1 | #include "Mesh.h"
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2 | #include "GlRenderer.h"
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3 | #include "ViewCellsManager.h"
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4 | #include "SceneGraph.h"
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5 | #include "Pvs.h"
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6 | #include "Viewcell.h"
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7 | #include "Beam.h"
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8 | #include "KdTree.h"
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9 | #include "Environment.h"
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10 |
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11 | #include <GL/glext.h>
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12 | #include <Cg/cg.h>
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13 | #include <Cg/cgGL.h>
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14 |
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15 | #include <QVBoxLayout>
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16 |
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17 | static CGcontext sCgContext = NULL;
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18 | static CGprogram sCgFragmentProgram = NULL;
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19 | static CGprofile sCgFragmentProfile;
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20 |
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21 | GLuint frontDepthMap;
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22 | GLuint backDepthMap;
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23 |
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24 | const int depthMapSize = 512;
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25 | static vector<int> sQueries;
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26 |
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27 | GlRendererWidget *rendererWidget = NULL;
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28 | GlDebuggerWidget *debuggerWidget = NULL;
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29 |
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30 |
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31 | #ifdef _WIN32
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32 | PFNGLGENOCCLUSIONQUERIESNVPROC glGenOcclusionQueriesNV;
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33 | PFNGLBEGINOCCLUSIONQUERYNVPROC glBeginOcclusionQueryNV;
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34 | PFNGLENDOCCLUSIONQUERYNVPROC glEndOcclusionQueryNV;
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35 | PFNGLGETOCCLUSIONQUERYUIVNVPROC glGetOcclusionQueryuivNV;
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36 | #endif
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37 |
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38 | GlRenderer::GlRenderer(SceneGraph *sceneGraph,
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39 | ViewCellsManager *viewCellsManager,
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40 | KdTree *tree):
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41 | Renderer(sceneGraph, viewCellsManager),
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42 | mKdTree(tree)
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43 | {
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44 | mSceneGraph->CollectObjects(&mObjects);
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45 | mViewPoint = mSceneGraph->GetBox().Center();
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46 | mViewDirection = Vector3(0,0,1);
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47 |
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48 | // timerId = startTimer(10);
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49 | // debug coords for atlanta
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50 | // mViewPoint = Vector3(3473, 6.778, -1699);
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51 | // mViewDirection = Vector3(-0.2432, 0, 0.97);
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52 |
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53 | mFrame = 0;
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54 | mWireFrame = false;
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55 | environment->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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56 | mSnapErrorFrames = true;
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57 | mSnapPrefix = "snap/";
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58 | mUseForcedColors = false;
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59 | }
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60 |
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61 | GlRenderer::~GlRenderer()
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62 | {
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63 | cerr<<"gl renderer destructor..\n";
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64 | if (sCgFragmentProgram)
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65 | cgDestroyProgram(sCgFragmentProgram);
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66 | if (sCgContext)
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67 | cgDestroyContext(sCgContext);
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68 | cerr<<"done."<<endl;
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69 | }
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70 |
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71 |
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72 | static void handleCgError()
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73 | {
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74 | Debug << "Cg error: " << cgGetErrorString(cgGetError()) << endl;
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75 | exit(1);
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76 | }
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77 |
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78 | void
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79 | GlRenderer::RenderIntersectable(Intersectable *object)
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80 | {
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81 |
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82 | glPushAttrib(GL_CURRENT_BIT);
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83 | if (mUseFalseColors)
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84 | SetupFalseColor(object->mId);
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85 |
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86 |
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87 | switch (object->Type()) {
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88 | case Intersectable::MESH_INSTANCE:
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89 | RenderMeshInstance((MeshInstance *)object);
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90 | break;
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91 | case Intersectable::VIEW_CELL:
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92 | RenderViewCell(dynamic_cast<ViewCell *>(object));
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93 | break;
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94 | default:
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95 | cerr<<"Rendering this object not yet implemented\n";
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96 | break;
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97 | }
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98 |
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99 | glPopAttrib();
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100 | }
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101 |
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102 |
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103 | void
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104 | GlRenderer::RenderViewCell(ViewCell *vc)
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105 | {
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106 | if (vc->GetMesh()) {
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107 |
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108 | if (!mUseFalseColors) {
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109 | if (vc->GetValid())
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110 | glColor3f(0,1,0);
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111 | else
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112 | glColor3f(0,0,1);
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113 | }
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114 |
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115 | RenderMesh(vc->GetMesh());
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116 | } else {
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117 | // render viewcells in the subtree
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118 | if (!vc->IsLeaf()) {
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119 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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120 |
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121 | ViewCellContainer::iterator it = vci->mChildren.begin();
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122 | for (; it != vci->mChildren.end(); ++it) {
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123 | RenderViewCell(*it);
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124 | }
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125 | } else {
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126 | // cerr<<"Empty viewcell mesh\n";
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127 | }
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128 | }
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129 | }
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130 |
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131 |
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132 | void
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133 | GlRenderer::RenderMeshInstance(MeshInstance *mi)
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134 | {
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135 | RenderMesh(mi->GetMesh());
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136 | }
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137 |
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138 | void
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139 | GlRenderer::SetupFalseColor(const int id)
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140 | {
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141 | // swap bits of the color
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142 |
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143 | glColor3ub(id&255, (id>>8)&255, (id>>16)&255);
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144 | }
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145 |
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146 |
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147 | int GlRenderer::GetId(int r, int g, int b) const
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148 | {
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149 | return r + (g << 8) + (b << 16);
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150 | }
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151 |
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152 | void
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153 | GlRenderer::SetupMaterial(Material *m)
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154 | {
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155 | if (m)
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156 | glColor3fv(&(m->mDiffuseColor.r));
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157 | }
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158 |
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159 | void
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160 | GlRenderer::RenderMesh(Mesh *mesh)
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161 | {
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162 | int i = 0;
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163 |
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164 | if (!mUseFalseColors && !mUseForcedColors)
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165 | SetupMaterial(mesh->mMaterial);
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166 |
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167 | for (i=0; i < mesh->mFaces.size(); i++) {
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168 | if (mWireFrame)
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169 | glBegin(GL_LINE_LOOP);
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170 | else
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171 | glBegin(GL_POLYGON);
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172 |
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173 | Face *face = mesh->mFaces[i];
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174 | for (int j = 0; j < face->mVertexIndices.size(); j++) {
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175 | glVertex3fv(&mesh->mVertices[face->mVertexIndices[j]].x);
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176 | }
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177 | glEnd();
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178 | }
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179 | }
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180 |
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181 | void
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182 | GlRenderer::InitGL()
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183 | {
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184 | glMatrixMode(GL_PROJECTION);
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185 | glLoadIdentity();
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186 |
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187 | glMatrixMode(GL_MODELVIEW);
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188 | glLoadIdentity();
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189 |
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190 | glEnable(GL_CULL_FACE);
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191 | glShadeModel(GL_FLAT);
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192 | glEnable(GL_DEPTH_TEST);
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193 | glEnable(GL_CULL_FACE);
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194 |
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195 | glGenOcclusionQueriesNV = (PFNGLGENOCCLUSIONQUERIESNVPROC)
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196 | wglGetProcAddress("glGenOcclusionQueriesNV");
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197 | glBeginOcclusionQueryNV = (PFNGLBEGINOCCLUSIONQUERYNVPROC)
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198 | wglGetProcAddress("glBeginOcclusionQueryNV");
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199 | glEndOcclusionQueryNV = (PFNGLENDOCCLUSIONQUERYNVPROC)
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200 | wglGetProcAddress("glEndOcclusionQueryNV");
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201 | glGetOcclusionQueryuivNV = (PFNGLGETOCCLUSIONQUERYUIVNVPROC)
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202 | wglGetProcAddress("glGetOcclusionQueryuivNV");
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203 |
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204 |
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205 |
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206 | #if 0
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207 | GLfloat mat_ambient[] = { 0.5, 0.5, 0.5, 1.0 };
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208 | /* mat_specular and mat_shininess are NOT default values */
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209 | GLfloat mat_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
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210 | GLfloat mat_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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211 | GLfloat mat_shininess[] = { 1.0 };
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212 |
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213 | GLfloat light_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
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214 | GLfloat light_diffuse[] = { 0.4, 0.4, 0.4, 1.0 };
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215 | GLfloat light_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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216 |
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217 | GLfloat lmodel_ambient[] = { 0.3, 0.3, 0.3, 1.0 };
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218 |
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219 |
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220 | // default Material
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221 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
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222 | glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
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223 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
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224 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
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225 |
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226 | // a light
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227 | glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
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228 | glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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229 | glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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230 |
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231 | glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
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232 | glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
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233 | glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);
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234 |
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235 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
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236 |
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237 | glEnable(GL_LIGHTING);
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238 | glEnable(GL_LIGHT0);
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239 | glEnable(GL_LIGHT1);
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240 |
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241 |
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242 | // set position of the light
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243 | GLfloat infinite_light[] = { 1.0, 0.8, 1.0, 0.0 };
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244 | glLightfv (GL_LIGHT0, GL_POSITION, infinite_light);
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245 |
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246 | // set position of the light2
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247 | GLfloat infinite_light2[] = { -0.3, 1.5, 1.0, 0.0 };
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248 | glLightfv (GL_LIGHT1, GL_POSITION, infinite_light2);
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249 |
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250 | glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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251 | // glColorMaterial( GL_FRONT_AND_BACK, GL_SPECULAR);
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252 | glEnable(GL_COLOR_MATERIAL);
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253 |
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254 | glShadeModel( GL_FLAT );
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255 |
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256 | glDepthFunc( GL_LESS );
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257 | glEnable( GL_DEPTH_TEST );
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258 | #endif
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259 |
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260 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
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261 |
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262 | glEnable( GL_NORMALIZE );
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263 |
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264 | glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
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265 | }
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266 |
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267 | void
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268 | GlRendererWidget::RenderInfo()
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269 | {
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270 | QString s;
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271 | int vc = 0;
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272 | if (mViewCellsManager)
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273 | vc = mViewCellsManager->GetViewCells().size();
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274 | int filter = 0;
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275 | if (mViewCellsManager)
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276 | filter = mViewCellsManager->GetMaxFilterSize();
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277 |
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278 | s.sprintf("frame:%04d viewpoint:(%4.1f,%4.1f,%4.1f) dir:(%4.1f,%4.1f,%4.1f) viewcells:%04d filter:%04d pvs:%04d error:%5.5f\%",
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279 | mFrame,
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280 | mViewPoint.x,
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281 | mViewPoint.y,
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282 | mViewPoint.z,
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283 | mViewDirection.x,
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284 | mViewDirection.y,
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285 | mViewDirection.z,
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286 | vc,
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287 |
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288 | filter,
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289 | mPvsSize,
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290 | mRenderError*100.0f
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291 | );
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292 |
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293 | glColor3f(0.0f,0.0f,0.0f);
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294 | renderText(0,20,s);
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295 |
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296 | if (mShowRenderCost) {
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297 | static vector<float> costFunction;
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298 | static float maxCost = -1;
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299 | if (costFunction.size()==0) {
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300 | ViewCellsTree *tree = mViewCellsManager->GetViewCellsTree();
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301 | if (tree) {
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302 | tree->GetCostFunction(costFunction);
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303 | maxCost = -1;
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304 | for (int i=0; i < costFunction.size(); i++) {
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305 | // cout<<i<<":"<<costFunction[i]<<" ";
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306 | if (costFunction[i] > maxCost)
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307 | maxCost = costFunction[i];
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308 | }
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309 | }
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310 | }
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311 |
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312 |
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313 | int currentPos = mViewCellsManager->GetViewCells().size();
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314 | float currentCost=-1;
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315 |
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316 | if (currentPos < costFunction.size())
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317 | currentCost = costFunction[currentPos];
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318 | #if 0
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319 | cout<<"costFunction.size()="<<costFunction.size()<<endl;
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320 | cout<<"CP="<<currentPos<<endl;
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321 | cout<<"MC="<<maxCost<<endl;
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322 | cout<<"CC="<<currentCost<<endl;
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323 | #endif
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324 | if (costFunction.size()) {
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325 | glDisable(GL_DEPTH_TEST);
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326 | // init ortographic projection
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327 | glMatrixMode(GL_PROJECTION);
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328 | glPushMatrix();
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329 |
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330 | glLoadIdentity();
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331 | gluOrtho2D(0, 1.0f, 0, 1.0f);
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332 |
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333 | glTranslatef(0.1f, 0.1f, 0.0f);
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334 | glScalef(0.8f, 0.8f, 1.0f);
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335 | glMatrixMode(GL_MODELVIEW);
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336 | glLoadIdentity();
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337 |
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338 | glColor3f(1.0f,0,0);
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339 | glBegin(GL_LINE_STRIP);
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340 | // glVertex3f(0,0,0);
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341 |
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342 | for (int i=0; i < costFunction.size(); i++) {
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343 | float x = i/(float)costFunction.size();
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344 | float y = costFunction[i]/(maxCost*0.5f);
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345 | glVertex3f(x,y,0.0f);
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346 | }
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347 | glEnd();
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348 |
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349 | glColor3f(1.0f,0,0);
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350 | glBegin(GL_LINES);
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351 | float x = currentPos/(float)costFunction.size();
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352 | glVertex3f(x,0.0,0.0f);
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353 | glVertex3f(x,1.0f,0.0f);
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354 | glEnd();
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355 |
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356 | glColor3f(0.0f,0,0);
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357 | // show a grid
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358 | glBegin(GL_LINE_LOOP);
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359 | glVertex3f(0,0,0.0f);
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360 | glVertex3f(1,0,0.0f);
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361 | glVertex3f(1,1,0.0f);
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362 | glVertex3f(0,1,0.0f);
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363 | glEnd();
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364 |
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365 | glBegin(GL_LINES);
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366 | for (int i=0; i < 50000 && i < costFunction.size(); i+=10000) {
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367 | float x = i/(float)costFunction.size();
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368 | glVertex3f(x,0.0,0.0f);
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369 | glVertex3f(x,1.0f,0.0f);
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370 | }
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371 |
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372 | for (int i=0; i < maxCost; i+=100) {
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373 | float y = i/(maxCost*0.5f);
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374 | glVertex3f(0,y,0.0f);
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375 | glVertex3f(1,y,0.0f);
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376 | }
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377 |
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378 | glEnd();
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379 |
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380 |
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381 | // restore the projection matrix
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382 | glMatrixMode(GL_PROJECTION);
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383 | glPopMatrix();
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384 | glMatrixMode(GL_MODELVIEW);
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385 | glEnable(GL_DEPTH_TEST);
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386 |
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387 | }
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388 | }
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389 | }
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390 |
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391 |
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392 | void
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393 | GlRenderer::SetupProjection(const int w, const int h)
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394 | {
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395 | glViewport(0, 0, w, h);
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396 | glMatrixMode(GL_PROJECTION);
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397 | glLoadIdentity();
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398 | gluPerspective(70.0, 1.0, 0.1, 2.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
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399 | glMatrixMode(GL_MODELVIEW);
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400 | }
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401 |
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402 | void
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403 | GlRenderer::SetupCamera()
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404 | {
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405 | Vector3 target = mViewPoint + mViewDirection;
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406 | Vector3 up(0,1,0);
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407 |
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408 | glLoadIdentity();
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409 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
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410 | target.x, target.y, target.z,
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411 | up.x, up.y, up.z);
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412 | }
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413 |
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414 | void
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415 | GlRendererBuffer::RandomViewPoint()
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416 | {
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417 |
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418 |
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419 | // do not use this function since it could return different viewpoints for
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420 | // different executions of the algorithm
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421 |
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422 | //mViewCellsManager->GetViewPoint(mViewPoint);
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423 |
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424 | while (1) {
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425 | Vector3 pVector = Vector3(halton.GetNumber(1),
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426 | halton.GetNumber(2),
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427 | halton.GetNumber(3));
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428 |
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429 | mViewPoint = mSceneGraph->GetBox().GetPoint(pVector);
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430 | ViewCell *v = mViewCellsManager->GetViewCell(mViewPoint);
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431 | if (v && v->GetValid())
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432 | break;
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433 | // generate a new vector
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434 | halton.GenerateNext();
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435 | }
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436 |
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437 |
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438 | Vector3 dVector = Vector3(2*M_PI*halton.GetNumber(4),
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439 | M_PI*halton.GetNumber(5),
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440 | 0.0f);
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441 |
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442 | mViewDirection = Normalize(Vector3(sin(dVector.x),
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443 | // cos(dVector.y),
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444 | 0.0f,
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445 | cos(dVector.x)));
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446 | halton.GenerateNext();
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447 | }
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448 |
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449 |
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450 | GlRendererBuffer::GlRendererBuffer(const int w,
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451 | const int h,
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452 | SceneGraph *sceneGraph,
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453 | ViewCellsManager *viewcells,
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454 | KdTree *tree):
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455 | QGLPixelBuffer(QSize(w, h)), GlRenderer(sceneGraph, viewcells, tree) {
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456 |
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457 | environment->GetIntValue("Preprocessor.pvsRenderErrorSamples", mPvsStatFrames);
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458 | mPvsErrorBuffer.resize(mPvsStatFrames);
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459 | ClearErrorBuffer();
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460 |
|
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461 | InitGL();
|
---|
462 |
|
---|
463 | }
|
---|
464 |
|
---|
465 | float
|
---|
466 | GlRendererBuffer::GetPixelError(int &pvsSize)
|
---|
467 | {
|
---|
468 | float pErrorPixels = -1.0f;
|
---|
469 |
|
---|
470 | glReadBuffer(GL_BACK);
|
---|
471 |
|
---|
472 | // mUseFalseColors = true;
|
---|
473 |
|
---|
474 | mUseFalseColors = false;
|
---|
475 |
|
---|
476 | static int query = -1;
|
---|
477 | unsigned int pixelCount;
|
---|
478 |
|
---|
479 | if (query == -1)
|
---|
480 | glGenOcclusionQueriesNV(1, (unsigned int *)&query);
|
---|
481 |
|
---|
482 | if (mDetectEmptyViewSpace) {
|
---|
483 | // now check whether any backfacing polygon would pass the depth test
|
---|
484 | SetupCamera();
|
---|
485 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
486 | glEnable( GL_CULL_FACE );
|
---|
487 |
|
---|
488 | RenderScene();
|
---|
489 |
|
---|
490 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
491 | glDepthMask(GL_FALSE);
|
---|
492 | glDisable( GL_CULL_FACE );
|
---|
493 |
|
---|
494 | glBeginOcclusionQueryNV(query);
|
---|
495 |
|
---|
496 | RenderScene();
|
---|
497 |
|
---|
498 | glEndOcclusionQueryNV();
|
---|
499 |
|
---|
500 | // at this point, if possible, go and do some other computation
|
---|
501 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
502 | glDepthMask(GL_TRUE);
|
---|
503 | glEnable( GL_CULL_FACE );
|
---|
504 |
|
---|
505 | // reenable other state
|
---|
506 | glGetOcclusionQueryuivNV(query,
|
---|
507 | GL_PIXEL_COUNT_NV,
|
---|
508 | &pixelCount);
|
---|
509 |
|
---|
510 | if (pixelCount > 0)
|
---|
511 | return -1.0f; // backfacing polygon found -> not a valid viewspace sample
|
---|
512 | } else
|
---|
513 | glDisable( GL_CULL_FACE );
|
---|
514 |
|
---|
515 |
|
---|
516 | ViewCell *viewcell = NULL;
|
---|
517 |
|
---|
518 | PrVs prvs;
|
---|
519 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
520 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
521 | viewcell = prvs.mViewCell;
|
---|
522 |
|
---|
523 | // ViewCell *viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
524 | pvsSize = 0;
|
---|
525 | if (viewcell) {
|
---|
526 | SetupCamera();
|
---|
527 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
528 |
|
---|
529 | glColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);
|
---|
530 |
|
---|
531 | // Render PVS
|
---|
532 | std::map<Intersectable *,
|
---|
533 | PvsData<Intersectable *>,
|
---|
534 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
535 |
|
---|
536 | pvsSize = viewcell->GetPvs().mEntries.size();
|
---|
537 |
|
---|
538 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
539 | Intersectable *object = (*it).first;
|
---|
540 | RenderIntersectable(object);
|
---|
541 | }
|
---|
542 |
|
---|
543 | // glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
544 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
545 | mUseFalseColors = true;
|
---|
546 |
|
---|
547 | glBeginOcclusionQueryNV(query);
|
---|
548 |
|
---|
549 | SetupCamera();
|
---|
550 |
|
---|
551 | RenderScene();
|
---|
552 |
|
---|
553 | glEndOcclusionQueryNV();
|
---|
554 |
|
---|
555 |
|
---|
556 | unsigned int pixelCount;
|
---|
557 | // reenable other state
|
---|
558 | glGetOcclusionQueryuivNV(query,
|
---|
559 | GL_PIXEL_COUNT_NV,
|
---|
560 | &pixelCount);
|
---|
561 |
|
---|
562 | pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());
|
---|
563 | if (mSnapErrorFrames && pErrorPixels > 0.01) {
|
---|
564 |
|
---|
565 | char filename[256];
|
---|
566 | sprintf(filename, "error-frame-%04d-%0.5f.png", mFrame, pErrorPixels);
|
---|
567 | QImage im = toImage();
|
---|
568 | im.save(mSnapPrefix + filename, "PNG");
|
---|
569 | if (1) { //0 && mFrame == 1543) {
|
---|
570 | int x,y;
|
---|
571 | int lastIndex = -1;
|
---|
572 | for (y=0; y < im.height(); y++)
|
---|
573 | for (x=0; x < im.width(); x++) {
|
---|
574 | QRgb p = im.pixel(x,y);
|
---|
575 | int index = qRed(p) + (qGreen(p)<<8) + (qBlue(p)<<16);
|
---|
576 | if (qGreen(p) != 255 && index!=0) {
|
---|
577 | if (index != lastIndex) {
|
---|
578 | Debug<<"ei="<<index<<" ";
|
---|
579 | lastIndex = index;
|
---|
580 | }
|
---|
581 | }
|
---|
582 | }
|
---|
583 | }
|
---|
584 |
|
---|
585 |
|
---|
586 | mUseFalseColors = false;
|
---|
587 | glPushAttrib(GL_CURRENT_BIT);
|
---|
588 | glColor3f(0,1,0);
|
---|
589 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
590 | SetupCamera();
|
---|
591 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
592 |
|
---|
593 | // Render PVS
|
---|
594 | std::map<Intersectable *,
|
---|
595 | PvsData<Intersectable *>,
|
---|
596 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
597 |
|
---|
598 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
599 | Intersectable *object = (*it).first;
|
---|
600 | RenderIntersectable(object);
|
---|
601 | }
|
---|
602 |
|
---|
603 | im = toImage();
|
---|
604 | sprintf(filename, "error-frame-%04d-%0.5f-pvs.png", mFrame, pErrorPixels);
|
---|
605 | im.save(mSnapPrefix + filename, "PNG");
|
---|
606 | glPopAttrib();
|
---|
607 | }
|
---|
608 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
609 | }
|
---|
610 |
|
---|
611 | if (viewcell)
|
---|
612 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
613 |
|
---|
614 | return pErrorPixels;
|
---|
615 | }
|
---|
616 |
|
---|
617 |
|
---|
618 | void
|
---|
619 | GlRendererWidget::SetupProjection(const int w, const int h)
|
---|
620 | {
|
---|
621 | if (!mTopView)
|
---|
622 | GlRenderer::SetupProjection(w, h);
|
---|
623 | else {
|
---|
624 | glViewport(0, 0, w, h);
|
---|
625 | glMatrixMode(GL_PROJECTION);
|
---|
626 | glLoadIdentity();
|
---|
627 | gluPerspective(50.0, 1.0, 0.1, 20.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
|
---|
628 | glMatrixMode(GL_MODELVIEW);
|
---|
629 | }
|
---|
630 | }
|
---|
631 |
|
---|
632 | void
|
---|
633 | GlRendererWidget::RenderPvs()
|
---|
634 | {
|
---|
635 | SetupCamera();
|
---|
636 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
637 |
|
---|
638 | ViewCell *viewcell;
|
---|
639 | // viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
640 |
|
---|
641 | PrVs prvs;
|
---|
642 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
643 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
644 | viewcell = prvs.mViewCell;
|
---|
645 |
|
---|
646 | if (viewcell) {
|
---|
647 | ObjectPvs &pvs = viewcell->GetPvs();
|
---|
648 |
|
---|
649 | // read back the texture
|
---|
650 | std::map<Intersectable *,
|
---|
651 | PvsData<Intersectable *>,
|
---|
652 | LtSample<Intersectable *> >::const_iterator it = pvs.mEntries.begin();
|
---|
653 |
|
---|
654 | mPvsSize = pvs.mEntries.size();
|
---|
655 |
|
---|
656 | for (; it != pvs.mEntries.end(); ++ it) {
|
---|
657 | Intersectable *object = (*it).first;
|
---|
658 | float visibility = log10((*it).second.mSumPdf + 1)/5.0f;
|
---|
659 | glColor3f(visibility, 0.0f, 0.0f);
|
---|
660 | mUseForcedColors = true;
|
---|
661 | RenderIntersectable(object);
|
---|
662 | mUseForcedColors = false;
|
---|
663 | }
|
---|
664 |
|
---|
665 | if (mRenderFilter) {
|
---|
666 | mWireFrame = true;
|
---|
667 | RenderIntersectable(viewcell);
|
---|
668 | mWireFrame = false;
|
---|
669 | }
|
---|
670 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
671 | } else {
|
---|
672 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
673 | for (; oi != mObjects.end(); oi++)
|
---|
674 | RenderIntersectable(*oi);
|
---|
675 | }
|
---|
676 | }
|
---|
677 |
|
---|
678 | float
|
---|
679 | GlRendererWidget::RenderErrors()
|
---|
680 | {
|
---|
681 | float pErrorPixels = -1.0f;
|
---|
682 |
|
---|
683 | glReadBuffer(GL_BACK);
|
---|
684 |
|
---|
685 | mUseFalseColors = true;
|
---|
686 |
|
---|
687 | SetupCamera();
|
---|
688 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
689 |
|
---|
690 | double eq[4];
|
---|
691 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
692 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
693 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
694 | eq[3] = mSceneCutPlane.mD;
|
---|
695 |
|
---|
696 | if (mCutScene) {
|
---|
697 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
698 | glEnable(GL_CLIP_PLANE0);
|
---|
699 | }
|
---|
700 |
|
---|
701 | if (mDetectEmptyViewSpace)
|
---|
702 | glEnable( GL_CULL_FACE );
|
---|
703 | else
|
---|
704 | glDisable( GL_CULL_FACE );
|
---|
705 |
|
---|
706 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
707 | for (; oi != mObjects.end(); oi++)
|
---|
708 | RenderIntersectable(*oi);
|
---|
709 |
|
---|
710 | ViewCell *viewcell;
|
---|
711 | // viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
712 |
|
---|
713 | PrVs prvs;
|
---|
714 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
715 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
716 | viewcell = prvs.mViewCell;
|
---|
717 |
|
---|
718 | QImage im1, im2;
|
---|
719 | QImage diff;
|
---|
720 |
|
---|
721 | if (viewcell) {
|
---|
722 | // read back the texture
|
---|
723 | im1 = grabFrameBuffer(true);
|
---|
724 |
|
---|
725 | SetupCamera();
|
---|
726 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
727 |
|
---|
728 | std::map<Intersectable *,
|
---|
729 | PvsData<Intersectable *>,
|
---|
730 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
731 |
|
---|
732 | mPvsSize = viewcell->GetPvs().mEntries.size();
|
---|
733 |
|
---|
734 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
735 | Intersectable *object = (*it).first;
|
---|
736 | RenderIntersectable(object);
|
---|
737 | }
|
---|
738 |
|
---|
739 | // read back the texture
|
---|
740 | im2 = grabFrameBuffer(true);
|
---|
741 |
|
---|
742 | diff = im1;
|
---|
743 | int x, y;
|
---|
744 | int errorPixels = 0;
|
---|
745 |
|
---|
746 | for (y = 0; y < im1.height(); y++)
|
---|
747 | for (x = 0; x < im1.width(); x++)
|
---|
748 | if (im1.pixel(x, y) == im2.pixel(x, y))
|
---|
749 | diff.setPixel(x, y, qRgba(0,0,0,0));
|
---|
750 | else {
|
---|
751 | diff.setPixel(x, y, qRgba(255,128,128,255));
|
---|
752 | errorPixels++;
|
---|
753 | }
|
---|
754 | pErrorPixels = ((float)errorPixels)/(im1.height()*im1.width());
|
---|
755 | }
|
---|
756 |
|
---|
757 | // now render the pvs again
|
---|
758 | SetupCamera();
|
---|
759 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
760 | mUseFalseColors = false;
|
---|
761 |
|
---|
762 | oi = mObjects.begin();
|
---|
763 | for (; oi != mObjects.end(); oi++)
|
---|
764 | RenderIntersectable(*oi);
|
---|
765 |
|
---|
766 | // now render im1
|
---|
767 | if (viewcell) {
|
---|
768 | if (0 && mTopView) {
|
---|
769 | mWireFrame = true;
|
---|
770 | RenderIntersectable(viewcell);
|
---|
771 | mWireFrame = false;
|
---|
772 | }
|
---|
773 |
|
---|
774 | // init ortographic projection
|
---|
775 | glMatrixMode(GL_PROJECTION);
|
---|
776 | glPushMatrix();
|
---|
777 |
|
---|
778 | glLoadIdentity();
|
---|
779 | gluOrtho2D(0, 1.0f, 0, 1.0f);
|
---|
780 |
|
---|
781 | glMatrixMode(GL_MODELVIEW);
|
---|
782 | glLoadIdentity();
|
---|
783 |
|
---|
784 | bindTexture(diff);
|
---|
785 |
|
---|
786 | glPushAttrib(GL_ENABLE_BIT);
|
---|
787 | glEnable( GL_ALPHA_TEST );
|
---|
788 | glDisable( GL_CULL_FACE );
|
---|
789 | glAlphaFunc( GL_GREATER, 0.5 );
|
---|
790 |
|
---|
791 | glEnable( GL_TEXTURE_2D );
|
---|
792 | glBegin(GL_QUADS);
|
---|
793 |
|
---|
794 | glTexCoord2f(0,0);
|
---|
795 | glVertex3f(0,0,0);
|
---|
796 |
|
---|
797 | glTexCoord2f(1,0);
|
---|
798 | glVertex3f( 1, 0, 0);
|
---|
799 |
|
---|
800 | glTexCoord2f(1,1);
|
---|
801 | glVertex3f( 1, 1, 0);
|
---|
802 |
|
---|
803 | glTexCoord2f(0,1);
|
---|
804 | glVertex3f(0, 1, 0);
|
---|
805 | glEnd();
|
---|
806 |
|
---|
807 | glPopAttrib();
|
---|
808 |
|
---|
809 | // restore the projection matrix
|
---|
810 | glMatrixMode(GL_PROJECTION);
|
---|
811 | glPopMatrix();
|
---|
812 | glMatrixMode(GL_MODELVIEW);
|
---|
813 | }
|
---|
814 |
|
---|
815 | glDisable(GL_CLIP_PLANE0);
|
---|
816 |
|
---|
817 | if (viewcell)
|
---|
818 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
819 |
|
---|
820 | mRenderError = pErrorPixels;
|
---|
821 | return pErrorPixels;
|
---|
822 | }
|
---|
823 |
|
---|
824 |
|
---|
825 | bool
|
---|
826 | GlRenderer::RenderScene()
|
---|
827 | {
|
---|
828 | static int glList = -1;
|
---|
829 | if (glList == -1)
|
---|
830 | {
|
---|
831 | glList = glGenLists(1);
|
---|
832 | glNewList(glList, GL_COMPILE);
|
---|
833 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
834 | for (; oi != mObjects.end(); oi++)
|
---|
835 | RenderIntersectable(*oi);
|
---|
836 | glEndList();
|
---|
837 | }
|
---|
838 |
|
---|
839 | glCallList(glList);
|
---|
840 |
|
---|
841 | return true;
|
---|
842 | }
|
---|
843 |
|
---|
844 |
|
---|
845 | void
|
---|
846 | GlRendererBuffer::ClearErrorBuffer()
|
---|
847 | {
|
---|
848 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
849 | mPvsErrorBuffer[i].mError = 1.0f;
|
---|
850 | }
|
---|
851 | }
|
---|
852 |
|
---|
853 |
|
---|
854 | void
|
---|
855 | GlRendererBuffer::EvalPvsStat()
|
---|
856 | {
|
---|
857 | mPvsStat.Reset();
|
---|
858 | halton.Reset();
|
---|
859 |
|
---|
860 | makeCurrent();
|
---|
861 | SetupProjection(GetWidth(), GetHeight());
|
---|
862 |
|
---|
863 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
864 | float err;
|
---|
865 | // set frame id for saving the error buffer
|
---|
866 | mFrame = i;
|
---|
867 | RandomViewPoint();
|
---|
868 |
|
---|
869 | // atlanta problematic frames: 325 525 691 1543
|
---|
870 | #if 0
|
---|
871 | if (mFrame != 325 &&
|
---|
872 | mFrame != 525 &&
|
---|
873 | mFrame != 691 &&
|
---|
874 | mFrame != 1543)
|
---|
875 | mPvsErrorBuffer[i] = -1;
|
---|
876 | else {
|
---|
877 | Debug<<"frame ="<<mFrame<<" vp="<<mViewPoint<<" vd="<<mViewDirection<<endl;
|
---|
878 | }
|
---|
879 | #endif
|
---|
880 | if (mPvsErrorBuffer[i].mError > 0.0f) {
|
---|
881 | int pvsSize;
|
---|
882 | float error = GetPixelError(pvsSize);
|
---|
883 | mPvsErrorBuffer[i].mError = error;
|
---|
884 | mPvsErrorBuffer[i].mPvsSize = pvsSize;
|
---|
885 |
|
---|
886 | emit UpdatePvsErrorItem(i,
|
---|
887 | mPvsErrorBuffer[i]);
|
---|
888 |
|
---|
889 | cout<<"("<<i<<","<<mPvsErrorBuffer[i].mError<<")";
|
---|
890 | // swapBuffers();
|
---|
891 | }
|
---|
892 |
|
---|
893 | err = mPvsErrorBuffer[i].mError;
|
---|
894 |
|
---|
895 | if (err >= 0.0f) {
|
---|
896 | if (err > mPvsStat.maxError)
|
---|
897 | mPvsStat.maxError = err;
|
---|
898 | mPvsStat.sumError += err;
|
---|
899 | mPvsStat.sumPvsSize += mPvsErrorBuffer[i].mPvsSize;
|
---|
900 |
|
---|
901 | if (err == 0.0f)
|
---|
902 | mPvsStat.errorFreeFrames++;
|
---|
903 | mPvsStat.frames++;
|
---|
904 | }
|
---|
905 | }
|
---|
906 |
|
---|
907 | glFinish();
|
---|
908 | doneCurrent();
|
---|
909 |
|
---|
910 | cout<<endl<<flush;
|
---|
911 | // mRenderingFinished.wakeAll();
|
---|
912 | }
|
---|
913 |
|
---|
914 |
|
---|
915 |
|
---|
916 |
|
---|
917 |
|
---|
918 | void
|
---|
919 | GlRendererWidget::mousePressEvent(QMouseEvent *e)
|
---|
920 | {
|
---|
921 | int x = e->pos().x();
|
---|
922 | int y = e->pos().y();
|
---|
923 |
|
---|
924 | mousePoint.x = x;
|
---|
925 | mousePoint.y = y;
|
---|
926 |
|
---|
927 | }
|
---|
928 |
|
---|
929 | void
|
---|
930 | GlRendererWidget::mouseMoveEvent(QMouseEvent *e)
|
---|
931 | {
|
---|
932 | float MOVE_SENSITIVITY = Magnitude(mSceneGraph->GetBox().Diagonal())*1e-3;
|
---|
933 | float TURN_SENSITIVITY=0.1f;
|
---|
934 | float TILT_SENSITIVITY=32.0 ;
|
---|
935 | float TURN_ANGLE= M_PI/36.0 ;
|
---|
936 |
|
---|
937 | int x = e->pos().x();
|
---|
938 | int y = e->pos().y();
|
---|
939 |
|
---|
940 | if (e->modifiers() & Qt::ControlModifier) {
|
---|
941 | mViewPoint.y += (y-mousePoint.y)*MOVE_SENSITIVITY/2.0;
|
---|
942 | mViewPoint.x += (x-mousePoint.x)*MOVE_SENSITIVITY/2.0;
|
---|
943 | } else {
|
---|
944 | mViewPoint += mViewDirection*((mousePoint.y - y)*MOVE_SENSITIVITY);
|
---|
945 | float adiff = TURN_ANGLE*(x - mousePoint.x)*-TURN_SENSITIVITY;
|
---|
946 | float angle = atan2(mViewDirection.x, mViewDirection.z);
|
---|
947 | mViewDirection.x = sin(angle+adiff);
|
---|
948 | mViewDirection.z = cos(angle+adiff);
|
---|
949 | }
|
---|
950 |
|
---|
951 | mousePoint.x = x;
|
---|
952 | mousePoint.y = y;
|
---|
953 |
|
---|
954 | updateGL();
|
---|
955 | }
|
---|
956 |
|
---|
957 | void
|
---|
958 | GlRendererWidget::mouseReleaseEvent(QMouseEvent *)
|
---|
959 | {
|
---|
960 |
|
---|
961 |
|
---|
962 | }
|
---|
963 |
|
---|
964 | void
|
---|
965 | GlRendererWidget::resizeGL(int w, int h)
|
---|
966 | {
|
---|
967 | SetupProjection(w, h);
|
---|
968 | updateGL();
|
---|
969 | }
|
---|
970 |
|
---|
971 | void
|
---|
972 | GlRendererWidget::paintGL()
|
---|
973 | {
|
---|
974 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
975 |
|
---|
976 |
|
---|
977 | if (!mRenderViewCells) {
|
---|
978 | if (mRenderErrors)
|
---|
979 | RenderErrors();
|
---|
980 | else
|
---|
981 | RenderPvs();
|
---|
982 | RenderInfo();
|
---|
983 | } else {
|
---|
984 | RenderViewCells();
|
---|
985 |
|
---|
986 | mWireFrame = true;
|
---|
987 | RenderScene();
|
---|
988 | mWireFrame = false;
|
---|
989 |
|
---|
990 | RenderInfo();
|
---|
991 | }
|
---|
992 |
|
---|
993 | mFrame++;
|
---|
994 | }
|
---|
995 |
|
---|
996 |
|
---|
997 | void
|
---|
998 | GlRendererWidget::SetupCamera()
|
---|
999 | {
|
---|
1000 | if (!mTopView)
|
---|
1001 | GlRenderer::SetupCamera();
|
---|
1002 | else {
|
---|
1003 | if (0) {
|
---|
1004 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*0.05;
|
---|
1005 | Vector3 pos = mViewPoint - dist*Vector3(mViewDirection.x,
|
---|
1006 | -1,
|
---|
1007 | mViewDirection.y);
|
---|
1008 |
|
---|
1009 | Vector3 target = mViewPoint + dist*mViewDirection;
|
---|
1010 | Vector3 up(0,1,0);
|
---|
1011 |
|
---|
1012 | glLoadIdentity();
|
---|
1013 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1014 | target.x, target.y, target.z,
|
---|
1015 | up.x, up.y, up.z);
|
---|
1016 | } else {
|
---|
1017 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*mTopDistance;
|
---|
1018 | Vector3 pos = mViewPoint + dist*Vector3(0,
|
---|
1019 | 1,
|
---|
1020 | 0);
|
---|
1021 |
|
---|
1022 | Vector3 target = mViewPoint;
|
---|
1023 | Vector3 up(mViewDirection.x, 0, mViewDirection.z);
|
---|
1024 |
|
---|
1025 | glLoadIdentity();
|
---|
1026 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1027 | target.x, target.y, target.z,
|
---|
1028 | up.x, up.y, up.z);
|
---|
1029 |
|
---|
1030 | }
|
---|
1031 | }
|
---|
1032 |
|
---|
1033 | }
|
---|
1034 |
|
---|
1035 | void
|
---|
1036 | GlRendererWidget::keyPressEvent ( QKeyEvent * e )
|
---|
1037 | {
|
---|
1038 | switch (e->key()) {
|
---|
1039 | case Qt::Key_T:
|
---|
1040 | mTopView = !mTopView;
|
---|
1041 | SetupProjection(width(), height());
|
---|
1042 | updateGL();
|
---|
1043 | break;
|
---|
1044 | case Qt::Key_V:
|
---|
1045 | mRenderViewCells = !mRenderViewCells;
|
---|
1046 | updateGL();
|
---|
1047 | break;
|
---|
1048 | default:
|
---|
1049 | e->ignore();
|
---|
1050 | break;
|
---|
1051 | }
|
---|
1052 | }
|
---|
1053 |
|
---|
1054 |
|
---|
1055 | RendererControlWidget::RendererControlWidget(QWidget * parent, Qt::WFlags f):
|
---|
1056 | QWidget(parent, f)
|
---|
1057 | {
|
---|
1058 |
|
---|
1059 | QVBoxLayout *vl = new QVBoxLayout;
|
---|
1060 | setLayout(vl);
|
---|
1061 |
|
---|
1062 | QWidget *vbox = new QGroupBox("ViewCells", this);
|
---|
1063 | layout()->addWidget(vbox);
|
---|
1064 |
|
---|
1065 | vl = new QVBoxLayout;
|
---|
1066 | vbox->setLayout(vl);
|
---|
1067 |
|
---|
1068 | QLabel *label = new QLabel("Granularity");
|
---|
1069 | vbox->layout()->addWidget(label);
|
---|
1070 |
|
---|
1071 | QSlider *slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1072 | vl->addWidget(slider);
|
---|
1073 | slider->show();
|
---|
1074 | slider->setRange(1, 10000);
|
---|
1075 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1076 | slider->setValue(200);
|
---|
1077 |
|
---|
1078 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetViewCellGranularity(int)));
|
---|
1079 |
|
---|
1080 | label = new QLabel("Filter size");
|
---|
1081 | vbox->layout()->addWidget(label);
|
---|
1082 |
|
---|
1083 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1084 | vbox->layout()->addWidget(slider);
|
---|
1085 | slider->show();
|
---|
1086 | slider->setRange(1, 100);
|
---|
1087 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1088 | slider->setValue(3);
|
---|
1089 |
|
---|
1090 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetVisibilityFilterSize(int)));
|
---|
1091 |
|
---|
1092 |
|
---|
1093 |
|
---|
1094 | QWidget *hbox = new QWidget(vbox);
|
---|
1095 | vl->addWidget(hbox);
|
---|
1096 | QHBoxLayout *hlayout = new QHBoxLayout;
|
---|
1097 | hbox->setLayout(hlayout);
|
---|
1098 |
|
---|
1099 | QCheckBox *cb = new QCheckBox("Show viewcells", hbox);
|
---|
1100 | hlayout->addWidget(cb);
|
---|
1101 | cb->setChecked(false);
|
---|
1102 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowViewCells(bool)));
|
---|
1103 |
|
---|
1104 | cb = new QCheckBox("Show render cost", hbox);
|
---|
1105 | hlayout->addWidget(cb);
|
---|
1106 | cb->setChecked(false);
|
---|
1107 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowRenderCost(bool)));
|
---|
1108 |
|
---|
1109 | cb = new QCheckBox("Show pvs sizes", hbox);
|
---|
1110 | hlayout->addWidget(cb);
|
---|
1111 | cb->setChecked(false);
|
---|
1112 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowPvsSizes(bool)));
|
---|
1113 |
|
---|
1114 | vbox->resize(800,100);
|
---|
1115 |
|
---|
1116 |
|
---|
1117 | vbox = new QGroupBox("Rendering", this);
|
---|
1118 | layout()->addWidget(vbox);
|
---|
1119 |
|
---|
1120 | vl = new QVBoxLayout;
|
---|
1121 | vbox->setLayout(vl);
|
---|
1122 |
|
---|
1123 |
|
---|
1124 |
|
---|
1125 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1126 | vbox->layout()->addWidget(slider);
|
---|
1127 | slider->show();
|
---|
1128 | slider->setRange(0, 1000);
|
---|
1129 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1130 | slider->setValue(1000);
|
---|
1131 |
|
---|
1132 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSceneCut(int)));
|
---|
1133 |
|
---|
1134 | cb = new QCheckBox("Render errors", vbox);
|
---|
1135 | vbox->layout()->addWidget(cb);
|
---|
1136 | cb->setChecked(false);
|
---|
1137 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderErrors(bool)));
|
---|
1138 |
|
---|
1139 | cb = new QCheckBox("Render filter", vbox);
|
---|
1140 | vbox->layout()->addWidget(cb);
|
---|
1141 | cb->setChecked(true);
|
---|
1142 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderFilter(bool)));
|
---|
1143 |
|
---|
1144 | cb = new QCheckBox("Cut view cells", vbox);
|
---|
1145 | vbox->layout()->addWidget(cb);
|
---|
1146 | cb->setChecked(false);
|
---|
1147 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutViewCells(bool)));
|
---|
1148 |
|
---|
1149 | cb = new QCheckBox("Cut scene", vbox);
|
---|
1150 | vbox->layout()->addWidget(cb);
|
---|
1151 | cb->setChecked(false);
|
---|
1152 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutScene(bool)));
|
---|
1153 |
|
---|
1154 |
|
---|
1155 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1156 | vbox->layout()->addWidget(slider);
|
---|
1157 | slider->show();
|
---|
1158 | slider->setRange(1, 1000);
|
---|
1159 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1160 | slider->setValue(500);
|
---|
1161 |
|
---|
1162 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTopDistance(int)));
|
---|
1163 |
|
---|
1164 | cb = new QCheckBox("Top View", vbox);
|
---|
1165 | vbox->layout()->addWidget(cb);
|
---|
1166 | cb->setChecked(false);
|
---|
1167 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetTopView(bool)));
|
---|
1168 |
|
---|
1169 | vbox = new QGroupBox("PVS Errors", this);
|
---|
1170 | layout()->addWidget(vbox);
|
---|
1171 |
|
---|
1172 | vl = new QVBoxLayout;
|
---|
1173 | vbox->setLayout(vl);
|
---|
1174 |
|
---|
1175 | mPvsErrorWidget = new QListWidget(vbox);
|
---|
1176 | vbox->layout()->addWidget(mPvsErrorWidget);
|
---|
1177 |
|
---|
1178 | connect(mPvsErrorWidget,
|
---|
1179 | SIGNAL(doubleClicked(const QModelIndex &)),
|
---|
1180 | this,
|
---|
1181 | SLOT(PvsErrorClicked(const QModelIndex &)));
|
---|
1182 |
|
---|
1183 | QPushButton *button = new QPushButton("Next Error Frame", vbox);
|
---|
1184 | vbox->layout()->addWidget(button);
|
---|
1185 | connect(button, SIGNAL(clicked(void)), SLOT(FocusNextPvsErrorFrame(void)));
|
---|
1186 |
|
---|
1187 | setWindowTitle("Preprocessor Control Widget");
|
---|
1188 | adjustSize();
|
---|
1189 | }
|
---|
1190 |
|
---|
1191 |
|
---|
1192 |
|
---|
1193 | void
|
---|
1194 | RendererControlWidget::FocusNextPvsErrorFrame(void)
|
---|
1195 | {
|
---|
1196 |
|
---|
1197 |
|
---|
1198 | }
|
---|
1199 |
|
---|
1200 | void
|
---|
1201 | RendererControlWidget::UpdatePvsErrorItem(int row,
|
---|
1202 | GlRendererBuffer::PvsErrorEntry &pvsErrorEntry)
|
---|
1203 | {
|
---|
1204 |
|
---|
1205 | QListWidgetItem *i = mPvsErrorWidget->item(row);
|
---|
1206 | QString s;
|
---|
1207 | s.sprintf("%5.5f", pvsErrorEntry.mError);
|
---|
1208 | if (i) {
|
---|
1209 | i->setText(s);
|
---|
1210 | } else {
|
---|
1211 | new QListWidgetItem(s, mPvsErrorWidget);
|
---|
1212 | }
|
---|
1213 | mPvsErrorWidget->update();
|
---|
1214 | }
|
---|
1215 |
|
---|
1216 | GlRendererWidget::GlRendererWidget(SceneGraph *sceneGraph,
|
---|
1217 | ViewCellsManager *viewcells,
|
---|
1218 | KdTree *tree,
|
---|
1219 | QWidget * parent,
|
---|
1220 | const QGLWidget * shareWidget,
|
---|
1221 | Qt::WFlags f
|
---|
1222 | )
|
---|
1223 | :
|
---|
1224 | GlRenderer(sceneGraph, viewcells, tree), QGLWidget(parent, shareWidget, f)
|
---|
1225 | {
|
---|
1226 | mTopView = false;
|
---|
1227 | mRenderViewCells = false;
|
---|
1228 | mTopDistance = 1.0f;
|
---|
1229 | mCutViewCells = false;
|
---|
1230 | mCutScene = false;
|
---|
1231 | mRenderErrors = false;
|
---|
1232 | mRenderFilter = true;
|
---|
1233 | mShowRenderCost = false;
|
---|
1234 | mShowPvsSizes = false;
|
---|
1235 |
|
---|
1236 | mPvsSize = 0;
|
---|
1237 | mRenderError = 0.0f;
|
---|
1238 | mControlWidget = new RendererControlWidget(NULL);
|
---|
1239 |
|
---|
1240 | connect(mControlWidget, SIGNAL(SetViewCellGranularity(int)), this, SLOT(SetViewCellGranularity(int)));
|
---|
1241 | connect(mControlWidget, SIGNAL(SetSceneCut(int)), this, SLOT(SetSceneCut(int)));
|
---|
1242 | connect(mControlWidget, SIGNAL(SetTopDistance(int)), this, SLOT(SetTopDistance(int)));
|
---|
1243 |
|
---|
1244 | connect(mControlWidget, SIGNAL(SetVisibilityFilterSize(int)), this, SLOT(SetVisibilityFilterSize(int)));
|
---|
1245 |
|
---|
1246 | connect(mControlWidget, SIGNAL(SetShowViewCells(bool)), this, SLOT(SetShowViewCells(bool)));
|
---|
1247 | connect(mControlWidget, SIGNAL(SetShowRenderCost(bool)), this, SLOT(SetShowRenderCost(bool)));
|
---|
1248 | connect(mControlWidget, SIGNAL(SetShowPvsSizes(bool)), this, SLOT(SetShowPvsSizes(bool)));
|
---|
1249 | connect(mControlWidget, SIGNAL(SetTopView(bool)), this, SLOT(SetTopView(bool)));
|
---|
1250 | connect(mControlWidget, SIGNAL(SetCutViewCells(bool)), this, SLOT(SetCutViewCells(bool)));
|
---|
1251 | connect(mControlWidget, SIGNAL(SetCutScene(bool)), this, SLOT(SetCutScene(bool)));
|
---|
1252 | connect(mControlWidget, SIGNAL(SetRenderErrors(bool)), this, SLOT(SetRenderErrors(bool)));
|
---|
1253 | connect(mControlWidget, SIGNAL(SetRenderFilter(bool)), this, SLOT(SetRenderFilter(bool)));
|
---|
1254 |
|
---|
1255 |
|
---|
1256 | mControlWidget->show();
|
---|
1257 | }
|
---|
1258 |
|
---|
1259 | void
|
---|
1260 | GlRendererWidget::SetViewCellGranularity(int number)
|
---|
1261 | {
|
---|
1262 | if (mViewCellsManager)
|
---|
1263 | // mViewCellsManager->SetMaxFilterSize(number);
|
---|
1264 | mViewCellsManager->CollectViewCells(number);
|
---|
1265 | updateGL();
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | void
|
---|
1269 | GlRendererWidget::SetVisibilityFilterSize(int number)
|
---|
1270 | {
|
---|
1271 | if (mViewCellsManager)
|
---|
1272 | mViewCellsManager->SetMaxFilterSize(number);
|
---|
1273 | updateGL();
|
---|
1274 | }
|
---|
1275 |
|
---|
1276 | void
|
---|
1277 | GlRendererWidget::SetSceneCut(int number)
|
---|
1278 | {
|
---|
1279 | // assume the cut plane can only be aligned with xz plane
|
---|
1280 | // shift it along y according to number, which is percentage of the bounding
|
---|
1281 | // box position
|
---|
1282 | if (mViewCellsManager) {
|
---|
1283 | AxisAlignedBox3 box = mViewCellsManager->GetViewSpaceBox();
|
---|
1284 | Vector3 p = box.Min() + (number/1000.0f)*box.Max();
|
---|
1285 | mSceneCutPlane.mNormal = Vector3(0,-1,0);
|
---|
1286 | mSceneCutPlane.mD = -DotProd(mSceneCutPlane.mNormal, p);
|
---|
1287 | updateGL();
|
---|
1288 | }
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 | void
|
---|
1292 | GlRendererWidget::SetTopDistance(int number)
|
---|
1293 | {
|
---|
1294 | mTopDistance = number/1000.0f;
|
---|
1295 | updateGL();
|
---|
1296 | }
|
---|
1297 |
|
---|
1298 | void
|
---|
1299 | GlRendererWidget::RenderViewCells()
|
---|
1300 | {
|
---|
1301 | mUseFalseColors = true;
|
---|
1302 |
|
---|
1303 | SetupCamera();
|
---|
1304 | glEnable(GL_CULL_FACE);
|
---|
1305 | //glDisable(GL_CULL_FACE);
|
---|
1306 | glCullFace(GL_FRONT);
|
---|
1307 | double eq[4];
|
---|
1308 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
1309 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
1310 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
1311 | eq[3] = mSceneCutPlane.mD;
|
---|
1312 |
|
---|
1313 | if (mCutViewCells) {
|
---|
1314 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
1315 | glEnable(GL_CLIP_PLANE0);
|
---|
1316 | }
|
---|
1317 |
|
---|
1318 | int i;
|
---|
1319 | ViewCellContainer &viewcells = mViewCellsManager->GetViewCells();
|
---|
1320 | int maxPvs = -1;
|
---|
1321 | for (i=0; i < viewcells.size(); i++) {
|
---|
1322 | ViewCell *vc = viewcells[i];
|
---|
1323 | int p = vc->GetPvs().GetSize();
|
---|
1324 | if (p > maxPvs)
|
---|
1325 | maxPvs = p;
|
---|
1326 | }
|
---|
1327 |
|
---|
1328 |
|
---|
1329 | for (i=0; i < viewcells.size(); i++) {
|
---|
1330 | ViewCell *vc = viewcells[i];
|
---|
1331 | // Mesh *m = vc->GetMesh();
|
---|
1332 |
|
---|
1333 |
|
---|
1334 | RgbColor c;
|
---|
1335 |
|
---|
1336 | if (!mShowPvsSizes)
|
---|
1337 | c = vc->GetColor();
|
---|
1338 | else {
|
---|
1339 | float importance = (float)vc->GetPvs().GetSize() / (float)maxPvs;
|
---|
1340 | c = RgbColor(importance, 1.0f - importance, 0.0f);
|
---|
1341 | }
|
---|
1342 | glColor3f(c.r, c.g, c.b);
|
---|
1343 |
|
---|
1344 | RenderViewCell(vc);
|
---|
1345 | }
|
---|
1346 |
|
---|
1347 | glDisable(GL_CLIP_PLANE0);
|
---|
1348 |
|
---|
1349 | }
|
---|
1350 |
|
---|
1351 | void GlRendererBuffer::SampleBeamContributions(Intersectable *sourceObject,
|
---|
1352 | Beam &beam,
|
---|
1353 | const int desiredSamples,
|
---|
1354 | BeamSampleStatistics &stat)
|
---|
1355 | {
|
---|
1356 | // TODO: should be moved out of here (not to be done every time)
|
---|
1357 | // only back faces are interesting for the depth pass
|
---|
1358 | glShadeModel(GL_FLAT);
|
---|
1359 | glDisable(GL_LIGHTING);
|
---|
1360 |
|
---|
1361 | // needed to kill the fragments for the front buffer
|
---|
1362 | glEnable(GL_ALPHA_TEST);
|
---|
1363 | glAlphaFunc(GL_GREATER, 0);
|
---|
1364 |
|
---|
1365 | // assumes that the beam is constructed and contains kd-tree nodes
|
---|
1366 | // and viewcells which it intersects
|
---|
1367 |
|
---|
1368 |
|
---|
1369 | // Get the number of viewpoints to be sampled
|
---|
1370 | // Now it is a sqrt but in general a wiser decision could be made.
|
---|
1371 | // The less viewpoints the better for rendering performance, since less passes
|
---|
1372 | // over the beam is needed.
|
---|
1373 | // The viewpoints could actually be generated outside of the bounding box which
|
---|
1374 | // would distribute the 'efective viewpoints' of the object surface and thus
|
---|
1375 | // with a few viewpoints better sample the viewpoint space....
|
---|
1376 |
|
---|
1377 | //TODO: comment in
|
---|
1378 | //int viewPointSamples = sqrt((float)desiredSamples);
|
---|
1379 | int viewPointSamples = max(desiredSamples / (GetWidth() * GetHeight()), 1);
|
---|
1380 |
|
---|
1381 | // the number of direction samples per pass is given by the number of viewpoints
|
---|
1382 | int directionalSamples = desiredSamples / viewPointSamples;
|
---|
1383 |
|
---|
1384 | Debug << "directional samples: " << directionalSamples << endl;
|
---|
1385 | for (int i = 0; i < viewPointSamples; ++ i)
|
---|
1386 | {
|
---|
1387 | Vector3 viewPoint = beam.mBox.GetRandomPoint();
|
---|
1388 |
|
---|
1389 | // perhaps the viewpoint should be shifted back a little bit so that it always lies
|
---|
1390 | // inside the source object
|
---|
1391 | // 'ideally' the viewpoints would be distributed on the soureObject surface, but this
|
---|
1392 | // would require more complicated sampling (perhaps hierarchical rejection sampling of
|
---|
1393 | // the object surface is an option here - only the mesh faces which are inside the box
|
---|
1394 | // are considered as candidates)
|
---|
1395 |
|
---|
1396 | SampleViewpointContributions(sourceObject,
|
---|
1397 | viewPoint,
|
---|
1398 | beam,
|
---|
1399 | directionalSamples,
|
---|
1400 | stat);
|
---|
1401 | }
|
---|
1402 |
|
---|
1403 |
|
---|
1404 | // note:
|
---|
1405 | // this routine would be called only if the number of desired samples is sufficiently
|
---|
1406 | // large - for other rss tree cells the cpu based sampling is perhaps more efficient
|
---|
1407 | // distributing the work between cpu and gpu would also allow us to place more sophisticated
|
---|
1408 | // sample distributions (silhouette ones) using the cpu and the jittered once on the GPU
|
---|
1409 | // in order that thios scheme is working well the gpu render buffer should run in a separate
|
---|
1410 | // thread than the cpu sampler, which would not be such a big problem....
|
---|
1411 |
|
---|
1412 | // disable alpha test again
|
---|
1413 | glDisable(GL_ALPHA_TEST);
|
---|
1414 | }
|
---|
1415 |
|
---|
1416 |
|
---|
1417 | void GlRendererBuffer::SampleViewpointContributions(Intersectable *sourceObject,
|
---|
1418 | const Vector3 viewPoint,
|
---|
1419 | Beam &beam,
|
---|
1420 | const int samples,
|
---|
1421 | BeamSampleStatistics &stat)
|
---|
1422 | {
|
---|
1423 | // 1. setup the view port to match the desired samples
|
---|
1424 | glViewport(0, 0, samples, samples);
|
---|
1425 |
|
---|
1426 | // 2. setup the projection matrix and view matrix to match the viewpoint + beam.mDirBox
|
---|
1427 | SetupProjectionForViewPoint(viewPoint, beam, sourceObject);
|
---|
1428 |
|
---|
1429 |
|
---|
1430 | // 3. reset z-buffer to 0 and render the source object for the beam
|
---|
1431 | // with glCullFace(Enabled) and glFrontFace(GL_CW)
|
---|
1432 | // save result to the front depth map
|
---|
1433 | // the front depth map holds ray origins
|
---|
1434 |
|
---|
1435 |
|
---|
1436 | // front depth buffer must be initialised to 0
|
---|
1437 | float clearDepth;
|
---|
1438 |
|
---|
1439 | glGetFloatv(GL_DEPTH_CLEAR_VALUE, &clearDepth);
|
---|
1440 | glClearDepth(0.0f);
|
---|
1441 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
---|
1442 |
|
---|
1443 |
|
---|
1444 | //glFrontFace(GL_CW);
|
---|
1445 | glEnable(GL_CULL_FACE);
|
---|
1446 | glCullFace(GL_FRONT);
|
---|
1447 | glColorMask(0, 0, 0, 0);
|
---|
1448 |
|
---|
1449 |
|
---|
1450 | // stencil is increased where the source object is located
|
---|
1451 | glEnable(GL_STENCIL_TEST);
|
---|
1452 | glStencilFunc(GL_ALWAYS, 0x1, 0x1);
|
---|
1453 | glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
|
---|
1454 |
|
---|
1455 |
|
---|
1456 | #if 0
|
---|
1457 | static int glSourceObjList = -1;
|
---|
1458 | if (glSourceObjList != -1)
|
---|
1459 | {
|
---|
1460 | glSourceObjList = glGenLists(1);
|
---|
1461 | glNewList(glSourceObjList, GL_COMPILE);
|
---|
1462 |
|
---|
1463 | RenderIntersectable(sourceObject);
|
---|
1464 |
|
---|
1465 | glEndList();
|
---|
1466 | }
|
---|
1467 | glCallList(glSourceObjList);
|
---|
1468 |
|
---|
1469 | #else
|
---|
1470 | RenderIntersectable(sourceObject);
|
---|
1471 |
|
---|
1472 | #endif
|
---|
1473 |
|
---|
1474 | // copy contents of the front depth buffer into depth texture
|
---|
1475 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
1476 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1477 |
|
---|
1478 |
|
---|
1479 | // reset clear function
|
---|
1480 | glClearDepth(clearDepth);
|
---|
1481 |
|
---|
1482 |
|
---|
1483 |
|
---|
1484 | // 4. set up the termination depth buffer (= standard depth buffer)
|
---|
1485 | // only rays which have non-zero entry in the origin buffer are valid since
|
---|
1486 | // they realy start on the object surface (this is tagged by setting a
|
---|
1487 | // stencil buffer bit at step 3).
|
---|
1488 |
|
---|
1489 | glStencilFunc(GL_EQUAL, 0x1, 0x1);
|
---|
1490 | glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
|
---|
1491 |
|
---|
1492 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1493 | glDepthMask(1);
|
---|
1494 |
|
---|
1495 | glEnable(GL_DEPTH_TEST);
|
---|
1496 |
|
---|
1497 | glEnable(GL_CULL_FACE);
|
---|
1498 | glCullFace(GL_BACK);
|
---|
1499 |
|
---|
1500 | // setup front depth buffer
|
---|
1501 | glEnable(GL_TEXTURE_2D);
|
---|
1502 |
|
---|
1503 | // bind pixel shader implementing the front depth buffer functionality
|
---|
1504 | cgGLBindProgram(sCgFragmentProgram);
|
---|
1505 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
1506 |
|
---|
1507 |
|
---|
1508 | // 5. render all objects inside the beam
|
---|
1509 | // we can use id based false color to read them back for gaining the pvs
|
---|
1510 |
|
---|
1511 | glColorMask(1, 1, 1, 1);
|
---|
1512 |
|
---|
1513 |
|
---|
1514 | // if objects not stored in beam => extract objects
|
---|
1515 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
1516 | {
|
---|
1517 | vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
1518 |
|
---|
1519 | Intersectable::NewMail();
|
---|
1520 | for (it = beam.mKdNodes.begin(); it != it_end; ++ it)
|
---|
1521 | {
|
---|
1522 | mKdTree->CollectObjects(*it, beam.mObjects);
|
---|
1523 | }
|
---|
1524 | }
|
---|
1525 |
|
---|
1526 |
|
---|
1527 | // (objects can be compiled to a gl list now so that subsequent rendering for
|
---|
1528 | // this beam is fast - the same hold for step 3)
|
---|
1529 | // Afterwards we have two depth buffers defining the ray origin and termination
|
---|
1530 |
|
---|
1531 |
|
---|
1532 | #if 0
|
---|
1533 | static int glObjList = -1;
|
---|
1534 | if (glObjList != -1)
|
---|
1535 | {
|
---|
1536 | glObjList = glGenLists(1);
|
---|
1537 | glNewList(glObjList, GL_COMPILE);
|
---|
1538 |
|
---|
1539 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1540 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1541 | {
|
---|
1542 | // render all objects except the source object
|
---|
1543 | if (*it != sourceObject)
|
---|
1544 | RenderIntersectable(*it);
|
---|
1545 | }
|
---|
1546 |
|
---|
1547 | glEndList();
|
---|
1548 | }
|
---|
1549 |
|
---|
1550 | glCallList(glObjList);
|
---|
1551 | #else
|
---|
1552 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1553 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1554 | {
|
---|
1555 | // render all objects except the source object
|
---|
1556 | if (*it != sourceObject)
|
---|
1557 | RenderIntersectable(*it);
|
---|
1558 | }
|
---|
1559 | #endif
|
---|
1560 |
|
---|
1561 |
|
---|
1562 |
|
---|
1563 | // 6. Use occlusion queries for all viewcell meshes associated with the beam ->
|
---|
1564 | // a fragment passes if the corresponding stencil fragment is set and its depth is
|
---|
1565 | // between origin and termination buffer
|
---|
1566 |
|
---|
1567 | // create new queries if necessary
|
---|
1568 | GenQueries((int)beam.mViewCells.size());
|
---|
1569 |
|
---|
1570 | // check whether any backfacing polygon would pass the depth test?
|
---|
1571 | // matt: should check both back /front facing because of dual depth buffer
|
---|
1572 | // and danger of cutting the near plane with front facing polys.
|
---|
1573 |
|
---|
1574 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
1575 | glDepthMask(GL_FALSE);
|
---|
1576 | glDisable(GL_CULL_FACE);
|
---|
1577 |
|
---|
1578 |
|
---|
1579 | ViewCellContainer::const_iterator vit, vit_end = beam.mViewCells.end();
|
---|
1580 |
|
---|
1581 | int queryIdx = 0;
|
---|
1582 |
|
---|
1583 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1584 | {
|
---|
1585 | glBeginOcclusionQueryNV(sQueries[queryIdx ++]);
|
---|
1586 |
|
---|
1587 | RenderIntersectable(*vit);
|
---|
1588 |
|
---|
1589 | glEndOcclusionQueryNV();
|
---|
1590 | }
|
---|
1591 |
|
---|
1592 |
|
---|
1593 |
|
---|
1594 | // at this point, if possible, go and do some other computation
|
---|
1595 |
|
---|
1596 |
|
---|
1597 |
|
---|
1598 | // 7. The number of visible pixels is the number of sample rays which see the source
|
---|
1599 | // object from the corresponding viewcell -> remember these values for later update
|
---|
1600 | // of the viewcell pvs - or update immediately?
|
---|
1601 |
|
---|
1602 | queryIdx = 0;
|
---|
1603 | unsigned int pixelCount;
|
---|
1604 |
|
---|
1605 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1606 | {
|
---|
1607 | // fetch queries
|
---|
1608 | glGetOcclusionQueryuivNV(sQueries[queryIdx ++],
|
---|
1609 | GL_PIXEL_COUNT_NV,
|
---|
1610 | &pixelCount);
|
---|
1611 | if (pixelCount)
|
---|
1612 | Debug << "view cell " << (*vit)->GetId() << " visible pixels: " << pixelCount << endl;
|
---|
1613 | }
|
---|
1614 |
|
---|
1615 |
|
---|
1616 | // 8. Copmpute rendering statistics
|
---|
1617 | // In general it is not neccessary to remember to extract all the rays cast. I hope it
|
---|
1618 | // would be sufficient to gain only the intergral statistics about the new contributions
|
---|
1619 | // and so the rss tree would actually store no new rays (only the initial ones)
|
---|
1620 | // the subdivision of the tree would only be driven by the statistics (the glrender could
|
---|
1621 | // evaluate the contribution entropy for example)
|
---|
1622 | // However might be an option to extract/store only those the rays which made a contribution
|
---|
1623 | // (new viewcell has been discovered) or relative contribution greater than a threshold ...
|
---|
1624 |
|
---|
1625 | ObjectContainer pvsObj;
|
---|
1626 | stat.pvsSize = ComputePvs(beam.mObjects, pvsObj);
|
---|
1627 |
|
---|
1628 | // to gain ray source and termination
|
---|
1629 | // copy contents of ray termination buffer into depth texture
|
---|
1630 | // and compare with ray source buffer
|
---|
1631 | #if 0
|
---|
1632 | VssRayContainer rays;
|
---|
1633 |
|
---|
1634 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
1635 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1636 |
|
---|
1637 | ComputeRays(Intersectable *sourceObj, rays);
|
---|
1638 |
|
---|
1639 | #endif
|
---|
1640 |
|
---|
1641 |
|
---|
1642 |
|
---|
1643 | //-- cleanup
|
---|
1644 |
|
---|
1645 |
|
---|
1646 | // reset gl state
|
---|
1647 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
1648 | glDepthMask(GL_TRUE);
|
---|
1649 | glEnable(GL_CULL_FACE);
|
---|
1650 | glDisable(GL_STENCIL_TEST);
|
---|
1651 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
1652 | glDisable(GL_TEXTURE_2D);
|
---|
1653 |
|
---|
1654 | // remove objects from beam
|
---|
1655 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
1656 | beam.mObjects.clear();
|
---|
1657 | }
|
---|
1658 |
|
---|
1659 |
|
---|
1660 | void GlRendererBuffer::GenQueries(const int numQueries)
|
---|
1661 | {
|
---|
1662 | if ((int)sQueries.size() < numQueries)
|
---|
1663 | {
|
---|
1664 | const int n = numQueries - (int)sQueries.size();
|
---|
1665 | unsigned int *newQueries = new unsigned int[n];
|
---|
1666 |
|
---|
1667 | glGenOcclusionQueriesNV(n, (unsigned int *)newQueries);
|
---|
1668 |
|
---|
1669 | for (int i = 0; i < n; ++ i)
|
---|
1670 | {
|
---|
1671 | sQueries.push_back(newQueries[i]);
|
---|
1672 | }
|
---|
1673 |
|
---|
1674 | delete [] newQueries;
|
---|
1675 | }
|
---|
1676 | }
|
---|
1677 |
|
---|
1678 |
|
---|
1679 | void GlRendererBuffer::SetupProjectionForViewPoint(const Vector3 &viewPoint,
|
---|
1680 | const Beam &beam,
|
---|
1681 | Intersectable *sourceObject)
|
---|
1682 | {
|
---|
1683 | float left, right, bottom, top, znear, zfar;
|
---|
1684 |
|
---|
1685 | beam.ComputePerspectiveFrustum(left, right, bottom, top, znear, zfar,
|
---|
1686 | mSceneGraph->GetBox());
|
---|
1687 |
|
---|
1688 | //Debug << left << " " << right << " " << bottom << " " << top << " " << znear << " " << zfar << endl;
|
---|
1689 | glMatrixMode(GL_PROJECTION);
|
---|
1690 | glLoadIdentity();
|
---|
1691 | glFrustum(left, right, bottom, top, znear, zfar);
|
---|
1692 | //glFrustum(-1, 1, -1, 1, 1, 20000);
|
---|
1693 |
|
---|
1694 | const Vector3 center = viewPoint + beam.GetMainDirection() * (zfar - znear) * 0.3f;
|
---|
1695 | const Vector3 up =
|
---|
1696 | Normalize(CrossProd(beam.mPlanes[0].mNormal, beam.mPlanes[4].mNormal));
|
---|
1697 |
|
---|
1698 | #ifdef _DEBUG
|
---|
1699 | Debug << "view point: " << viewPoint << endl;
|
---|
1700 | Debug << "eye: " << center << endl;
|
---|
1701 | Debug << "up: " << up << endl;
|
---|
1702 | #endif
|
---|
1703 |
|
---|
1704 | glMatrixMode(GL_MODELVIEW);
|
---|
1705 | glLoadIdentity();
|
---|
1706 | gluLookAt(viewPoint.x, viewPoint.y, viewPoint.z,
|
---|
1707 | center.x, center.y, center.z,
|
---|
1708 | up.x, up.y, up.z);
|
---|
1709 | }
|
---|
1710 |
|
---|
1711 |
|
---|
1712 | void GlRendererBuffer::InitGL()
|
---|
1713 | {
|
---|
1714 | makeCurrent();
|
---|
1715 | GlRenderer::InitGL();
|
---|
1716 | #if 1
|
---|
1717 | // initialise dual depth buffer textures
|
---|
1718 | glGenTextures(1, &frontDepthMap);
|
---|
1719 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
1720 |
|
---|
1721 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
1722 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
1723 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
1724 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
1725 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
1726 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
1727 |
|
---|
1728 | glGenTextures(1, &backDepthMap);
|
---|
1729 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
1730 |
|
---|
1731 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
1732 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
1733 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
1734 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
1735 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
1736 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
1737 |
|
---|
1738 | // cg initialization
|
---|
1739 | cgSetErrorCallback(handleCgError);
|
---|
1740 | sCgContext = cgCreateContext();
|
---|
1741 |
|
---|
1742 | if (cgGLIsProfileSupported(CG_PROFILE_ARBFP1))
|
---|
1743 | sCgFragmentProfile = CG_PROFILE_ARBFP1;
|
---|
1744 | else
|
---|
1745 | {
|
---|
1746 | // try FP30
|
---|
1747 | if (cgGLIsProfileSupported(CG_PROFILE_FP30))
|
---|
1748 | sCgFragmentProfile = CG_PROFILE_FP30;
|
---|
1749 | else
|
---|
1750 | {
|
---|
1751 | Debug << "Neither arbfp1 or fp30 fragment profiles supported on this system" << endl;
|
---|
1752 | exit(1);
|
---|
1753 | }
|
---|
1754 | }
|
---|
1755 |
|
---|
1756 |
|
---|
1757 | sCgFragmentProgram = cgCreateProgramFromFile(sCgContext,
|
---|
1758 | CG_SOURCE, "../src/dual_depth.cg",
|
---|
1759 | sCgFragmentProfile,
|
---|
1760 | NULL,
|
---|
1761 | NULL);
|
---|
1762 |
|
---|
1763 | if (!cgIsProgramCompiled(sCgFragmentProgram))
|
---|
1764 | cgCompileProgram(sCgFragmentProgram);
|
---|
1765 |
|
---|
1766 | cgGLLoadProgram(sCgFragmentProgram);
|
---|
1767 | cgGLBindProgram(sCgFragmentProgram);
|
---|
1768 |
|
---|
1769 | Debug << "---- PROGRAM BEGIN ----\n" <<
|
---|
1770 | cgGetProgramString(sCgFragmentProgram, CG_COMPILED_PROGRAM) << "---- PROGRAM END ----\n";
|
---|
1771 |
|
---|
1772 | #endif
|
---|
1773 | doneCurrent();
|
---|
1774 | }
|
---|
1775 |
|
---|
1776 |
|
---|
1777 | void GlRendererBuffer::ComputeRays(Intersectable *sourceObj, VssRayContainer &rays)
|
---|
1778 | {
|
---|
1779 | for (int i = 0; i < depthMapSize * depthMapSize; ++ i)
|
---|
1780 | {
|
---|
1781 | //todo glGetTexImage()
|
---|
1782 | }
|
---|
1783 | }
|
---|
1784 |
|
---|
1785 |
|
---|
1786 |
|
---|
1787 | inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
1788 | {
|
---|
1789 | return obj1->mId < obj2->mId;
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 |
|
---|
1793 | int GlRendererBuffer::ComputePvs(ObjectContainer &objects,
|
---|
1794 | ObjectContainer &pvs) const
|
---|
1795 | {
|
---|
1796 | int pvsSize = 0;
|
---|
1797 | QImage image = toImage();
|
---|
1798 | Intersectable::NewMail();
|
---|
1799 |
|
---|
1800 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
1801 |
|
---|
1802 | MeshInstance dummy(NULL);
|
---|
1803 |
|
---|
1804 | Intersectable *obj = NULL;
|
---|
1805 |
|
---|
1806 | for (int x = 0; x < image.width(); ++ x)
|
---|
1807 | {
|
---|
1808 | for (int y = 0; y < image.height(); ++ y)
|
---|
1809 | {
|
---|
1810 | QRgb pix = image.pixel(x, y);
|
---|
1811 | const int id = GetId(qRed(pix), qGreen(pix), qBlue(pix));
|
---|
1812 |
|
---|
1813 | dummy.SetId(id);
|
---|
1814 |
|
---|
1815 | ObjectContainer::iterator oit =
|
---|
1816 | lower_bound(objects.begin(), objects.end(), &dummy, ilt);
|
---|
1817 |
|
---|
1818 |
|
---|
1819 | if (//(oit != oit.end()) &&
|
---|
1820 | ((*oit)->GetId() == id) &&
|
---|
1821 | !obj->Mailed())
|
---|
1822 | {
|
---|
1823 | obj = *oit;
|
---|
1824 | obj->Mail();
|
---|
1825 | ++ pvsSize;
|
---|
1826 | pvs.push_back(obj);
|
---|
1827 | }
|
---|
1828 | }
|
---|
1829 | }
|
---|
1830 |
|
---|
1831 | return pvsSize;
|
---|
1832 | }
|
---|
1833 |
|
---|
1834 | /***********************************************************************/
|
---|
1835 | /* GlDebuggerWidget implementation */
|
---|
1836 | /***********************************************************************/
|
---|
1837 |
|
---|
1838 |
|
---|
1839 | GlDebuggerWidget::GlDebuggerWidget(GlRendererBuffer *buf, QWidget *parent)
|
---|
1840 | : QGLWidget(QGLFormat(QGL::SampleBuffers), parent), mRenderBuffer(buf)
|
---|
1841 | {
|
---|
1842 | // create the pbuffer
|
---|
1843 | //pbuffer = new QGLPixelBuffer(QSize(512, 512), format(), this);
|
---|
1844 | timerId = startTimer(20);
|
---|
1845 | setWindowTitle(("OpenGL pbuffers"));
|
---|
1846 | }
|
---|
1847 |
|
---|
1848 |
|
---|
1849 | GlDebuggerWidget::~GlDebuggerWidget()
|
---|
1850 | {
|
---|
1851 | mRenderBuffer->releaseFromDynamicTexture();
|
---|
1852 | glDeleteTextures(1, &dynamicTexture);
|
---|
1853 |
|
---|
1854 | DEL_PTR(mRenderBuffer);
|
---|
1855 | }
|
---|
1856 |
|
---|
1857 |
|
---|
1858 | void GlDebuggerWidget::initializeGL()
|
---|
1859 | {
|
---|
1860 | glMatrixMode(GL_PROJECTION);
|
---|
1861 | glLoadIdentity();
|
---|
1862 |
|
---|
1863 | glFrustum(-1, 1, -1, 1, 10, 100);
|
---|
1864 | glTranslatef(-0.5f, -0.5f, -0.5f);
|
---|
1865 | glTranslatef(0.0f, 0.0f, -15.0f);
|
---|
1866 | glMatrixMode(GL_MODELVIEW);
|
---|
1867 |
|
---|
1868 | glEnable(GL_CULL_FACE);
|
---|
1869 | initCommon();
|
---|
1870 | initPbuffer();
|
---|
1871 |
|
---|
1872 | }
|
---|
1873 |
|
---|
1874 |
|
---|
1875 | void GlDebuggerWidget::resizeGL(int w, int h)
|
---|
1876 | {
|
---|
1877 | glViewport(0, 0, w, h);
|
---|
1878 | }
|
---|
1879 |
|
---|
1880 |
|
---|
1881 | void GlDebuggerWidget::paintGL()
|
---|
1882 | {
|
---|
1883 | // draw a spinning cube into the pbuffer..
|
---|
1884 | mRenderBuffer->makeCurrent();
|
---|
1885 |
|
---|
1886 | BeamSampleStatistics stats;
|
---|
1887 | mRenderBuffer->SampleBeamContributions(mSourceObject, mBeam, mSamples, stats);
|
---|
1888 |
|
---|
1889 | glFlush();
|
---|
1890 |
|
---|
1891 | // rendering directly to a texture is not supported on X11, unfortunately
|
---|
1892 | mRenderBuffer->updateDynamicTexture(dynamicTexture);
|
---|
1893 |
|
---|
1894 | // and use the pbuffer contents as a texture when rendering the
|
---|
1895 | // background and the bouncing cubes
|
---|
1896 | makeCurrent();
|
---|
1897 | glBindTexture(GL_TEXTURE_2D, dynamicTexture);
|
---|
1898 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1899 |
|
---|
1900 | // draw the background
|
---|
1901 | glMatrixMode(GL_MODELVIEW);
|
---|
1902 | glPushMatrix();
|
---|
1903 | glLoadIdentity();
|
---|
1904 | glMatrixMode(GL_PROJECTION);
|
---|
1905 | glPushMatrix();
|
---|
1906 | glLoadIdentity();
|
---|
1907 |
|
---|
1908 | glPopMatrix();
|
---|
1909 | glMatrixMode(GL_MODELVIEW);
|
---|
1910 | glPopMatrix();
|
---|
1911 | }
|
---|
1912 |
|
---|
1913 |
|
---|
1914 | void GlDebuggerWidget::initPbuffer()
|
---|
1915 | {
|
---|
1916 | // set up the pbuffer context
|
---|
1917 | mRenderBuffer->makeCurrent();
|
---|
1918 | /*mRenderBuffer->InitGL();
|
---|
1919 |
|
---|
1920 | glViewport(0, 0, mRenderBuffer->size().width(), mRenderBuffer->size().height());
|
---|
1921 | glMatrixMode(GL_PROJECTION);
|
---|
1922 | glLoadIdentity();
|
---|
1923 | glOrtho(-1, 1, -1, 1, -99, 99);
|
---|
1924 | glTranslatef(-0.5f, -0.5f, 0.0f);
|
---|
1925 | glMatrixMode(GL_MODELVIEW);
|
---|
1926 | glLoadIdentity();
|
---|
1927 |
|
---|
1928 | glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);*/
|
---|
1929 |
|
---|
1930 | // generate a texture that has the same size/format as the pbuffer
|
---|
1931 | dynamicTexture = mRenderBuffer->generateDynamicTexture();
|
---|
1932 |
|
---|
1933 | // bind the dynamic texture to the pbuffer - this is a no-op under X11
|
---|
1934 | mRenderBuffer->bindToDynamicTexture(dynamicTexture);
|
---|
1935 | makeCurrent();
|
---|
1936 | }
|
---|
1937 |
|
---|
1938 | void GlDebuggerWidget::initCommon()
|
---|
1939 | {
|
---|
1940 | glEnable(GL_TEXTURE_2D);
|
---|
1941 | glEnable(GL_DEPTH_TEST);
|
---|
1942 |
|
---|
1943 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
1944 | }
|
---|