1 | #include "Mesh.h"
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2 | #include "GlRenderer.h"
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3 | #include "ViewCellsManager.h"
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4 | #include "SceneGraph.h"
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5 | #include "Pvs.h"
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6 | #include "Viewcell.h"
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7 | #include "Beam.h"
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8 | #include "KdTree.h"
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9 | #include "Environment.h"
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10 |
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11 | //#define GL_GLEXT_PROTOTYPES
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12 | #include <GL/glext.h>
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13 | #include <Cg/cg.h>
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14 | #include <Cg/cgGL.h>
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15 |
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16 | #include <QVBoxLayout>
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17 |
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18 | static CGcontext sCgContext = NULL;
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19 | static CGprogram sCgFragmentProgram = NULL;
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20 | static CGprofile sCgFragmentProfile;
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21 |
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22 | GLuint frontDepthMap;
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23 | GLuint backDepthMap;
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24 |
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25 | const int depthMapSize = 512;
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26 | static vector<int> sQueries;
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27 |
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28 | GlRendererWidget *rendererWidget = NULL;
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29 | GlDebuggerWidget *debuggerWidget = NULL;
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30 |
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31 |
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32 | #ifdef _WIN32
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33 | PFNGLGENOCCLUSIONQUERIESNVPROC glGenOcclusionQueriesNV;
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34 | PFNGLBEGINOCCLUSIONQUERYNVPROC glBeginOcclusionQueryNV;
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35 | PFNGLENDOCCLUSIONQUERYNVPROC glEndOcclusionQueryNV;
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36 | PFNGLGETOCCLUSIONQUERYUIVNVPROC glGetOcclusionQueryuivNV;
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37 |
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38 | //PFNGLGENQUERIESARBPROC glGenQueriesARB;
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39 | //PFNGLBEGINQUERYARBPROC glBeginQueryARB;
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40 | //PFNGLENDQUERYARBPROC glEndQueryARB;
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41 | //PFNGLGETQUERYUIVARBPROC glGetQueryuivARB;
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42 | #endif
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43 |
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44 | bool useFilter = false;
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45 |
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46 | GlRenderer::GlRenderer(SceneGraph *sceneGraph,
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47 | ViewCellsManager *viewCellsManager,
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48 | KdTree *tree):
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49 | Renderer(sceneGraph, viewCellsManager),
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50 | mKdTree(tree)
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51 | {
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52 | mSceneGraph->CollectObjects(&mObjects);
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53 | mViewPoint = mSceneGraph->GetBox().Center();
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54 | mViewDirection = Vector3(0,0,1);
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55 |
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56 | // timerId = startTimer(10);
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57 | // debug coords for atlanta
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58 | // mViewPoint = Vector3(3473, 6.778, -1699);
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59 | // mViewDirection = Vector3(-0.2432, 0, 0.97);
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60 |
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61 | mFrame = 0;
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62 | mWireFrame = false;
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63 | environment->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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64 | mSnapErrorFrames = true;
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65 | mSnapPrefix = "snap/";
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66 | mUseForcedColors = false;
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67 |
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68 | mUseGlLists = true;
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69 |
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70 | }
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71 |
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72 | GlRenderer::~GlRenderer()
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73 | {
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74 | cerr<<"gl renderer destructor..\n";
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75 | if (sCgFragmentProgram)
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76 | cgDestroyProgram(sCgFragmentProgram);
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77 | if (sCgContext)
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78 | cgDestroyContext(sCgContext);
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79 | cerr<<"done."<<endl;
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80 | }
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81 |
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82 |
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83 | static void handleCgError()
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84 | {
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85 | Debug << "Cg error: " << cgGetErrorString(cgGetError()) << endl;
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86 | exit(1);
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87 | }
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88 |
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89 | void
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90 | GlRenderer::RenderIntersectable(Intersectable *object)
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91 | {
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92 |
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93 | glPushAttrib(GL_CURRENT_BIT);
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94 | if (mUseFalseColors)
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95 | SetupFalseColor(object->mId);
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96 |
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97 |
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98 | switch (object->Type()) {
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99 | case Intersectable::MESH_INSTANCE:
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100 | RenderMeshInstance((MeshInstance *)object);
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101 | break;
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102 | case Intersectable::VIEW_CELL:
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103 | RenderViewCell(dynamic_cast<ViewCell *>(object));
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104 | break;
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105 | default:
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106 | cerr<<"Rendering this object not yet implemented\n";
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107 | break;
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108 | }
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109 |
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110 | glPopAttrib();
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111 | }
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112 |
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113 |
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114 | void
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115 | GlRenderer::RenderViewCell(ViewCell *vc)
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116 | {
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117 | if (vc->GetMesh()) {
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118 |
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119 | if (!mUseFalseColors) {
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120 | if (vc->GetValid())
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121 | glColor3f(0,1,0);
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122 | else
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123 | glColor3f(0,0,1);
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124 | }
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125 |
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126 | RenderMesh(vc->GetMesh());
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127 | } else {
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128 | // render viewcells in the subtree
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129 | if (!vc->IsLeaf()) {
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130 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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131 |
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132 | ViewCellContainer::iterator it = vci->mChildren.begin();
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133 | for (; it != vci->mChildren.end(); ++it) {
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134 | RenderViewCell(*it);
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135 | }
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136 | } else {
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137 | // cerr<<"Empty viewcell mesh\n";
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138 | }
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139 | }
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140 | }
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141 |
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142 |
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143 | void
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144 | GlRenderer::RenderMeshInstance(MeshInstance *mi)
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145 | {
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146 | RenderMesh(mi->GetMesh());
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147 | }
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148 |
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149 | void
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150 | GlRenderer::SetupFalseColor(const int id)
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151 | {
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152 | // swap bits of the color
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153 | glColor3ub(id&255, (id>>8)&255, (id>>16)&255);
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154 | }
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155 |
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156 |
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157 | int GlRenderer::GetId(int r, int g, int b) const
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158 | {
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159 | return r + (g << 8) + (b << 16);
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160 | }
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161 |
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162 | void
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163 | GlRenderer::SetupMaterial(Material *m)
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164 | {
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165 | if (m)
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166 | glColor3fv(&(m->mDiffuseColor.r));
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167 | }
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168 |
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169 | void
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170 | GlRenderer::RenderMesh(Mesh *mesh)
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171 | {
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172 | int i = 0;
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173 |
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174 | if (!mUseFalseColors && !mUseForcedColors)
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175 | SetupMaterial(mesh->mMaterial);
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176 |
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177 | for (i=0; i < mesh->mFaces.size(); i++) {
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178 | if (mWireFrame)
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179 | glBegin(GL_LINE_LOOP);
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180 | else
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181 | glBegin(GL_POLYGON);
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182 |
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183 | Face *face = mesh->mFaces[i];
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184 | for (int j = 0; j < face->mVertexIndices.size(); j++) {
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185 | glVertex3fv(&mesh->mVertices[face->mVertexIndices[j]].x);
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186 | }
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187 | glEnd();
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188 | }
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189 | }
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190 |
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191 | void
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192 | GlRenderer::InitGL()
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193 | {
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194 | glMatrixMode(GL_PROJECTION);
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195 | glLoadIdentity();
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196 |
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197 | glMatrixMode(GL_MODELVIEW);
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198 | glLoadIdentity();
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199 |
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200 | glEnable(GL_CULL_FACE);
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201 | glShadeModel(GL_FLAT);
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202 | glEnable(GL_DEPTH_TEST);
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203 | glEnable(GL_CULL_FACE);
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204 |
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205 | glGenOcclusionQueriesNV = (PFNGLGENOCCLUSIONQUERIESNVPROC)
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206 | wglGetProcAddress("glGenOcclusionQueriesNV");
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207 | glBeginOcclusionQueryNV = (PFNGLBEGINOCCLUSIONQUERYNVPROC)
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208 | wglGetProcAddress("glBeginOcclusionQueryNV");
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209 | glEndOcclusionQueryNV = (PFNGLENDOCCLUSIONQUERYNVPROC)
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210 | wglGetProcAddress("glEndOcclusionQueryNV");
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211 | glGetOcclusionQueryuivNV = (PFNGLGETOCCLUSIONQUERYUIVNVPROC)
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212 | wglGetProcAddress("glGetOcclusionQueryuivNV");
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213 |
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214 |
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215 | #if 0
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216 | glGenQueriesARB = (PFNGLGENDQUERIESARBPROC)
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217 | wglGetProcAddress("glGenQueriesARB");
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218 | glBeginQueryARB = (PFNGLBEGINQUERYARBPROC)
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219 | wglGetProcAddress("glBeginQueryARB");
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220 | glEndQueryARB = (PFNGLENDQUERYARBPROC)
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221 | wglGetProcAddress("glEndQueryARB");
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222 | glGetQueryuivARB = (PFNGLGETQUERYUIVARBPROC)
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223 | wglGetProcAddress("glGetQueryuivARB");
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224 |
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225 | #endif
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226 |
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227 |
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228 | #if 0
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229 | GLfloat mat_ambient[] = { 0.5, 0.5, 0.5, 1.0 };
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230 | /* mat_specular and mat_shininess are NOT default values */
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231 | GLfloat mat_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
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232 | GLfloat mat_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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233 | GLfloat mat_shininess[] = { 1.0 };
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234 |
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235 | GLfloat light_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
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236 | GLfloat light_diffuse[] = { 0.4, 0.4, 0.4, 1.0 };
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237 | GLfloat light_specular[] = { 0.3, 0.3, 0.3, 1.0 };
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238 |
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239 | GLfloat lmodel_ambient[] = { 0.3, 0.3, 0.3, 1.0 };
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240 |
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241 |
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242 | // default Material
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243 | glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
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244 | glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
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245 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
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246 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
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247 |
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248 | // a light
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249 | glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
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250 | glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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251 | glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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252 |
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253 | glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
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254 | glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
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255 | glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);
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256 |
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257 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
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258 |
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259 | glEnable(GL_LIGHTING);
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260 | glEnable(GL_LIGHT0);
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261 | glEnable(GL_LIGHT1);
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262 |
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263 |
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264 | // set position of the light
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265 | GLfloat infinite_light[] = { 1.0, 0.8, 1.0, 0.0 };
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266 | glLightfv (GL_LIGHT0, GL_POSITION, infinite_light);
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267 |
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268 | // set position of the light2
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269 | GLfloat infinite_light2[] = { -0.3, 1.5, 1.0, 0.0 };
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270 | glLightfv (GL_LIGHT1, GL_POSITION, infinite_light2);
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271 |
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272 | glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
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273 | // glColorMaterial( GL_FRONT_AND_BACK, GL_SPECULAR);
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274 | glEnable(GL_COLOR_MATERIAL);
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275 |
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276 | glShadeModel( GL_FLAT );
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277 |
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278 | glDepthFunc( GL_LESS );
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279 | glEnable( GL_DEPTH_TEST );
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280 | #endif
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281 |
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282 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
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283 |
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284 | glEnable( GL_NORMALIZE );
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285 |
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286 | glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
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287 | }
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288 |
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289 | void
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290 | GlRendererWidget::RenderInfo()
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291 | {
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292 | QString s;
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293 | int vc = 0;
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294 | if (mViewCellsManager)
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295 | vc = mViewCellsManager->GetViewCells().size();
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296 | int filter = 0;
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297 | if (mViewCellsManager)
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298 | filter = mViewCellsManager->GetMaxFilterSize();
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299 |
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300 | 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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301 | mFrame,
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302 | mViewPoint.x,
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303 | mViewPoint.y,
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304 | mViewPoint.z,
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305 | mViewDirection.x,
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306 | mViewDirection.y,
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307 | mViewDirection.z,
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308 | vc,
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309 |
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310 | filter,
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311 | mPvsSize,
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312 | mRenderError*100.0f
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313 | );
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314 |
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315 | glColor3f(0.0f,0.0f,0.0f);
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316 | renderText(0,20,s);
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317 |
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318 | if (mShowRenderCost) {
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319 | static vector<float> costFunction;
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320 | static float maxCost = -1;
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321 | if (costFunction.size()==0) {
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322 | ViewCellsTree *tree = mViewCellsManager->GetViewCellsTree();
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323 | if (tree) {
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324 | tree->GetCostFunction(costFunction);
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325 | maxCost = -1;
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326 | for (int i=0; i < costFunction.size(); i++) {
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327 | // cout<<i<<":"<<costFunction[i]<<" ";
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328 | if (costFunction[i] > maxCost)
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329 | maxCost = costFunction[i];
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330 | }
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331 | }
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332 | }
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333 |
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334 |
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335 | int currentPos = mViewCellsManager->GetViewCells().size();
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336 | float currentCost=-1;
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337 |
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338 | if (currentPos < costFunction.size())
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339 | currentCost = costFunction[currentPos];
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340 | #if 0
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341 | cout<<"costFunction.size()="<<costFunction.size()<<endl;
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342 | cout<<"CP="<<currentPos<<endl;
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343 | cout<<"MC="<<maxCost<<endl;
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344 | cout<<"CC="<<currentCost<<endl;
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345 | #endif
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346 | if (costFunction.size()) {
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347 | glDisable(GL_DEPTH_TEST);
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348 | // init ortographic projection
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349 | glMatrixMode(GL_PROJECTION);
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350 | glPushMatrix();
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351 |
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352 | glLoadIdentity();
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353 | gluOrtho2D(0, 1.0f, 0, 1.0f);
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354 |
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355 | glTranslatef(0.1f, 0.1f, 0.0f);
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356 | glScalef(0.8f, 0.8f, 1.0f);
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357 | glMatrixMode(GL_MODELVIEW);
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358 | glLoadIdentity();
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359 |
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360 | glColor3f(1.0f,0,0);
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361 | glBegin(GL_LINE_STRIP);
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362 | // glVertex3f(0,0,0);
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363 |
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364 | for (int i=0; i < costFunction.size(); i++) {
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365 | float x = i/(float)costFunction.size();
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366 | float y = costFunction[i]/(maxCost*0.5f);
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367 | glVertex3f(x,y,0.0f);
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368 | }
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369 | glEnd();
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370 |
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371 | glColor3f(1.0f,0,0);
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372 | glBegin(GL_LINES);
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373 | float x = currentPos/(float)costFunction.size();
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374 | glVertex3f(x,0.0,0.0f);
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375 | glVertex3f(x,1.0f,0.0f);
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376 | glEnd();
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377 |
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378 | glColor3f(0.0f,0,0);
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379 | // show a grid
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380 | glBegin(GL_LINE_LOOP);
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381 | glVertex3f(0,0,0.0f);
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382 | glVertex3f(1,0,0.0f);
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383 | glVertex3f(1,1,0.0f);
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384 | glVertex3f(0,1,0.0f);
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385 | glEnd();
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386 |
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387 | glBegin(GL_LINES);
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388 | for (int i=0; i < 50000 && i < costFunction.size(); i+=10000) {
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389 | float x = i/(float)costFunction.size();
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390 | glVertex3f(x,0.0,0.0f);
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391 | glVertex3f(x,1.0f,0.0f);
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392 | }
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393 |
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394 | for (int i=0; i < maxCost; i+=100) {
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395 | float y = i/(maxCost*0.5f);
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396 | glVertex3f(0,y,0.0f);
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397 | glVertex3f(1,y,0.0f);
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398 | }
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399 |
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400 | glEnd();
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401 |
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402 |
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403 | // restore the projection matrix
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404 | glMatrixMode(GL_PROJECTION);
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405 | glPopMatrix();
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406 | glMatrixMode(GL_MODELVIEW);
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407 | glEnable(GL_DEPTH_TEST);
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408 |
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409 | }
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410 | }
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411 | }
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412 |
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413 |
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414 | void
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415 | GlRenderer::SetupProjection(const int w, const int h, const float angle)
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416 | {
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417 | glViewport(0, 0, w, h);
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418 | glMatrixMode(GL_PROJECTION);
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419 | glLoadIdentity();
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420 | gluPerspective(angle, 1.0, 0.1, 2.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
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421 | glMatrixMode(GL_MODELVIEW);
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422 | }
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423 |
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424 | void
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425 | GlRenderer::SetupCamera()
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426 | {
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427 | Vector3 target = mViewPoint + mViewDirection;
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428 |
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429 | Vector3 up(0,1,0);
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430 |
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431 | if (abs(DotProd(mViewDirection, up)) > 0.99f)
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432 | up = Vector3(1, 0, 0);
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433 |
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434 | glLoadIdentity();
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435 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
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436 | target.x, target.y, target.z,
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437 | up.x, up.y, up.z);
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438 | }
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439 |
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440 |
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441 | void
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442 | GlRendererBuffer::EvalRenderCostSample(
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443 | RenderCostSample &sample
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444 | )
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445 | {
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446 | mViewCellsManager->GetViewPoint(mViewPoint);
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447 | cout<<mViewPoint<<endl;
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448 |
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449 | // take a render cost sample by rendering a cube
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450 | Vector3 directions[6];
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451 | directions[0] = Vector3(1,0,0);
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452 | directions[1] = Vector3(0,1,0);
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453 | directions[2] = Vector3(0,0,1);
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454 | directions[3] = Vector3(-1,0,0);
|
---|
455 | directions[4] = Vector3(0,-1,0);
|
---|
456 | directions[5] = Vector3(0,0,-1);
|
---|
457 |
|
---|
458 | sample.mVisibleObjects = 0;
|
---|
459 |
|
---|
460 | int i, j;
|
---|
461 |
|
---|
462 | // reset object visibility
|
---|
463 | for (i=0; i < mObjects.size(); i++) {
|
---|
464 | mObjects[i]->mCounter = 0;
|
---|
465 | }
|
---|
466 | mFrame++;
|
---|
467 | for (i=0; i < 6; i++) {
|
---|
468 | mViewDirection = directions[i];
|
---|
469 | SetupCamera();
|
---|
470 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
471 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
472 |
|
---|
473 | glDepthFunc( GL_LESS );
|
---|
474 |
|
---|
475 | mUseFalseColors = true;
|
---|
476 |
|
---|
477 | RenderScene();
|
---|
478 |
|
---|
479 | if (1) {
|
---|
480 | char filename[256];
|
---|
481 | sprintf(filename, "snap/frame-%04d-%d.png", mFrame, i);
|
---|
482 | QImage im = toImage();
|
---|
483 | im.save(filename, "PNG");
|
---|
484 | }
|
---|
485 |
|
---|
486 | bool useItemBuffer = false;
|
---|
487 |
|
---|
488 | if (useItemBuffer) {
|
---|
489 | // read back the texture
|
---|
490 | glReadPixels(0, 0,
|
---|
491 | GetWidth(), GetHeight(),
|
---|
492 | GL_RGBA,
|
---|
493 | GL_UNSIGNED_BYTE,
|
---|
494 | mPixelBuffer);
|
---|
495 |
|
---|
496 | int x, y;
|
---|
497 | unsigned int *p = mPixelBuffer;
|
---|
498 | for (y = 0; y < GetHeight(); y++)
|
---|
499 | for (x = 0; x < GetWidth(); x++, p++) {
|
---|
500 | unsigned int id = (*p) & 0xFFFFFF;
|
---|
501 | if (id != 0xFFFFFF)
|
---|
502 | mObjects[id]->mCounter++;
|
---|
503 | }
|
---|
504 |
|
---|
505 | } else {
|
---|
506 |
|
---|
507 | // glDepthFunc( GL_LEQUAL );
|
---|
508 | glDepthFunc( GL_LEQUAL );
|
---|
509 |
|
---|
510 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
511 | glDepthMask(GL_FALSE);
|
---|
512 |
|
---|
513 | // now issue queries for all objects
|
---|
514 | for (j = 0; j < mObjects.size(); j++) {
|
---|
515 | int q;
|
---|
516 | for (q = 0; j + q < mObjects.size() && q < mOcclusionQueries.size(); q++) {
|
---|
517 | glBeginOcclusionQueryNV(mOcclusionQueries[q]);
|
---|
518 | RenderIntersectable(mObjects[j+q]);
|
---|
519 | glEndOcclusionQueryNV();
|
---|
520 | }
|
---|
521 |
|
---|
522 |
|
---|
523 | // collect results of the queries
|
---|
524 | for (q = 0; j + q < mObjects.size() && q < mOcclusionQueries.size(); q++) {
|
---|
525 | unsigned int pixelCount;
|
---|
526 | // reenable other state
|
---|
527 |
|
---|
528 | #if 1
|
---|
529 | do {
|
---|
530 | glGetOcclusionQueryuivNV(mOcclusionQueries[q],
|
---|
531 | GL_PIXEL_COUNT_AVAILABLE_NV,
|
---|
532 | &pixelCount);
|
---|
533 | if (!pixelCount)
|
---|
534 | cout<<"W";
|
---|
535 | } while(!pixelCount);
|
---|
536 | #endif
|
---|
537 |
|
---|
538 | glGetOcclusionQueryuivNV(mOcclusionQueries[q],
|
---|
539 | GL_PIXEL_COUNT_NV,
|
---|
540 | &pixelCount);
|
---|
541 | // if (pixelCount)
|
---|
542 | // cout<<"q="<<mOcclusionQueries[q]<<" pc="<<pixelCount<<" ";
|
---|
543 | mObjects[j+q]->mCounter += pixelCount;
|
---|
544 | }
|
---|
545 | j += q;
|
---|
546 | }
|
---|
547 |
|
---|
548 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
549 | glDepthMask(GL_TRUE);
|
---|
550 | }
|
---|
551 |
|
---|
552 |
|
---|
553 | }
|
---|
554 | // now evaluate the statistics over that sample
|
---|
555 | // currently only the number of visible objects is taken into account
|
---|
556 | sample.Reset();
|
---|
557 | for (j = 0; j < mObjects.size(); j++) {
|
---|
558 | if (mObjects[j]->mCounter) {
|
---|
559 | sample.mVisibleObjects++;
|
---|
560 | sample.mVisiblePixels += mObjects[j]->mCounter;
|
---|
561 | }
|
---|
562 | }
|
---|
563 | cout<<"RS="<<sample.mVisibleObjects<<" ";
|
---|
564 | }
|
---|
565 |
|
---|
566 | void
|
---|
567 | GlRendererBuffer::SampleRenderCost(
|
---|
568 | const int n,
|
---|
569 | vector<RenderCostSample> &samples
|
---|
570 | )
|
---|
571 | {
|
---|
572 | makeCurrent();
|
---|
573 |
|
---|
574 | if (mPixelBuffer == NULL)
|
---|
575 | mPixelBuffer = new unsigned int[GetWidth()*GetHeight()];
|
---|
576 |
|
---|
577 | SetupProjection(GetHeight(), GetHeight(), 90.0f);
|
---|
578 |
|
---|
579 | samples.resize(n);
|
---|
580 | halton.Reset();
|
---|
581 |
|
---|
582 | int i;
|
---|
583 | int numQ = 500;
|
---|
584 |
|
---|
585 | if (mOcclusionQueries.size() < numQ) {
|
---|
586 | cout<<"allocating occ queries..."<<endl;
|
---|
587 |
|
---|
588 | numQ;
|
---|
589 | unsigned int *queries = new unsigned int[numQ];
|
---|
590 | for (i=0; i < numQ; i++)
|
---|
591 | queries[i] = 111;
|
---|
592 |
|
---|
593 | glGenOcclusionQueriesNV(numQ, queries);
|
---|
594 |
|
---|
595 | mOcclusionQueries.resize(numQ);
|
---|
596 |
|
---|
597 | for (i=0; i < numQ; i++)
|
---|
598 | mOcclusionQueries[i] = queries[i];
|
---|
599 |
|
---|
600 | delete queries;
|
---|
601 | }
|
---|
602 |
|
---|
603 | for (i=0; i < n; i++)
|
---|
604 | EvalRenderCostSample(
|
---|
605 | samples[i]
|
---|
606 | );
|
---|
607 |
|
---|
608 | doneCurrent();
|
---|
609 |
|
---|
610 | }
|
---|
611 |
|
---|
612 |
|
---|
613 | void
|
---|
614 | GlRendererBuffer::RandomViewPoint()
|
---|
615 | {
|
---|
616 |
|
---|
617 |
|
---|
618 | // do not use this function since it could return different viewpoints for
|
---|
619 | // different executions of the algorithm
|
---|
620 |
|
---|
621 | //mViewCellsManager->GetViewPoint(mViewPoint);
|
---|
622 |
|
---|
623 | while (1) {
|
---|
624 | Vector3 pVector = Vector3(halton.GetNumber(1),
|
---|
625 | halton.GetNumber(2),
|
---|
626 | halton.GetNumber(3));
|
---|
627 |
|
---|
628 | mViewPoint = mSceneGraph->GetBox().GetPoint(pVector);
|
---|
629 | ViewCell *v = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
630 | if (v && v->GetValid())
|
---|
631 | break;
|
---|
632 | // generate a new vector
|
---|
633 | halton.GenerateNext();
|
---|
634 | }
|
---|
635 |
|
---|
636 |
|
---|
637 | Vector3 dVector = Vector3(2*M_PI*halton.GetNumber(4),
|
---|
638 | M_PI*halton.GetNumber(5),
|
---|
639 | 0.0f);
|
---|
640 |
|
---|
641 | mViewDirection = Normalize(Vector3(sin(dVector.x),
|
---|
642 | // cos(dVector.y),
|
---|
643 | 0.0f,
|
---|
644 | cos(dVector.x)));
|
---|
645 | halton.GenerateNext();
|
---|
646 | }
|
---|
647 |
|
---|
648 |
|
---|
649 | GlRendererBuffer::GlRendererBuffer(const int w,
|
---|
650 | const int h,
|
---|
651 | SceneGraph *sceneGraph,
|
---|
652 | ViewCellsManager *viewcells,
|
---|
653 | KdTree *tree):
|
---|
654 | QGLPixelBuffer(QSize(w, h)), GlRenderer(sceneGraph, viewcells, tree) {
|
---|
655 |
|
---|
656 | environment->GetIntValue("Preprocessor.pvsRenderErrorSamples", mPvsStatFrames);
|
---|
657 | mPvsErrorBuffer.resize(mPvsStatFrames);
|
---|
658 | ClearErrorBuffer();
|
---|
659 |
|
---|
660 | mPixelBuffer = NULL;
|
---|
661 |
|
---|
662 | makeCurrent();
|
---|
663 | InitGL();
|
---|
664 | doneCurrent();
|
---|
665 |
|
---|
666 | }
|
---|
667 |
|
---|
668 | float
|
---|
669 | GlRendererBuffer::GetPixelError(int &pvsSize)
|
---|
670 | {
|
---|
671 | float pErrorPixels = -1.0f;
|
---|
672 |
|
---|
673 | glReadBuffer(GL_BACK);
|
---|
674 |
|
---|
675 | // mUseFalseColors = true;
|
---|
676 |
|
---|
677 | mUseFalseColors = false;
|
---|
678 |
|
---|
679 | static int query = -1;
|
---|
680 | unsigned int pixelCount;
|
---|
681 |
|
---|
682 | if (query == -1)
|
---|
683 | glGenOcclusionQueriesNV(1, (unsigned int *)&query);
|
---|
684 |
|
---|
685 | if (mDetectEmptyViewSpace) {
|
---|
686 | // now check whether any backfacing polygon would pass the depth test
|
---|
687 | SetupCamera();
|
---|
688 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
689 | glEnable( GL_CULL_FACE );
|
---|
690 |
|
---|
691 | RenderScene();
|
---|
692 |
|
---|
693 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
694 | glDepthMask(GL_FALSE);
|
---|
695 | glDisable( GL_CULL_FACE );
|
---|
696 |
|
---|
697 | glBeginOcclusionQueryNV(query);
|
---|
698 |
|
---|
699 | RenderScene();
|
---|
700 |
|
---|
701 | glEndOcclusionQueryNV();
|
---|
702 |
|
---|
703 | // at this point, if possible, go and do some other computation
|
---|
704 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
705 | glDepthMask(GL_TRUE);
|
---|
706 | glEnable( GL_CULL_FACE );
|
---|
707 |
|
---|
708 | // reenable other state
|
---|
709 | glGetOcclusionQueryuivNV(query,
|
---|
710 | GL_PIXEL_COUNT_NV,
|
---|
711 | &pixelCount);
|
---|
712 |
|
---|
713 | if (pixelCount > 0)
|
---|
714 | return -1.0f; // backfacing polygon found -> not a valid viewspace sample
|
---|
715 | } else
|
---|
716 | glDisable( GL_CULL_FACE );
|
---|
717 |
|
---|
718 |
|
---|
719 | ViewCell *viewcell = NULL;
|
---|
720 |
|
---|
721 | PrVs prvs;
|
---|
722 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
723 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
724 | viewcell = prvs.mViewCell;
|
---|
725 |
|
---|
726 | // ViewCell *viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
727 | pvsSize = 0;
|
---|
728 | if (viewcell) {
|
---|
729 | SetupCamera();
|
---|
730 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
731 |
|
---|
732 | glColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);
|
---|
733 |
|
---|
734 | // Render PVS
|
---|
735 | std::map<Intersectable *,
|
---|
736 | PvsData<Intersectable *>,
|
---|
737 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
738 |
|
---|
739 | pvsSize = viewcell->GetPvs().mEntries.size();
|
---|
740 |
|
---|
741 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
742 | Intersectable *object = (*it).first;
|
---|
743 | RenderIntersectable(object);
|
---|
744 | }
|
---|
745 |
|
---|
746 | // glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
747 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
748 | mUseFalseColors = true;
|
---|
749 |
|
---|
750 | glBeginOcclusionQueryNV(query);
|
---|
751 |
|
---|
752 | SetupCamera();
|
---|
753 |
|
---|
754 | RenderScene();
|
---|
755 |
|
---|
756 | glEndOcclusionQueryNV();
|
---|
757 |
|
---|
758 |
|
---|
759 | unsigned int pixelCount;
|
---|
760 | // reenable other state
|
---|
761 | glGetOcclusionQueryuivNV(query,
|
---|
762 | GL_PIXEL_COUNT_NV,
|
---|
763 | &pixelCount);
|
---|
764 |
|
---|
765 | pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());
|
---|
766 | if (mSnapErrorFrames && pErrorPixels > 0.01) {
|
---|
767 |
|
---|
768 | char filename[256];
|
---|
769 | sprintf(filename, "error-frame-%04d-%0.5f.png", mFrame, pErrorPixels);
|
---|
770 | QImage im = toImage();
|
---|
771 | im.save(mSnapPrefix + filename, "PNG");
|
---|
772 | if (1) { //0 && mFrame == 1543) {
|
---|
773 | int x,y;
|
---|
774 | int lastIndex = -1;
|
---|
775 | for (y=0; y < im.height(); y++)
|
---|
776 | for (x=0; x < im.width(); x++) {
|
---|
777 | QRgb p = im.pixel(x,y);
|
---|
778 | int index = qRed(p) + (qGreen(p)<<8) + (qBlue(p)<<16);
|
---|
779 | if (qGreen(p) != 255 && index!=0) {
|
---|
780 | if (index != lastIndex) {
|
---|
781 | Debug<<"ei="<<index<<" ";
|
---|
782 | lastIndex = index;
|
---|
783 | }
|
---|
784 | }
|
---|
785 | }
|
---|
786 | }
|
---|
787 |
|
---|
788 |
|
---|
789 | mUseFalseColors = false;
|
---|
790 | glPushAttrib(GL_CURRENT_BIT);
|
---|
791 | glColor3f(0,1,0);
|
---|
792 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
793 | SetupCamera();
|
---|
794 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
795 |
|
---|
796 | // Render PVS
|
---|
797 | std::map<Intersectable *,
|
---|
798 | PvsData<Intersectable *>,
|
---|
799 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
800 |
|
---|
801 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
802 | Intersectable *object = (*it).first;
|
---|
803 | RenderIntersectable(object);
|
---|
804 | }
|
---|
805 |
|
---|
806 | im = toImage();
|
---|
807 | sprintf(filename, "error-frame-%04d-%0.5f-pvs.png", mFrame, pErrorPixels);
|
---|
808 | im.save(mSnapPrefix + filename, "PNG");
|
---|
809 | glPopAttrib();
|
---|
810 | }
|
---|
811 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
812 | }
|
---|
813 |
|
---|
814 | if (viewcell)
|
---|
815 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
816 |
|
---|
817 | return pErrorPixels;
|
---|
818 | }
|
---|
819 |
|
---|
820 |
|
---|
821 | void
|
---|
822 | GlRendererWidget::SetupProjection(const int w, const int h)
|
---|
823 | {
|
---|
824 | if (!mTopView)
|
---|
825 | GlRenderer::SetupProjection(w, h);
|
---|
826 | else {
|
---|
827 | glViewport(0, 0, w, h);
|
---|
828 | glMatrixMode(GL_PROJECTION);
|
---|
829 | glLoadIdentity();
|
---|
830 | gluPerspective(50.0, 1.0, 0.1, 20.0*Magnitude(mSceneGraph->GetBox().Diagonal()));
|
---|
831 | glMatrixMode(GL_MODELVIEW);
|
---|
832 | }
|
---|
833 | }
|
---|
834 |
|
---|
835 | void
|
---|
836 | GlRendererWidget::RenderPvs()
|
---|
837 | {
|
---|
838 | SetupCamera();
|
---|
839 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
840 |
|
---|
841 | ViewCell *viewcell;
|
---|
842 |
|
---|
843 | PrVs prvs;
|
---|
844 |
|
---|
845 | if (!useFilter)
|
---|
846 | viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
847 | else {
|
---|
848 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
849 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
850 | viewcell = prvs.mViewCell;
|
---|
851 | }
|
---|
852 |
|
---|
853 | if (viewcell) {
|
---|
854 | ObjectPvs &pvs = viewcell->GetPvs();
|
---|
855 |
|
---|
856 | // read back the texture
|
---|
857 | std::map<Intersectable *,
|
---|
858 | PvsData<Intersectable *>,
|
---|
859 | LtSample<Intersectable *> >::const_iterator it = pvs.mEntries.begin();
|
---|
860 |
|
---|
861 | mPvsSize = pvs.mEntries.size();
|
---|
862 |
|
---|
863 | for (; it != pvs.mEntries.end(); ++ it) {
|
---|
864 | Intersectable *object = (*it).first;
|
---|
865 | float visibility = log10((*it).second.mSumPdf + 1)/5.0f;
|
---|
866 | glColor3f(visibility, 0.0f, 0.0f);
|
---|
867 | mUseForcedColors = true;
|
---|
868 | RenderIntersectable(object);
|
---|
869 | mUseForcedColors = false;
|
---|
870 | }
|
---|
871 |
|
---|
872 | if (mRenderFilter) {
|
---|
873 | mWireFrame = true;
|
---|
874 | RenderIntersectable(viewcell);
|
---|
875 | mWireFrame = false;
|
---|
876 | }
|
---|
877 |
|
---|
878 | if (useFilter)
|
---|
879 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
880 | } else {
|
---|
881 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
882 | for (; oi != mObjects.end(); oi++)
|
---|
883 | RenderIntersectable(*oi);
|
---|
884 | }
|
---|
885 | }
|
---|
886 |
|
---|
887 | float
|
---|
888 | GlRendererWidget::RenderErrors()
|
---|
889 | {
|
---|
890 | float pErrorPixels = -1.0f;
|
---|
891 |
|
---|
892 | glReadBuffer(GL_BACK);
|
---|
893 |
|
---|
894 | mUseFalseColors = true;
|
---|
895 |
|
---|
896 | SetupCamera();
|
---|
897 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
898 |
|
---|
899 | double eq[4];
|
---|
900 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
901 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
902 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
903 | eq[3] = mSceneCutPlane.mD;
|
---|
904 |
|
---|
905 | if (mCutScene) {
|
---|
906 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
907 | glEnable(GL_CLIP_PLANE0);
|
---|
908 | }
|
---|
909 |
|
---|
910 | if (mDetectEmptyViewSpace)
|
---|
911 | glEnable( GL_CULL_FACE );
|
---|
912 | else
|
---|
913 | glDisable( GL_CULL_FACE );
|
---|
914 |
|
---|
915 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
916 | for (; oi != mObjects.end(); oi++)
|
---|
917 | RenderIntersectable(*oi);
|
---|
918 |
|
---|
919 | ViewCell *viewcell;
|
---|
920 |
|
---|
921 | PrVs prvs;
|
---|
922 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
923 |
|
---|
924 |
|
---|
925 | if (!useFilter)
|
---|
926 | viewcell = mViewCellsManager->GetViewCell(mViewPoint);
|
---|
927 | else {
|
---|
928 | mViewCellsManager->GetPrVS(mViewPoint, prvs);
|
---|
929 | viewcell = prvs.mViewCell;
|
---|
930 | }
|
---|
931 |
|
---|
932 | QImage im1, im2;
|
---|
933 | QImage diff;
|
---|
934 |
|
---|
935 | if (viewcell) {
|
---|
936 | // read back the texture
|
---|
937 | im1 = grabFrameBuffer(true);
|
---|
938 |
|
---|
939 | SetupCamera();
|
---|
940 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
941 |
|
---|
942 | std::map<Intersectable *,
|
---|
943 | PvsData<Intersectable *>,
|
---|
944 | LtSample<Intersectable *> >::const_iterator it = viewcell->GetPvs().mEntries.begin();
|
---|
945 |
|
---|
946 | mPvsSize = viewcell->GetPvs().mEntries.size();
|
---|
947 |
|
---|
948 | for (; it != viewcell->GetPvs().mEntries.end(); ++ it) {
|
---|
949 | Intersectable *object = (*it).first;
|
---|
950 | RenderIntersectable(object);
|
---|
951 | }
|
---|
952 |
|
---|
953 | // read back the texture
|
---|
954 | im2 = grabFrameBuffer(true);
|
---|
955 |
|
---|
956 | diff = im1;
|
---|
957 | int x, y;
|
---|
958 | int errorPixels = 0;
|
---|
959 |
|
---|
960 | for (y = 0; y < im1.height(); y++)
|
---|
961 | for (x = 0; x < im1.width(); x++)
|
---|
962 | if (im1.pixel(x, y) == im2.pixel(x, y))
|
---|
963 | diff.setPixel(x, y, qRgba(0,0,0,0));
|
---|
964 | else {
|
---|
965 | diff.setPixel(x, y, qRgba(255,128,128,255));
|
---|
966 | errorPixels++;
|
---|
967 | }
|
---|
968 | pErrorPixels = ((float)errorPixels)/(im1.height()*im1.width());
|
---|
969 | }
|
---|
970 |
|
---|
971 | // now render the pvs again
|
---|
972 | SetupCamera();
|
---|
973 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
974 | mUseFalseColors = false;
|
---|
975 |
|
---|
976 | oi = mObjects.begin();
|
---|
977 | for (; oi != mObjects.end(); oi++)
|
---|
978 | RenderIntersectable(*oi);
|
---|
979 |
|
---|
980 | // now render im1
|
---|
981 | if (viewcell) {
|
---|
982 | if (0 && mTopView) {
|
---|
983 | mWireFrame = true;
|
---|
984 | RenderIntersectable(viewcell);
|
---|
985 | mWireFrame = false;
|
---|
986 | }
|
---|
987 |
|
---|
988 | // init ortographic projection
|
---|
989 | glMatrixMode(GL_PROJECTION);
|
---|
990 | glPushMatrix();
|
---|
991 |
|
---|
992 | glLoadIdentity();
|
---|
993 | gluOrtho2D(0, 1.0f, 0, 1.0f);
|
---|
994 |
|
---|
995 | glMatrixMode(GL_MODELVIEW);
|
---|
996 | glLoadIdentity();
|
---|
997 |
|
---|
998 | bindTexture(diff);
|
---|
999 |
|
---|
1000 | glPushAttrib(GL_ENABLE_BIT);
|
---|
1001 | glEnable( GL_ALPHA_TEST );
|
---|
1002 | glDisable( GL_CULL_FACE );
|
---|
1003 | glAlphaFunc( GL_GREATER, 0.5 );
|
---|
1004 |
|
---|
1005 | glEnable( GL_TEXTURE_2D );
|
---|
1006 | glBegin(GL_QUADS);
|
---|
1007 |
|
---|
1008 | glTexCoord2f(0,0);
|
---|
1009 | glVertex3f(0,0,0);
|
---|
1010 |
|
---|
1011 | glTexCoord2f(1,0);
|
---|
1012 | glVertex3f( 1, 0, 0);
|
---|
1013 |
|
---|
1014 | glTexCoord2f(1,1);
|
---|
1015 | glVertex3f( 1, 1, 0);
|
---|
1016 |
|
---|
1017 | glTexCoord2f(0,1);
|
---|
1018 | glVertex3f(0, 1, 0);
|
---|
1019 | glEnd();
|
---|
1020 |
|
---|
1021 | glPopAttrib();
|
---|
1022 |
|
---|
1023 | // restore the projection matrix
|
---|
1024 | glMatrixMode(GL_PROJECTION);
|
---|
1025 | glPopMatrix();
|
---|
1026 | glMatrixMode(GL_MODELVIEW);
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | glDisable(GL_CLIP_PLANE0);
|
---|
1030 |
|
---|
1031 | if (useFilter && viewcell)
|
---|
1032 | mViewCellsManager->DeleteLocalMergeTree(viewcell);
|
---|
1033 |
|
---|
1034 | mRenderError = pErrorPixels;
|
---|
1035 | return pErrorPixels;
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | void
|
---|
1039 | GlRenderer::_RenderScene()
|
---|
1040 | {
|
---|
1041 | ObjectContainer::const_iterator oi = mObjects.begin();
|
---|
1042 | for (; oi != mObjects.end(); oi++)
|
---|
1043 | RenderIntersectable(*oi);
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | bool
|
---|
1047 | GlRenderer::RenderScene()
|
---|
1048 | {
|
---|
1049 | static int glList = -1;
|
---|
1050 | if (mUseGlLists) {
|
---|
1051 | if (glList == -1) {
|
---|
1052 | glList = glGenLists(1);
|
---|
1053 | glNewList(glList, GL_COMPILE);
|
---|
1054 | _RenderScene();
|
---|
1055 | glEndList();
|
---|
1056 | }
|
---|
1057 | glCallList(glList);
|
---|
1058 | } else
|
---|
1059 | _RenderScene();
|
---|
1060 |
|
---|
1061 |
|
---|
1062 | return true;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 |
|
---|
1066 | void
|
---|
1067 | GlRendererBuffer::ClearErrorBuffer()
|
---|
1068 | {
|
---|
1069 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
1070 | mPvsErrorBuffer[i].mError = 1.0f;
|
---|
1071 | }
|
---|
1072 | }
|
---|
1073 |
|
---|
1074 |
|
---|
1075 | void
|
---|
1076 | GlRendererBuffer::EvalPvsStat()
|
---|
1077 | {
|
---|
1078 | mPvsStat.Reset();
|
---|
1079 | halton.Reset();
|
---|
1080 |
|
---|
1081 | makeCurrent();
|
---|
1082 | SetupProjection(GetWidth(), GetHeight());
|
---|
1083 |
|
---|
1084 | for (int i=0; i < mPvsStatFrames; i++) {
|
---|
1085 | float err;
|
---|
1086 | // set frame id for saving the error buffer
|
---|
1087 | mFrame = i;
|
---|
1088 | RandomViewPoint();
|
---|
1089 |
|
---|
1090 | // atlanta problematic frames: 325 525 691 1543
|
---|
1091 | #if 0
|
---|
1092 | if (mFrame != 325 &&
|
---|
1093 | mFrame != 525 &&
|
---|
1094 | mFrame != 691 &&
|
---|
1095 | mFrame != 1543)
|
---|
1096 | mPvsErrorBuffer[i] = -1;
|
---|
1097 | else {
|
---|
1098 | Debug<<"frame ="<<mFrame<<" vp="<<mViewPoint<<" vd="<<mViewDirection<<endl;
|
---|
1099 | }
|
---|
1100 | #endif
|
---|
1101 | if (mPvsErrorBuffer[i].mError > 0.0f) {
|
---|
1102 | int pvsSize;
|
---|
1103 | float error = GetPixelError(pvsSize);
|
---|
1104 | mPvsErrorBuffer[i].mError = error;
|
---|
1105 | mPvsErrorBuffer[i].mPvsSize = pvsSize;
|
---|
1106 |
|
---|
1107 | emit UpdatePvsErrorItem(i,
|
---|
1108 | mPvsErrorBuffer[i]);
|
---|
1109 |
|
---|
1110 | cout<<"("<<i<<","<<mPvsErrorBuffer[i].mError<<")";
|
---|
1111 | // swapBuffers();
|
---|
1112 | }
|
---|
1113 |
|
---|
1114 | err = mPvsErrorBuffer[i].mError;
|
---|
1115 |
|
---|
1116 | if (err >= 0.0f) {
|
---|
1117 | if (err > mPvsStat.maxError)
|
---|
1118 | mPvsStat.maxError = err;
|
---|
1119 | mPvsStat.sumError += err;
|
---|
1120 | mPvsStat.sumPvsSize += mPvsErrorBuffer[i].mPvsSize;
|
---|
1121 |
|
---|
1122 | if (err == 0.0f)
|
---|
1123 | mPvsStat.errorFreeFrames++;
|
---|
1124 | mPvsStat.frames++;
|
---|
1125 | }
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | glFinish();
|
---|
1129 | doneCurrent();
|
---|
1130 |
|
---|
1131 | cout<<endl<<flush;
|
---|
1132 | // mRenderingFinished.wakeAll();
|
---|
1133 | }
|
---|
1134 |
|
---|
1135 |
|
---|
1136 |
|
---|
1137 |
|
---|
1138 |
|
---|
1139 | void
|
---|
1140 | GlRendererWidget::mousePressEvent(QMouseEvent *e)
|
---|
1141 | {
|
---|
1142 | int x = e->pos().x();
|
---|
1143 | int y = e->pos().y();
|
---|
1144 |
|
---|
1145 | mousePoint.x = x;
|
---|
1146 | mousePoint.y = y;
|
---|
1147 |
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | void
|
---|
1151 | GlRendererWidget::mouseMoveEvent(QMouseEvent *e)
|
---|
1152 | {
|
---|
1153 | float MOVE_SENSITIVITY = Magnitude(mSceneGraph->GetBox().Diagonal())*1e-3;
|
---|
1154 | float TURN_SENSITIVITY=0.1f;
|
---|
1155 | float TILT_SENSITIVITY=32.0 ;
|
---|
1156 | float TURN_ANGLE= M_PI/36.0 ;
|
---|
1157 |
|
---|
1158 | int x = e->pos().x();
|
---|
1159 | int y = e->pos().y();
|
---|
1160 |
|
---|
1161 | if (e->modifiers() & Qt::ControlModifier) {
|
---|
1162 | mViewPoint.y += (y-mousePoint.y)*MOVE_SENSITIVITY/2.0;
|
---|
1163 | mViewPoint.x += (x-mousePoint.x)*MOVE_SENSITIVITY/2.0;
|
---|
1164 | } else {
|
---|
1165 | mViewPoint += mViewDirection*((mousePoint.y - y)*MOVE_SENSITIVITY);
|
---|
1166 | float adiff = TURN_ANGLE*(x - mousePoint.x)*-TURN_SENSITIVITY;
|
---|
1167 | float angle = atan2(mViewDirection.x, mViewDirection.z);
|
---|
1168 | mViewDirection.x = sin(angle+adiff);
|
---|
1169 | mViewDirection.z = cos(angle+adiff);
|
---|
1170 | }
|
---|
1171 |
|
---|
1172 | mousePoint.x = x;
|
---|
1173 | mousePoint.y = y;
|
---|
1174 |
|
---|
1175 | updateGL();
|
---|
1176 | }
|
---|
1177 |
|
---|
1178 | void
|
---|
1179 | GlRendererWidget::mouseReleaseEvent(QMouseEvent *)
|
---|
1180 | {
|
---|
1181 |
|
---|
1182 |
|
---|
1183 | }
|
---|
1184 |
|
---|
1185 | void
|
---|
1186 | GlRendererWidget::resizeGL(int w, int h)
|
---|
1187 | {
|
---|
1188 | SetupProjection(w, h);
|
---|
1189 | updateGL();
|
---|
1190 | }
|
---|
1191 |
|
---|
1192 | void
|
---|
1193 | GlRendererWidget::paintGL()
|
---|
1194 | {
|
---|
1195 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1196 |
|
---|
1197 |
|
---|
1198 | if (!mRenderViewCells) {
|
---|
1199 | if (mRenderErrors)
|
---|
1200 | RenderErrors();
|
---|
1201 | else
|
---|
1202 | RenderPvs();
|
---|
1203 | RenderInfo();
|
---|
1204 | } else {
|
---|
1205 | RenderViewCells();
|
---|
1206 |
|
---|
1207 | mWireFrame = true;
|
---|
1208 | RenderScene();
|
---|
1209 | mWireFrame = false;
|
---|
1210 |
|
---|
1211 | RenderInfo();
|
---|
1212 | }
|
---|
1213 |
|
---|
1214 | mFrame++;
|
---|
1215 | }
|
---|
1216 |
|
---|
1217 |
|
---|
1218 | void
|
---|
1219 | GlRendererWidget::SetupCamera()
|
---|
1220 | {
|
---|
1221 | if (!mTopView)
|
---|
1222 | GlRenderer::SetupCamera();
|
---|
1223 | else {
|
---|
1224 | if (0) {
|
---|
1225 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*0.05;
|
---|
1226 | Vector3 pos = mViewPoint - dist*Vector3(mViewDirection.x,
|
---|
1227 | -1,
|
---|
1228 | mViewDirection.y);
|
---|
1229 |
|
---|
1230 | Vector3 target = mViewPoint + dist*mViewDirection;
|
---|
1231 | Vector3 up(0,1,0);
|
---|
1232 |
|
---|
1233 | glLoadIdentity();
|
---|
1234 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1235 | target.x, target.y, target.z,
|
---|
1236 | up.x, up.y, up.z);
|
---|
1237 | } else {
|
---|
1238 | float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*mTopDistance;
|
---|
1239 | Vector3 pos = mViewPoint + dist*Vector3(0,
|
---|
1240 | 1,
|
---|
1241 | 0);
|
---|
1242 |
|
---|
1243 | Vector3 target = mViewPoint;
|
---|
1244 | Vector3 up(mViewDirection.x, 0, mViewDirection.z);
|
---|
1245 |
|
---|
1246 | glLoadIdentity();
|
---|
1247 | gluLookAt(pos.x, pos.y, pos.z,
|
---|
1248 | target.x, target.y, target.z,
|
---|
1249 | up.x, up.y, up.z);
|
---|
1250 |
|
---|
1251 | }
|
---|
1252 | }
|
---|
1253 |
|
---|
1254 | }
|
---|
1255 |
|
---|
1256 | void
|
---|
1257 | GlRendererWidget::keyPressEvent ( QKeyEvent * e )
|
---|
1258 | {
|
---|
1259 | switch (e->key()) {
|
---|
1260 | case Qt::Key_T:
|
---|
1261 | mTopView = !mTopView;
|
---|
1262 | SetupProjection(width(), height());
|
---|
1263 | updateGL();
|
---|
1264 | break;
|
---|
1265 | case Qt::Key_V:
|
---|
1266 | mRenderViewCells = !mRenderViewCells;
|
---|
1267 | updateGL();
|
---|
1268 | break;
|
---|
1269 | default:
|
---|
1270 | e->ignore();
|
---|
1271 | break;
|
---|
1272 | }
|
---|
1273 | }
|
---|
1274 |
|
---|
1275 |
|
---|
1276 | RendererControlWidget::RendererControlWidget(QWidget * parent, Qt::WFlags f):
|
---|
1277 | QWidget(parent, f)
|
---|
1278 | {
|
---|
1279 |
|
---|
1280 | QVBoxLayout *vl = new QVBoxLayout;
|
---|
1281 | setLayout(vl);
|
---|
1282 |
|
---|
1283 | QWidget *vbox = new QGroupBox("ViewCells", this);
|
---|
1284 | layout()->addWidget(vbox);
|
---|
1285 |
|
---|
1286 | vl = new QVBoxLayout;
|
---|
1287 | vbox->setLayout(vl);
|
---|
1288 |
|
---|
1289 | QLabel *label = new QLabel("Granularity");
|
---|
1290 | vbox->layout()->addWidget(label);
|
---|
1291 |
|
---|
1292 | QSlider *slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1293 | vl->addWidget(slider);
|
---|
1294 | slider->show();
|
---|
1295 | slider->setRange(1, 10000);
|
---|
1296 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1297 | slider->setValue(200);
|
---|
1298 |
|
---|
1299 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetViewCellGranularity(int)));
|
---|
1300 |
|
---|
1301 | label = new QLabel("Filter size");
|
---|
1302 | vbox->layout()->addWidget(label);
|
---|
1303 |
|
---|
1304 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1305 | vbox->layout()->addWidget(slider);
|
---|
1306 | slider->show();
|
---|
1307 | slider->setRange(1, 100);
|
---|
1308 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1309 | slider->setValue(3);
|
---|
1310 |
|
---|
1311 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetVisibilityFilterSize(int)));
|
---|
1312 |
|
---|
1313 |
|
---|
1314 |
|
---|
1315 | QWidget *hbox = new QWidget(vbox);
|
---|
1316 | vl->addWidget(hbox);
|
---|
1317 | QHBoxLayout *hlayout = new QHBoxLayout;
|
---|
1318 | hbox->setLayout(hlayout);
|
---|
1319 |
|
---|
1320 | QCheckBox *cb = new QCheckBox("Show viewcells", hbox);
|
---|
1321 | hlayout->addWidget(cb);
|
---|
1322 | cb->setChecked(false);
|
---|
1323 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowViewCells(bool)));
|
---|
1324 |
|
---|
1325 | cb = new QCheckBox("Show render cost", hbox);
|
---|
1326 | hlayout->addWidget(cb);
|
---|
1327 | cb->setChecked(false);
|
---|
1328 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowRenderCost(bool)));
|
---|
1329 |
|
---|
1330 | cb = new QCheckBox("Show pvs sizes", hbox);
|
---|
1331 | hlayout->addWidget(cb);
|
---|
1332 | cb->setChecked(false);
|
---|
1333 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowPvsSizes(bool)));
|
---|
1334 |
|
---|
1335 | vbox->resize(800,100);
|
---|
1336 |
|
---|
1337 |
|
---|
1338 | vbox = new QGroupBox("Rendering", this);
|
---|
1339 | layout()->addWidget(vbox);
|
---|
1340 |
|
---|
1341 | vl = new QVBoxLayout;
|
---|
1342 | vbox->setLayout(vl);
|
---|
1343 |
|
---|
1344 |
|
---|
1345 |
|
---|
1346 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1347 | vbox->layout()->addWidget(slider);
|
---|
1348 | slider->show();
|
---|
1349 | slider->setRange(0, 1000);
|
---|
1350 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1351 | slider->setValue(1000);
|
---|
1352 |
|
---|
1353 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSceneCut(int)));
|
---|
1354 |
|
---|
1355 | cb = new QCheckBox("Render errors", vbox);
|
---|
1356 | vbox->layout()->addWidget(cb);
|
---|
1357 | cb->setChecked(false);
|
---|
1358 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderErrors(bool)));
|
---|
1359 |
|
---|
1360 | cb = new QCheckBox("Render filter", vbox);
|
---|
1361 | vbox->layout()->addWidget(cb);
|
---|
1362 | cb->setChecked(true);
|
---|
1363 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderFilter(bool)));
|
---|
1364 |
|
---|
1365 | cb = new QCheckBox("Cut view cells", vbox);
|
---|
1366 | vbox->layout()->addWidget(cb);
|
---|
1367 | cb->setChecked(false);
|
---|
1368 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutViewCells(bool)));
|
---|
1369 |
|
---|
1370 | cb = new QCheckBox("Cut scene", vbox);
|
---|
1371 | vbox->layout()->addWidget(cb);
|
---|
1372 | cb->setChecked(false);
|
---|
1373 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutScene(bool)));
|
---|
1374 |
|
---|
1375 |
|
---|
1376 | slider = new QSlider(Qt::Horizontal, vbox);
|
---|
1377 | vbox->layout()->addWidget(slider);
|
---|
1378 | slider->show();
|
---|
1379 | slider->setRange(1, 1000);
|
---|
1380 | slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
|
---|
1381 | slider->setValue(500);
|
---|
1382 |
|
---|
1383 | connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTopDistance(int)));
|
---|
1384 |
|
---|
1385 | cb = new QCheckBox("Top View", vbox);
|
---|
1386 | vbox->layout()->addWidget(cb);
|
---|
1387 | cb->setChecked(false);
|
---|
1388 | connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetTopView(bool)));
|
---|
1389 |
|
---|
1390 | vbox = new QGroupBox("PVS Errors", this);
|
---|
1391 | layout()->addWidget(vbox);
|
---|
1392 |
|
---|
1393 | vl = new QVBoxLayout;
|
---|
1394 | vbox->setLayout(vl);
|
---|
1395 |
|
---|
1396 | mPvsErrorWidget = new QListWidget(vbox);
|
---|
1397 | vbox->layout()->addWidget(mPvsErrorWidget);
|
---|
1398 |
|
---|
1399 | connect(mPvsErrorWidget,
|
---|
1400 | SIGNAL(doubleClicked(const QModelIndex &)),
|
---|
1401 | this,
|
---|
1402 | SLOT(PvsErrorClicked(const QModelIndex &)));
|
---|
1403 |
|
---|
1404 | QPushButton *button = new QPushButton("Next Error Frame", vbox);
|
---|
1405 | vbox->layout()->addWidget(button);
|
---|
1406 | connect(button, SIGNAL(clicked(void)), SLOT(FocusNextPvsErrorFrame(void)));
|
---|
1407 |
|
---|
1408 | setWindowTitle("Preprocessor Control Widget");
|
---|
1409 | adjustSize();
|
---|
1410 | }
|
---|
1411 |
|
---|
1412 |
|
---|
1413 |
|
---|
1414 | void
|
---|
1415 | RendererControlWidget::FocusNextPvsErrorFrame(void)
|
---|
1416 | {
|
---|
1417 |
|
---|
1418 |
|
---|
1419 | }
|
---|
1420 |
|
---|
1421 | void
|
---|
1422 | RendererControlWidget::UpdatePvsErrorItem(int row,
|
---|
1423 | GlRendererBuffer::PvsErrorEntry &pvsErrorEntry)
|
---|
1424 | {
|
---|
1425 |
|
---|
1426 | QListWidgetItem *i = mPvsErrorWidget->item(row);
|
---|
1427 | QString s;
|
---|
1428 | s.sprintf("%5.5f", pvsErrorEntry.mError);
|
---|
1429 | if (i) {
|
---|
1430 | i->setText(s);
|
---|
1431 | } else {
|
---|
1432 | new QListWidgetItem(s, mPvsErrorWidget);
|
---|
1433 | }
|
---|
1434 | mPvsErrorWidget->update();
|
---|
1435 | }
|
---|
1436 |
|
---|
1437 | GlRendererWidget::GlRendererWidget(SceneGraph *sceneGraph,
|
---|
1438 | ViewCellsManager *viewcells,
|
---|
1439 | KdTree *tree,
|
---|
1440 | QWidget * parent,
|
---|
1441 | const QGLWidget * shareWidget,
|
---|
1442 | Qt::WFlags f
|
---|
1443 | )
|
---|
1444 | :
|
---|
1445 | GlRenderer(sceneGraph, viewcells, tree), QGLWidget(parent, shareWidget, f)
|
---|
1446 | {
|
---|
1447 | mTopView = false;
|
---|
1448 | mRenderViewCells = false;
|
---|
1449 | mTopDistance = 1.0f;
|
---|
1450 | mCutViewCells = false;
|
---|
1451 | mCutScene = false;
|
---|
1452 | mRenderErrors = false;
|
---|
1453 | mRenderFilter = true;
|
---|
1454 | mShowRenderCost = false;
|
---|
1455 | mShowPvsSizes = false;
|
---|
1456 |
|
---|
1457 | mPvsSize = 0;
|
---|
1458 | mRenderError = 0.0f;
|
---|
1459 | mControlWidget = new RendererControlWidget(NULL);
|
---|
1460 |
|
---|
1461 | connect(mControlWidget, SIGNAL(SetViewCellGranularity(int)), this, SLOT(SetViewCellGranularity(int)));
|
---|
1462 | connect(mControlWidget, SIGNAL(SetSceneCut(int)), this, SLOT(SetSceneCut(int)));
|
---|
1463 | connect(mControlWidget, SIGNAL(SetTopDistance(int)), this, SLOT(SetTopDistance(int)));
|
---|
1464 |
|
---|
1465 | connect(mControlWidget, SIGNAL(SetVisibilityFilterSize(int)), this, SLOT(SetVisibilityFilterSize(int)));
|
---|
1466 |
|
---|
1467 | connect(mControlWidget, SIGNAL(SetShowViewCells(bool)), this, SLOT(SetShowViewCells(bool)));
|
---|
1468 | connect(mControlWidget, SIGNAL(SetShowRenderCost(bool)), this, SLOT(SetShowRenderCost(bool)));
|
---|
1469 | connect(mControlWidget, SIGNAL(SetShowPvsSizes(bool)), this, SLOT(SetShowPvsSizes(bool)));
|
---|
1470 | connect(mControlWidget, SIGNAL(SetTopView(bool)), this, SLOT(SetTopView(bool)));
|
---|
1471 | connect(mControlWidget, SIGNAL(SetCutViewCells(bool)), this, SLOT(SetCutViewCells(bool)));
|
---|
1472 | connect(mControlWidget, SIGNAL(SetCutScene(bool)), this, SLOT(SetCutScene(bool)));
|
---|
1473 | connect(mControlWidget, SIGNAL(SetRenderErrors(bool)), this, SLOT(SetRenderErrors(bool)));
|
---|
1474 | connect(mControlWidget, SIGNAL(SetRenderFilter(bool)), this, SLOT(SetRenderFilter(bool)));
|
---|
1475 |
|
---|
1476 |
|
---|
1477 | mControlWidget->show();
|
---|
1478 | }
|
---|
1479 |
|
---|
1480 | void
|
---|
1481 | GlRendererWidget::SetViewCellGranularity(int number)
|
---|
1482 | {
|
---|
1483 | if (mViewCellsManager)
|
---|
1484 | // mViewCellsManager->SetMaxFilterSize(number);
|
---|
1485 | mViewCellsManager->CollectViewCells(number);
|
---|
1486 | updateGL();
|
---|
1487 | }
|
---|
1488 |
|
---|
1489 | void
|
---|
1490 | GlRendererWidget::SetVisibilityFilterSize(int number)
|
---|
1491 | {
|
---|
1492 | if (mViewCellsManager)
|
---|
1493 | mViewCellsManager->SetMaxFilterSize(number);
|
---|
1494 | updateGL();
|
---|
1495 | }
|
---|
1496 |
|
---|
1497 | void
|
---|
1498 | GlRendererWidget::SetSceneCut(int number)
|
---|
1499 | {
|
---|
1500 | // assume the cut plane can only be aligned with xz plane
|
---|
1501 | // shift it along y according to number, which is percentage of the bounding
|
---|
1502 | // box position
|
---|
1503 | if (mViewCellsManager) {
|
---|
1504 | AxisAlignedBox3 box = mViewCellsManager->GetViewSpaceBox();
|
---|
1505 | Vector3 p = box.Min() + (number/1000.0f)*box.Max();
|
---|
1506 | mSceneCutPlane.mNormal = Vector3(0,-1,0);
|
---|
1507 | mSceneCutPlane.mD = -DotProd(mSceneCutPlane.mNormal, p);
|
---|
1508 | updateGL();
|
---|
1509 | }
|
---|
1510 | }
|
---|
1511 |
|
---|
1512 | void
|
---|
1513 | GlRendererWidget::SetTopDistance(int number)
|
---|
1514 | {
|
---|
1515 | mTopDistance = number/1000.0f;
|
---|
1516 | updateGL();
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | void
|
---|
1520 | GlRendererWidget::RenderViewCells()
|
---|
1521 | {
|
---|
1522 | mUseFalseColors = true;
|
---|
1523 |
|
---|
1524 | SetupCamera();
|
---|
1525 | glEnable(GL_CULL_FACE);
|
---|
1526 | //glDisable(GL_CULL_FACE);
|
---|
1527 | glCullFace(GL_FRONT);
|
---|
1528 | double eq[4];
|
---|
1529 | eq[0] = mSceneCutPlane.mNormal.x;
|
---|
1530 | eq[1] = mSceneCutPlane.mNormal.y;
|
---|
1531 | eq[2] = mSceneCutPlane.mNormal.z;
|
---|
1532 | eq[3] = mSceneCutPlane.mD;
|
---|
1533 |
|
---|
1534 | if (mCutViewCells) {
|
---|
1535 | glClipPlane(GL_CLIP_PLANE0, eq);
|
---|
1536 | glEnable(GL_CLIP_PLANE0);
|
---|
1537 | }
|
---|
1538 |
|
---|
1539 | int i;
|
---|
1540 | ViewCellContainer &viewcells = mViewCellsManager->GetViewCells();
|
---|
1541 | int maxPvs = -1;
|
---|
1542 | for (i=0; i < viewcells.size(); i++) {
|
---|
1543 | ViewCell *vc = viewcells[i];
|
---|
1544 | int p = vc->GetPvs().GetSize();
|
---|
1545 | if (p > maxPvs)
|
---|
1546 | maxPvs = p;
|
---|
1547 | }
|
---|
1548 |
|
---|
1549 |
|
---|
1550 | for (i=0; i < viewcells.size(); i++) {
|
---|
1551 | ViewCell *vc = viewcells[i];
|
---|
1552 | // Mesh *m = vc->GetMesh();
|
---|
1553 |
|
---|
1554 |
|
---|
1555 | RgbColor c;
|
---|
1556 |
|
---|
1557 | if (!mShowPvsSizes)
|
---|
1558 | c = vc->GetColor();
|
---|
1559 | else {
|
---|
1560 | float importance = (float)vc->GetPvs().GetSize() / (float)maxPvs;
|
---|
1561 | c = RgbColor(importance, 1.0f - importance, 0.0f);
|
---|
1562 | }
|
---|
1563 | glColor3f(c.r, c.g, c.b);
|
---|
1564 |
|
---|
1565 | RenderViewCell(vc);
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | glDisable(GL_CLIP_PLANE0);
|
---|
1569 |
|
---|
1570 | }
|
---|
1571 |
|
---|
1572 | void GlRendererBuffer::SampleBeamContributions(Intersectable *sourceObject,
|
---|
1573 | Beam &beam,
|
---|
1574 | const int desiredSamples,
|
---|
1575 | BeamSampleStatistics &stat)
|
---|
1576 | {
|
---|
1577 | // TODO: should be moved out of here (not to be done every time)
|
---|
1578 | // only back faces are interesting for the depth pass
|
---|
1579 | glShadeModel(GL_FLAT);
|
---|
1580 | glDisable(GL_LIGHTING);
|
---|
1581 |
|
---|
1582 | // needed to kill the fragments for the front buffer
|
---|
1583 | glEnable(GL_ALPHA_TEST);
|
---|
1584 | glAlphaFunc(GL_GREATER, 0);
|
---|
1585 |
|
---|
1586 | // assumes that the beam is constructed and contains kd-tree nodes
|
---|
1587 | // and viewcells which it intersects
|
---|
1588 |
|
---|
1589 |
|
---|
1590 | // Get the number of viewpoints to be sampled
|
---|
1591 | // Now it is a sqrt but in general a wiser decision could be made.
|
---|
1592 | // The less viewpoints the better for rendering performance, since less passes
|
---|
1593 | // over the beam is needed.
|
---|
1594 | // The viewpoints could actually be generated outside of the bounding box which
|
---|
1595 | // would distribute the 'efective viewpoints' of the object surface and thus
|
---|
1596 | // with a few viewpoints better sample the viewpoint space....
|
---|
1597 |
|
---|
1598 | //TODO: comment in
|
---|
1599 | //int viewPointSamples = sqrt((float)desiredSamples);
|
---|
1600 | int viewPointSamples = max(desiredSamples / (GetWidth() * GetHeight()), 1);
|
---|
1601 |
|
---|
1602 | // the number of direction samples per pass is given by the number of viewpoints
|
---|
1603 | int directionalSamples = desiredSamples / viewPointSamples;
|
---|
1604 |
|
---|
1605 | Debug << "directional samples: " << directionalSamples << endl;
|
---|
1606 | for (int i = 0; i < viewPointSamples; ++ i)
|
---|
1607 | {
|
---|
1608 | Vector3 viewPoint = beam.mBox.GetRandomPoint();
|
---|
1609 |
|
---|
1610 | // perhaps the viewpoint should be shifted back a little bit so that it always lies
|
---|
1611 | // inside the source object
|
---|
1612 | // 'ideally' the viewpoints would be distributed on the soureObject surface, but this
|
---|
1613 | // would require more complicated sampling (perhaps hierarchical rejection sampling of
|
---|
1614 | // the object surface is an option here - only the mesh faces which are inside the box
|
---|
1615 | // are considered as candidates)
|
---|
1616 |
|
---|
1617 | SampleViewpointContributions(sourceObject,
|
---|
1618 | viewPoint,
|
---|
1619 | beam,
|
---|
1620 | directionalSamples,
|
---|
1621 | stat);
|
---|
1622 | }
|
---|
1623 |
|
---|
1624 |
|
---|
1625 | // note:
|
---|
1626 | // this routine would be called only if the number of desired samples is sufficiently
|
---|
1627 | // large - for other rss tree cells the cpu based sampling is perhaps more efficient
|
---|
1628 | // distributing the work between cpu and gpu would also allow us to place more sophisticated
|
---|
1629 | // sample distributions (silhouette ones) using the cpu and the jittered once on the GPU
|
---|
1630 | // in order that thios scheme is working well the gpu render buffer should run in a separate
|
---|
1631 | // thread than the cpu sampler, which would not be such a big problem....
|
---|
1632 |
|
---|
1633 | // disable alpha test again
|
---|
1634 | glDisable(GL_ALPHA_TEST);
|
---|
1635 | }
|
---|
1636 |
|
---|
1637 |
|
---|
1638 | void GlRendererBuffer::SampleViewpointContributions(Intersectable *sourceObject,
|
---|
1639 | const Vector3 viewPoint,
|
---|
1640 | Beam &beam,
|
---|
1641 | const int samples,
|
---|
1642 | BeamSampleStatistics &stat)
|
---|
1643 | {
|
---|
1644 | // 1. setup the view port to match the desired samples
|
---|
1645 | glViewport(0, 0, samples, samples);
|
---|
1646 |
|
---|
1647 | // 2. setup the projection matrix and view matrix to match the viewpoint + beam.mDirBox
|
---|
1648 | SetupProjectionForViewPoint(viewPoint, beam, sourceObject);
|
---|
1649 |
|
---|
1650 |
|
---|
1651 | // 3. reset z-buffer to 0 and render the source object for the beam
|
---|
1652 | // with glCullFace(Enabled) and glFrontFace(GL_CW)
|
---|
1653 | // save result to the front depth map
|
---|
1654 | // the front depth map holds ray origins
|
---|
1655 |
|
---|
1656 |
|
---|
1657 | // front depth buffer must be initialised to 0
|
---|
1658 | float clearDepth;
|
---|
1659 |
|
---|
1660 | glGetFloatv(GL_DEPTH_CLEAR_VALUE, &clearDepth);
|
---|
1661 | glClearDepth(0.0f);
|
---|
1662 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
---|
1663 |
|
---|
1664 |
|
---|
1665 | //glFrontFace(GL_CW);
|
---|
1666 | glEnable(GL_CULL_FACE);
|
---|
1667 | glCullFace(GL_FRONT);
|
---|
1668 | glColorMask(0, 0, 0, 0);
|
---|
1669 |
|
---|
1670 |
|
---|
1671 | // stencil is increased where the source object is located
|
---|
1672 | glEnable(GL_STENCIL_TEST);
|
---|
1673 | glStencilFunc(GL_ALWAYS, 0x1, 0x1);
|
---|
1674 | glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
|
---|
1675 |
|
---|
1676 |
|
---|
1677 | #if 0
|
---|
1678 | static int glSourceObjList = -1;
|
---|
1679 | if (glSourceObjList != -1)
|
---|
1680 | {
|
---|
1681 | glSourceObjList = glGenLists(1);
|
---|
1682 | glNewList(glSourceObjList, GL_COMPILE);
|
---|
1683 |
|
---|
1684 | RenderIntersectable(sourceObject);
|
---|
1685 |
|
---|
1686 | glEndList();
|
---|
1687 | }
|
---|
1688 | glCallList(glSourceObjList);
|
---|
1689 |
|
---|
1690 | #else
|
---|
1691 | RenderIntersectable(sourceObject);
|
---|
1692 |
|
---|
1693 | #endif
|
---|
1694 |
|
---|
1695 | // copy contents of the front depth buffer into depth texture
|
---|
1696 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
1697 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1698 |
|
---|
1699 |
|
---|
1700 | // reset clear function
|
---|
1701 | glClearDepth(clearDepth);
|
---|
1702 |
|
---|
1703 |
|
---|
1704 |
|
---|
1705 | // 4. set up the termination depth buffer (= standard depth buffer)
|
---|
1706 | // only rays which have non-zero entry in the origin buffer are valid since
|
---|
1707 | // they realy start on the object surface (this is tagged by setting a
|
---|
1708 | // stencil buffer bit at step 3).
|
---|
1709 |
|
---|
1710 | glStencilFunc(GL_EQUAL, 0x1, 0x1);
|
---|
1711 | glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
|
---|
1712 |
|
---|
1713 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
1714 | glDepthMask(1);
|
---|
1715 |
|
---|
1716 | glEnable(GL_DEPTH_TEST);
|
---|
1717 |
|
---|
1718 | glEnable(GL_CULL_FACE);
|
---|
1719 | glCullFace(GL_BACK);
|
---|
1720 |
|
---|
1721 | // setup front depth buffer
|
---|
1722 | glEnable(GL_TEXTURE_2D);
|
---|
1723 |
|
---|
1724 | // bind pixel shader implementing the front depth buffer functionality
|
---|
1725 | cgGLBindProgram(sCgFragmentProgram);
|
---|
1726 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
1727 |
|
---|
1728 |
|
---|
1729 | // 5. render all objects inside the beam
|
---|
1730 | // we can use id based false color to read them back for gaining the pvs
|
---|
1731 |
|
---|
1732 | glColorMask(1, 1, 1, 1);
|
---|
1733 |
|
---|
1734 |
|
---|
1735 | // if objects not stored in beam => extract objects
|
---|
1736 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
1737 | {
|
---|
1738 | vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
1739 |
|
---|
1740 | Intersectable::NewMail();
|
---|
1741 | for (it = beam.mKdNodes.begin(); it != it_end; ++ it)
|
---|
1742 | {
|
---|
1743 | mKdTree->CollectObjects(*it, beam.mObjects);
|
---|
1744 | }
|
---|
1745 | }
|
---|
1746 |
|
---|
1747 |
|
---|
1748 | // (objects can be compiled to a gl list now so that subsequent rendering for
|
---|
1749 | // this beam is fast - the same hold for step 3)
|
---|
1750 | // Afterwards we have two depth buffers defining the ray origin and termination
|
---|
1751 |
|
---|
1752 |
|
---|
1753 | #if 0
|
---|
1754 | static int glObjList = -1;
|
---|
1755 | if (glObjList != -1)
|
---|
1756 | {
|
---|
1757 | glObjList = glGenLists(1);
|
---|
1758 | glNewList(glObjList, GL_COMPILE);
|
---|
1759 |
|
---|
1760 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1761 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1762 | {
|
---|
1763 | // render all objects except the source object
|
---|
1764 | if (*it != sourceObject)
|
---|
1765 | RenderIntersectable(*it);
|
---|
1766 | }
|
---|
1767 |
|
---|
1768 | glEndList();
|
---|
1769 | }
|
---|
1770 |
|
---|
1771 | glCallList(glObjList);
|
---|
1772 | #else
|
---|
1773 | ObjectContainer::const_iterator it, it_end = beam.mObjects.end();
|
---|
1774 | for (it = beam.mObjects.begin(); it != it_end; ++ it)
|
---|
1775 | {
|
---|
1776 | // render all objects except the source object
|
---|
1777 | if (*it != sourceObject)
|
---|
1778 | RenderIntersectable(*it);
|
---|
1779 | }
|
---|
1780 | #endif
|
---|
1781 |
|
---|
1782 |
|
---|
1783 |
|
---|
1784 | // 6. Use occlusion queries for all viewcell meshes associated with the beam ->
|
---|
1785 | // a fragment passes if the corresponding stencil fragment is set and its depth is
|
---|
1786 | // between origin and termination buffer
|
---|
1787 |
|
---|
1788 | // create new queries if necessary
|
---|
1789 | GenQueries((int)beam.mViewCells.size());
|
---|
1790 |
|
---|
1791 | // check whether any backfacing polygon would pass the depth test?
|
---|
1792 | // matt: should check both back /front facing because of dual depth buffer
|
---|
1793 | // and danger of cutting the near plane with front facing polys.
|
---|
1794 |
|
---|
1795 | glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
---|
1796 | glDepthMask(GL_FALSE);
|
---|
1797 | glDisable(GL_CULL_FACE);
|
---|
1798 |
|
---|
1799 |
|
---|
1800 | ViewCellContainer::const_iterator vit, vit_end = beam.mViewCells.end();
|
---|
1801 |
|
---|
1802 | int queryIdx = 0;
|
---|
1803 |
|
---|
1804 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1805 | {
|
---|
1806 | glBeginOcclusionQueryNV(sQueries[queryIdx ++]);
|
---|
1807 |
|
---|
1808 | RenderIntersectable(*vit);
|
---|
1809 |
|
---|
1810 | glEndOcclusionQueryNV();
|
---|
1811 | }
|
---|
1812 |
|
---|
1813 |
|
---|
1814 |
|
---|
1815 | // at this point, if possible, go and do some other computation
|
---|
1816 |
|
---|
1817 |
|
---|
1818 |
|
---|
1819 | // 7. The number of visible pixels is the number of sample rays which see the source
|
---|
1820 | // object from the corresponding viewcell -> remember these values for later update
|
---|
1821 | // of the viewcell pvs - or update immediately?
|
---|
1822 |
|
---|
1823 | queryIdx = 0;
|
---|
1824 | unsigned int pixelCount;
|
---|
1825 |
|
---|
1826 | for (vit = beam.mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1827 | {
|
---|
1828 | // fetch queries
|
---|
1829 | glGetOcclusionQueryuivNV(sQueries[queryIdx ++],
|
---|
1830 | GL_PIXEL_COUNT_NV,
|
---|
1831 | &pixelCount);
|
---|
1832 | if (pixelCount)
|
---|
1833 | Debug << "view cell " << (*vit)->GetId() << " visible pixels: " << pixelCount << endl;
|
---|
1834 | }
|
---|
1835 |
|
---|
1836 |
|
---|
1837 | // 8. Copmpute rendering statistics
|
---|
1838 | // In general it is not neccessary to remember to extract all the rays cast. I hope it
|
---|
1839 | // would be sufficient to gain only the intergral statistics about the new contributions
|
---|
1840 | // and so the rss tree would actually store no new rays (only the initial ones)
|
---|
1841 | // the subdivision of the tree would only be driven by the statistics (the glrender could
|
---|
1842 | // evaluate the contribution entropy for example)
|
---|
1843 | // However might be an option to extract/store only those the rays which made a contribution
|
---|
1844 | // (new viewcell has been discovered) or relative contribution greater than a threshold ...
|
---|
1845 |
|
---|
1846 | ObjectContainer pvsObj;
|
---|
1847 | stat.pvsSize = ComputePvs(beam.mObjects, pvsObj);
|
---|
1848 |
|
---|
1849 | // to gain ray source and termination
|
---|
1850 | // copy contents of ray termination buffer into depth texture
|
---|
1851 | // and compare with ray source buffer
|
---|
1852 | #if 0
|
---|
1853 | VssRayContainer rays;
|
---|
1854 |
|
---|
1855 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
1856 | glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, depthMapSize, depthMapSize);
|
---|
1857 |
|
---|
1858 | ComputeRays(Intersectable *sourceObj, rays);
|
---|
1859 |
|
---|
1860 | #endif
|
---|
1861 |
|
---|
1862 |
|
---|
1863 |
|
---|
1864 | //-- cleanup
|
---|
1865 |
|
---|
1866 |
|
---|
1867 | // reset gl state
|
---|
1868 | glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
|
---|
1869 | glDepthMask(GL_TRUE);
|
---|
1870 | glEnable(GL_CULL_FACE);
|
---|
1871 | glDisable(GL_STENCIL_TEST);
|
---|
1872 | cgGLDisableProfile(sCgFragmentProfile);
|
---|
1873 | glDisable(GL_TEXTURE_2D);
|
---|
1874 |
|
---|
1875 | // remove objects from beam
|
---|
1876 | if (beam.mFlags & !Beam::STORE_OBJECTS)
|
---|
1877 | beam.mObjects.clear();
|
---|
1878 | }
|
---|
1879 |
|
---|
1880 |
|
---|
1881 | void GlRendererBuffer::GenQueries(const int numQueries)
|
---|
1882 | {
|
---|
1883 | if ((int)sQueries.size() < numQueries)
|
---|
1884 | {
|
---|
1885 | const int n = numQueries - (int)sQueries.size();
|
---|
1886 | unsigned int *newQueries = new unsigned int[n];
|
---|
1887 |
|
---|
1888 | glGenOcclusionQueriesNV(n, (unsigned int *)newQueries);
|
---|
1889 |
|
---|
1890 | for (int i = 0; i < n; ++ i)
|
---|
1891 | {
|
---|
1892 | sQueries.push_back(newQueries[i]);
|
---|
1893 | }
|
---|
1894 |
|
---|
1895 | delete [] newQueries;
|
---|
1896 | }
|
---|
1897 | }
|
---|
1898 |
|
---|
1899 |
|
---|
1900 | void GlRendererBuffer::SetupProjectionForViewPoint(const Vector3 &viewPoint,
|
---|
1901 | const Beam &beam,
|
---|
1902 | Intersectable *sourceObject)
|
---|
1903 | {
|
---|
1904 | float left, right, bottom, top, znear, zfar;
|
---|
1905 |
|
---|
1906 | beam.ComputePerspectiveFrustum(left, right, bottom, top, znear, zfar,
|
---|
1907 | mSceneGraph->GetBox());
|
---|
1908 |
|
---|
1909 | //Debug << left << " " << right << " " << bottom << " " << top << " " << znear << " " << zfar << endl;
|
---|
1910 | glMatrixMode(GL_PROJECTION);
|
---|
1911 | glLoadIdentity();
|
---|
1912 | glFrustum(left, right, bottom, top, znear, zfar);
|
---|
1913 | //glFrustum(-1, 1, -1, 1, 1, 20000);
|
---|
1914 |
|
---|
1915 | const Vector3 center = viewPoint + beam.GetMainDirection() * (zfar - znear) * 0.3f;
|
---|
1916 | const Vector3 up =
|
---|
1917 | Normalize(CrossProd(beam.mPlanes[0].mNormal, beam.mPlanes[4].mNormal));
|
---|
1918 |
|
---|
1919 | #ifdef _DEBUG
|
---|
1920 | Debug << "view point: " << viewPoint << endl;
|
---|
1921 | Debug << "eye: " << center << endl;
|
---|
1922 | Debug << "up: " << up << endl;
|
---|
1923 | #endif
|
---|
1924 |
|
---|
1925 | glMatrixMode(GL_MODELVIEW);
|
---|
1926 | glLoadIdentity();
|
---|
1927 | gluLookAt(viewPoint.x, viewPoint.y, viewPoint.z,
|
---|
1928 | center.x, center.y, center.z,
|
---|
1929 | up.x, up.y, up.z);
|
---|
1930 | }
|
---|
1931 |
|
---|
1932 |
|
---|
1933 | void GlRendererBuffer::InitGL()
|
---|
1934 | {
|
---|
1935 | makeCurrent();
|
---|
1936 | GlRenderer::InitGL();
|
---|
1937 |
|
---|
1938 | #if 1
|
---|
1939 | // initialise dual depth buffer textures
|
---|
1940 | glGenTextures(1, &frontDepthMap);
|
---|
1941 | glBindTexture(GL_TEXTURE_2D, frontDepthMap);
|
---|
1942 |
|
---|
1943 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
1944 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
1945 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
1946 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
1947 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
1948 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
1949 |
|
---|
1950 | glGenTextures(1, &backDepthMap);
|
---|
1951 | glBindTexture(GL_TEXTURE_2D, backDepthMap);
|
---|
1952 |
|
---|
1953 | glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, depthMapSize,
|
---|
1954 | depthMapSize, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
|
---|
1955 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
---|
1956 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
---|
1957 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
---|
1958 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
---|
1959 |
|
---|
1960 | // cg initialization
|
---|
1961 | cgSetErrorCallback(handleCgError);
|
---|
1962 | sCgContext = cgCreateContext();
|
---|
1963 |
|
---|
1964 | if (cgGLIsProfileSupported(CG_PROFILE_ARBFP1))
|
---|
1965 | sCgFragmentProfile = CG_PROFILE_ARBFP1;
|
---|
1966 | else
|
---|
1967 | {
|
---|
1968 | // try FP30
|
---|
1969 | if (cgGLIsProfileSupported(CG_PROFILE_FP30))
|
---|
1970 | sCgFragmentProfile = CG_PROFILE_FP30;
|
---|
1971 | else
|
---|
1972 | {
|
---|
1973 | Debug << "Neither arbfp1 or fp30 fragment profiles supported on this system" << endl;
|
---|
1974 | exit(1);
|
---|
1975 | }
|
---|
1976 | }
|
---|
1977 |
|
---|
1978 |
|
---|
1979 | sCgFragmentProgram = cgCreateProgramFromFile(sCgContext,
|
---|
1980 | CG_SOURCE, "../src/dual_depth.cg",
|
---|
1981 | sCgFragmentProfile,
|
---|
1982 | NULL,
|
---|
1983 | NULL);
|
---|
1984 |
|
---|
1985 | if (!cgIsProgramCompiled(sCgFragmentProgram))
|
---|
1986 | cgCompileProgram(sCgFragmentProgram);
|
---|
1987 |
|
---|
1988 | cgGLLoadProgram(sCgFragmentProgram);
|
---|
1989 | cgGLBindProgram(sCgFragmentProgram);
|
---|
1990 |
|
---|
1991 | Debug << "---- PROGRAM BEGIN ----\n" <<
|
---|
1992 | cgGetProgramString(sCgFragmentProgram, CG_COMPILED_PROGRAM) << "---- PROGRAM END ----\n";
|
---|
1993 |
|
---|
1994 | #endif
|
---|
1995 | doneCurrent();
|
---|
1996 | }
|
---|
1997 |
|
---|
1998 |
|
---|
1999 | void GlRendererBuffer::ComputeRays(Intersectable *sourceObj, VssRayContainer &rays)
|
---|
2000 | {
|
---|
2001 | for (int i = 0; i < depthMapSize * depthMapSize; ++ i)
|
---|
2002 | {
|
---|
2003 | //todo glGetTexImage()
|
---|
2004 | }
|
---|
2005 | }
|
---|
2006 |
|
---|
2007 |
|
---|
2008 |
|
---|
2009 | inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
2010 | {
|
---|
2011 | return obj1->mId < obj2->mId;
|
---|
2012 | }
|
---|
2013 |
|
---|
2014 |
|
---|
2015 | int GlRendererBuffer::ComputePvs(ObjectContainer &objects,
|
---|
2016 | ObjectContainer &pvs) const
|
---|
2017 | {
|
---|
2018 | int pvsSize = 0;
|
---|
2019 | QImage image = toImage();
|
---|
2020 | Intersectable::NewMail();
|
---|
2021 |
|
---|
2022 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
2023 |
|
---|
2024 | MeshInstance dummy(NULL);
|
---|
2025 |
|
---|
2026 | Intersectable *obj = NULL;
|
---|
2027 |
|
---|
2028 | for (int x = 0; x < image.width(); ++ x)
|
---|
2029 | {
|
---|
2030 | for (int y = 0; y < image.height(); ++ y)
|
---|
2031 | {
|
---|
2032 | QRgb pix = image.pixel(x, y);
|
---|
2033 | const int id = GetId(qRed(pix), qGreen(pix), qBlue(pix));
|
---|
2034 |
|
---|
2035 | dummy.SetId(id);
|
---|
2036 |
|
---|
2037 | ObjectContainer::iterator oit =
|
---|
2038 | lower_bound(objects.begin(), objects.end(), &dummy, ilt);
|
---|
2039 |
|
---|
2040 |
|
---|
2041 | if (//(oit != oit.end()) &&
|
---|
2042 | ((*oit)->GetId() == id) &&
|
---|
2043 | !obj->Mailed())
|
---|
2044 | {
|
---|
2045 | obj = *oit;
|
---|
2046 | obj->Mail();
|
---|
2047 | ++ pvsSize;
|
---|
2048 | pvs.push_back(obj);
|
---|
2049 | }
|
---|
2050 | }
|
---|
2051 | }
|
---|
2052 |
|
---|
2053 | return pvsSize;
|
---|
2054 | }
|
---|
2055 |
|
---|
2056 | /***********************************************************************/
|
---|
2057 | /* GlDebuggerWidget implementation */
|
---|
2058 | /***********************************************************************/
|
---|
2059 |
|
---|
2060 |
|
---|
2061 | GlDebuggerWidget::GlDebuggerWidget(GlRendererBuffer *buf, QWidget *parent)
|
---|
2062 | : QGLWidget(QGLFormat(QGL::SampleBuffers), parent), mRenderBuffer(buf)
|
---|
2063 | {
|
---|
2064 | // create the pbuffer
|
---|
2065 | //pbuffer = new QGLPixelBuffer(QSize(512, 512), format(), this);
|
---|
2066 | timerId = startTimer(20);
|
---|
2067 | setWindowTitle(("OpenGL pbuffers"));
|
---|
2068 | }
|
---|
2069 |
|
---|
2070 |
|
---|
2071 | GlDebuggerWidget::~GlDebuggerWidget()
|
---|
2072 | {
|
---|
2073 | mRenderBuffer->releaseFromDynamicTexture();
|
---|
2074 | glDeleteTextures(1, &dynamicTexture);
|
---|
2075 |
|
---|
2076 | DEL_PTR(mRenderBuffer);
|
---|
2077 | }
|
---|
2078 |
|
---|
2079 |
|
---|
2080 | void GlDebuggerWidget::initializeGL()
|
---|
2081 | {
|
---|
2082 | glMatrixMode(GL_PROJECTION);
|
---|
2083 | glLoadIdentity();
|
---|
2084 |
|
---|
2085 | glFrustum(-1, 1, -1, 1, 10, 100);
|
---|
2086 | glTranslatef(-0.5f, -0.5f, -0.5f);
|
---|
2087 | glTranslatef(0.0f, 0.0f, -15.0f);
|
---|
2088 | glMatrixMode(GL_MODELVIEW);
|
---|
2089 |
|
---|
2090 | glEnable(GL_CULL_FACE);
|
---|
2091 | initCommon();
|
---|
2092 | initPbuffer();
|
---|
2093 |
|
---|
2094 | }
|
---|
2095 |
|
---|
2096 |
|
---|
2097 | void GlDebuggerWidget::resizeGL(int w, int h)
|
---|
2098 | {
|
---|
2099 | glViewport(0, 0, w, h);
|
---|
2100 | }
|
---|
2101 |
|
---|
2102 |
|
---|
2103 | void GlDebuggerWidget::paintGL()
|
---|
2104 | {
|
---|
2105 | // draw a spinning cube into the pbuffer..
|
---|
2106 | mRenderBuffer->makeCurrent();
|
---|
2107 |
|
---|
2108 | BeamSampleStatistics stats;
|
---|
2109 | mRenderBuffer->SampleBeamContributions(mSourceObject, mBeam, mSamples, stats);
|
---|
2110 |
|
---|
2111 | glFlush();
|
---|
2112 |
|
---|
2113 | // rendering directly to a texture is not supported on X11, unfortunately
|
---|
2114 | mRenderBuffer->updateDynamicTexture(dynamicTexture);
|
---|
2115 |
|
---|
2116 | // and use the pbuffer contents as a texture when rendering the
|
---|
2117 | // background and the bouncing cubes
|
---|
2118 | makeCurrent();
|
---|
2119 | glBindTexture(GL_TEXTURE_2D, dynamicTexture);
|
---|
2120 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
2121 |
|
---|
2122 | // draw the background
|
---|
2123 | glMatrixMode(GL_MODELVIEW);
|
---|
2124 | glPushMatrix();
|
---|
2125 | glLoadIdentity();
|
---|
2126 | glMatrixMode(GL_PROJECTION);
|
---|
2127 | glPushMatrix();
|
---|
2128 | glLoadIdentity();
|
---|
2129 |
|
---|
2130 | glPopMatrix();
|
---|
2131 | glMatrixMode(GL_MODELVIEW);
|
---|
2132 | glPopMatrix();
|
---|
2133 | }
|
---|
2134 |
|
---|
2135 |
|
---|
2136 | void GlDebuggerWidget::initPbuffer()
|
---|
2137 | {
|
---|
2138 | // set up the pbuffer context
|
---|
2139 | mRenderBuffer->makeCurrent();
|
---|
2140 | /*mRenderBuffer->InitGL();
|
---|
2141 |
|
---|
2142 | glViewport(0, 0, mRenderBuffer->size().width(), mRenderBuffer->size().height());
|
---|
2143 | glMatrixMode(GL_PROJECTION);
|
---|
2144 | glLoadIdentity();
|
---|
2145 | glOrtho(-1, 1, -1, 1, -99, 99);
|
---|
2146 | glTranslatef(-0.5f, -0.5f, 0.0f);
|
---|
2147 | glMatrixMode(GL_MODELVIEW);
|
---|
2148 | glLoadIdentity();
|
---|
2149 |
|
---|
2150 | glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);*/
|
---|
2151 |
|
---|
2152 | // generate a texture that has the same size/format as the pbuffer
|
---|
2153 | dynamicTexture = mRenderBuffer->generateDynamicTexture();
|
---|
2154 |
|
---|
2155 | // bind the dynamic texture to the pbuffer - this is a no-op under X11
|
---|
2156 | mRenderBuffer->bindToDynamicTexture(dynamicTexture);
|
---|
2157 | makeCurrent();
|
---|
2158 | }
|
---|
2159 |
|
---|
2160 | void GlDebuggerWidget::initCommon()
|
---|
2161 | {
|
---|
2162 | glEnable(GL_TEXTURE_2D);
|
---|
2163 | glEnable(GL_DEPTH_TEST);
|
---|
2164 |
|
---|
2165 | glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
---|
2166 | }
|
---|