1 | #include "Mesh.h"
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2 | #include "glInterface.h"
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3 | #include "OcclusionQuery.h"
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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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10 | #include "KdTree.h"
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11 | #include "Environment.h"
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12 |
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13 |
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14 | //#define GL_GLEXT_PROTOTYPES
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15 |
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16 |
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17 | #include <Cg/cg.h>
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18 | #include <Cg/cgGL.h>
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19 |
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20 |
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21 | #include <QVBoxLayout>
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22 |
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23 | namespace GtpVisibilityPreprocessor {
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24 |
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25 | static CGcontext sCgContext = NULL;
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26 | static CGprogram sCgFragmentProgram = NULL;
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27 | static CGprofile sCgFragmentProfile;
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28 |
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29 | GLuint frontDepthMap;
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30 | GLuint backDepthMap;
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31 |
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32 | const int depthMapSize = 512;
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33 | static vector<OcclusionQuery *> sQueries;
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34 |
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35 | GlRendererWidget *rendererWidget = NULL;
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36 | GlDebuggerWidget *debuggerWidget = NULL;
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37 |
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38 | static bool arbQuerySupport = false; |
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39 | static bool nvQuerySupport = false; |
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40 | |
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41 | |
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42 | static void InitExtensions() |
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43 | { |
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44 | GLenum err = glewInit(); |
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45 | |
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46 | if (GLEW_OK != err) |
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47 | { |
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48 | // problem: glewInit failed, something is seriously wrong |
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49 | cerr << "Error: " << glewGetErrorString(err) << endl; |
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50 | exit(1); |
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51 | } |
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52 | |
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53 | if (GLEW_ARB_occlusion_query) |
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54 | arbQuerySupport = true; |
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55 | |
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56 | if (GLEW_NV_occlusion_query) |
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57 | nvQuerySupport = true; |
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58 | |
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59 | |
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60 | if (!arbQuerySupport && !nvQuerySupport) |
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61 | { |
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62 | cout << "I require the GL_ARB_occlusion_query or the GL_NV_occlusion_query OpenGL extension to work.\n"; |
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63 | exit(1); |
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64 | } |
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65 | }
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66 |
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67 |
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68 | GlRenderer::GlRenderer(SceneGraph *sceneGraph,
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69 | ViewCellsManager *viewCellsManager,
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70 | KdTree *tree):
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71 | Renderer(sceneGraph, viewCellsManager),
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72 | mKdTree(tree)
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73 | {
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74 | mSceneGraph->CollectObjects(&mObjects);
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75 | mViewPoint = mSceneGraph->GetBox().Center();
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76 | mViewDirection = Vector3(0,0,1);
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77 |
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78 | mViewPoint = Vector3(991.7, 187.8, -271);
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79 | mViewDirection = Vector3(0.9, 0, -0.4);
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80 |
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81 | // timerId = startTimer(10);
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82 | // debug coords for atlanta
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83 | // mViewPoint = Vector3(3473, 6.778, -1699);
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84 | // mViewDirection = Vector3(-0.2432, 0, 0.97);
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85 |
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86 | mFrame = 0;
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87 | mWireFrame = false;
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88 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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89 | mSnapErrorFrames = true;
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90 | mSnapPrefix = "snap/";
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91 | mUseForcedColors = false;
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92 |
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93 | mUseGlLists = true;
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94 | //mUseGlLists = false;
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95 | }
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96 |
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97 | GlRenderer::~GlRenderer()
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98 | {
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99 | cerr<<"gl renderer destructor..\n";
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100 | if (sCgFragmentProgram)
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101 | cgDestroyProgram(sCgFragmentProgram);
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102 | if (sCgContext)
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103 | cgDestroyContext(sCgContext);
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104 | cerr<<"done."<<endl;
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105 |
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106 | CLEAR_CONTAINER(sQueries);
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107 | CLEAR_CONTAINER(mOcclusionQueries);
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108 | }
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109 |
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110 |
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111 | static void handleCgError()
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112 | {
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113 | Debug << "Cg error: " << cgGetErrorString(cgGetError()) << endl;
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114 | exit(1);
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115 | }
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116 |
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117 | void
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118 | GlRenderer::RenderIntersectable(Intersectable *object)
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119 | {
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120 |
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121 | glPushAttrib(GL_CURRENT_BIT);
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122 | if (mUseFalseColors)
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123 | SetupFalseColor(object->mId);
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124 |
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125 |
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126 | switch (object->Type()) {
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127 | case Intersectable::MESH_INSTANCE:
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128 | RenderMeshInstance((MeshInstance *)object);
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129 | break;
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130 | case Intersectable::VIEW_CELL:
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131 | RenderViewCell(dynamic_cast<ViewCell *>(object));
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132 | break;
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133 | case Intersectable::TRANSFORMED_MESH_INSTANCE:
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134 | RenderTransformedMeshInstance(dynamic_cast<TransformedMeshInstance *>(object));
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135 | break;
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136 | default:
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137 | cerr<<"Rendering this object not yet implemented\n";
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138 | break;
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139 | }
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140 |
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141 | glPopAttrib();
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142 | }
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143 |
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144 |
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145 | void
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146 | GlRenderer::RenderViewCell(ViewCell *vc)
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147 | {
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148 | if (vc->GetMesh()) {
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149 |
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150 | if (!mUseFalseColors) {
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151 | if (vc->GetValid())
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152 | glColor3f(0,1,0);
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153 | else
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154 | glColor3f(0,0,1);
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155 | }
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156 |
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157 | RenderMesh(vc->GetMesh());
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158 | } else {
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159 | // render viewcells in the subtree
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160 | if (!vc->IsLeaf()) {
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161 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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162 |
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163 | ViewCellContainer::iterator it = vci->mChildren.begin();
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164 | for (; it != vci->mChildren.end(); ++it) {
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165 | RenderViewCell(*it);
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166 | }
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167 | } else {
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168 | // cerr<<"Empty viewcell mesh\n";
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169 | }
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170 | }
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171 | }
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172 |
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173 |
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174 | void
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175 | GlRenderer::RenderMeshInstance(MeshInstance *mi)
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176 | {
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177 | RenderMesh(mi->GetMesh());
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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::RenderTransformedMeshInstance(TransformedMeshInstance *mi)
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183 | {
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184 | // apply world transform before rendering
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185 | Matrix4x4 m;
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186 | mi->GetWorldTransform(m);
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187 |
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188 | glPushMatrix();
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189 | /* cout << "\n";
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190 | for (int i = 0; i < 4; ++ i)
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191 | for (int j = 0; j < 4; ++ j)
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192 | cout << m.x[i][j] << " "; cout << "\n"*/
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193 |
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194 | glMultMatrixf((float *)m.x);
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195 |
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196 | /*GLfloat dummy[16];
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197 | glGetFloatv(GL_MODELVIEW_MATRIX, dummy);
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198 | for (int i = 0; i < 16; ++ i)
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199 | cout << dummy[i] << " ";
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200 | cout << endl;*/
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201 | RenderMesh(mi->GetMesh());
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202 |
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203 | glPopMatrix();
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204 | }
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205 |
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206 |
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207 | void
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208 | GlRenderer::SetupFalseColor(const int id)
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209 | {
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210 | // swap bits of the color
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211 | glColor3ub(id&255, (id>>8)&255, (id>>16)&255);
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212 | }
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213 |
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214 |
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215 | int GlRenderer::GetId(int r, int g, int b) const
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216 | {
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217 | return r + (g << 8) + (b << 16);
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218 | }
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219 |
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220 | void
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221 | GlRenderer::SetupMaterial(Material *m)
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222 | {
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223 | if (m)
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224 | glColor3fv(&(m->mDiffuseColor.r));
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225 | }
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226 |
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227 | void
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228 | GlRenderer::RenderMesh(Mesh *mesh)
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229 | {
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230 | int i = 0;
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231 |
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232 | if (!mUseFalseColors && !mUseForcedColors)
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233 | SetupMaterial(mesh->mMaterial);
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234 |
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235 | for (i=0; i < mesh->mFaces.size(); i++) {
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236 | if (mWireFrame)
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237 | glBegin(GL_LINE_LOOP);
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238 | else
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239 | glBegin(GL_POLYGON);
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240 |
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241 | Face *face = mesh->mFaces[i];
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242 | for (int j = 0; j < face->mVertexIndices.size(); j++) {
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243 | glVertex3fv(&mesh->mVertices[face->mVertexIndices[j]].x);
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244 | }
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245 | glEnd();
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246 | }
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247 | }
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248 |
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249 | void
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250 | GlRenderer::InitGL()
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251 | {
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252 | glMatrixMode(GL_PROJECTION);
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253 | glLoadIdentity();
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254 |
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255 | glMatrixMode(GL_MODELVIEW);
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256 | glLoadIdentity();
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257 |
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258 | glEnable(GL_CULL_FACE);
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259 | glShadeModel(GL_FLAT);
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260 | glEnable(GL_DEPTH_TEST);
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261 | glEnable(GL_CULL_FACE);
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262 |
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263 | // HACK!! but using glew keeps crashing for some reason ...
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264 | InitExtensions();
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265 |
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266 | #if 0
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267 | GLfloat mat_ambient[] = { 0.5, 0.5, 0.5, 1.0 };
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268 | /* mat_specular and mat_shininess are NOT default values */
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269 | GLfloat mat_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
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270 | GLfloat mat_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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271 | GLfloat mat_shininess[] = { 1.0 };
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272 |
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273 | GLfloat light_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
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274 | GLfloat light_diffuse[] = { 0.4, 0.4, 0.4, 1.0 };
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275 | GLfloat light_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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276 |
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277 | GLfloat lmodel_ambient[] = { 0.3, 0.3, 0.3, 1.0 };
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278 |
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279 |
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280 | // default Material
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281 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
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282 | glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
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283 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
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284 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
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285 |
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286 | // a light
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287 | glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
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288 | glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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289 | glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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290 |
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291 | glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
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292 | glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
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293 | glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);
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294 |
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295 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
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296 |
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297 | glEnable(GL_LIGHTING);
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298 | glEnable(GL_LIGHT0);
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299 | glEnable(GL_LIGHT1);
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300 |
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301 |
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302 | // set position of the light
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303 | GLfloat infinite_light[] = { 1.0, 0.8, 1.0, 0.0 };
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304 | glLightfv (GL_LIGHT0, GL_POSITION, infinite_light);
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305 |
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306 | // set position of the light2
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307 | GLfloat infinite_light2[] = { -0.3, 1.5, 1.0, 0.0 };
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308 | glLightfv (GL_LIGHT1, GL_POSITION, infinite_light2);
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309 |
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310 | glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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311 | // glColorMaterial( GL_FRONT_AND_BACK, GL_SPECULAR);
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312 | glEnable(GL_COLOR_MATERIAL);
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313 |
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314 | glShadeModel( GL_FLAT );
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315 |
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316 | glDepthFunc( GL_LESS );
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317 | glEnable( GL_DEPTH_TEST );
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318 | #endif
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319 |
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320 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
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321 |
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322 | glEnable( GL_NORMALIZE );
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323 |
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324 | glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
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325 | }
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326 |
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327 | void
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328 | GlRendererWidget::RenderInfo()
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329 | {
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330 | QString s;
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331 | int vc = 0;
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332 | if (mViewCellsManager)
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333 | vc = mViewCellsManager->GetViewCells().size();
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334 | int filter = 0;
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335 | if (mViewCellsManager)
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336 | filter = mViewCellsManager->GetMaxFilterSize();
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337 |
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338 | 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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339 | mFrame,
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340 | mViewPoint.x,
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341 | mViewPoint.y,
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342 | mViewPoint.z,
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343 | mViewDirection.x,
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344 | mViewDirection.y,
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345 | mViewDirection.z,
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346 | vc,
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347 |
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348 | filter,
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349 | mPvsSize,
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350 | mRenderError*100.0f
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351 | );
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352 |
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353 | glColor3f(0.0f,0.0f,0.0f);
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354 | renderText(0,20,s);
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355 |
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356 | if (mShowRenderCost) {
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357 | static vector<float> costFunction;
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358 | static float maxCost = -1;
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359 | if (costFunction.size()==0) {
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360 | ViewCellsTree *tree = mViewCellsManager->GetViewCellsTree();
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361 | if (tree) {
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362 | tree->GetCostFunction(costFunction);
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363 | maxCost = -1;
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364 | for (int i=0; i < costFunction.size(); i++) {
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365 | // cout<<i<<":"<<costFunction[i]<<" ";
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366 | if (costFunction[i] > maxCost)
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367 | maxCost = costFunction[i];
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368 | }
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369 | }
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370 | }
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371 |
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372 |
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373 | int currentPos = mViewCellsManager->GetViewCells().size();
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374 | float currentCost=-1;
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375 |
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376 | if (currentPos < costFunction.size())
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377 | currentCost = costFunction[currentPos];
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378 | #if 0
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379 | cout<<"costFunction.size()="<<costFunction.size()<<endl;
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380 | cout<<"CP="<<currentPos<<endl;
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381 | cout<<"MC="<<maxCost<<endl;
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382 | cout<<"CC="<<currentCost<<endl;
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383 | #endif
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384 | if (costFunction.size()) {
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385 | glDisable(GL_DEPTH_TEST);
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386 | // init ortographic projection
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387 | glMatrixMode(GL_PROJECTION);
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388 | glPushMatrix();
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389 |
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390 | glLoadIdentity();
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391 | gluOrtho2D(0, 1.0f, 0, 1.0f);
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392 |
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393 | glTranslatef(0.1f, 0.1f, 0.0f);
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394 | glScalef(0.8f, 0.8f, 1.0f);
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395 | glMatrixMode(GL_MODELVIEW);
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396 | glLoadIdentity();
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397 |
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398 | glColor3f(1.0f,0,0);
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399 | glBegin(GL_LINE_STRIP);
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400 | // glVertex3f(0,0,0);
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401 |
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402 | for (int i=0; i < costFunction.size(); i++) {
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403 | float x = i/(float)costFunction.size();
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404 | float y = costFunction[i]/(maxCost*0.5f);
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405 | glVertex3f(x,y,0.0f);
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406 | }
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407 | glEnd();
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408 |
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409 | glColor3f(1.0f,0,0);
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410 | glBegin(GL_LINES);
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411 | float x = currentPos/(float)costFunction.size();
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412 | glVertex3f(x,0.0,0.0f);
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413 | glVertex3f(x,1.0f,0.0f);
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414 | glEnd();
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415 |
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416 | glColor3f(0.0f,0,0);
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417 | // show a grid
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418 | glBegin(GL_LINE_LOOP);
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419 | glVertex3f(0,0,0.0f);
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420 | glVertex3f(1,0,0.0f);
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421 | glVertex3f(1,1,0.0f);
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422 | glVertex3f(0,1,0.0f);
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423 | glEnd();
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424 |
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425 | glBegin(GL_LINES);
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426 | for (int i=0; i < 50000 && i < costFunction.size(); i+=10000) {
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427 | float x = i/(float)costFunction.size();
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428 | glVertex3f(x,0.0,0.0f);
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429 | glVertex3f(x,1.0f,0.0f);
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430 | }
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431 |
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432 | for (int i=0; i < maxCost; i+=100) {
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433 | float y = i/(maxCost*0.5f);
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434 | glVertex3f(0,y,0.0f);
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435 | glVertex3f(1,y,0.0f);
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436 | }
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437 |
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438 | glEnd();
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439 |
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440 |
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441 | // restore the projection matrix
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442 | glMatrixMode(GL_PROJECTION);
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443 | glPopMatrix();
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444 | glMatrixMode(GL_MODELVIEW);
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445 | glEnable(GL_DEPTH_TEST);
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446 |
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447 | }
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448 | }
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449 | }
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450 |
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451 |
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452 | void
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453 | GlRenderer::SetupProjection(const int w, const int h, const float angle)
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454 | {
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455 | glViewport(0, 0, w, h);
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456 | glMatrixMode(GL_PROJECTION);
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457 | glLoadIdentity();
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458 | gluPerspective(angle, 1.0, 0.1, 2.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
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459 | glMatrixMode(GL_MODELVIEW);
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460 | }
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461 |
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462 | void
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463 | GlRenderer::SetupCamera()
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464 | {
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465 | Vector3 target = mViewPoint + mViewDirection;
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466 |
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467 | Vector3 up(0,1,0);
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468 |
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469 | if (abs(DotProd(mViewDirection, up)) > 0.99f)
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470 | up = Vector3(1, 0, 0);
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471 |
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472 | glLoadIdentity();
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---|
473 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
|
---|
474 | target.x, target.y, target.z,
|
---|
475 | up.x, up.y, up.z);
|
---|
476 | }
|
---|
477 |
|
---|
478 |
|
---|
479 | void
|
---|
480 | GlRendererBuffer::EvalQueryWithItemBuffer(
|
---|
481 | //RenderCostSample &sample
|
---|
482 | )
|
---|
483 | {
|
---|
484 | // read back the texture
|
---|
485 | glReadPixels(0, 0,
|
---|
486 | GetWidth(), GetHeight(),
|
---|
487 | GL_RGBA,
|
---|
488 | GL_UNSIGNED_BYTE,
|
---|
489 | mPixelBuffer);
|
---|
490 |
|
---|
491 |
|
---|
492 | unsigned int *p = mPixelBuffer;
|
---|
493 |
|
---|
494 | for (int y = 0; y < GetHeight(); y++)
|
---|
495 | {
|
---|
496 | for (int x = 0; x < GetWidth(); x++, p++)
|
---|
497 | {
|
---|
498 | unsigned int id = (*p) & 0xFFFFFF;
|
---|
499 |
|
---|
500 | if (id != 0xFFFFFF)
|
---|
501 | ++ mObjects[id]->mCounter;
|
---|
502 | }
|
---|
503 | }
|
---|
504 | }
|
---|
505 |
|
---|
506 | //std::ofstream outfile("try_arb.txt");
|
---|
507 | void
|
---|
508 | GlRendererBuffer::EvalQueryWithOcclusionQueries(
|
---|
509 | //RenderCostSample &sample
|
---|
510 | )
|
---|
511 | {
|
---|
512 | glDepthFunc(GL_LEQUAL);
|
---|
513 |
|
---|
514 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
515 | glDepthMask(GL_FALSE);
|
---|
516 |
|
---|
517 |
|
---|
518 | // simulate detectemptyviewspace using backface culling
|
---|
519 | if (mDetectEmptyViewSpace)
|
---|
520 | {
|
---|
521 | glEnable(GL_CULL_FACE);
|
---|
522 | //cout << "culling" << endl;
|
---|
523 | }
|
---|
524 | else
|
---|
525 | {
|
---|
526 | //cout << "not culling" << endl;
|
---|
527 | glDisable(GL_CULL_FACE);
|
---|
528 | }
|
---|
529 |
|
---|
530 |
|
---|
531 | //const int numQ = 1;
|
---|
532 | const int numQ = (int)mOcclusionQueries.size();
|
---|
533 |
|
---|
534 | //glFinish();
|
---|
535 | #if 0
|
---|
536 | //-- now issue queries for all objects
|
---|
537 | for (int j = 0; j < (int)mObjects.size(); ++ j)
|
---|
538 | {
|
---|
539 | mOcclusionQueries[j]->BeginQuery();
|
---|
540 | RenderIntersectable(mObjects[j]);
|
---|
541 | mOcclusionQueries[j]->EndQuery();
|
---|
542 |
|
---|
543 | unsigned int pixelCount;
|
---|
544 |
|
---|
545 | pixelCount = mOcclusionQueries[j]->GetQueryResult();
|
---|
546 | mObjects[j]->mCounter += pixelCount;
|
---|
547 | }
|
---|
548 | #else
|
---|
549 |
|
---|
550 | int q = 0;
|
---|
551 |
|
---|
552 | //-- now issue queries for all objects
|
---|
553 | for (int j = 0; j < (int)mObjects.size(); j += q)
|
---|
554 | {
|
---|
555 | for (q = 0; ((j + q) < (int)mObjects.size()) && (q < numQ); ++ q)
|
---|
556 | {
|
---|
557 | //glFinish();
|
---|
558 | mOcclusionQueries[q]->BeginQuery();
|
---|
559 |
|
---|
560 | RenderIntersectable(mObjects[j + q]);
|
---|
561 |
|
---|
562 | mOcclusionQueries[q]->EndQuery();
|
---|
563 | //glFinish();
|
---|
564 | }
|
---|
565 | //cout << "q: " << q << endl;
|
---|
566 | // collect results of the queries
|
---|
567 | for (int t = 0; t < q; ++ t)
|
---|
568 | {
|
---|
569 | unsigned int pixelCount;
|
---|
570 |
|
---|
571 | //-- reenable other state
|
---|
572 | #if 0
|
---|
573 | bool available;
|
---|
574 |
|
---|
575 | do
|
---|
576 | {
|
---|
577 | available = mOcclusionQueries[t]->ResultAvailable();
|
---|
578 |
|
---|
579 | if (!available) cout << "W";
|
---|
580 | }
|
---|
581 | while (!available);
|
---|
582 | #endif
|
---|
583 |
|
---|
584 | pixelCount = mOcclusionQueries[t]->GetQueryResult();
|
---|
585 |
|
---|
586 | //if (pixelCount > 0)
|
---|
587 | // cout <<"o="<<j+q<<" q="<<mOcclusionQueries[q]->GetQueryId()<<" pc="<<pixelCount<<" ";
|
---|
588 | mObjects[j + t]->mCounter += pixelCount;
|
---|
589 | }
|
---|
590 |
|
---|
591 | //j += q;
|
---|
592 | }
|
---|
593 | #endif
|
---|
594 | //glFinish();
|
---|
595 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
596 | glDepthMask(GL_TRUE);
|
---|
597 |
|
---|
598 | glEnable(GL_CULL_FACE);
|
---|
599 | }
|
---|
600 |
|
---|
601 |
|
---|
602 | void
|
---|
603 | GlRendererBuffer::EvalRenderCostSample(RenderCostSample &sample,
|
---|
604 | const bool useOcclusionQueries,
|
---|
605 | const int threshold
|
---|
606 | )
|
---|
607 | {
|
---|
608 | // choose a random view point
|
---|
609 | mViewCellsManager->GetViewPoint(mViewPoint);
|
---|
610 | sample.mPosition = mViewPoint;
|
---|
611 | //cout << "viewpoint: " << mViewPoint << endl;
|
---|
612 |
|
---|
613 | // take a render cost sample by rendering a cube
|
---|
614 | Vector3 directions[6];
|
---|
615 |
|
---|
616 | directions[0] = Vector3(1,0,0);
|
---|
617 | directions[1] = Vector3(0,1,0);
|
---|
618 | directions[2] = Vector3(0,0,1);
|
---|
619 | directions[3] = Vector3(-1,0,0);
|
---|
620 | directions[4] = Vector3(0,-1,0);
|
---|
621 | directions[5] = Vector3(0,0,-1);
|
---|
622 |
|
---|
623 | sample.mVisibleObjects = 0;
|
---|
624 |
|
---|
625 | // reset object counters
|
---|
626 | ObjectContainer::const_iterator it, it_end = mObjects.end();
|
---|
627 |
|
---|
628 | for (it = mObjects.begin(); it != it_end; ++ it)
|
---|
629 | {
|
---|
630 | (*it)->mCounter = 0;
|
---|
631 | }
|
---|
632 |
|
---|
633 | ++ mFrame;
|
---|
634 |
|
---|
635 | //glCullFace(GL_FRONT);
|
---|
636 | glCullFace(GL_BACK);
|
---|
637 | glDisable(GL_CULL_FACE);
|
---|
638 |
|
---|
639 |
|
---|
640 | // query all 6 directions for a full point sample
|
---|
641 | for (int i = 0; i < 6; ++ i)
|
---|
642 | {
|
---|
643 | mViewDirection = directions[i];
|
---|
644 | SetupCamera();
|
---|
645 |
|
---|
646 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
647 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
648 | //glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); glDepthMask(GL_TRUE);
|
---|
649 | glDepthFunc(GL_LESS);
|
---|
650 |
|
---|
651 | mUseFalseColors = true;
|
---|
652 |
|
---|
653 | // the actual scene rendering fills the depth (for occlusion queries)
|
---|
654 | // and the frame buffer (for item buffer)
|
---|
655 | RenderScene();
|
---|
656 |
|
---|
657 |
|
---|
658 | if (0)
|
---|
659 | {
|
---|
660 | char filename[256];
|
---|
661 | sprintf(filename, "snap/frame-%04d-%d.png", mFrame, i);
|
---|
662 | QImage im = toImage();
|
---|
663 | im.save(filename, "PNG");
|
---|
664 | }
|
---|
665 |
|
---|
666 | // evaluate the sample
|
---|
667 | if (useOcclusionQueries)
|
---|
668 | {
|
---|
669 | EvalQueryWithOcclusionQueries();
|
---|
670 | }
|
---|
671 | else
|
---|
672 | {
|
---|
673 | EvalQueryWithItemBuffer();
|
---|
674 | }
|
---|
675 | }
|
---|
676 |
|
---|
677 | // now evaluate the statistics over that sample
|
---|
678 | // currently only the number of visible objects is taken into account
|
---|
679 | sample.Reset();
|
---|
680 |
|
---|
681 | for (it = mObjects.begin(); it != it_end; ++ it)
|
---|
682 | {
|
---|
683 | Intersectable *obj = *it;
|
---|
684 | if (obj->mCounter >= threshold)
|
---|
685 | {
|
---|
686 | ++ sample.mVisibleObjects;
|
---|
687 | sample.mVisiblePixels += obj->mCounter;
|
---|
688 | }
|
---|
689 | }
|
---|
690 |
|
---|
691 | //cout << "RS=" << sample.mVisibleObjects << " ";
|
---|
692 | }
|
---|
693 |
|
---|
694 |
|
---|
695 | void
|
---|
696 | GlRendererBuffer::SampleRenderCost(const int numSamples,
|
---|
697 | vector<RenderCostSample> &samples,
|
---|
698 | const bool useOcclusionQueries,
|
---|
699 | const int threshold
|
---|
700 | )
|
---|
701 | {
|
---|
702 | makeCurrent();
|
---|
703 |
|
---|
704 | if (mPixelBuffer == NULL)
|
---|
705 | mPixelBuffer = new unsigned int[GetWidth()*GetHeight()];
|
---|
706 |
|
---|
707 | // using 90 degree projection to capture 360 view with 6 samples
|
---|
708 | SetupProjection(GetHeight(), GetHeight(), 90.0f);
|
---|
709 |
|
---|
710 | //samples.resize(numSamples);
|
---|
711 | halton.Reset();
|
---|
712 |
|
---|
713 | // the number of queries queried in batch mode
|
---|
714 | const int numQ = 500;
|
---|
715 |
|
---|
716 | //const int numQ = (int)mObjects.size();
|
---|
717 | if (useOcclusionQueries)
|
---|
718 | {
|
---|
719 | cout << "\ngenerating " << numQ << " queries ... ";
|
---|
720 | OcclusionQuery::GenQueries(mOcclusionQueries, numQ);
|
---|
721 | cout << "finished" << endl;
|
---|
722 | }
|
---|
723 |
|
---|
724 | // sampling queries
|
---|
725 | for (int i = 0; i < numSamples; ++ i)
|
---|
726 | {
|
---|
727 | cout << ".";
|
---|
728 | EvalRenderCostSample(samples[i], useOcclusionQueries, threshold);
|
---|
729 | }
|
---|
730 |
|
---|
731 | doneCurrent();
|
---|
732 |
|
---|
733 | }
|
---|
734 |
|
---|
735 |
|
---|
736 | void
|
---|
737 | GlRendererBuffer::RandomViewPoint()
|
---|
738 | {
|
---|
739 | // do not use this function since it could return different viewpoints for
|
---|
740 | // different executions of the algorithm
|
---|
741 |
|
---|
742 | //mViewCellsManager->GetViewPoint(mViewPoint);
|
---|
743 |
|
---|
744 | while (1) {
|
---|
745 | Vector3 pVector = Vector3(halton.GetNumber(1),
|
---|
746 | halton.GetNumber(2),
|
---|
747 | halton.GetNumber(3));
|
---|
748 |
|
---|
749 | mViewPoint = mSceneGraph->GetBox().GetPoint(pVector);
|
---|
750 | ViewCell *v = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
751 | if (v && v->GetValid())
|
---|
752 | break;
|
---|
753 | // generate a new vector
|
---|
754 | halton.GenerateNext();
|
---|
755 | }
|
---|
756 |
|
---|
757 |
|
---|
758 | Vector3 dVector = Vector3(2*M_PI*halton.GetNumber(4),
|
---|
759 | M_PI*halton.GetNumber(5),
|
---|
760 | 0.0f);
|
---|
761 |
|
---|
762 | mViewDirection = Normalize(Vector3(sin(dVector.x),
|
---|
763 | // cos(dVector.y),
|
---|
764 | 0.0f,
|
---|
765 | cos(dVector.x)));
|
---|
766 | halton.GenerateNext();
|
---|
767 | }
|
---|
768 |
|
---|
769 |
|
---|
770 | GlRendererBuffer::GlRendererBuffer(const int w,
|
---|
771 | const int h,
|
---|
772 | SceneGraph *sceneGraph,
|
---|
773 | ViewCellsManager *viewcells,
|
---|
774 | KdTree *tree):
|
---|
775 | QGLPixelBuffer(QSize(w, h)), GlRenderer(sceneGraph, viewcells, tree) {
|
---|
776 |
|
---|
777 | Environment::GetSingleton()->GetIntValue("Preprocessor.pvsRenderErrorSamples", mPvsStatFrames);
|
---|
778 | mPvsErrorBuffer.resize(mPvsStatFrames);
|
---|
779 | ClearErrorBuffer();
|
---|
780 |
|
---|
781 | mPixelBuffer = NULL;
|
---|
782 |
|
---|
783 | makeCurrent();
|
---|
784 | InitGL();
|
---|
785 | doneCurrent();
|
---|
786 |
|
---|
787 | }
|
---|
788 |
|
---|
789 | float
|
---|
790 | GlRendererBuffer::GetPixelError(int &pvsSize)
|
---|
791 | {
|
---|
792 | float pErrorPixels = -1.0f;
|
---|
793 |
|
---|
794 | glReadBuffer(GL_BACK);
|
---|
795 |
|
---|
796 | // mUseFalseColors = true;
|
---|
797 |
|
---|
798 | mUseFalseColors = false;
|
---|
799 | unsigned int pixelCount;
|
---|
800 |
|
---|
801 | //static int query = -1;
|
---|
802 | //if (query == -1)
|
---|
803 | // glGenOcclusionQueriesNV(1, (unsigned int *)&query);
|
---|
804 |
|
---|
805 | OcclusionQuery query;
|
---|
806 |
|
---|
807 | if (mDetectEmptyViewSpace) {
|
---|
808 | // now check whether any backfacing polygon would pass the depth test
|
---|
809 | SetupCamera();
|
---|
810 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
811 | glEnable( GL_CULL_FACE );
|
---|
812 |
|
---|
813 | RenderScene();
|
---|
814 |
|
---|
815 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
816 | glDepthMask(GL_FALSE);
|
---|
817 | glDisable( GL_CULL_FACE );
|
---|
818 |
|
---|
819 | query.BeginQuery();
|
---|
820 |
|
---|
821 | RenderScene();
|
---|
822 |
|
---|
823 | query.EndQuery();
|
---|
824 |
|
---|
825 | // at this point, if possible, go and do some other computation
|
---|
826 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
827 | glDepthMask(GL_TRUE);
|
---|
828 | glEnable( GL_CULL_FACE );
|
---|
829 |
|
---|
830 | // reenable other state
|
---|
831 | pixelCount = query.GetQueryResult();
|
---|
832 |
|
---|
833 | if (pixelCount > 0)
|
---|
834 | return -1.0f; // backfacing polygon found -> not a valid viewspace sample
|
---|
835 | } else
|
---|
836 | glDisable( GL_CULL_FACE );
|
---|
837 |
|
---|
838 |
|
---|
839 | ViewCell *viewcell = NULL;
|
---|
840 |
|
---|
841 | PrVs prvs;
|
---|
842 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
843 | mViewCellsManager->GetPrVS(mViewPoint, prvs, mViewCellsManager->GetFilterWidth());
|
---|
844 | viewcell = prvs.mViewCell;
|
---|
845 |
|
---|
846 | // ViewCell *viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
847 | pvsSize = 0;
|
---|
848 | if (viewcell) {
|
---|
849 | SetupCamera();
|
---|
850 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
851 |
|
---|
852 | glColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);
|
---|
853 |
|
---|
854 | // Render PVS
|
---|
855 | std::map<Intersectable *,
|
---|
856 | PvsData<Intersectable *>,
|
---|
857 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
858 |
|
---|
859 | pvsSize = viewcell->GetPvs().mEntries.size();
|
---|
860 |
|
---|
861 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
862 | Intersectable *object = (*it).first;
|
---|
863 | RenderIntersectable(object);
|
---|
864 | }
|
---|
865 |
|
---|
866 | // glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
867 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
868 | mUseFalseColors = true;
|
---|
869 |
|
---|
870 | query.BeginQuery();
|
---|
871 |
|
---|
872 | SetupCamera();
|
---|
873 |
|
---|
874 | RenderScene();
|
---|
875 |
|
---|
876 | query.EndQuery();
|
---|
877 |
|
---|
878 |
|
---|
879 | unsigned int pixelCount;
|
---|
880 | // reenable other state
|
---|
881 | pixelCount = query.GetQueryResult();
|
---|
882 |
|
---|
883 |
|
---|
884 | pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());
|
---|
885 | if (mSnapErrorFrames && pErrorPixels > 0.01) {
|
---|
886 |
|
---|
887 | char filename[256];
|
---|
888 | sprintf(filename, "error-frame-%04d-%0.5f.png", mFrame, pErrorPixels);
|
---|
889 | QImage im = toImage();
|
---|
890 | im.save(mSnapPrefix + filename, "PNG");
|
---|
891 | if (1) { //0 && mFrame == 1543) {
|
---|
892 | int x,y;
|
---|
893 | int lastIndex = -1;
|
---|
894 | for (y=0; y < im.height(); y++)
|
---|
895 | for (x=0; x < im.width(); x++) {
|
---|
896 | QRgb p = im.pixel(x,y);
|
---|
897 | int index = qRed(p) + (qGreen(p)<<8) + (qBlue(p)<<16);
|
---|
898 | if (qGreen(p) != 255 && index!=0) {
|
---|
899 | if (index != lastIndex) {
|
---|
900 | Debug<<"ei="<<index<<" ";
|
---|
901 | lastIndex = index;
|
---|
902 | }
|
---|
903 | }
|
---|
904 | }
|
---|
905 | }
|
---|
906 |
|
---|
907 |
|
---|
908 | mUseFalseColors = false;
|
---|
909 | glPushAttrib(GL_CURRENT_BIT);
|
---|
910 | glColor3f(0,1,0);
|
---|
911 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
912 | SetupCamera();
|
---|
913 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
914 |
|
---|
915 | // Render PVS
|
---|
916 | std::map<Intersectable *,
|
---|
917 | PvsData<Intersectable *>,
|
---|
918 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
919 |
|
---|
920 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
921 | Intersectable *object = (*it).first;
|
---|
922 | RenderIntersectable(object);
|
---|
923 | }
|
---|
924 |
|
---|
925 | im = toImage();
|
---|
926 | sprintf(filename, "error-frame-%04d-%0.5f-pvs.png", mFrame, pErrorPixels);
|
---|
927 | im.save(mSnapPrefix + filename, "PNG");
|
---|
928 | glPopAttrib();
|
---|
929 | }
|
---|
930 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
931 | }
|
---|
932 |
|
---|
933 | if (viewcell)
|
---|
934 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
935 |
|
---|
936 | return pErrorPixels;
|
---|
937 | }
|
---|
938 |
|
---|
939 |
|
---|
940 | void
|
---|
941 | GlRendererWidget::SetupProjection(const int w, const int h, const float angle)
|
---|
942 | {
|
---|
943 | if (!mTopView)
|
---|
944 | GlRenderer::SetupProjection(w, h, angle);
|
---|
945 | else {
|
---|
946 | glViewport(0, 0, w, h);
|
---|
947 | glMatrixMode(GL_PROJECTION);
|
---|
948 | glLoadIdentity();
|
---|
949 | gluPerspective(50.0, 1.0, 0.1, 20.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
|
---|
950 | glMatrixMode(GL_MODELVIEW);
|
---|
951 | }
|
---|
952 | }
|
---|
953 |
|
---|
954 | void
|
---|
955 | GlRendererWidget::RenderPvs()
|
---|
956 | {
|
---|
957 | SetupCamera();
|
---|
958 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
959 |
|
---|
960 | ViewCell *viewcell = NULL;
|
---|
961 |
|
---|
962 | PrVs prvs;
|
---|
963 |
|
---|
964 | if (!mUseFilter) {
|
---|
965 | viewcell = mViewCellsManager->GetViewCell(mViewPoint, true);
|
---|
966 | } else {
|
---|
967 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
968 | mViewCellsManager->GetPrVS(mViewPoint, prvs, mViewCellsManager->GetFilterWidth());
|
---|
969 | viewcell = prvs.mViewCell;
|
---|
970 | }
|
---|
971 |
|
---|
972 | if (viewcell) {
|
---|
973 | // copy the pvs so that it can be filtered...
|
---|
974 | ObjectPvs pvs = viewcell->GetPvs();
|
---|
975 |
|
---|
976 | if (mUseSpatialFilter) {
|
---|
977 | mViewCellsManager->ApplySpatialFilter(mKdTree,
|
---|
978 | mSpatialFilterSize*
|
---|
979 | Magnitude(mViewCellsManager->GetViewSpaceBox().Size()),
|
---|
980 | pvs);
|
---|
981 | }
|
---|
982 |
|
---|
983 |
|
---|
984 | // read back the texture
|
---|
985 | std::map<Intersectable *,
|
---|
986 | PvsData<Intersectable *>,
|
---|
987 | LtSample<Intersectable *> >::const_iterator it = pvs.mEntries.begin();
|
---|
988 |
|
---|
989 | mPvsSize = pvs.mEntries.size();
|
---|
990 |
|
---|
991 | for (; it != pvs.mEntries.end(); ++ it) {
|
---|
992 | Intersectable *object = (*it).first;
|
---|
993 | float visibility = log10((*it).second.mSumPdf + 1)/5.0f;
|
---|
994 | glColor3f(visibility, 0.0f, 0.0f);
|
---|
995 | mUseForcedColors = true;
|
---|
996 | RenderIntersectable(object);
|
---|
997 | mUseForcedColors = false;
|
---|
998 | }
|
---|
999 |
|
---|
1000 | if (mRenderFilter) {
|
---|
1001 | mWireFrame = true;
|
---|
1002 | RenderIntersectable(viewcell);
|
---|
1003 | mWireFrame = false;
|
---|
1004 | }
|
---|
1005 |
|
---|
1006 | if (mUseFilter)
|
---|
1007 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
1008 | } else {
|
---|
1009 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
1010 | for (; oi != mObjects.end(); oi++)
|
---|
1011 | RenderIntersectable(*oi);
|
---|
1012 | }
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 | float
|
---|
1016 | GlRendererWidget::RenderErrors()
|
---|
1017 | {
|
---|
1018 | float pErrorPixels = -1.0f;
|
---|
1019 |
|
---|
1020 | glReadBuffer(GL_BACK);
|
---|
1021 |
|
---|
1022 | mUseFalseColors = true;
|
---|
1023 |
|
---|
1024 | SetupCamera();
|
---|
1025 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1026 |
|
---|
1027 | double eq[4];
|
---|
1028 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
1029 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
1030 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
1031 | eq[3] = mSceneCutPlane.mD;
|
---|
1032 |
|
---|
1033 | if (mCutScene) {
|
---|
1034 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
1035 | glEnable(GL_CLIP_PLANE0);
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | if (mDetectEmptyViewSpace)
|
---|
1039 | glEnable( GL_CULL_FACE );
|
---|
1040 | else
|
---|
1041 | glDisable( GL_CULL_FACE );
|
---|
1042 |
|
---|
1043 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
1044 | for (; oi != mObjects.end(); oi++)
|
---|
1045 | RenderIntersectable(*oi);
|
---|
1046 |
|
---|
1047 | ViewCell *viewcell = NULL;
|
---|
1048 |
|
---|
1049 | QImage im1, im2;
|
---|
1050 | QImage diff;
|
---|
1051 |
|
---|
1052 | if (viewcell) {
|
---|
1053 | // read back the texture
|
---|
1054 | im1 = grabFrameBuffer(true);
|
---|
1055 |
|
---|
1056 | RenderPvs();
|
---|
1057 |
|
---|
1058 | // read back the texture
|
---|
1059 | im2 = grabFrameBuffer(true);
|
---|
1060 |
|
---|
1061 | diff = im1;
|
---|
1062 | int x, y;
|
---|
1063 | int errorPixels = 0;
|
---|
1064 |
|
---|
1065 | for (y = 0; y < im1.height(); y++)
|
---|
1066 | for (x = 0; x < im1.width(); x++)
|
---|
1067 | if (im1.pixel(x, y) == im2.pixel(x, y))
|
---|
1068 | diff.setPixel(x, y, qRgba(0,0,0,0));
|
---|
1069 | else {
|
---|
1070 | diff.setPixel(x, y, qRgba(255,128,128,255));
|
---|
1071 | errorPixels++;
|
---|
1072 | }
|
---|
1073 | pErrorPixels = ((float)errorPixels)/(im1.height()*im1.width());
|
---|
1074 | }
|
---|
1075 |
|
---|
1076 | // now render the pvs again
|
---|
1077 | SetupCamera();
|
---|
1078 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1079 | mUseFalseColors = false;
|
---|
1080 |
|
---|
1081 | oi = mObjects.begin();
|
---|
1082 | for (; oi != mObjects.end(); oi++)
|
---|
1083 | RenderIntersectable(*oi);
|
---|
1084 |
|
---|
1085 | // now render im1
|
---|
1086 | if (viewcell) {
|
---|
1087 | if (0 && mTopView) {
|
---|
1088 | mWireFrame = true;
|
---|
1089 | RenderIntersectable(viewcell);
|
---|
1090 | mWireFrame = false;
|
---|
1091 | }
|
---|
1092 |
|
---|
1093 | // init ortographic projection
|
---|
1094 | glMatrixMode(GL_PROJECTION);
|
---|
1095 | glPushMatrix();
|
---|
1096 |
|
---|
1097 | glLoadIdentity();
|
---|
1098 | gluOrtho2D(0, 1.0f, 0, 1.0f);
|
---|
1099 |
|
---|
1100 | glMatrixMode(GL_MODELVIEW);
|
---|
1101 | glLoadIdentity();
|
---|
1102 |
|
---|
1103 | bindTexture(diff);
|
---|
1104 |
|
---|
1105 | glPushAttrib(GL_ENABLE_BIT);
|
---|
1106 | glEnable( GL_ALPHA_TEST );
|
---|
1107 | glDisable( GL_CULL_FACE );
|
---|
1108 | glAlphaFunc( GL_GREATER, 0.5 );
|
---|
1109 |
|
---|
1110 | glEnable( GL_TEXTURE_2D );
|
---|
1111 | glBegin(GL_QUADS);
|
---|
1112 |
|
---|
1113 | glTexCoord2f(0,0);
|
---|
1114 | glVertex3f(0,0,0);
|
---|
1115 |
|
---|
1116 | glTexCoord2f(1,0);
|
---|
1117 | glVertex3f( 1, 0, 0);
|
---|
1118 |
|
---|
1119 | glTexCoord2f(1,1);
|
---|
1120 | glVertex3f( 1, 1, 0);
|
---|
1121 |
|
---|
1122 | glTexCoord2f(0,1);
|
---|
1123 | glVertex3f(0, 1, 0);
|
---|
1124 | glEnd();
|
---|
1125 |
|
---|
1126 | glPopAttrib();
|
---|
1127 |
|
---|
1128 | // restore the projection matrix
|
---|
1129 | glMatrixMode(GL_PROJECTION);
|
---|
1130 | glPopMatrix();
|
---|
1131 | glMatrixMode(GL_MODELVIEW);
|
---|
1132 | }
|
---|
1133 |
|
---|
1134 | glDisable(GL_CLIP_PLANE0);
|
---|
1135 |
|
---|
1136 | mRenderError = pErrorPixels;
|
---|
1137 | return pErrorPixels;
|
---|
1138 | }
|
---|
1139 |
|
---|
1140 | void
|
---|
1141 | GlRenderer::_RenderScene()
|
---|
1142 | {
|
---|
1143 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
1144 |
|
---|
1145 | for (; oi != mObjects.end(); oi++)
|
---|
1146 | RenderIntersectable(*oi);
|
---|
1147 | }
|
---|
1148 |
|
---|
1149 | bool
|
---|
1150 | GlRenderer::RenderScene()
|
---|
1151 | {
|
---|
1152 | static int glList = -1;
|
---|
1153 | if (mUseGlLists) {
|
---|
1154 | if (glList == -1) {
|
---|
1155 | glList = glGenLists(1);
|
---|
1156 | glNewList(glList, GL_COMPILE);
|
---|
1157 | _RenderScene();
|
---|
1158 | glEndList();
|
---|
1159 | }
|
---|
1160 | glCallList(glList);
|
---|
1161 | } else
|
---|
1162 | _RenderScene();
|
---|
1163 |
|
---|
1164 |
|
---|
1165 | return true;
|
---|
1166 | }
|
---|
1167 |
|
---|
1168 |
|
---|
1169 | void
|
---|
1170 | GlRendererBuffer::ClearErrorBuffer()
|
---|
1171 | {
|
---|
1172 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
1173 | mPvsErrorBuffer[i].mError = 1.0f;
|
---|
1174 | }
|
---|
1175 | }
|
---|
1176 |
|
---|
1177 |
|
---|
1178 | void
|
---|
1179 | GlRendererBuffer::EvalPvsStat()
|
---|
1180 | {
|
---|
1181 | mPvsStat.Reset();
|
---|
1182 | halton.Reset();
|
---|
1183 |
|
---|
1184 | makeCurrent();
|
---|
1185 | SetupProjection(GetWidth(), GetHeight());
|
---|
1186 |
|
---|
1187 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
1188 | float err;
|
---|
1189 | // set frame id for saving the error buffer
|
---|
1190 | mFrame = i;
|
---|
1191 | RandomViewPoint();
|
---|
1192 |
|
---|
1193 | // atlanta problematic frames: 325 525 691 1543
|
---|
1194 | #if 0
|
---|
1195 | if (mFrame != 325 &&
|
---|
1196 | mFrame != 525 &&
|
---|
1197 | mFrame != 691 &&
|
---|
1198 | mFrame != 1543)
|
---|
1199 | mPvsErrorBuffer[i] = -1;
|
---|
1200 | else {
|
---|
1201 | Debug<<"frame ="<<mFrame<<" vp="<<mViewPoint<<" vd="<<mViewDirection<<endl;
|
---|
1202 | }
|
---|
1203 | #endif
|
---|
1204 | if (mPvsErrorBuffer[i].mError > 0.0f) {
|
---|
1205 | int pvsSize;
|
---|
1206 | float error = GetPixelError(pvsSize);
|
---|
1207 | mPvsErrorBuffer[i].mError = error;
|
---|
1208 | mPvsErrorBuffer[i].mPvsSize = pvsSize;
|
---|
1209 |
|
---|
1210 | emit UpdatePvsErrorItem(i,
|
---|
1211 | mPvsErrorBuffer[i]);
|
---|
1212 |
|
---|
1213 | cout<<"("<<i<<","<<mPvsErrorBuffer[i].mError<<")";
|
---|
1214 | // swapBuffers();
|
---|
1215 | }
|
---|
1216 |
|
---|
1217 | err = mPvsErrorBuffer[i].mError;
|
---|
1218 |
|
---|
1219 | if (err >= 0.0f) {
|
---|
1220 | if (err > mPvsStat.maxError)
|
---|
1221 | mPvsStat.maxError = err;
|
---|
1222 | mPvsStat.sumError += err;
|
---|
1223 | mPvsStat.sumPvsSize += mPvsErrorBuffer[i].mPvsSize;
|
---|
1224 |
|
---|
1225 | if (err == 0.0f)
|
---|
1226 | mPvsStat.errorFreeFrames++;
|
---|
1227 | mPvsStat.frames++;
|
---|
1228 | }
|
---|
1229 | }
|
---|
1230 |
|
---|
1231 | glFinish();
|
---|
1232 | doneCurrent();
|
---|
1233 |
|
---|
1234 | cout<<endl<<flush;
|
---|
1235 | // mRenderingFinished.wakeAll();
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 |
|
---|
1239 |
|
---|
1240 |
|
---|
1241 |
|
---|
1242 | void
|
---|
1243 | GlRendererWidget::mousePressEvent(QMouseEvent *e)
|
---|
1244 | {
|
---|
1245 | int x = e->pos().x();
|
---|
1246 | int y = e->pos().y();
|
---|
1247 |
|
---|
1248 | mousePoint.x = x;
|
---|
1249 | mousePoint.y = y;
|
---|
1250 |
|
---|
1251 | }
|
---|
1252 |
|
---|
1253 | void
|
---|
1254 | GlRendererWidget::mouseMoveEvent(QMouseEvent *e)
|
---|
1255 | {
|
---|
1256 | float MOVE_SENSITIVITY = Magnitude(mSceneGraph->GetBox().Diagonal())*1e-3;
|
---|
1257 | float TURN_SENSITIVITY=0.1f;
|
---|
1258 | float TILT_SENSITIVITY=32.0 ;
|
---|
1259 | float TURN_ANGLE= M_PI/36.0 ;
|
---|
1260 |
|
---|
1261 | int x = e->pos().x();
|
---|
1262 | int y = e->pos().y();
|
---|
1263 |
|
---|
1264 | if (e->modifiers() & Qt::ControlModifier) {
|
---|
1265 | mViewPoint.y += (y-mousePoint.y)*MOVE_SENSITIVITY/2.0;
|
---|
1266 | mViewPoint.x += (x-mousePoint.x)*MOVE_SENSITIVITY/2.0;
|
---|
1267 | } else {
|
---|
1268 | mViewPoint += mViewDirection*((mousePoint.y - y)*MOVE_SENSITIVITY);
|
---|
1269 | float adiff = TURN_ANGLE*(x - mousePoint.x)*-TURN_SENSITIVITY;
|
---|
1270 | float angle = atan2(mViewDirection.x, mViewDirection.z);
|
---|
1271 | mViewDirection.x = sin(angle+adiff);
|
---|
1272 | mViewDirection.z = cos(angle+adiff);
|
---|
1273 | }
|
---|
1274 |
|
---|
1275 | mousePoint.x = x;
|
---|
1276 | mousePoint.y = y;
|
---|
1277 |
|
---|
1278 | updateGL();
|
---|
1279 | }
|
---|
1280 |
|
---|
1281 | void
|
---|
1282 | GlRendererWidget::mouseReleaseEvent(QMouseEvent *)
|
---|
1283 | {
|
---|
1284 |
|
---|
1285 |
|
---|
1286 | }
|
---|
1287 |
|
---|
1288 | void
|
---|
1289 | GlRendererWidget::resizeGL(int w, int h)
|
---|
1290 | {
|
---|
1291 | SetupProjection(w, h);
|
---|
1292 | updateGL();
|
---|
1293 | }
|
---|
1294 |
|
---|
1295 | void
|
---|
1296 | GlRendererWidget::paintGL()
|
---|
1297 | {
|
---|
1298 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1299 |
|
---|
1300 |
|
---|
1301 | if (!mRenderViewCells) {
|
---|
1302 | if (mRenderErrors)
|
---|
1303 | RenderErrors();
|
---|
1304 | else
|
---|
1305 | RenderPvs();
|
---|
1306 | RenderInfo();
|
---|
1307 | } else {
|
---|
1308 | RenderViewCells();
|
---|
1309 |
|
---|
1310 | mWireFrame = true;
|
---|
1311 | RenderScene();
|
---|
1312 | mWireFrame = false;
|
---|
1313 |
|
---|
1314 | RenderInfo();
|
---|
1315 | }
|
---|
1316 |
|
---|
1317 | mFrame++;
|
---|
1318 | }
|
---|
1319 |
|
---|
1320 |
|
---|
1321 | void
|
---|
1322 | GlRendererWidget::SetupCamera()
|
---|
1323 | {
|
---|
1324 | if (!mTopView)
|
---|
1325 | GlRenderer::SetupCamera();
|
---|
1326 | else {
|
---|
1327 | if (0) {
|
---|
1328 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*0.05;
|
---|
1329 | Vector3 pos = mViewPoint - dist*Vector3(mViewDirection.x,
|
---|
1330 | -1,
|
---|
1331 | mViewDirection.y);
|
---|
1332 |
|
---|
1333 | Vector3 target = mViewPoint + dist*mViewDirection;
|
---|
1334 | Vector3 up(0,1,0);
|
---|
1335 |
|
---|
1336 | glLoadIdentity();
|
---|
1337 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1338 | target.x, target.y, target.z,
|
---|
1339 | up.x, up.y, up.z);
|
---|
1340 | } else {
|
---|
1341 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*mTopDistance;
|
---|
1342 | Vector3 pos = mViewPoint + dist*Vector3(0,
|
---|
1343 | 1,
|
---|
1344 | 0);
|
---|
1345 |
|
---|
1346 | Vector3 target = mViewPoint;
|
---|
1347 | Vector3 up(mViewDirection.x, 0, mViewDirection.z);
|
---|
1348 |
|
---|
1349 | glLoadIdentity();
|
---|
1350 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1351 | target.x, target.y, target.z,
|
---|
1352 | up.x, up.y, up.z);
|
---|
1353 |
|
---|
1354 | }
|
---|
1355 | }
|
---|
1356 |
|
---|
1357 | }
|
---|
1358 |
|
---|
1359 | void
|
---|
1360 | GlRendererWidget::keyPressEvent ( QKeyEvent * e )
|
---|
1361 | {
|
---|
1362 | switch (e->key()) {
|
---|
1363 | case Qt::Key_T:
|
---|
1364 | mTopView = !mTopView;
|
---|
1365 | SetupProjection(width(), height());
|
---|
1366 | updateGL();
|
---|
1367 | break;
|
---|
1368 | case Qt::Key_V:
|
---|
1369 | mRenderViewCells = !mRenderViewCells;
|
---|
1370 | updateGL();
|
---|
1371 | break;
|
---|
1372 | default:
|
---|
1373 | e->ignore();
|
---|
1374 | break;
|
---|
1375 | }
|
---|
1376 | }
|
---|
1377 |
|
---|
1378 |
|
---|
1379 | RendererControlWidget::RendererControlWidget(QWidget * parent, Qt::WFlags f):
|
---|
1380 | QWidget(parent, f)
|
---|
1381 | {
|
---|
1382 |
|
---|
1383 | QVBoxLayout *vl = new QVBoxLayout;
|
---|
1384 | setLayout(vl);
|
---|
1385 |
|
---|
1386 | QWidget *vbox = new QGroupBox("ViewCells", this);
|
---|
1387 | layout()->addWidget(vbox);
|
---|
1388 |
|
---|
1389 | vl = new QVBoxLayout;
|
---|
1390 | vbox->setLayout(vl);
|
---|
1391 |
|
---|
1392 | QLabel *label = new QLabel("Granularity");
|
---|
1393 | vbox->layout()->addWidget(label);
|
---|
1394 |
|
---|
1395 | QSlider *slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1396 | vl->addWidget(slider);
|
---|
1397 | slider->show();
|
---|
1398 | slider->setRange(1, 10000);
|
---|
1399 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1400 | slider->setValue(200);
|
---|
1401 |
|
---|
1402 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetViewCellGranularity(int)));
|
---|
1403 |
|
---|
1404 | label = new QLabel("Filter size");
|
---|
1405 | vbox->layout()->addWidget(label);
|
---|
1406 |
|
---|
1407 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1408 | vbox->layout()->addWidget(slider);
|
---|
1409 | slider->show();
|
---|
1410 | slider->setRange(1, 100);
|
---|
1411 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1412 | slider->setValue(3);
|
---|
1413 |
|
---|
1414 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetVisibilityFilterSize(int)));
|
---|
1415 |
|
---|
1416 |
|
---|
1417 | label = new QLabel("Spatial Filter size");
|
---|
1418 | vbox->layout()->addWidget(label);
|
---|
1419 |
|
---|
1420 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1421 | vbox->layout()->addWidget(slider);
|
---|
1422 | slider->show();
|
---|
1423 | slider->setRange(1, 100);
|
---|
1424 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1425 | slider->setValue(10);
|
---|
1426 |
|
---|
1427 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSpatialFilterSize(int)));
|
---|
1428 |
|
---|
1429 |
|
---|
1430 |
|
---|
1431 | QWidget *hbox = new QWidget(vbox);
|
---|
1432 | vl->addWidget(hbox);
|
---|
1433 | QHBoxLayout *hlayout = new QHBoxLayout;
|
---|
1434 | hbox->setLayout(hlayout);
|
---|
1435 |
|
---|
1436 | QCheckBox *cb = new QCheckBox("Show viewcells", hbox);
|
---|
1437 | hlayout->addWidget(cb);
|
---|
1438 | cb->setChecked(false);
|
---|
1439 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowViewCells(bool)));
|
---|
1440 |
|
---|
1441 | cb = new QCheckBox("Show render cost", hbox);
|
---|
1442 | hlayout->addWidget(cb);
|
---|
1443 | cb->setChecked(false);
|
---|
1444 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowRenderCost(bool)));
|
---|
1445 |
|
---|
1446 | cb = new QCheckBox("Show pvs sizes", hbox);
|
---|
1447 | hlayout->addWidget(cb);
|
---|
1448 | cb->setChecked(false);
|
---|
1449 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowPvsSizes(bool)));
|
---|
1450 |
|
---|
1451 | vbox->resize(800,100);
|
---|
1452 |
|
---|
1453 |
|
---|
1454 | vbox = new QGroupBox("Rendering", this);
|
---|
1455 | layout()->addWidget(vbox);
|
---|
1456 |
|
---|
1457 | vl = new QVBoxLayout;
|
---|
1458 | vbox->setLayout(vl);
|
---|
1459 |
|
---|
1460 |
|
---|
1461 |
|
---|
1462 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1463 | vbox->layout()->addWidget(slider);
|
---|
1464 | slider->show();
|
---|
1465 | slider->setRange(0, 1000);
|
---|
1466 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1467 | slider->setValue(1000);
|
---|
1468 |
|
---|
1469 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSceneCut(int)));
|
---|
1470 |
|
---|
1471 | cb = new QCheckBox("Render errors", vbox);
|
---|
1472 | vbox->layout()->addWidget(cb);
|
---|
1473 | cb->setChecked(false);
|
---|
1474 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderErrors(bool)));
|
---|
1475 |
|
---|
1476 | cb = new QCheckBox("Use filter", vbox);
|
---|
1477 | vbox->layout()->addWidget(cb);
|
---|
1478 | cb->setChecked(true);
|
---|
1479 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetUseFilter(bool)));
|
---|
1480 |
|
---|
1481 | cb = new QCheckBox("Use spatial filter", vbox);
|
---|
1482 | vbox->layout()->addWidget(cb);
|
---|
1483 | cb->setChecked(true);
|
---|
1484 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetUseSpatialFilter(bool)));
|
---|
1485 |
|
---|
1486 | cb = new QCheckBox("Render filter", vbox);
|
---|
1487 | vbox->layout()->addWidget(cb);
|
---|
1488 | cb->setChecked(true);
|
---|
1489 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderFilter(bool)));
|
---|
1490 |
|
---|
1491 |
|
---|
1492 | cb = new QCheckBox("Cut view cells", vbox);
|
---|
1493 | vbox->layout()->addWidget(cb);
|
---|
1494 | cb->setChecked(false);
|
---|
1495 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutViewCells(bool)));
|
---|
1496 |
|
---|
1497 | cb = new QCheckBox("Cut scene", vbox);
|
---|
1498 | vbox->layout()->addWidget(cb);
|
---|
1499 | cb->setChecked(false);
|
---|
1500 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutScene(bool)));
|
---|
1501 |
|
---|
1502 |
|
---|
1503 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1504 | vbox->layout()->addWidget(slider);
|
---|
1505 | slider->show();
|
---|
1506 | slider->setRange(1, 1000);
|
---|
1507 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1508 | slider->setValue(500);
|
---|
1509 |
|
---|
1510 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTopDistance(int)));
|
---|
1511 |
|
---|
1512 | cb = new QCheckBox("Top View", vbox);
|
---|
1513 | vbox->layout()->addWidget(cb);
|
---|
1514 | cb->setChecked(false);
|
---|
1515 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetTopView(bool)));
|
---|
1516 |
|
---|
1517 | vbox = new QGroupBox("PVS Errors", this);
|
---|
1518 | layout()->addWidget(vbox);
|
---|
1519 |
|
---|
1520 | vl = new QVBoxLayout;
|
---|
1521 | vbox->setLayout(vl);
|
---|
1522 |
|
---|
1523 | mPvsErrorWidget = new QListWidget(vbox);
|
---|
1524 | vbox->layout()->addWidget(mPvsErrorWidget);
|
---|
1525 |
|
---|
1526 | connect(mPvsErrorWidget,
|
---|
1527 | SIGNAL(doubleClicked(const QModelIndex &)),
|
---|
1528 | this,
|
---|
1529 | SLOT(PvsErrorClicked(const QModelIndex &)));
|
---|
1530 |
|
---|
1531 | QPushButton *button = new QPushButton("Next Error Frame", vbox);
|
---|
1532 | vbox->layout()->addWidget(button);
|
---|
1533 | connect(button, SIGNAL(clicked(void)), SLOT(FocusNextPvsErrorFrame(void)));
|
---|
1534 |
|
---|
1535 | setWindowTitle("Preprocessor Control Widget");
|
---|
1536 | adjustSize();
|
---|
1537 | }
|
---|
1538 |
|
---|
1539 |
|
---|
1540 |
|
---|
1541 | void
|
---|
1542 | RendererControlWidget::FocusNextPvsErrorFrame(void)
|
---|
1543 | {
|
---|
1544 |
|
---|
1545 |
|
---|
1546 | }
|
---|
1547 |
|
---|
1548 | void
|
---|
1549 | RendererControlWidget::UpdatePvsErrorItem(int row,
|
---|
1550 | GlRendererBuffer::PvsErrorEntry &pvsErrorEntry)
|
---|
1551 | {
|
---|
1552 |
|
---|
1553 | QListWidgetItem *i = mPvsErrorWidget->item(row);
|
---|
1554 | QString s;
|
---|
1555 | s.sprintf("%5.5f", pvsErrorEntry.mError);
|
---|
1556 | if (i) {
|
---|
1557 | i->setText(s);
|
---|
1558 | } else {
|
---|
1559 | new QListWidgetItem(s, mPvsErrorWidget);
|
---|
1560 | }
|
---|
1561 | mPvsErrorWidget->update();
|
---|
1562 | }
|
---|
1563 |
|
---|
1564 | GlRendererWidget::GlRendererWidget(SceneGraph *sceneGraph,
|
---|
1565 | ViewCellsManager *viewcells,
|
---|
1566 | KdTree *tree,
|
---|
1567 | QWidget * parent,
|
---|
1568 | const QGLWidget * shareWidget,
|
---|
1569 | Qt::WFlags f
|
---|
1570 | )
|
---|
1571 | :
|
---|
1572 | GlRenderer(sceneGraph, viewcells, tree), QGLWidget(parent, shareWidget, f)
|
---|
1573 | {
|
---|
1574 | mTopView = false;
|
---|
1575 | mRenderViewCells = false;
|
---|
1576 | mTopDistance = 1.0f;
|
---|
1577 | mCutViewCells = false;
|
---|
1578 | mCutScene = false;
|
---|
1579 | mRenderErrors = false;
|
---|
1580 | mRenderFilter = true;
|
---|
1581 | mUseFilter = true;
|
---|
1582 | mUseSpatialFilter = true;
|
---|
1583 | mShowRenderCost = false;
|
---|
1584 | mShowPvsSizes = false;
|
---|
1585 | mSpatialFilterSize = 0.01;
|
---|
1586 | mPvsSize = 0;
|
---|
1587 | mRenderError = 0.0f;
|
---|
1588 | mControlWidget = new RendererControlWidget(NULL);
|
---|
1589 |
|
---|
1590 | connect(mControlWidget, SIGNAL(SetViewCellGranularity(int)), this, SLOT(SetViewCellGranularity(int)));
|
---|
1591 | connect(mControlWidget, SIGNAL(SetSceneCut(int)), this, SLOT(SetSceneCut(int)));
|
---|
1592 | connect(mControlWidget, SIGNAL(SetTopDistance(int)), this, SLOT(SetTopDistance(int)));
|
---|
1593 |
|
---|
1594 | connect(mControlWidget, SIGNAL(SetVisibilityFilterSize(int)), this, SLOT(SetVisibilityFilterSize(int)));
|
---|
1595 | connect(mControlWidget, SIGNAL(SetSpatialFilterSize(int)), this, SLOT(SetSpatialFilterSize(int)));
|
---|
1596 |
|
---|
1597 | connect(mControlWidget, SIGNAL(SetShowViewCells(bool)), this, SLOT(SetShowViewCells(bool)));
|
---|
1598 | connect(mControlWidget, SIGNAL(SetShowRenderCost(bool)), this, SLOT(SetShowRenderCost(bool)));
|
---|
1599 | connect(mControlWidget, SIGNAL(SetShowPvsSizes(bool)), this, SLOT(SetShowPvsSizes(bool)));
|
---|
1600 | connect(mControlWidget, SIGNAL(SetTopView(bool)), this, SLOT(SetTopView(bool)));
|
---|
1601 | connect(mControlWidget, SIGNAL(SetCutViewCells(bool)), this, SLOT(SetCutViewCells(bool)));
|
---|
1602 | connect(mControlWidget, SIGNAL(SetCutScene(bool)), this, SLOT(SetCutScene(bool)));
|
---|
1603 | connect(mControlWidget, SIGNAL(SetRenderErrors(bool)), this, SLOT(SetRenderErrors(bool)));
|
---|
1604 | connect(mControlWidget, SIGNAL(SetRenderFilter(bool)), this, SLOT(SetRenderFilter(bool)));
|
---|
1605 | connect(mControlWidget, SIGNAL(SetUseFilter(bool)), this, SLOT(SetUseFilter(bool)));
|
---|
1606 | connect(mControlWidget, SIGNAL(SetUseSpatialFilter(bool)),
|
---|
1607 | this, SLOT(SetUseSpatialFilter(bool)));
|
---|
1608 |
|
---|
1609 |
|
---|
1610 | mControlWidget->show();
|
---|
1611 | }
|
---|
1612 |
|
---|
1613 | void
|
---|
1614 | GlRendererWidget::SetViewCellGranularity(int number)
|
---|
1615 | {
|
---|
1616 | if (mViewCellsManager)
|
---|
1617 | // mViewCellsManager->SetMaxFilterSize(number);
|
---|
1618 | mViewCellsManager->CollectViewCells(number);
|
---|
1619 |
|
---|
1620 | updateGL();
|
---|
1621 | }
|
---|
1622 |
|
---|
1623 | void
|
---|
1624 | GlRendererWidget::SetVisibilityFilterSize(int number)
|
---|
1625 | {
|
---|
1626 | if (mViewCellsManager)
|
---|
1627 | mViewCellsManager->SetMaxFilterSize(number);
|
---|
1628 | updateGL();
|
---|
1629 | }
|
---|
1630 |
|
---|
1631 | void
|
---|
1632 | GlRendererWidget::SetSpatialFilterSize(int number)
|
---|
1633 | {
|
---|
1634 | mSpatialFilterSize = 1e-3*number;
|
---|
1635 | updateGL();
|
---|
1636 | }
|
---|
1637 |
|
---|
1638 | void
|
---|
1639 | GlRendererWidget::SetSceneCut(int number)
|
---|
1640 | {
|
---|
1641 | // assume the cut plane can only be aligned with xz plane
|
---|
1642 | // shift it along y according to number, which is percentage of the bounding
|
---|
1643 | // box position
|
---|
1644 | if (mViewCellsManager) {
|
---|
1645 | AxisAlignedBox3 box = mViewCellsManager->GetViewSpaceBox();
|
---|
1646 | Vector3 p = box.Min() + (number/1000.0f)*box.Max();
|
---|
1647 | mSceneCutPlane.mNormal = Vector3(0,-1,0);
|
---|
1648 | mSceneCutPlane.mD = -DotProd(mSceneCutPlane.mNormal, p);
|
---|
1649 | updateGL();
|
---|
1650 | }
|
---|
1651 | }
|
---|
1652 |
|
---|
1653 | void
|
---|
1654 | GlRendererWidget::SetTopDistance(int number)
|
---|
1655 | {
|
---|
1656 | mTopDistance = number/1000.0f;
|
---|
1657 | updateGL();
|
---|
1658 | }
|
---|
1659 |
|
---|
1660 | void
|
---|
1661 | GlRendererWidget::RenderViewCells()
|
---|
1662 | {
|
---|
1663 | mUseFalseColors = true;
|
---|
1664 |
|
---|
1665 | SetupCamera();
|
---|
1666 | glEnable(GL_CULL_FACE);
|
---|
1667 | //glDisable(GL_CULL_FACE);
|
---|
1668 | glCullFace(GL_FRONT);
|
---|
1669 | double eq[4];
|
---|
1670 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
1671 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
1672 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
1673 | eq[3] = mSceneCutPlane.mD;
|
---|
1674 |
|
---|
1675 | if (mCutViewCells) {
|
---|
1676 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
1677 | glEnable(GL_CLIP_PLANE0);
|
---|
1678 | }
|
---|
1679 |
|
---|
1680 | int i;
|
---|
1681 | ViewCellContainer &viewcells = mViewCellsManager->GetViewCells();
|
---|
1682 | int maxPvs = -1;
|
---|
1683 | for (i=0; i < viewcells.size(); i++) {
|
---|
1684 | ViewCell *vc = viewcells[i];
|
---|
1685 | int p = vc->GetPvs().GetSize();
|
---|
1686 | if (p > maxPvs)
|
---|
1687 | maxPvs = p;
|
---|
1688 | }
|
---|
1689 |
|
---|
1690 |
|
---|
1691 | for (i=0; i < viewcells.size(); i++) {
|
---|
1692 | ViewCell *vc = viewcells[i];
|
---|
1693 | // Mesh *m = vc->GetMesh();
|
---|
1694 |
|
---|
1695 |
|
---|
1696 | RgbColor c;
|
---|
1697 |
|
---|
1698 | if (!mShowPvsSizes)
|
---|
1699 | c = vc->GetColor();
|
---|
1700 | else {
|
---|
1701 | float importance = (float)vc->GetPvs().GetSize() / (float)maxPvs;
|
---|
1702 | c = RgbColor(importance, 1.0f - importance, 0.0f);
|
---|
1703 | }
|
---|
1704 | glColor3f(c.r, c.g, c.b);
|
---|
1705 |
|
---|
1706 | RenderViewCell(vc);
|
---|
1707 | }
|
---|
1708 |
|
---|
1709 | glDisable(GL_CLIP_PLANE0);
|
---|
1710 |
|
---|
1711 | }
|
---|
1712 |
|
---|
1713 | void GlRendererBuffer::SampleBeamContributions(Intersectable *sourceObject,
|
---|
1714 | Beam &beam,
|
---|
1715 | const int desiredSamples,
|
---|
1716 | BeamSampleStatistics &stat)
|
---|
1717 | {
|
---|
1718 | // TODO: should be moved out of here (not to be done every time)
|
---|
1719 | // only back faces are interesting for the depth pass
|
---|
1720 | glShadeModel(GL_FLAT);
|
---|
1721 | glDisable(GL_LIGHTING);
|
---|
1722 |
|
---|
1723 | // needed to kill the fragments for the front buffer
|
---|
1724 | glEnable(GL_ALPHA_TEST);
|
---|
1725 | glAlphaFunc(GL_GREATER, 0);
|
---|
1726 |
|
---|
1727 | // assumes that the beam is constructed and contains kd-tree nodes
|
---|
1728 | // and viewcells which it intersects
|
---|
1729 |
|
---|
1730 |
|
---|
1731 | // Get the number of viewpoints to be sampled
|
---|
1732 | // Now it is a sqrt but in general a wiser decision could be made.
|
---|
1733 | // The less viewpoints the better for rendering performance, since less passes
|
---|
1734 | // over the beam is needed.
|
---|
1735 | // The viewpoints could actually be generated outside of the bounding box which
|
---|
1736 | // would distribute the 'efective viewpoints' of the object surface and thus
|
---|
1737 | // with a few viewpoints better sample the viewpoint space....
|
---|
1738 |
|
---|
1739 | //TODO: comment in
|
---|
1740 | //int viewPointSamples = sqrt((float)desiredSamples);
|
---|
1741 | int viewPointSamples = max(desiredSamples / (GetWidth() * GetHeight()), 1);
|
---|
1742 |
|
---|
1743 | // the number of direction samples per pass is given by the number of viewpoints
|
---|
1744 | int directionalSamples = desiredSamples / viewPointSamples;
|
---|
1745 |
|
---|
1746 | Debug << "directional samples: " << directionalSamples << endl;
|
---|
1747 | for (int i = 0; i < viewPointSamples; ++ i)
|
---|
1748 | {
|
---|
1749 | Vector3 viewPoint = beam.mBox.GetRandomPoint();
|
---|
1750 |
|
---|
1751 | // perhaps the viewpoint should be shifted back a little bit so that it always lies
|
---|
1752 | // inside the source object
|
---|
1753 | // 'ideally' the viewpoints would be distributed on the soureObject surface, but this
|
---|
1754 | // would require more complicated sampling (perhaps hierarchical rejection sampling of
|
---|
1755 | // the object surface is an option here - only the mesh faces which are inside the box
|
---|
1756 | // are considered as candidates)
|
---|
1757 |
|
---|
1758 | SampleViewpointContributions(sourceObject,
|
---|
1759 | viewPoint,
|
---|
1760 | beam,
|
---|
1761 | directionalSamples,
|
---|
1762 | stat);
|
---|
1763 | }
|
---|
1764 |
|
---|
1765 |
|
---|
1766 | // note:
|
---|
1767 | // this routine would be called only if the number of desired samples is sufficiently
|
---|
1768 | // large - for other rss tree cells the cpu based sampling is perhaps more efficient
|
---|
1769 | // distributing the work between cpu and gpu would also allow us to place more sophisticated
|
---|
1770 | // sample distributions (silhouette ones) using the cpu and the jittered once on the GPU
|
---|
1771 | // in order that thios scheme is working well the gpu render buffer should run in a separate
|
---|
1772 | // thread than the cpu sampler, which would not be such a big problem....
|
---|
1773 |
|
---|
1774 | // disable alpha test again
|
---|
1775 | glDisable(GL_ALPHA_TEST);
|
---|
1776 | }
|
---|
1777 |
|
---|
1778 |
|
---|
1779 | void GlRendererBuffer::SampleViewpointContributions(Intersectable *sourceObject,
|
---|
1780 | const Vector3 viewPoint,
|
---|
1781 | Beam &beam,
|
---|
1782 | const int samples,
|
---|
1783 | BeamSampleStatistics &stat)
|
---|
1784 | {
|
---|
1785 | // 1. setup the view port to match the desired samples
|
---|
1786 | glViewport(0, 0, samples, samples);
|
---|
1787 |
|
---|
1788 | // 2. setup the projection matrix and view matrix to match the viewpoint + beam.mDirBox
|
---|
1789 | SetupProjectionForViewPoint(viewPoint, beam, sourceObject);
|
---|
1790 |
|
---|
1791 |
|
---|
1792 | // 3. reset z-buffer to 0 and render the source object for the beam
|
---|
1793 | // with glCullFace(Enabled) and glFrontFace(GL_CW)
|
---|
1794 | // save result to the front depth map
|
---|
1795 | // the front depth map holds ray origins
|
---|
1796 |
|
---|
1797 |
|
---|
1798 | // front depth buffer must be initialised to 0
|
---|
1799 | float clearDepth;
|
---|
1800 |
|
---|
1801 | glGetFloatv(GL_DEPTH_CLEAR_VALUE, &clearDepth);
|
---|
1802 | glClearDepth(0.0f);
|
---|
1803 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
---|
1804 |
|
---|
1805 |
|
---|
1806 | //glFrontFace(GL_CW);
|
---|
1807 | glEnable(GL_CULL_FACE);
|
---|
1808 | glCullFace(GL_FRONT);
|
---|
1809 | glColorMask(0, 0, 0, 0);
|
---|
1810 |
|
---|
1811 |
|
---|
1812 | // stencil is increased where the source object is located
|
---|
1813 | glEnable(GL_STENCIL_TEST);
|
---|
1814 | glStencilFunc(GL_ALWAYS, 0x1, 0x1);
|
---|
1815 | glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
|
---|
1816 |
|
---|
1817 |
|
---|
1818 | #if 0
|
---|
1819 | static int glSourceObjList = -1;
|
---|
1820 | if (glSourceObjList != -1)
|
---|
1821 | {
|
---|
1822 | glSourceObjList = glGenLists(1);
|
---|
1823 | glNewList(glSourceObjList, GL_COMPILE);
|
---|
1824 |
|
---|
1825 | RenderIntersectable(sourceObject);
|
---|
1826 |
|
---|
1827 | glEndList();
|
---|
1828 | }
|
---|
1829 | glCallList(glSourceObjList);
|
---|
1830 |
|
---|
1831 | #else
|
---|
1832 | RenderIntersectable(sourceObject);
|
---|
1833 |
|
---|
1834 | #endif
|
---|
1835 |
|
---|
1836 | // copy contents of the front depth buffer into depth texture
|
---|
1837 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
1838 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1839 |
|
---|
1840 |
|
---|
1841 | // reset clear function
|
---|
1842 | glClearDepth(clearDepth);
|
---|
1843 |
|
---|
1844 |
|
---|
1845 |
|
---|
1846 | // 4. set up the termination depth buffer (= standard depth buffer)
|
---|
1847 | // only rays which have non-zero entry in the origin buffer are valid since
|
---|
1848 | // they realy start on the object surface (this is tagged by setting a
|
---|
1849 | // stencil buffer bit at step 3).
|
---|
1850 |
|
---|
1851 | glStencilFunc(GL_EQUAL, 0x1, 0x1);
|
---|
1852 | glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
|
---|
1853 |
|
---|
1854 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1855 | glDepthMask(1);
|
---|
1856 |
|
---|
1857 | glEnable(GL_DEPTH_TEST);
|
---|
1858 |
|
---|
1859 | glEnable(GL_CULL_FACE);
|
---|
1860 | glCullFace(GL_BACK);
|
---|
1861 |
|
---|
1862 | // setup front depth buffer
|
---|
1863 | glEnable(GL_TEXTURE_2D);
|
---|
1864 |
|
---|
1865 | // bind pixel shader implementing the front depth buffer functionality
|
---|
1866 | cgGLBindProgram(sCgFragmentProgram);
|
---|
1867 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
1868 |
|
---|
1869 |
|
---|
1870 | // 5. render all objects inside the beam
|
---|
1871 | // we can use id based false color to read them back for gaining the pvs
|
---|
1872 |
|
---|
1873 | glColorMask(1, 1, 1, 1);
|
---|
1874 |
|
---|
1875 |
|
---|
1876 | // if objects not stored in beam => extract objects
|
---|
1877 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
1878 | {
|
---|
1879 | vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
1880 |
|
---|
1881 | Intersectable::NewMail();
|
---|
1882 | for (it = beam.mKdNodes.begin(); it != it_end; ++ it)
|
---|
1883 | {
|
---|
1884 | mKdTree->CollectObjects(*it, beam.mObjects);
|
---|
1885 | }
|
---|
1886 | }
|
---|
1887 |
|
---|
1888 |
|
---|
1889 | // (objects can be compiled to a gl list now so that subsequent rendering for
|
---|
1890 | // this beam is fast - the same hold for step 3)
|
---|
1891 | // Afterwards we have two depth buffers defining the ray origin and termination
|
---|
1892 |
|
---|
1893 |
|
---|
1894 | #if 0
|
---|
1895 | static int glObjList = -1;
|
---|
1896 | if (glObjList != -1)
|
---|
1897 | {
|
---|
1898 | glObjList = glGenLists(1);
|
---|
1899 | glNewList(glObjList, GL_COMPILE);
|
---|
1900 |
|
---|
1901 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1902 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1903 | {
|
---|
1904 | // render all objects except the source object
|
---|
1905 | if (*it != sourceObject)
|
---|
1906 | RenderIntersectable(*it);
|
---|
1907 | }
|
---|
1908 |
|
---|
1909 | glEndList();
|
---|
1910 | }
|
---|
1911 |
|
---|
1912 | glCallList(glObjList);
|
---|
1913 | #else
|
---|
1914 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1915 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1916 | {
|
---|
1917 | // render all objects except the source object
|
---|
1918 | if (*it != sourceObject)
|
---|
1919 | RenderIntersectable(*it);
|
---|
1920 | }
|
---|
1921 | #endif
|
---|
1922 |
|
---|
1923 |
|
---|
1924 |
|
---|
1925 | // 6. Use occlusion queries for all viewcell meshes associated with the beam ->
|
---|
1926 | // a fragment passes if the corresponding stencil fragment is set and its depth is
|
---|
1927 | // between origin and termination buffer
|
---|
1928 |
|
---|
1929 | // create new queries if necessary
|
---|
1930 | OcclusionQuery::GenQueries(sQueries, (int)beam.mViewCells.size());
|
---|
1931 |
|
---|
1932 | // check whether any backfacing polygon would pass the depth test?
|
---|
1933 | // matt: should check both back /front facing because of dual depth buffer
|
---|
1934 | // and danger of cutting the near plane with front facing polys.
|
---|
1935 |
|
---|
1936 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
1937 | glDepthMask(GL_FALSE);
|
---|
1938 | glDisable(GL_CULL_FACE);
|
---|
1939 |
|
---|
1940 |
|
---|
1941 | ViewCellContainer::const_iterator vit, vit_end = beam.mViewCells.end();
|
---|
1942 |
|
---|
1943 | int queryIdx = 0;
|
---|
1944 |
|
---|
1945 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1946 | {
|
---|
1947 | sQueries[queryIdx ++]->BeginQuery();
|
---|
1948 |
|
---|
1949 | RenderIntersectable(*vit);
|
---|
1950 |
|
---|
1951 | sQueries[queryIdx]->EndQuery();
|
---|
1952 |
|
---|
1953 | ++ queryIdx;
|
---|
1954 | }
|
---|
1955 |
|
---|
1956 |
|
---|
1957 |
|
---|
1958 | // at this point, if possible, go and do some other computation
|
---|
1959 |
|
---|
1960 |
|
---|
1961 |
|
---|
1962 | // 7. The number of visible pixels is the number of sample rays which see the source
|
---|
1963 | // object from the corresponding viewcell -> remember these values for later update
|
---|
1964 | // of the viewcell pvs - or update immediately?
|
---|
1965 |
|
---|
1966 | queryIdx = 0;
|
---|
1967 |
|
---|
1968 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1969 | {
|
---|
1970 | // fetch queries
|
---|
1971 | unsigned int pixelCount = sQueries[queryIdx ++]->GetQueryResult();
|
---|
1972 |
|
---|
1973 | if (pixelCount)
|
---|
1974 | Debug << "view cell " << (*vit)->GetId() << " visible pixels: " << pixelCount << endl;
|
---|
1975 | }
|
---|
1976 |
|
---|
1977 |
|
---|
1978 | // 8. Copmpute rendering statistics
|
---|
1979 | // In general it is not neccessary to remember to extract all the rays cast. I hope it
|
---|
1980 | // would be sufficient to gain only the intergral statistics about the new contributions
|
---|
1981 | // and so the rss tree would actually store no new rays (only the initial ones)
|
---|
1982 | // the subdivision of the tree would only be driven by the statistics (the glrender could
|
---|
1983 | // evaluate the contribution entropy for example)
|
---|
1984 | // However might be an option to extract/store only those the rays which made a contribution
|
---|
1985 | // (new viewcell has been discovered) or relative contribution greater than a threshold ...
|
---|
1986 |
|
---|
1987 | ObjectContainer pvsObj;
|
---|
1988 | stat.pvsSize = ComputePvs(beam.mObjects, pvsObj);
|
---|
1989 |
|
---|
1990 | // to gain ray source and termination
|
---|
1991 | // copy contents of ray termination buffer into depth texture
|
---|
1992 | // and compare with ray source buffer
|
---|
1993 | #if 0
|
---|
1994 | VssRayContainer rays;
|
---|
1995 |
|
---|
1996 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
1997 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1998 |
|
---|
1999 | ComputeRays(Intersectable *sourceObj, rays);
|
---|
2000 |
|
---|
2001 | #endif
|
---|
2002 |
|
---|
2003 |
|
---|
2004 |
|
---|
2005 | //-- cleanup
|
---|
2006 |
|
---|
2007 |
|
---|
2008 | // reset gl state
|
---|
2009 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
2010 | glDepthMask(GL_TRUE);
|
---|
2011 | glEnable(GL_CULL_FACE);
|
---|
2012 | glDisable(GL_STENCIL_TEST);
|
---|
2013 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
2014 | glDisable(GL_TEXTURE_2D);
|
---|
2015 |
|
---|
2016 | // remove objects from beam
|
---|
2017 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
2018 | beam.mObjects.clear();
|
---|
2019 | }
|
---|
2020 |
|
---|
2021 |
|
---|
2022 | void GlRendererBuffer::SetupProjectionForViewPoint(const Vector3 &viewPoint,
|
---|
2023 | const Beam &beam,
|
---|
2024 | Intersectable *sourceObject)
|
---|
2025 | {
|
---|
2026 | float left, right, bottom, top, znear, zfar;
|
---|
2027 |
|
---|
2028 | beam.ComputePerspectiveFrustum(left, right, bottom, top, znear, zfar,
|
---|
2029 | mSceneGraph->GetBox());
|
---|
2030 |
|
---|
2031 | //Debug << left << " " << right << " " << bottom << " " << top << " " << znear << " " << zfar << endl;
|
---|
2032 | glMatrixMode(GL_PROJECTION);
|
---|
2033 | glLoadIdentity();
|
---|
2034 | glFrustum(left, right, bottom, top, znear, zfar);
|
---|
2035 | //glFrustum(-1, 1, -1, 1, 1, 20000);
|
---|
2036 |
|
---|
2037 | const Vector3 center = viewPoint + beam.GetMainDirection() * (zfar - znear) * 0.3f;
|
---|
2038 | const Vector3 up =
|
---|
2039 | Normalize(CrossProd(beam.mPlanes[0].mNormal, beam.mPlanes[4].mNormal));
|
---|
2040 |
|
---|
2041 | #ifdef _DEBUG
|
---|
2042 | Debug << "view point: " << viewPoint << endl;
|
---|
2043 | Debug << "eye: " << center << endl;
|
---|
2044 | Debug << "up: " << up << endl;
|
---|
2045 | #endif
|
---|
2046 |
|
---|
2047 | glMatrixMode(GL_MODELVIEW);
|
---|
2048 | glLoadIdentity();
|
---|
2049 | gluLookAt(viewPoint.x, viewPoint.y, viewPoint.z,
|
---|
2050 | center.x, center.y, center.z,
|
---|
2051 | up.x, up.y, up.z);
|
---|
2052 | }
|
---|
2053 |
|
---|
2054 |
|
---|
2055 | void GlRendererBuffer::InitGL()
|
---|
2056 | {
|
---|
2057 | makeCurrent();
|
---|
2058 | GlRenderer::InitGL();
|
---|
2059 |
|
---|
2060 | #if 1
|
---|
2061 | // initialise dual depth buffer textures
|
---|
2062 | glGenTextures(1, &frontDepthMap);
|
---|
2063 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
2064 |
|
---|
2065 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
2066 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
2067 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
2068 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
2069 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
2070 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
2071 |
|
---|
2072 | glGenTextures(1, &backDepthMap);
|
---|
2073 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
2074 |
|
---|
2075 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
2076 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
2077 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
2078 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
2079 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
2080 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
2081 |
|
---|
2082 | // cg initialization
|
---|
2083 | cgSetErrorCallback(handleCgError);
|
---|
2084 | sCgContext = cgCreateContext();
|
---|
2085 |
|
---|
2086 | if (cgGLIsProfileSupported(CG_PROFILE_ARBFP1))
|
---|
2087 | sCgFragmentProfile = CG_PROFILE_ARBFP1;
|
---|
2088 | else
|
---|
2089 | {
|
---|
2090 | // try FP30
|
---|
2091 | if (cgGLIsProfileSupported(CG_PROFILE_FP30))
|
---|
2092 | sCgFragmentProfile = CG_PROFILE_FP30;
|
---|
2093 | else
|
---|
2094 | {
|
---|
2095 | Debug << "Neither arbfp1 or fp30 fragment profiles supported on this system" << endl;
|
---|
2096 | exit(1);
|
---|
2097 | }
|
---|
2098 | }
|
---|
2099 |
|
---|
2100 |
|
---|
2101 | sCgFragmentProgram = cgCreateProgramFromFile(sCgContext,
|
---|
2102 | CG_SOURCE, "../src/dual_depth.cg",
|
---|
2103 | sCgFragmentProfile,
|
---|
2104 | NULL,
|
---|
2105 | NULL);
|
---|
2106 |
|
---|
2107 | if (!cgIsProgramCompiled(sCgFragmentProgram))
|
---|
2108 | cgCompileProgram(sCgFragmentProgram);
|
---|
2109 |
|
---|
2110 | cgGLLoadProgram(sCgFragmentProgram);
|
---|
2111 | cgGLBindProgram(sCgFragmentProgram);
|
---|
2112 |
|
---|
2113 | Debug << "---- PROGRAM BEGIN ----\n" <<
|
---|
2114 | cgGetProgramString(sCgFragmentProgram, CG_COMPILED_PROGRAM) << "---- PROGRAM END ----\n";
|
---|
2115 |
|
---|
2116 | #endif
|
---|
2117 | doneCurrent();
|
---|
2118 | }
|
---|
2119 |
|
---|
2120 |
|
---|
2121 | void GlRendererBuffer::ComputeRays(Intersectable *sourceObj, VssRayContainer &rays)
|
---|
2122 | {
|
---|
2123 | for (int i = 0; i < depthMapSize * depthMapSize; ++ i)
|
---|
2124 | {
|
---|
2125 | //todo glGetTexImage()
|
---|
2126 | }
|
---|
2127 | }
|
---|
2128 |
|
---|
2129 |
|
---|
2130 |
|
---|
2131 | inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
2132 | {
|
---|
2133 | return obj1->mId < obj2->mId;
|
---|
2134 | }
|
---|
2135 |
|
---|
2136 |
|
---|
2137 | int GlRendererBuffer::ComputePvs(ObjectContainer &objects,
|
---|
2138 | ObjectContainer &pvs) const
|
---|
2139 | {
|
---|
2140 | int pvsSize = 0;
|
---|
2141 | QImage image = toImage();
|
---|
2142 | Intersectable::NewMail();
|
---|
2143 |
|
---|
2144 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
2145 |
|
---|
2146 | MeshInstance dummy(NULL);
|
---|
2147 |
|
---|
2148 | Intersectable *obj = NULL;
|
---|
2149 |
|
---|
2150 | for (int x = 0; x < image.width(); ++ x)
|
---|
2151 | {
|
---|
2152 | for (int y = 0; y < image.height(); ++ y)
|
---|
2153 | {
|
---|
2154 | QRgb pix = image.pixel(x, y);
|
---|
2155 | const int id = GetId(qRed(pix), qGreen(pix), qBlue(pix));
|
---|
2156 |
|
---|
2157 | dummy.SetId(id);
|
---|
2158 |
|
---|
2159 | ObjectContainer::iterator oit =
|
---|
2160 | lower_bound(objects.begin(), objects.end(), &dummy, ilt);
|
---|
2161 |
|
---|
2162 |
|
---|
2163 | if (//(oit != oit.end()) &&
|
---|
2164 | ((*oit)->GetId() == id) &&
|
---|
2165 | !obj->Mailed())
|
---|
2166 | {
|
---|
2167 | obj = *oit;
|
---|
2168 | obj->Mail();
|
---|
2169 | ++ pvsSize;
|
---|
2170 | pvs.push_back(obj);
|
---|
2171 | }
|
---|
2172 | }
|
---|
2173 | }
|
---|
2174 |
|
---|
2175 | return pvsSize;
|
---|
2176 | }
|
---|
2177 |
|
---|
2178 | /***********************************************************************/
|
---|
2179 | /* GlDebuggerWidget implementation */
|
---|
2180 | /***********************************************************************/
|
---|
2181 |
|
---|
2182 |
|
---|
2183 | GlDebuggerWidget::GlDebuggerWidget(GlRendererBuffer *buf, QWidget *parent)
|
---|
2184 | : QGLWidget(QGLFormat(QGL::SampleBuffers), parent), mRenderBuffer(buf)
|
---|
2185 | {
|
---|
2186 | // create the pbuffer
|
---|
2187 | //pbuffer = new QGLPixelBuffer(QSize(512, 512), format(), this);
|
---|
2188 | timerId = startTimer(20);
|
---|
2189 | setWindowTitle(("OpenGL pbuffers"));
|
---|
2190 | }
|
---|
2191 |
|
---|
2192 |
|
---|
2193 | GlDebuggerWidget::~GlDebuggerWidget()
|
---|
2194 | {
|
---|
2195 | mRenderBuffer->releaseFromDynamicTexture();
|
---|
2196 | glDeleteTextures(1, &dynamicTexture);
|
---|
2197 |
|
---|
2198 | DEL_PTR(mRenderBuffer);
|
---|
2199 | }
|
---|
2200 |
|
---|
2201 |
|
---|
2202 | void GlDebuggerWidget::initializeGL()
|
---|
2203 | {
|
---|
2204 | glMatrixMode(GL_PROJECTION);
|
---|
2205 | glLoadIdentity();
|
---|
2206 |
|
---|
2207 | glFrustum(-1, 1, -1, 1, 10, 100);
|
---|
2208 | glTranslatef(-0.5f, -0.5f, -0.5f);
|
---|
2209 | glTranslatef(0.0f, 0.0f, -15.0f);
|
---|
2210 | glMatrixMode(GL_MODELVIEW);
|
---|
2211 |
|
---|
2212 | glEnable(GL_CULL_FACE);
|
---|
2213 | initCommon();
|
---|
2214 | initPbuffer();
|
---|
2215 |
|
---|
2216 | }
|
---|
2217 |
|
---|
2218 |
|
---|
2219 | void GlDebuggerWidget::resizeGL(int w, int h)
|
---|
2220 | {
|
---|
2221 | glViewport(0, 0, w, h);
|
---|
2222 | }
|
---|
2223 |
|
---|
2224 |
|
---|
2225 | void GlDebuggerWidget::paintGL()
|
---|
2226 | {
|
---|
2227 | // draw a spinning cube into the pbuffer..
|
---|
2228 | mRenderBuffer->makeCurrent();
|
---|
2229 |
|
---|
2230 | BeamSampleStatistics stats;
|
---|
2231 | mRenderBuffer->SampleBeamContributions(mSourceObject, mBeam, mSamples, stats);
|
---|
2232 |
|
---|
2233 | glFlush();
|
---|
2234 |
|
---|
2235 | // rendering directly to a texture is not supported on X11, unfortunately
|
---|
2236 | mRenderBuffer->updateDynamicTexture(dynamicTexture);
|
---|
2237 |
|
---|
2238 | // and use the pbuffer contents as a texture when rendering the
|
---|
2239 | // background and the bouncing cubes
|
---|
2240 | makeCurrent();
|
---|
2241 | glBindTexture(GL_TEXTURE_2D, dynamicTexture);
|
---|
2242 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
2243 |
|
---|
2244 | // draw the background
|
---|
2245 | glMatrixMode(GL_MODELVIEW);
|
---|
2246 | glPushMatrix();
|
---|
2247 | glLoadIdentity();
|
---|
2248 | glMatrixMode(GL_PROJECTION);
|
---|
2249 | glPushMatrix();
|
---|
2250 | glLoadIdentity();
|
---|
2251 |
|
---|
2252 | glPopMatrix();
|
---|
2253 | glMatrixMode(GL_MODELVIEW);
|
---|
2254 | glPopMatrix();
|
---|
2255 | }
|
---|
2256 |
|
---|
2257 |
|
---|
2258 | void GlDebuggerWidget::initPbuffer()
|
---|
2259 | {
|
---|
2260 | // set up the pbuffer context
|
---|
2261 | mRenderBuffer->makeCurrent();
|
---|
2262 | /*mRenderBuffer->InitGL();
|
---|
2263 |
|
---|
2264 | glViewport(0, 0, mRenderBuffer->size().width(), mRenderBuffer->size().height());
|
---|
2265 | glMatrixMode(GL_PROJECTION);
|
---|
2266 | glLoadIdentity();
|
---|
2267 | glOrtho(-1, 1, -1, 1, -99, 99);
|
---|
2268 | glTranslatef(-0.5f, -0.5f, 0.0f);
|
---|
2269 | glMatrixMode(GL_MODELVIEW);
|
---|
2270 | glLoadIdentity();
|
---|
2271 |
|
---|
2272 | glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);*/
|
---|
2273 |
|
---|
2274 | // generate a texture that has the same size/format as the pbuffer
|
---|
2275 | dynamicTexture = mRenderBuffer->generateDynamicTexture();
|
---|
2276 |
|
---|
2277 | // bind the dynamic texture to the pbuffer - this is a no-op under X11
|
---|
2278 | mRenderBuffer->bindToDynamicTexture(dynamicTexture);
|
---|
2279 | makeCurrent();
|
---|
2280 | }
|
---|
2281 |
|
---|
2282 | void GlDebuggerWidget::initCommon()
|
---|
2283 | {
|
---|
2284 | glEnable(GL_TEXTURE_2D);
|
---|
2285 | glEnable(GL_DEPTH_TEST);
|
---|
2286 |
|
---|
2287 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
2288 | }
|
---|
2289 |
|
---|
2290 | }
|
---|