost sample by rendering a cube
|
---|
| 736 | Vector3 directions[6];
|
---|
| 737 |
|
---|
| 738 | directions[0] = Vector3(1,0,0);
|
---|
| 739 | directions[1] = Vector3(0,1,0);
|
---|
| 740 | directions[2] = Vector3(0,0,1);
|
---|
| 741 | directions[3] = Vector3(-1,0,0);
|
---|
| 742 | directions[4] = Vector3(0,-1,0);
|
---|
| 743 | directions[5] = Vector3(0,0,-1);
|
---|
| 744 |
|
---|
| 745 | sample.mVisibleObjects = 0;
|
---|
| 746 |
|
---|
| 747 | // reset object counters
|
---|
| 748 | ObjectContainer::const_iterator it, it_end = mObjects.end();
|
---|
| 749 |
|
---|
| 750 | for (it = mObjects.begin(); it != it_end; ++ it)
|
---|
| 751 | {
|
---|
| 752 | (*it)->mCounter = 0;
|
---|
| 753 | }
|
---|
| 754 |
|
---|
| 755 | ++ mFrame;
|
---|
| 756 |
|
---|
| 757 | //glCullFace(GL_FRONT);
|
---|
| 758 | glCullFace(GL_BACK);
|
---|
| 759 | glDisable(GL_CULL_FACE);
|
---|
| 760 |
|
---|
| 761 |
|
---|
| 762 | // query all 6 directions for a full point sample
|
---|
| 763 | for (int i = 0; i < 6; ++ i)
|
---|
| 764 | {
|
---|
| 765 | mViewDirection = directions[i];
|
---|
| 766 | SetupCamera();
|
---|
| 767 |
|
---|
| 768 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
| 769 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 770 | //glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); glDepthMask(GL_TRUE);
|
---|
| 771 | glDepthFunc(GL_LESS);
|
---|
| 772 |
|
---|
| 773 | mUseFalseColors = true;
|
---|
| 774 |
|
---|
| 775 | // the actual scene rendering fills the depth (for occlusion queries)
|
---|
| 776 | // and the frame buffer (for item buffer)
|
---|
| 777 | RenderScene();
|
---|
| 778 |
|
---|
| 779 |
|
---|
| 780 | if (0)
|
---|
| 781 | {
|
---|
| 782 | char filename[256];
|
---|
| 783 | sprintf(filename, "snap/frame-%04d-%d.png", mFrame, i);
|
---|
| 784 | // QImage im = toImage();
|
---|
| 785 | // im.save(filename, "PNG");
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | // evaluate the sample
|
---|
| 789 | if (useOcclusionQueries)
|
---|
| 790 | {
|
---|
| 791 | EvalQueryWithOcclusionQueries();
|
---|
| 792 | }
|
---|
| 793 | else
|
---|
| 794 | {
|
---|
| 795 | EvalQueryWithItemBuffer();
|
---|
| 796 | }
|
---|
| 797 | }
|
---|
| 798 |
|
---|
| 799 | // now evaluate the statistics over that sample
|
---|
| 800 | // currently only the number of visible objects is taken into account
|
---|
| 801 | sample.Reset();
|
---|
| 802 |
|
---|
| 803 | for (it = mObjects.begin(); it != it_end; ++ it)
|
---|
| 804 | {
|
---|
| 805 | Intersectable *obj = *it;
|
---|
| 806 | if (obj->mCounter >= threshold)
|
---|
| 807 | {
|
---|
| 808 | ++ sample.mVisibleObjects;
|
---|
| 809 | sample.mVisiblePixels += obj->mCounter;
|
---|
| 810 | }
|
---|
| 811 | }
|
---|
| 812 |
|
---|
| 813 | //cout << "RS=" << sample.mVisibleObjects << " ";
|
---|
[1585] | 814 | }
|
---|
[1785] | 815 |
|
---|
| 816 |
|
---|
| 817 | GlRendererBuffer::~GlRendererBuffer()
|
---|
| 818 | {
|
---|
[1990] | 819 | #if 0
|
---|
| 820 | #ifdef USE_CG
|
---|
| 821 | if (sCgFragmentProgram)
|
---|
[1785] | 822 | cgDestroyProgram(sCgFragmentProgram);
|
---|
| 823 | if (sCgContext)
|
---|
| 824 | cgDestroyContext(sCgContext);
|
---|
| 825 | #endif
|
---|
[1990] | 826 | #endif
|
---|
[1785] | 827 | }
|
---|
| 828 |
|
---|
| 829 |
|
---|
| 830 | void
|
---|
| 831 | GlRendererBuffer::SampleRenderCost(const int numSamples,
|
---|
| 832 | vector<RenderCostSample> &samples,
|
---|
| 833 | const bool useOcclusionQueries,
|
---|
| 834 | const int threshold
|
---|
| 835 | )
|
---|
| 836 | {
|
---|
| 837 | MakeCurrent();
|
---|
| 838 |
|
---|
| 839 | if (mPixelBuffer == NULL)
|
---|
| 840 | mPixelBuffer = new unsigned int[GetWidth()*GetHeight()];
|
---|
| 841 |
|
---|
| 842 | // using 90 degree projection to capture 360 view with 6 samples
|
---|
| 843 | SetupProjection(GetHeight(), GetHeight(), 90.0f);
|
---|
| 844 |
|
---|
| 845 | //samples.resize(numSamples);
|
---|
| 846 | halton.Reset();
|
---|
| 847 |
|
---|
| 848 | // the number of queries queried in batch mode
|
---|
| 849 | const int numQ = 500;
|
---|
| 850 |
|
---|
| 851 | //const int numQ = (int)mObjects.size();
|
---|
| 852 | if (useOcclusionQueries)
|
---|
| 853 | {
|
---|
| 854 | cout << "\ngenerating " << numQ << " queries ... ";
|
---|
| 855 | OcclusionQuery::GenQueries(mOcclusionQueries, numQ);
|
---|
| 856 | cout << "finished" << endl;
|
---|
| 857 | }
|
---|
| 858 |
|
---|
| 859 | // sampling queries
|
---|
| 860 | for (int i = 0; i < numSamples; ++ i)
|
---|
| 861 | {
|
---|
| 862 | cout << ".";
|
---|
| 863 | EvalRenderCostSample(samples[i], useOcclusionQueries, threshold);
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | DoneCurrent();
|
---|
| 867 | }
|
---|
| 868 |
|
---|
| 869 |
|
---|
| 870 |
|
---|
| 871 |
|
---|
| 872 |
|
---|
| 873 | void
|
---|
[1931] | 874 | GlRenderer::ClearErrorBuffer()
|
---|
[1785] | 875 | {
|
---|
| 876 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
| 877 | mPvsErrorBuffer[i].mError = 1.0f;
|
---|
| 878 | }
|
---|
| 879 | }
|
---|
| 880 |
|
---|
| 881 |
|
---|
| 882 | void
|
---|
| 883 | GlRendererBuffer::EvalPvsStat()
|
---|
| 884 | {
|
---|
| 885 |
|
---|
| 886 | MakeCurrent();
|
---|
| 887 |
|
---|
[1931] | 888 | GlRenderer::EvalPvsStat();
|
---|
[1785] | 889 |
|
---|
| 890 | DoneCurrent();
|
---|
[1931] | 891 |
|
---|
[1785] | 892 | // mRenderingFinished.wakeAll();
|
---|
| 893 | }
|
---|
| 894 |
|
---|
| 895 |
|
---|
| 896 | void GlRendererBuffer::SampleBeamContributions(Intersectable *sourceObject,
|
---|
| 897 | Beam &beam,
|
---|
| 898 | const int desiredSamples,
|
---|
| 899 | BeamSampleStatistics &stat)
|
---|
| 900 | {
|
---|
| 901 | // TODO: should be moved out of here (not to be done every time)
|
---|
| 902 | // only back faces are interesting for the depth pass
|
---|
| 903 | glShadeModel(GL_FLAT);
|
---|
| 904 | glDisable(GL_LIGHTING);
|
---|
| 905 |
|
---|
| 906 | // needed to kill the fragments for the front buffer
|
---|
| 907 | glEnable(GL_ALPHA_TEST);
|
---|
| 908 | glAlphaFunc(GL_GREATER, 0);
|
---|
| 909 |
|
---|
| 910 | // assumes that the beam is constructed and contains kd-tree nodes
|
---|
| 911 | // and viewcells which it intersects
|
---|
| 912 |
|
---|
| 913 |
|
---|
| 914 | // Get the number of viewpoints to be sampled
|
---|
| 915 | // Now it is a sqrt but in general a wiser decision could be made.
|
---|
| 916 | // The less viewpoints the better for rendering performance, since less passes
|
---|
| 917 | // over the beam is needed.
|
---|
| 918 | // The viewpoints could actually be generated outside of the bounding box which
|
---|
| 919 | // would distribute the 'efective viewpoints' of the object surface and thus
|
---|
| 920 | // with a few viewpoints better sample the viewpoint space....
|
---|
| 921 |
|
---|
| 922 | //TODO: comment in
|
---|
| 923 | //int viewPointSamples = sqrt((float)desiredSamples);
|
---|
| 924 | int viewPointSamples = max(desiredSamples / (GetWidth() * GetHeight()), 1);
|
---|
| 925 |
|
---|
| 926 | // the number of direction samples per pass is given by the number of viewpoints
|
---|
| 927 | int directionalSamples = desiredSamples / viewPointSamples;
|
---|
| 928 |
|
---|
| 929 | Debug << "directional samples: " << directionalSamples << endl;
|
---|
| 930 | for (int i = 0; i < viewPointSamples; ++ i)
|
---|
| 931 | {
|
---|
| 932 | Vector3 viewPoint = beam.mBox.GetRandomPoint();
|
---|
| 933 |
|
---|
| 934 | // perhaps the viewpoint should be shifted back a little bit so that it always lies
|
---|
| 935 | // inside the source object
|
---|
| 936 | // 'ideally' the viewpoints would be distributed on the soureObject surface, but this
|
---|
| 937 | // would require more complicated sampling (perhaps hierarchical rejection sampling of
|
---|
| 938 | // the object surface is an option here - only the mesh faces which are inside the box
|
---|
| 939 | // are considered as candidates)
|
---|
| 940 |
|
---|
| 941 | SampleViewpointContributions(sourceObject,
|
---|
| 942 | viewPoint,
|
---|
| 943 | beam,
|
---|
| 944 | directionalSamples,
|
---|
| 945 | stat);
|
---|
| 946 | }
|
---|
| 947 |
|
---|
| 948 |
|
---|
| 949 | // note:
|
---|
| 950 | // this routine would be called only if the number of desired samples is sufficiently
|
---|
| 951 | // large - for other rss tree cells the cpu based sampling is perhaps more efficient
|
---|
| 952 | // distributing the work between cpu and gpu would also allow us to place more sophisticated
|
---|
| 953 | // sample distributions (silhouette ones) using the cpu and the jittered once on the GPU
|
---|
| 954 | // in order that thios scheme is working well the gpu render buffer should run in a separate
|
---|
| 955 | // thread than the cpu sampler, which would not be such a big problem....
|
---|
| 956 |
|
---|
| 957 | // disable alpha test again
|
---|
| 958 | glDisable(GL_ALPHA_TEST);
|
---|
| 959 | }
|
---|
| 960 |
|
---|
| 961 |
|
---|
| 962 |
|
---|
| 963 | void GlRendererBuffer::SampleViewpointContributions(Intersectable *sourceObject,
|
---|
| 964 | const Vector3 viewPoint,
|
---|
| 965 | Beam &beam,
|
---|
| 966 | const int samples,
|
---|
| 967 | BeamSampleStatistics &stat)
|
---|
| 968 | {
|
---|
| 969 | // 1. setup the view port to match the desired samples
|
---|
| 970 | glViewport(0, 0, samples, samples);
|
---|
| 971 |
|
---|
| 972 | // 2. setup the projection matrix and view matrix to match the viewpoint + beam.mDirBox
|
---|
| 973 | SetupProjectionForViewPoint(viewPoint, beam, sourceObject);
|
---|
| 974 |
|
---|
| 975 |
|
---|
| 976 | // 3. reset z-buffer to 0 and render the source object for the beam
|
---|
| 977 | // with glCullFace(Enabled) and glFrontFace(GL_CW)
|
---|
| 978 | // save result to the front depth map
|
---|
| 979 | // the front depth map holds ray origins
|
---|
| 980 |
|
---|
| 981 |
|
---|
| 982 | // front depth buffer must be initialised to 0
|
---|
| 983 | float clearDepth;
|
---|
| 984 |
|
---|
| 985 | glGetFloatv(GL_DEPTH_CLEAR_VALUE, &clearDepth);
|
---|
| 986 | glClearDepth(0.0f);
|
---|
| 987 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
---|
| 988 |
|
---|
| 989 |
|
---|
| 990 | // glFrontFace(GL_CCW);
|
---|
| 991 | glEnable(GL_CULL_FACE);
|
---|
| 992 | glCullFace(GL_FRONT);
|
---|
| 993 | glColorMask(0, 0, 0, 0);
|
---|
| 994 |
|
---|
| 995 |
|
---|
| 996 | // stencil is increased where the source object is located
|
---|
| 997 | glEnable(GL_STENCIL_TEST);
|
---|
| 998 | glStencilFunc(GL_ALWAYS, 0x1, 0x1);
|
---|
| 999 | glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
|
---|
| 1000 |
|
---|
| 1001 |
|
---|
| 1002 | #if 0
|
---|
| 1003 | static int glSourceObjList = -1;
|
---|
| 1004 | if (glSourceObjList != -1)
|
---|
| 1005 | {
|
---|
| 1006 | glSourceObjList = glGenLists(1);
|
---|
| 1007 | glNewList(glSourceObjList, GL_COMPILE);
|
---|
| 1008 |
|
---|
| 1009 | RenderIntersectable(sourceObject);
|
---|
| 1010 |
|
---|
| 1011 | glEndList();
|
---|
| 1012 | }
|
---|
| 1013 | glCallList(glSourceObjList);
|
---|
| 1014 |
|
---|
| 1015 | #else
|
---|
| 1016 | RenderIntersectable(sourceObject);
|
---|
| 1017 |
|
---|
| 1018 | #endif
|
---|
| 1019 |
|
---|
| 1020 | // copy contents of the front depth buffer into depth texture
|
---|
| 1021 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
| 1022 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
| 1023 |
|
---|
| 1024 | // reset clear function
|
---|
| 1025 | glClearDepth(clearDepth);
|
---|
| 1026 |
|
---|
| 1027 |
|
---|
| 1028 | // 4. set up the termination depth buffer (= standard depth buffer)
|
---|
| 1029 | // only rays which have non-zero entry in the origin buffer are valid since
|
---|
| 1030 | // they realy start on the object surface (this is tagged by setting a
|
---|
| 1031 | // stencil buffer bit at step 3).
|
---|
| 1032 |
|
---|
| 1033 | glStencilFunc(GL_EQUAL, 0x1, 0x1);
|
---|
| 1034 | glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
|
---|
| 1035 |
|
---|
| 1036 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 1037 | glDepthMask(1);
|
---|
| 1038 |
|
---|
| 1039 | glEnable(GL_DEPTH_TEST);
|
---|
| 1040 |
|
---|
| 1041 | glEnable(GL_CULL_FACE);
|
---|
| 1042 | glCullFace(GL_BACK);
|
---|
| 1043 |
|
---|
| 1044 | // setup front depth buffer
|
---|
| 1045 | glEnable(GL_TEXTURE_2D);
|
---|
| 1046 |
|
---|
[1990] | 1047 | #if 0
|
---|
| 1048 | #ifdef USE_CG
|
---|
[1785] | 1049 | // bind pixel shader implementing the front depth buffer functionality
|
---|
| 1050 | cgGLBindProgram(sCgFragmentProgram);
|
---|
| 1051 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
| 1052 | #endif
|
---|
[1990] | 1053 | #endif
|
---|
[1785] | 1054 | // 5. render all objects inside the beam
|
---|
| 1055 | // we can use id based false color to read them back for gaining the pvs
|
---|
| 1056 |
|
---|
| 1057 | glColorMask(1, 1, 1, 1);
|
---|
| 1058 |
|
---|
| 1059 |
|
---|
| 1060 | // if objects not stored in beam => extract objects
|
---|
| 1061 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
| 1062 | {
|
---|
| 1063 | vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
| 1064 |
|
---|
| 1065 | Intersectable::NewMail();
|
---|
| 1066 | for (it = beam.mKdNodes.begin(); it != it_end; ++ it)
|
---|
| 1067 | {
|
---|
| 1068 | mKdTree->CollectObjects(*it, beam.mObjects);
|
---|
| 1069 | }
|
---|
| 1070 | }
|
---|
| 1071 |
|
---|
| 1072 |
|
---|
| 1073 | // (objects can be compiled to a gl list now so that subsequent rendering for
|
---|
| 1074 | // this beam is fast - the same hold for step 3)
|
---|
| 1075 | // Afterwards we have two depth buffers defining the ray origin and termination
|
---|
| 1076 |
|
---|
| 1077 |
|
---|
| 1078 | #if 0
|
---|
| 1079 | static int glObjList = -1;
|
---|
| 1080 | if (glObjList != -1)
|
---|
| 1081 | {
|
---|
| 1082 | glObjList = glGenLists(1);
|
---|
| 1083 | glNewList(glObjList, GL_COMPILE);
|
---|
| 1084 |
|
---|
| 1085 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
| 1086 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
| 1087 | {
|
---|
| 1088 | // render all objects except the source object
|
---|
| 1089 | if (*it != sourceObject)
|
---|
| 1090 | RenderIntersectable(*it);
|
---|
| 1091 | }
|
---|
| 1092 |
|
---|
| 1093 | glEndList();
|
---|
| 1094 | }
|
---|
| 1095 |
|
---|
| 1096 | glCallList(glObjList);
|
---|
| 1097 | #else
|
---|
| 1098 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
| 1099 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
| 1100 | {
|
---|
| 1101 | // render all objects except the source object
|
---|
| 1102 | if (*it != sourceObject)
|
---|
| 1103 | RenderIntersectable(*it);
|
---|
| 1104 | }
|
---|
| 1105 | #endif
|
---|
| 1106 |
|
---|
[1935] | 1107 | // 6. Use occlusion queries for all viewcell meshes associated with the beam ->
|
---|
[1785] | 1108 | // a fragment passes if the corresponding stencil fragment is set and its depth is
|
---|
| 1109 | // between origin and termination buffer
|
---|
| 1110 |
|
---|
| 1111 | // create new queries if necessary
|
---|
| 1112 | OcclusionQuery::GenQueries(mOcclusionQueries, (int)beam.mViewCells.size());
|
---|
| 1113 |
|
---|
| 1114 | // check whether any backfacing polygon would pass the depth test?
|
---|
| 1115 | // matt: should check both back /front facing because of dual depth buffer
|
---|
| 1116 | // and danger of cutting the near plane with front facing polys.
|
---|
| 1117 |
|
---|
| 1118 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
| 1119 | glDepthMask(GL_FALSE);
|
---|
| 1120 | glDisable(GL_CULL_FACE);
|
---|
| 1121 |
|
---|
| 1122 |
|
---|
| 1123 | ViewCellContainer::const_iterator vit, vit_end = beam.mViewCells.end();
|
---|
| 1124 |
|
---|
| 1125 | int queryIdx = 0;
|
---|
| 1126 |
|
---|
| 1127 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
| 1128 | {
|
---|
| 1129 | mOcclusionQueries[queryIdx ++]->BeginQuery();
|
---|
| 1130 |
|
---|
| 1131 | RenderIntersectable(*vit);
|
---|
| 1132 |
|
---|
| 1133 | mOcclusionQueries[queryIdx]->EndQuery();
|
---|
| 1134 |
|
---|
| 1135 | ++ queryIdx;
|
---|
| 1136 | }
|
---|
| 1137 |
|
---|
| 1138 | // at this point, if possible, go and do some other computation
|
---|
| 1139 |
|
---|
| 1140 | // 7. The number of visible pixels is the number of sample rays which see the source
|
---|
| 1141 | // object from the corresponding viewcell -> remember these values for later update
|
---|
| 1142 | // of the viewcell pvs - or update immediately?
|
---|
| 1143 |
|
---|
| 1144 | queryIdx = 0;
|
---|
| 1145 |
|
---|
| 1146 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
| 1147 | {
|
---|
| 1148 | // fetch queries
|
---|
| 1149 | unsigned int pixelCount = mOcclusionQueries[queryIdx ++]->GetQueryResult();
|
---|
| 1150 |
|
---|
| 1151 | if (pixelCount)
|
---|
| 1152 | Debug << "view cell " << (*vit)->GetId() << " visible pixels: " << pixelCount << endl;
|
---|
| 1153 | }
|
---|
| 1154 |
|
---|
| 1155 |
|
---|
| 1156 | // 8. Copmpute rendering statistics
|
---|
| 1157 | // In general it is not neccessary to remember to extract all the rays cast. I hope it
|
---|
| 1158 | // would be sufficient to gain only the intergral statistics about the new contributions
|
---|
| 1159 | // and so the rss tree would actually store no new rays (only the initial ones)
|
---|
| 1160 | // the subdivision of the tree would only be driven by the statistics (the glrender could
|
---|
| 1161 | // evaluate the contribution entropy for example)
|
---|
| 1162 | // However might be an option to extract/store only those the rays which made a contribution
|
---|
| 1163 | // (new viewcell has been discovered) or relative contribution greater than a threshold ...
|
---|
| 1164 |
|
---|
| 1165 | ObjectContainer pvsObj;
|
---|
| 1166 | stat.pvsSize = ComputePvs(beam.mObjects, pvsObj);
|
---|
| 1167 |
|
---|
| 1168 | // to gain ray source and termination
|
---|
| 1169 | // copy contents of ray termination buffer into depth texture
|
---|
| 1170 | // and compare with ray source buffer
|
---|
| 1171 | #if 0
|
---|
| 1172 | VssRayContainer rays;
|
---|
| 1173 |
|
---|
| 1174 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
| 1175 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
| 1176 |
|
---|
| 1177 | ComputeRays(Intersectable *sourceObj, rays);
|
---|
| 1178 |
|
---|
| 1179 | #endif
|
---|
| 1180 |
|
---|
[1990] | 1181 | ////////
|
---|
[1785] | 1182 | //-- cleanup
|
---|
| 1183 |
|
---|
| 1184 | // reset gl state
|
---|
| 1185 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 1186 | glDepthMask(GL_TRUE);
|
---|
| 1187 | glEnable(GL_CULL_FACE);
|
---|
| 1188 | glDisable(GL_STENCIL_TEST);
|
---|
[1935] | 1189 |
|
---|
[1990] | 1190 | #if 0
|
---|
| 1191 | #ifdef USE_CG
|
---|
[1785] | 1192 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
| 1193 | #endif
|
---|
[1990] | 1194 | #endif
|
---|
| 1195 |
|
---|
[1785] | 1196 | glDisable(GL_TEXTURE_2D);
|
---|
| 1197 |
|
---|
| 1198 | // remove objects from beam
|
---|
| 1199 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
| 1200 | beam.mObjects.clear();
|
---|
| 1201 | }
|
---|
| 1202 |
|
---|
| 1203 |
|
---|
| 1204 | void GlRendererBuffer::SetupProjectionForViewPoint(const Vector3 &viewPoint,
|
---|
| 1205 | const Beam &beam,
|
---|
| 1206 | Intersectable *sourceObject)
|
---|
| 1207 | {
|
---|
| 1208 | float left, right, bottom, top, znear, zfar;
|
---|
| 1209 |
|
---|
| 1210 | beam.ComputePerspectiveFrustum(left, right, bottom, top, znear, zfar,
|
---|
| 1211 | mSceneGraph->GetBox());
|
---|
| 1212 |
|
---|
| 1213 | //Debug << left << " " << right << " " << bottom << " " << top << " " << znear << " " << zfar << endl;
|
---|
| 1214 | glMatrixMode(GL_PROJECTION);
|
---|
| 1215 | glLoadIdentity();
|
---|
| 1216 | glFrustum(left, right, bottom, top, znear, zfar);
|
---|
| 1217 | //glFrustum(-1, 1, -1, 1, 1, 20000);
|
---|
| 1218 |
|
---|
| 1219 | const Vector3 center = viewPoint + beam.GetMainDirection() * (zfar - znear) * 0.3f;
|
---|
| 1220 | const Vector3 up =
|
---|
| 1221 | Normalize(CrossProd(beam.mPlanes[0].mNormal, beam.mPlanes[4].mNormal));
|
---|
| 1222 |
|
---|
| 1223 | #ifdef GTP_DEBUG
|
---|
| 1224 | Debug << "view point: " << viewPoint << endl;
|
---|
| 1225 | Debug << "eye: " << center << endl;
|
---|
| 1226 | Debug << "up: " << up << endl;
|
---|
| 1227 | #endif
|
---|
| 1228 |
|
---|
| 1229 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1230 | glLoadIdentity();
|
---|
| 1231 | gluLookAt(viewPoint.x, viewPoint.y, viewPoint.z,
|
---|
| 1232 | center.x, center.y, center.z,
|
---|
| 1233 | up.x, up.y, up.z);
|
---|
| 1234 | }
|
---|
| 1235 |
|
---|
| 1236 |
|
---|
| 1237 | void GlRendererBuffer::InitGL()
|
---|
| 1238 | {
|
---|
[1990] | 1239 | MakeCurrent();
|
---|
| 1240 | GlRenderer::InitGL();
|
---|
[1785] | 1241 |
|
---|
| 1242 | // initialise dual depth buffer textures
|
---|
| 1243 | glGenTextures(1, &frontDepthMap);
|
---|
| 1244 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
| 1245 |
|
---|
| 1246 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
| 1247 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
| 1248 |
|
---|
| 1249 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
| 1250 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
| 1251 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
| 1252 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
| 1253 |
|
---|
| 1254 | glGenTextures(1, &backDepthMap);
|
---|
| 1255 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
| 1256 |
|
---|
| 1257 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
| 1258 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
| 1259 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
| 1260 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
| 1261 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
| 1262 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
| 1263 |
|
---|
[1990] | 1264 | #if 0
|
---|
| 1265 | #ifdef USE_CG
|
---|
| 1266 |
|
---|
[1785] | 1267 | // cg initialization
|
---|
| 1268 | cgSetErrorCallback(handleCgError);
|
---|
| 1269 | sCgContext = cgCreateContext();
|
---|
| 1270 |
|
---|
| 1271 | if (cgGLIsProfileSupported(CG_PROFILE_ARBFP1))
|
---|
| 1272 | sCgFragmentProfile = CG_PROFILE_ARBFP1;
|
---|
| 1273 | else
|
---|
| 1274 | {
|
---|
| 1275 | // try FP30
|
---|
| 1276 | if (cgGLIsProfileSupported(CG_PROFILE_FP30))
|
---|
| 1277 | sCgFragmentProfile = CG_PROFILE_FP30;
|
---|
| 1278 | else
|
---|
| 1279 | {
|
---|
| 1280 | Debug << "Neither arbfp1 or fp30 fragment profiles supported on this system" << endl;
|
---|
| 1281 | exit(1);
|
---|
| 1282 | }
|
---|
| 1283 | }
|
---|
| 1284 |
|
---|
| 1285 | sCgFragmentProgram = cgCreateProgramFromFile(sCgContext,
|
---|
| 1286 | CG_SOURCE, "../src/dual_depth.cg",
|
---|
| 1287 | sCgFragmentProfile,
|
---|
| 1288 | NULL,
|
---|
| 1289 | NULL);
|
---|
| 1290 |
|
---|
| 1291 | if (!cgIsProgramCompiled(sCgFragmentProgram))
|
---|
| 1292 | cgCompileProgram(sCgFragmentProgram);
|
---|
| 1293 |
|
---|
| 1294 | cgGLLoadProgram(sCgFragmentProgram);
|
---|
| 1295 | cgGLBindProgram(sCgFragmentProgram);
|
---|
| 1296 |
|
---|
| 1297 | Debug << "---- PROGRAM BEGIN ----\n" <<
|
---|
| 1298 | cgGetProgramString(sCgFragmentProgram, CG_COMPILED_PROGRAM) << "---- PROGRAM END ----\n";
|
---|
| 1299 |
|
---|
| 1300 | #endif
|
---|
| 1301 |
|
---|
| 1302 | #endif
|
---|
| 1303 | DoneCurrent();
|
---|
| 1304 | }
|
---|
| 1305 |
|
---|
| 1306 |
|
---|
| 1307 | void GlRendererBuffer::ComputeRays(Intersectable *sourceObj, VssRayContainer &rays)
|
---|
| 1308 | {
|
---|
| 1309 | for (int i = 0; i < depthMapSize * depthMapSize; ++ i)
|
---|
| 1310 | {
|
---|
| 1311 | //todo glGetTexImage()
|
---|
| 1312 | }
|
---|
| 1313 | }
|
---|
| 1314 |
|
---|
| 1315 |
|
---|
[1931] | 1316 | void
|
---|
| 1317 | GlRenderer::EvalPvsStat()
|
---|
| 1318 | {
|
---|
[1785] | 1319 |
|
---|
[1931] | 1320 | mPvsStat.Reset();
|
---|
| 1321 | halton.Reset();
|
---|
[1785] | 1322 |
|
---|
| 1323 |
|
---|
[1931] | 1324 | SetupProjection(GetWidth(), GetHeight());
|
---|
[1785] | 1325 |
|
---|
[1931] | 1326 | cout<<"mPvsStatFrames="<<mPvsStatFrames<<endl;
|
---|
| 1327 |
|
---|
| 1328 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
| 1329 | float err;
|
---|
| 1330 | // set frame id for saving the error buffer
|
---|
| 1331 | mFrame = i;
|
---|
| 1332 | RandomViewPoint();
|
---|
[1785] | 1333 |
|
---|
[1931] | 1334 | // atlanta problematic frames: 325 525 691 1543
|
---|
| 1335 | #if 0
|
---|
| 1336 | if (mFrame != 325 &&
|
---|
| 1337 | mFrame != 525 &&
|
---|
| 1338 | mFrame != 691 &&
|
---|
| 1339 | mFrame != 1543)
|
---|
| 1340 | mPvsErrorBuffer[i] = -1;
|
---|
| 1341 | else {
|
---|
| 1342 | Debug<<"frame ="<<mFrame<<" vp="<<mViewPoint<<" vd="<<mViewDirection<<endl;
|
---|
| 1343 | }
|
---|
| 1344 | #endif
|
---|
| 1345 |
|
---|
| 1346 | if (mPvsErrorBuffer[i].mError > 0.0f) {
|
---|
| 1347 | int pvsSize;
|
---|
[1785] | 1348 |
|
---|
| 1349 |
|
---|
[1931] | 1350 | float error = GetPixelError(pvsSize);
|
---|
| 1351 | mPvsErrorBuffer[i].mError = error;
|
---|
| 1352 | mPvsErrorBuffer[i].mPvsSize = pvsSize;
|
---|
[1785] | 1353 |
|
---|
[1931] | 1354 | // emit UpdatePvsErrorItem(i,
|
---|
| 1355 | // mPvsErrorBuffer[i]);
|
---|
[1785] | 1356 |
|
---|
[1931] | 1357 | cout<<"("<<i<<","<<mPvsErrorBuffer[i].mError<<")";
|
---|
| 1358 | // swapBuffers();
|
---|
| 1359 | }
|
---|
| 1360 |
|
---|
| 1361 | err = mPvsErrorBuffer[i].mError;
|
---|
| 1362 |
|
---|
| 1363 | if (err >= 0.0f) {
|
---|
| 1364 | if (err > mPvsStat.maxError)
|
---|
| 1365 | mPvsStat.maxError = err;
|
---|
| 1366 | mPvsStat.sumError += err;
|
---|
| 1367 | mPvsStat.sumPvsSize += mPvsErrorBuffer[i].mPvsSize;
|
---|
| 1368 |
|
---|
| 1369 | if (err == 0.0f)
|
---|
| 1370 | mPvsStat.errorFreeFrames++;
|
---|
| 1371 | mPvsStat.frames++;
|
---|
| 1372 | }
|
---|
| 1373 | }
|
---|
[1785] | 1374 |
|
---|
[1931] | 1375 | glFinish();
|
---|
| 1376 | cout<<endl<<flush;
|
---|
| 1377 |
|
---|
[1785] | 1378 | }
|
---|
[1931] | 1379 |
|
---|
| 1380 |
|
---|
| 1381 | float
|
---|
| 1382 | GlRenderer::GetPixelError(int &pvsSize)
|
---|
| 1383 | {
|
---|
| 1384 | float pErrorPixels = -1.0f;
|
---|
| 1385 |
|
---|
| 1386 | glReadBuffer(GL_BACK);
|
---|
| 1387 |
|
---|
| 1388 | // mUseFalseColors = true;
|
---|
| 1389 |
|
---|
| 1390 | mUseFalseColors = false;
|
---|
| 1391 | unsigned int pixelCount;
|
---|
| 1392 |
|
---|
| 1393 | //static int query = -1;
|
---|
| 1394 | //if (query == -1)
|
---|
| 1395 | // glGenOcclusionQueriesNV(1, (unsigned int *)&query);
|
---|
| 1396 |
|
---|
| 1397 | OcclusionQuery query;
|
---|
| 1398 |
|
---|
| 1399 | ViewCell *viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
| 1400 | if (viewcell == NULL)
|
---|
| 1401 | return 0.0f;
|
---|
| 1402 |
|
---|
| 1403 | if (mDetectEmptyViewSpace) {
|
---|
| 1404 | // now check whether any backfacing polygon would pass the depth test
|
---|
| 1405 | SetupCamera();
|
---|
| 1406 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 1407 | glEnable( GL_CULL_FACE );
|
---|
| 1408 | glCullFace(GL_BACK);
|
---|
| 1409 |
|
---|
| 1410 | cout<<"RS ";
|
---|
| 1411 | RenderScene();
|
---|
| 1412 |
|
---|
| 1413 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
| 1414 | glDepthMask(GL_FALSE);
|
---|
| 1415 | glDisable( GL_CULL_FACE );
|
---|
| 1416 |
|
---|
| 1417 | query.BeginQuery();
|
---|
| 1418 |
|
---|
| 1419 | cout<<"RS ";
|
---|
| 1420 | RenderScene();
|
---|
| 1421 | cout<<"RS3 ";
|
---|
| 1422 |
|
---|
| 1423 | query.EndQuery();
|
---|
| 1424 |
|
---|
| 1425 | // at this point, if possible, go and do some other computation
|
---|
| 1426 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 1427 | glDepthMask(GL_TRUE);
|
---|
| 1428 | glEnable( GL_CULL_FACE );
|
---|
| 1429 |
|
---|
| 1430 | // reenable other state
|
---|
| 1431 | pixelCount = query.GetQueryResult();
|
---|
| 1432 | cout<<"RS4 ";
|
---|
| 1433 |
|
---|
| 1434 | if (pixelCount > 0)
|
---|
| 1435 | return -1.0f; // backfacing polygon found -> not a valid viewspace sample
|
---|
| 1436 |
|
---|
| 1437 | } else
|
---|
| 1438 | glDisable( GL_CULL_FACE );
|
---|
| 1439 |
|
---|
| 1440 |
|
---|
| 1441 | // ViewCell *viewcell = NULL;
|
---|
| 1442 |
|
---|
| 1443 | // PrVs prvs;
|
---|
| 1444 |
|
---|
| 1445 | // mViewCellsManager->SetMaxFilterSize(0);
|
---|
| 1446 | // mViewCellsManager->GetPrVS(mViewPoint, prvs, mViewCellsManager->GetFilterWidth());
|
---|
| 1447 | // viewcell = prvs.mViewCell;
|
---|
| 1448 |
|
---|
| 1449 | ObjectPvs pvs;
|
---|
| 1450 | if (1) {
|
---|
| 1451 | pvs = viewcell->GetPvs();
|
---|
| 1452 | } else {
|
---|
| 1453 | mViewCellsManager->ApplyFilter2(viewcell,
|
---|
| 1454 | false,
|
---|
| 1455 | 1.0f,
|
---|
| 1456 | pvs);
|
---|
| 1457 | }
|
---|
| 1458 |
|
---|
| 1459 | SetupCamera();
|
---|
| 1460 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 1461 | glColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);
|
---|
| 1462 |
|
---|
| 1463 |
|
---|
| 1464 | // // Render PVS
|
---|
| 1465 | ObjectPvsIterator it = pvs.GetIterator();
|
---|
| 1466 |
|
---|
| 1467 | pvsSize = pvs.GetSize();
|
---|
| 1468 | Intersectable::NewMail();
|
---|
| 1469 | for (; it.HasMoreEntries(); ) {
|
---|
| 1470 | ObjectPvsEntry entry = it.Next();
|
---|
| 1471 | Intersectable *object = entry.mObject;
|
---|
| 1472 | RenderIntersectable(object);
|
---|
| 1473 | }
|
---|
| 1474 |
|
---|
| 1475 | // glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
| 1476 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 1477 |
|
---|
| 1478 | mUseFalseColors = true;
|
---|
| 1479 |
|
---|
| 1480 | query.BeginQuery();
|
---|
| 1481 |
|
---|
| 1482 | SetupCamera();
|
---|
| 1483 |
|
---|
| 1484 | RenderScene();
|
---|
| 1485 |
|
---|
| 1486 | query.EndQuery();
|
---|
| 1487 |
|
---|
| 1488 |
|
---|
| 1489 | // reenable other state
|
---|
| 1490 | pixelCount = query.GetQueryResult();
|
---|
| 1491 |
|
---|
| 1492 |
|
---|
| 1493 | pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());
|
---|
| 1494 |
|
---|
| 1495 | #if 0
|
---|
| 1496 | if (mSnapErrorFrames && pErrorPixels > 0.001f) {
|
---|
| 1497 |
|
---|
| 1498 | char filename[256];
|
---|
| 1499 | sprintf(filename, "error-frame-%04d-%0.5f.png", mFrame, pErrorPixels);
|
---|
| 1500 | QImage im = toImage();
|
---|
| 1501 | string str = mSnapPrefix + filename;
|
---|
| 1502 | QString qstr(str.c_str());
|
---|
| 1503 |
|
---|
| 1504 | im.save(qstr, "PNG");
|
---|
| 1505 | if (1) { //0 && mFrame == 1543) {
|
---|
| 1506 | int x,y;
|
---|
| 1507 | int lastIndex = -1;
|
---|
| 1508 | for (y=0; y < im.height(); y++)
|
---|
| 1509 | for (x=0; x < im.width(); x++) {
|
---|
| 1510 | QRgb p = im.pixel(x,y);
|
---|
| 1511 | int index = qRed(p) + (qGreen(p)<<8) + (qBlue(p)<<16);
|
---|
| 1512 | if (qGreen(p) != 255 && index!=0) {
|
---|
| 1513 | if (index != lastIndex) {
|
---|
| 1514 | // Debug<<"ei="<<index<<" ";
|
---|
| 1515 | lastIndex = index;
|
---|
| 1516 | }
|
---|
| 1517 | }
|
---|
| 1518 | }
|
---|
| 1519 | }
|
---|
| 1520 |
|
---|
| 1521 |
|
---|
| 1522 | mUseFalseColors = false;
|
---|
| 1523 | glPushAttrib(GL_CURRENT_BIT);
|
---|
| 1524 | glColor3f(0,1,0);
|
---|
| 1525 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 1526 | SetupCamera();
|
---|
| 1527 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 1528 |
|
---|
| 1529 | // Render PVS
|
---|
| 1530 | Intersectable::NewMail();
|
---|
| 1531 |
|
---|
| 1532 | ObjectPvsIterator it = pvs.GetIterator();
|
---|
| 1533 | for (; it.HasMoreEntries(); ) {
|
---|
| 1534 | ObjectPvsEntry entry = it.Next();
|
---|
| 1535 | Intersectable *object = entry.mObject;
|
---|
| 1536 | RenderIntersectable(object);
|
---|
| 1537 | }
|
---|
| 1538 |
|
---|
| 1539 | im = toImage();
|
---|
| 1540 | sprintf(filename, "error-frame-%04d-%0.5f-pvs.png", mFrame, pErrorPixels);
|
---|
| 1541 | str = mSnapPrefix + filename;
|
---|
| 1542 | qstr = str.c_str();
|
---|
| 1543 | im.save(qstr, "PNG");
|
---|
| 1544 | glPopAttrib();
|
---|
| 1545 | }
|
---|
| 1546 | #endif
|
---|
| 1547 |
|
---|
| 1548 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
| 1549 |
|
---|
| 1550 | return pErrorPixels;
|
---|
| 1551 | }
|
---|
| 1552 |
|
---|
[1983] | 1553 | void
|
---|
| 1554 | GlRenderer::RenderViewPoint()
|
---|
| 1555 | {
|
---|
| 1556 | mWireFrame = true;
|
---|
| 1557 | glPushMatrix();
|
---|
| 1558 | glTranslatef(mViewPoint.x, mViewPoint.y, mViewPoint.z);
|
---|
| 1559 | glScalef(5.0f,5.0f,5.0f);
|
---|
| 1560 | glPushAttrib(GL_CURRENT_BIT);
|
---|
| 1561 | glColor3f(1.0f, 0.0f, 0.0f);
|
---|
| 1562 | gluSphere((::GLUquadric *)mSphere,
|
---|
| 1563 | 1e-3*Magnitude(mViewCellsManager->GetViewSpaceBox().Size()), 6, 6);
|
---|
| 1564 | glPopAttrib();
|
---|
| 1565 | glPopMatrix();
|
---|
| 1566 | mWireFrame = false;
|
---|
| 1567 | }
|
---|
[1931] | 1568 |
|
---|
| 1569 |
|
---|
| 1570 |
|
---|
| 1571 |
|
---|
| 1572 | }
|
---|