[1944] | 1 | #include "glInterface.h"
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| 2 | #include "GlobalLinesRenderer.h"
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| 3 | #include "common.h"
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| 4 | #include "RenderTexture.h"
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| 5 | #include "Preprocessor.h"
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| 6 | #include "GlRenderer.h"
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[1960] | 7 | #include "Exporter.h"
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| 8 |
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[1953] | 9 | // the devil library
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| 10 | #include <IL/il.h>
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| 11 | #include <IL/ilu.h>
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| 12 | #include <IL/ilut.h>
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[1944] | 13 |
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| 14 | #include <Cg/cg.h>
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| 15 | #include <Cg/cgGL.h>
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| 16 |
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| 17 | //#include <QtOpenGL>
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| 18 |
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| 19 | namespace GtpVisibilityPreprocessor {
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| 20 |
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| 21 |
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| 22 | static CGcontext sCgContext = NULL;
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| 23 | static CGprogram sCgDepthPeelingProgram = NULL;
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| 24 | static CGprogram sCgPassThroughProgram = NULL;
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| 25 |
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| 26 | static CGprofile sCgFragmentProfile;
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| 27 | static CGparameter sTextureParam;
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| 28 |
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| 29 | GlobalLinesRenderer *globalLinesRenderer = NULL;
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| 30 |
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[1961] | 31 | static int texWidth = 256;
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| 32 | static int texHeight = 256;
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[1944] | 33 |
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[1960] | 34 | static bool isDepth = true;
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[1953] | 35 |
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| 36 | static void InitDevIl()
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| 37 | {
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| 38 | ilInit();
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| 39 | ILuint ImageName;
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| 40 | ilGenImages(1, &ImageName);
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| 41 | ilBindImage(ImageName);
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| 42 | ilEnable(IL_FILE_OVERWRITE);
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| 43 |
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| 44 | // ilRegisterFormat(IL_RGBA);
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| 45 | // ilRegisterType(IL_FLOAT);
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| 46 |
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| 47 | // ilEnable(IL_ORIGIN_SET);
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| 48 | // ilOriginFunc(IL_ORIGIN_UPPER_LEFT);
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| 49 | }
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| 50 |
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| 51 |
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[1944] | 52 | static void cgErrorCallback()
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| 53 | {
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| 54 | CGerror lastError = cgGetError();
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| 55 |
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| 56 | if(lastError)
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| 57 | {
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| 58 | printf("%s\n\n", cgGetErrorString(lastError));
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| 59 | printf("%s\n", cgGetLastListing(sCgContext));
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| 60 | printf("Cg error, exiting...\n");
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| 61 |
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| 62 | exit(0);
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| 63 | }
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| 64 | }
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| 65 |
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| 66 | static void PrintGLerror(char *msg)
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| 67 | {
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| 68 | GLenum errCode;
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| 69 | const GLubyte *errStr;
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| 70 |
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| 71 | if ((errCode = glGetError()) != GL_NO_ERROR)
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| 72 | {
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| 73 | errStr = gluErrorString(errCode);
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| 74 | fprintf(stderr,"OpenGL ERROR: %s: %s\n", errStr, msg);
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| 75 | }
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| 76 | }
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| 77 |
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| 78 |
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| 79 | void Reshape(int w, int h)
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| 80 | {
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| 81 | if (h == 0) h = 1;
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| 82 |
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| 83 | glViewport(0, 0, w, h);
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| 84 |
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| 85 | glMatrixMode(GL_PROJECTION);
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| 86 | glLoadIdentity();
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| 87 |
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[1949] | 88 | //gluPerspective(60.0, (GLfloat)w/(GLfloat)h, 3, 5000.0);
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[1944] | 89 | //gluPerspective(60.0, (GLfloat)w/(GLfloat)h, 0.5, 10.0);
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[1951] | 90 | glOrtho(-1, 1, -1, 1, 0.5, 15);
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[1944] | 91 | }
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| 92 |
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| 93 |
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[1960] | 94 | void SetFrustum(const int sizeX, const int sizeY,
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| 95 | const float nearPlane, const float farPlane)
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[1953] | 96 | {
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| 97 | glMatrixMode(GL_PROJECTION);
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| 98 | glLoadIdentity();
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| 99 |
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[1960] | 100 | glOrtho(-sizeX * 0.5, sizeX * 0.5,
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| 101 | -sizeY * 0.5, sizeY * 0.5,
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[1953] | 102 | nearPlane, farPlane);
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| 103 |
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| 104 | /*glOrtho(0, sizeX,
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| 105 | 0, sizeY ,
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| 106 | nearPlane, farPlane);*/
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| 107 | }
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| 108 |
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[1944] | 109 | void Display()
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| 110 | {
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| 111 | //globalLinesRenderer->DrawGeometry();
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[1958] | 112 | //globalLinesRenderer->CastGlobalLines(Beam(), 0);
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[1960] | 113 | globalLinesRenderer->DisplayBuffer(isDepth);
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[1944] | 114 | PrintGLerror("display");
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| 115 |
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| 116 | glutSwapBuffers();
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| 117 | }
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| 118 |
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| 119 |
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| 120 | void Idle()
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| 121 | {
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| 122 | glutPostRedisplay();
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| 123 | }
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| 124 |
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| 125 |
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| 126 | void Keyboard(unsigned char key, int x, int y)
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| 127 | {
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| 128 | switch(key)
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| 129 | {
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[1949] | 130 | case '2':
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[1958] | 131 | {
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| 132 | VssRayContainer rays;
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| 133 |
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| 134 | ++ globalLinesRenderer->mMaxDepth;
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| 135 | globalLinesRenderer->ApplyDepthPeeling(rays, Beam(), 0);
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| 136 |
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| 137 | cout << "max depth: " << globalLinesRenderer->mMaxDepth << endl;
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[1960] | 138 | CLEAR_CONTAINER(rays);
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[1958] | 139 | return;
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| 140 | }
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[1949] | 141 | case '1':
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[1958] | 142 | {
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| 143 | VssRayContainer rays;
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| 144 |
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| 145 | -- globalLinesRenderer->mMaxDepth;
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| 146 | cout << "max depth: " << globalLinesRenderer->mMaxDepth << endl;
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| 147 |
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| 148 | globalLinesRenderer->ApplyDepthPeeling(rays, Beam(), 0);
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[1960] | 149 | CLEAR_CONTAINER(rays);
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[1958] | 150 | return;
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| 151 | }
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[1953] | 152 | case '3':
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[1958] | 153 | {
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| 154 | //globalLinesRenderer->ApplyDepthPeeling(Beam(), 0);
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| 155 | globalLinesRenderer->ExportDepthBuffer();
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[1960] | 156 |
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[1958] | 157 | return;
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| 158 | }
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| 159 | case '4':
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| 160 | {
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[1960] | 161 | //globalLinesRenderer->ApplyDepthPeeling(Beam(), 0);
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| 162 | globalLinesRenderer->ExportItemBuffer();
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| 163 |
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| 164 | return;
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| 165 | }
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| 166 | case '8':
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| 167 | {
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| 168 | isDepth = !isDepth;
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| 169 | return;
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| 170 | }
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| 171 | case '9':
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| 172 | {
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[1958] | 173 | VssRayContainer rays;
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[1960] | 174 | globalLinesRenderer->ApplyDepthPeeling(rays, Beam(), 0);
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| 175 | VssRayContainer outRays;
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| 176 | VssRayContainer::const_iterator vit, vit_end = rays.end();
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[1958] | 177 |
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[1960] | 178 | const float p = 8.0f / (float)rays.size();
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| 179 |
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| 180 | for (vit = rays.begin(); vit != vit_end; ++ vit)
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| 181 | {
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| 182 | if (Random(1.0f) < p)
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| 183 | {
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| 184 | outRays.push_back(*vit);
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | globalLinesRenderer->Visualize(rays);
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| 189 | CLEAR_CONTAINER(rays);
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| 190 | return;
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| 191 | }
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| 192 | case '0':
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| 193 | {
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| 194 | VssRayContainer rays;
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[1958] | 195 | globalLinesRenderer->ApplyDepthPeeling(rays, Beam(), 0);
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[1960] | 196 | CLEAR_CONTAINER(rays);
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[1958] | 197 | return;
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| 198 | }
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[1944] | 199 | default:
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| 200 | return;
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| 201 | }
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| 202 | }
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| 203 |
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[1953] | 204 |
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[1944] | 205 | /*GlobalLinesRenderer::GlobalLinesRenderer(RenderTexture *buffer1,
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| 206 | RenderTexture *buffer2,
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| 207 | Preprocessor *preprocessor,
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| 208 | GlRenderer *renderer)
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[1953] | 209 | : mNewTexture(buffer1), mOldTexture(buffer2), mPreprocessor(preprocessor), mMaxDepth(100),
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[1944] | 210 | mRenderer(renderer)
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| 211 | {
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| 212 | }
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| 213 | */
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[1953] | 214 |
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| 215 |
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[1949] | 216 | GlobalLinesRenderer::GlobalLinesRenderer(Preprocessor *preprocessor,
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| 217 | GlRenderer *renderer):
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[1953] | 218 | mNewTexture(NULL),
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| 219 | mOldTexture(NULL),
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[1949] | 220 | mMaxDepth(0),
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[1944] | 221 | mRenderer(renderer),
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| 222 | mPreprocessor(preprocessor)
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| 223 | {
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| 224 | }
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| 225 |
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| 226 |
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[1960] | 227 | void GlobalLinesRenderer::DisplayBuffer(const bool isDepth)
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[1958] | 228 | {
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[1960] | 229 | if (!isDepth)
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| 230 | mNewTexture->Bind();
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| 231 | else
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| 232 | mNewTexture->BindDepth();
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[1958] | 233 | mNewTexture->EnableTextureTarget();
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| 234 |
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| 235 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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| 236 |
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| 237 | if (mNewTexture->IsRectangleTexture())
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| 238 | {
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| 239 | glBegin(GL_QUADS);
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| 240 | glTexCoord2f(0, 0); glVertex3f(-1, -1, -0.5f);
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| 241 | glTexCoord2f(mNewTexture->GetWidth(), 0); glVertex3f( 1, -1, -0.5f);
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| 242 | glTexCoord2f(mNewTexture->GetWidth(), mNewTexture->GetHeight()); glVertex3f( 1, 1, -0.5f);
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| 243 | glTexCoord2f(0, mNewTexture->GetHeight()); glVertex3f(-1, 1, -0.5f);
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| 244 | glEnd();
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| 245 | }
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| 246 | else
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| 247 | {
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| 248 | glBegin(GL_QUADS);
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| 249 | glTexCoord2f(0, 0); glVertex3f(-1, -1, -0.5f);
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| 250 | glTexCoord2f(1, 0); glVertex3f( 1, -1, -0.5f);
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| 251 | glTexCoord2f(1, 1); glVertex3f( 1, 1, -0.5f);
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| 252 | glTexCoord2f(0, 1); glVertex3f(-1, 1, -0.5f);
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| 253 | glEnd();
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| 254 | }
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| 255 |
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| 256 | mNewTexture->DisableTextureTarget();
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| 257 | PrintGLerror("displaytexture");
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| 258 | }
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| 259 |
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| 260 |
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[1944] | 261 | GlobalLinesRenderer::~GlobalLinesRenderer()
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| 262 | {
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| 263 | if (sCgDepthPeelingProgram)
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| 264 | cgDestroyProgram(sCgDepthPeelingProgram);
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| 265 | if (sCgContext)
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| 266 | cgDestroyContext(sCgContext);
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[1958] | 267 |
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| 268 | // init the receiving buffers
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| 269 | delete mNewDepthBuffer;
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| 270 | delete mOldDepthBuffer;
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| 271 |
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| 272 | delete mNewItemBuffer;
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| 273 | delete mOldItemBuffer;
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[1944] | 274 | }
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| 275 |
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| 276 |
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| 277 | void GlobalLinesRenderer::CastGlobalLines(Beam &beam, const int samples)
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| 278 | {
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[1958] | 279 | VssRayContainer rays;
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| 280 |
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[1944] | 281 | // bind pixel shader implementing the front depth buffer functionality
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[1958] | 282 | ApplyDepthPeeling(rays, beam, samples);
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[1944] | 283 | }
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| 284 |
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| 285 |
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| 286 | void GlobalLinesRenderer::RenderObject(Intersectable *obj)
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| 287 | {
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| 288 | mRenderer->RenderIntersectable(obj);
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| 289 | }
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| 290 |
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| 291 |
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| 292 | void GlobalLinesRenderer::DrawGeometry()
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[1945] | 293 | {
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[1951] | 294 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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| 295 | glMatrixMode(GL_MODELVIEW);
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[1944] | 296 |
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[1951] | 297 | glPushMatrix();
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| 298 | {
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[1953] | 299 | //glLoadIdentity();
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[1951] | 300 | ObjectContainer::const_iterator oit, oit_end = mPreprocessor->mObjects.end();
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| 301 |
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| 302 | Intersectable::NewMail();
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| 303 |
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| 304 | for (oit = mPreprocessor->mObjects.begin(); oit != oit_end; ++ oit)
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| 305 | {
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[1960] | 306 | cout << (*oit)->GetId() << " ";
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[1951] | 307 | RenderObject(*oit);
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| 308 | }
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[1944] | 309 | }
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[1951] | 310 | glPopMatrix();
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[1944] | 311 | }
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| 312 |
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| 313 |
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| 314 | void GlobalLinesRenderer::SwitchRenderTextures()
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| 315 | {
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[1953] | 316 | RenderTexture *buffer = mOldTexture;
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| 317 | mOldTexture = mNewTexture;
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| 318 | mNewTexture = buffer;
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[1944] | 319 | }
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| 320 |
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| 321 |
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[1958] | 322 | void GlobalLinesRenderer::ComputeLookAt(const float alpha,
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| 323 | const float beta,
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| 324 | Vector3 &eye,
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| 325 | Vector3 &up,
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| 326 | Vector3 left)
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| 327 | {
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| 328 | //float x = cos(alpha);
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| 329 | //float y = sin(alpha);
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| 330 | eye.x = sin(alpha) * cos(beta);
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| 331 | eye.y = sin(alpha) * sin(beta);
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| 332 | eye.z = cos(beta);
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| 333 |
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| 334 | eye.RightHandedBase(up, left);
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| 335 | }
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| 336 |
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| 337 |
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[1944] | 338 | void GlobalLinesRenderer::InitGl()
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| 339 | {
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[1953] | 340 | InitDevIl();
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| 341 |
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[1960] | 342 | glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
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[1944] | 343 | glutInitWindowPosition(50, 50);
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| 344 | glutInitWindowSize(512, 512);
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| 345 | glutCreateWindow("TestRenderDepthTexture");
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| 346 |
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| 347 | int err = glewInit();
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| 348 | if (GLEW_OK != err)
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| 349 | {
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| 350 | // problem: glewInit failed, something is seriously wrong
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| 351 | fprintf(stderr, "GLEW Error: %s\n", glewGetErrorString(err));
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| 352 | exit(-1);
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| 353 | }
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| 354 |
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| 355 | glutKeyboardFunc(Keyboard);
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| 356 | glutDisplayFunc(Display);
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| 357 | glutIdleFunc(Idle);
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| 358 | glutReshapeFunc(Reshape);
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| 359 |
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| 360 | Reshape(512, 512);
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| 361 | glMatrixMode(GL_MODELVIEW);
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| 362 | glLoadIdentity();
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| 363 |
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[1958] | 364 | // initialise the receiving buffers
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[1954] | 365 | mNewDepthBuffer = new float[texWidth * texHeight];
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[1960] | 366 | mNewItemBuffer = new unsigned char[texWidth * texHeight * 4];
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| 367 |
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[1954] | 368 | mOldDepthBuffer = new float[texWidth * texHeight];
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[1960] | 369 | mOldItemBuffer = new unsigned char[texWidth * texHeight * 4];
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| 370 |
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[1958] | 371 | for (int i = 0; i < texWidth * texHeight; ++ i)
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| 372 | {
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| 373 | mNewDepthBuffer[i] = 1;
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| 374 | mOldDepthBuffer[i] = 1;
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| 375 |
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[1960] | 376 | mNewItemBuffer[i * 4] = 255;
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| 377 | mNewItemBuffer[i * 4 + 1] = 255;
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| 378 | mNewItemBuffer[i * 4 + 2] = 255;
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| 379 | mNewItemBuffer[i * 4 + 3] = 255;
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| 380 |
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| 381 | mOldItemBuffer[i * 4] = 255;
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| 382 | mOldItemBuffer[i * 4 + 1] = 255;
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| 383 | mOldItemBuffer[i * 4 + 2] = 255;
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| 384 | mOldItemBuffer[i * 4 + 3] = 255;
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[1958] | 385 | }
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| 386 |
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[1944] | 387 | AxisAlignedBox3 bbox = globalLinesRenderer->mPreprocessor->mKdTree->GetBox();
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[1951] | 388 |
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[1960] | 389 | Vector3 midPoint = bbox.Center();
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[1953] | 390 |
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| 391 | const float sceneSize = Magnitude(bbox.Diagonal());
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[1960] | 392 | mViewPoint = midPoint + Vector3(0.5 * sceneSize, 0, 0);
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[1953] | 393 |
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[1960] | 394 | cout << "mid point: " << midPoint << endl;
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| 395 | cout << "view point: " << mViewPoint << endl;
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[1944] | 396 | cout << "scene: " << bbox << endl;
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| 397 |
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[1960] | 398 | mNear = 1;
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| 399 | mFar = sceneSize;
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| 400 | mWidth = sceneSize;
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| 401 |
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| 402 | mEyeVec = Normalize(midPoint - mViewPoint);
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[1958] | 403 | mEyeVec.RightHandedBase(mUpVec, mLeftVec);
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| 404 |
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[1960] | 405 | /*gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
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[1944] | 406 | midPoint.x, midPoint.y, midPoint.z,
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| 407 | 0, 1, 0);
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| 408 | */
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| 409 | gluLookAt(0, 0, 3, 0, 0, 0, 0, 1, 0);
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| 410 |
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[1949] | 411 | //glDisable(GL_CULL_FACE);
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| 412 | glEnable(GL_CULL_FACE);
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[1944] | 413 | glDisable(GL_LIGHTING);
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| 414 | glDisable(GL_COLOR_MATERIAL);
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| 415 | glEnable(GL_DEPTH_TEST);
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| 416 | glClearColor(0.1, 0.2, 0.3, 1);
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| 417 |
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| 418 | // A square, mipmapped, anisotropically filtered 8-bit RGBA texture with
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| 419 | // depth and stencil.
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| 420 | // Note that RT_COPY_TO_TEXTURE is required for depth textures on ATI hardware
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| 421 |
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[1953] | 422 | mNewTexture = new RenderTexture(texWidth, texHeight, true, true);
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| 423 | //mNewTexture->Initialize(true, true, false, true, true, 8, 8, 8, 8);//, RenderTexture::RT_COPY_TO_TEXTURE);
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| 424 | mNewTexture->Initialize(true, true, false, true, true, 8, 8, 8, 8, RenderTexture::RT_COPY_TO_TEXTURE);
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[1949] | 425 |
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[1953] | 426 | mOldTexture = new RenderTexture(texWidth, texHeight, true, true);
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| 427 | //mOldTexture ->Initialize(true, true, false, true, true, 8, 8, 8, 8);//, RenderTexture::RT_COPY_TO_TEXTURE);
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| 428 | mOldTexture ->Initialize(true, true, false, true, true, 8, 8, 8, 8, RenderTexture::RT_COPY_TO_TEXTURE);
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[1944] | 429 |
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| 430 | // Setup Cg
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| 431 | cgSetErrorCallback(cgErrorCallback);
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| 432 |
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| 433 | // Create cgContext.
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| 434 | sCgContext = cgCreateContext();
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| 435 |
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| 436 | // get the best profile for this hardware
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| 437 | sCgFragmentProfile = cgGLGetLatestProfile(CG_GL_FRAGMENT);
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| 438 |
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| 439 | //assert(sCgFragmentProfile != CG_PROFILE_UNKNOWN);
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| 440 | cgGLSetOptimalOptions(sCgFragmentProfile);
|
---|
| 441 |
|
---|
| 442 | sCgDepthPeelingProgram =
|
---|
| 443 | cgCreateProgramFromFile(sCgContext,
|
---|
| 444 | CG_SOURCE,
|
---|
[1953] | 445 | mNewTexture->IsRectangleTexture() ?
|
---|
[1951] | 446 | "../src/depth_peelingRect.cg" : "../src/depth_peeling2d.cg",
|
---|
[1944] | 447 | GLEW_ARB_fragment_program ? CG_PROFILE_ARBFP1 : CG_PROFILE_FP30,
|
---|
| 448 | NULL,
|
---|
| 449 | NULL);
|
---|
| 450 |
|
---|
| 451 | if(sCgDepthPeelingProgram != NULL)
|
---|
| 452 | {
|
---|
| 453 | cgGLLoadProgram(sCgDepthPeelingProgram);
|
---|
| 454 | sTextureParam = cgGetNamedParameter(sCgDepthPeelingProgram, "depthTex");
|
---|
| 455 | }
|
---|
| 456 |
|
---|
| 457 | sCgPassThroughProgram =
|
---|
| 458 | cgCreateProgramFromFile(sCgContext,
|
---|
| 459 | CG_SOURCE,
|
---|
| 460 | "../src/passthrough.cg",
|
---|
| 461 | GLEW_ARB_fragment_program ? CG_PROFILE_ARBFP1 : CG_PROFILE_FP30,
|
---|
| 462 | NULL,
|
---|
| 463 | NULL);
|
---|
| 464 |
|
---|
| 465 | if(sCgPassThroughProgram != NULL)
|
---|
| 466 | {
|
---|
| 467 | cgGLLoadProgram(sCgPassThroughProgram);
|
---|
| 468 | }
|
---|
| 469 |
|
---|
| 470 | // setup the rendering context for the RenderTexture
|
---|
[1953] | 471 | mNewTexture->BeginCapture();
|
---|
[1944] | 472 | {
|
---|
[1953] | 473 | //Reshape(texWidth, texHeight);
|
---|
| 474 | glViewport(0, 0, texWidth, texHeight);
|
---|
[1960] | 475 | SetFrustum(mWidth, mWidth, mNear, mFar);
|
---|
[1953] | 476 |
|
---|
[1958] | 477 | // for item buffer: white means no color
|
---|
| 478 | glClearColor(1, 1, 1, 1);
|
---|
[1944] | 479 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
[1949] | 480 |
|
---|
| 481 | glFrontFace(GL_CCW);
|
---|
| 482 | glCullFace(GL_BACK);
|
---|
[1960] | 483 |
|
---|
| 484 | glDisable(GL_CULL_FACE);
|
---|
| 485 | //glEnable(GL_CULL_FACE);
|
---|
| 486 |
|
---|
[1949] | 487 | glShadeModel(GL_FLAT);
|
---|
| 488 | glEnable(GL_DEPTH_TEST);
|
---|
| 489 |
|
---|
[1944] | 490 | glMatrixMode(GL_MODELVIEW);
|
---|
| 491 | glLoadIdentity();
|
---|
[1960] | 492 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
|
---|
| 493 | midPoint.x, midPoint.y, midPoint.z,
|
---|
[1944] | 494 | 0, 1, 0);
|
---|
[1953] | 495 |
|
---|
[1944] | 496 | }
|
---|
[1953] | 497 | mNewTexture->EndCapture();
|
---|
[1944] | 498 |
|
---|
[1958] | 499 | // setup the rendering context for the other depth buffer
|
---|
[1953] | 500 | mOldTexture->BeginCapture();
|
---|
[1944] | 501 | {
|
---|
[1958] | 502 | // for item buffer: white means no color
|
---|
| 503 | glClearColor(1, 1, 1, 1);
|
---|
[1953] | 504 |
|
---|
| 505 | //Reshape(texWidth, texHeight);
|
---|
| 506 | glViewport(0, 0, texWidth, texHeight);
|
---|
[1960] | 507 | SetFrustum(mWidth, mWidth, mNear, mFar);
|
---|
[1953] | 508 |
|
---|
[1944] | 509 | glMatrixMode(GL_MODELVIEW);
|
---|
| 510 | glLoadIdentity();
|
---|
[1949] | 511 |
|
---|
| 512 | glFrontFace(GL_CCW);
|
---|
| 513 | glCullFace(GL_BACK);
|
---|
[1960] | 514 |
|
---|
| 515 | glDisable(GL_CULL_FACE);
|
---|
| 516 | //glEnable(GL_CULL_FACE);
|
---|
| 517 |
|
---|
[1949] | 518 | glShadeModel(GL_FLAT);
|
---|
| 519 | glEnable(GL_DEPTH_TEST);
|
---|
| 520 |
|
---|
[1960] | 521 | gluLookAt(mViewPoint.x, mViewPoint.y, mViewPoint.z,
|
---|
| 522 | midPoint.x, midPoint.y, midPoint.z,
|
---|
[1944] | 523 | 0, 1, 0);
|
---|
| 524 |
|
---|
[1953] | 525 | //SetFrustum(sceneSize, sceneSize, 1, sceneSize);
|
---|
[1944] | 526 | }
|
---|
[1953] | 527 | mOldTexture->EndCapture();
|
---|
[1944] | 528 |
|
---|
| 529 | PrintGLerror("init");
|
---|
| 530 | }
|
---|
| 531 |
|
---|
| 532 |
|
---|
[1960] | 533 | Intersectable *GlobalLinesRenderer::ExtractSamplePoint(float *depthBuffer,
|
---|
| 534 | unsigned char *itemBuffer,
|
---|
| 535 | const int x,
|
---|
| 536 | const int y,
|
---|
| 537 | Vector3 &hitPoint,
|
---|
| 538 | const bool isFrontBuffer) const
|
---|
[1944] | 539 | {
|
---|
[1960] | 540 | const int depthIndex = x + texWidth * y;
|
---|
| 541 | const int itemIndex = 4 * depthIndex;
|
---|
| 542 |
|
---|
| 543 | const float depth = depthBuffer[depthIndex];
|
---|
| 544 | const float eyeDist = mNear + (mFar - mNear) * depth;
|
---|
| 545 |
|
---|
| 546 | const float leftDist = 0.5f * mWidth - mWidth * ((float)x + 0.5f) / texWidth;
|
---|
| 547 | //const float upDist = 0.5f * mWidth - (float)mWidth * ((float)y + 0.5f) / texHeight;
|
---|
| 548 | const float upDist = -0.5f * mWidth + mWidth * ((float)y + 0.5f) / texHeight;
|
---|
| 549 |
|
---|
| 550 | hitPoint = mViewPoint +
|
---|
| 551 | eyeDist * mEyeVec +
|
---|
| 552 | leftDist * mUpVec +
|
---|
| 553 | upDist * mLeftVec;
|
---|
| 554 |
|
---|
| 555 | unsigned char r = itemBuffer[itemIndex];
|
---|
| 556 | unsigned char g = itemBuffer[itemIndex + 1];
|
---|
| 557 | unsigned char b = itemBuffer[itemIndex + 2];
|
---|
| 558 |
|
---|
| 559 | // 3 times 255 means no valid object
|
---|
| 560 | if ((r == 255) && (g == 255) && (b == 255))
|
---|
| 561 | return NULL;
|
---|
| 562 |
|
---|
| 563 | const int id = mRenderer->GetId(r, g, b);
|
---|
| 564 | //cout << "r: " << (int)r << "g: " << (int)g << " b: " << (int)b << " id: " << id << "|";
|
---|
| 565 | Intersectable *intersect = mPreprocessor->GetObjectById(id);
|
---|
| 566 |
|
---|
| 567 | const Vector3 dir = isFrontBuffer ? mEyeVec : -mEyeVec;
|
---|
| 568 | // HACK: assume triangle intersectable
|
---|
| 569 | const Vector3 norm = intersect->GetNormal(0);
|
---|
| 570 |
|
---|
[1961] | 571 | // test for invalid view space
|
---|
| 572 | if (DotProd(dir, norm) >= -Limits::Small)
|
---|
| 573 | return NULL;
|
---|
| 574 |
|
---|
| 575 | return intersect;
|
---|
[1944] | 576 | }
|
---|
| 577 |
|
---|
| 578 |
|
---|
[1960] | 579 | void GlobalLinesRenderer::ProcessDepthBuffer(VssRayContainer &vssRays,
|
---|
| 580 | const bool oldBufferInitialised)
|
---|
[1953] | 581 | {
|
---|
| 582 | GrabDepthBuffer(mNewDepthBuffer, mNewTexture);
|
---|
| 583 | GrabItemBuffer(mNewItemBuffer, mNewTexture);
|
---|
| 584 |
|
---|
[1960] | 585 | if (oldBufferInitialised)
|
---|
[1953] | 586 | {
|
---|
[1960] | 587 | GrabDepthBuffer(mOldDepthBuffer, mOldTexture);
|
---|
| 588 | GrabItemBuffer(mOldItemBuffer, mOldTexture);
|
---|
| 589 | }
|
---|
| 590 | else
|
---|
| 591 | {
|
---|
| 592 | for (int i = 0; i < texWidth * texHeight; ++ i)
|
---|
[1953] | 593 | {
|
---|
[1960] | 594 | mOldDepthBuffer[i] = 0;
|
---|
[1953] | 595 |
|
---|
[1960] | 596 | mOldItemBuffer[i * 4] = 255;
|
---|
| 597 | mOldItemBuffer[i * 4 + 1] = 255;
|
---|
| 598 | mOldItemBuffer[i * 4 + 2] = 255;
|
---|
| 599 | mOldItemBuffer[i * 4 + 3] = 255;
|
---|
| 600 | }
|
---|
| 601 | }
|
---|
[1953] | 602 |
|
---|
[1960] | 603 | cout << "vp: " << "eye: " << mEyeVec << " left: " << mLeftVec << " up: " << mUpVec << endl;
|
---|
[1953] | 604 |
|
---|
[1960] | 605 | for (int y = 0; y < texHeight; ++ y)
|
---|
| 606 | {
|
---|
| 607 | for (int x = 0; x < texWidth; ++ x)
|
---|
| 608 | {
|
---|
| 609 | Vector3 newPt, oldPt;
|
---|
[1953] | 610 |
|
---|
[1960] | 611 | Intersectable *termObj1 = ExtractSamplePoint(mNewDepthBuffer,
|
---|
| 612 | mNewItemBuffer,
|
---|
| 613 | x,
|
---|
| 614 | y,
|
---|
| 615 | newPt,
|
---|
| 616 | true);
|
---|
[1953] | 617 |
|
---|
[1960] | 618 | Intersectable *termObj2 = ExtractSamplePoint(mOldDepthBuffer,
|
---|
| 619 | mOldItemBuffer,
|
---|
| 620 | x,
|
---|
| 621 | y,
|
---|
| 622 | oldPt,
|
---|
| 623 | false);
|
---|
[1953] | 624 |
|
---|
[1960] | 625 | // create rays in both directions
|
---|
| 626 | if (termObj1)
|
---|
[1958] | 627 | {
|
---|
[1960] | 628 | vssRays.push_back(new VssRay(oldPt, newPt, NULL, termObj1));
|
---|
| 629 | //cout << "new pt: " << newPt << endl;
|
---|
[1958] | 630 | }
|
---|
| 631 |
|
---|
[1961] | 632 | if (termObj2)
|
---|
| 633 | {
|
---|
| 634 | vssRays.push_back(new VssRay(newPt, oldPt, NULL, termObj2));
|
---|
| 635 | //cout << "old pt: " << oldPt << endl;
|
---|
| 636 | }
|
---|
[1953] | 637 | }
|
---|
| 638 | }
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 |
|
---|
[1944] | 642 | void GlobalLinesRenderer::Run()
|
---|
| 643 | {
|
---|
| 644 | glutMainLoop();
|
---|
| 645 | }
|
---|
| 646 |
|
---|
| 647 |
|
---|
[1960] | 648 | void SetupFalseColor(const unsigned int id,
|
---|
| 649 | unsigned char &r,
|
---|
| 650 | unsigned char &g,
|
---|
| 651 | unsigned char &b
|
---|
| 652 | )
|
---|
| 653 | {
|
---|
| 654 | // swap bits of the color
|
---|
| 655 | r = id & 255;
|
---|
| 656 | g = (id >> 8) & 255;
|
---|
| 657 | b = (id >> 16) & 255;
|
---|
| 658 | }
|
---|
| 659 |
|
---|
| 660 |
|
---|
| 661 | void GlobalLinesRenderer::Visualize(const VssRayContainer &vssRays)
|
---|
| 662 | {
|
---|
| 663 | Exporter *exporter = Exporter::GetExporter("globalLines.wrl");
|
---|
| 664 |
|
---|
| 665 | if (!exporter)
|
---|
| 666 | return;
|
---|
| 667 |
|
---|
| 668 | exporter->SetWireframe();
|
---|
| 669 | //exporter->ExportGeometry(preprocessor->mObjects);
|
---|
| 670 | exporter->SetFilled();
|
---|
| 671 |
|
---|
| 672 | VssRayContainer::const_iterator vit, vit_end = vssRays.end();
|
---|
| 673 |
|
---|
| 674 | for (vit = vssRays.begin(); vit != vit_end; ++ vit)
|
---|
| 675 | {
|
---|
| 676 | VssRay *ray = *vit;
|
---|
| 677 | Intersectable *obj = (*vit)->mTerminationObject;
|
---|
| 678 | exporter->ExportIntersectable(obj);
|
---|
| 679 | }
|
---|
| 680 |
|
---|
[1961] | 681 | // exporter->ExportRays(vssRays);
|
---|
[1960] | 682 |
|
---|
| 683 | delete exporter;
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 |
|
---|
[1953] | 687 | void GlobalLinesRenderer::GrabDepthBuffer(float *data, RenderTexture *rt)
|
---|
| 688 | {
|
---|
| 689 | rt->BindDepth();
|
---|
| 690 | rt->EnableTextureTarget();
|
---|
| 691 | cout << "depth: " << mNewTexture->GetDepthBits() << endl;
|
---|
| 692 |
|
---|
| 693 | const int texFormat = GL_DEPTH_COMPONENT;
|
---|
| 694 | glGetTexImage(mNewTexture->GetTextureTarget(), 0, texFormat, GL_FLOAT, data);
|
---|
| 695 |
|
---|
| 696 | mNewTexture->DisableTextureTarget();
|
---|
| 697 | }
|
---|
| 698 |
|
---|
| 699 |
|
---|
[1960] | 700 | void GlobalLinesRenderer::GrabItemBuffer(unsigned char *data, RenderTexture *rt)
|
---|
[1953] | 701 | {
|
---|
[1958] | 702 | rt->Bind();
|
---|
[1953] | 703 | rt->EnableTextureTarget();
|
---|
[1958] | 704 | //cout << "depth: " << mNewTexture->GetDepthBits() << endl;
|
---|
[1953] | 705 |
|
---|
[1958] | 706 | const int texFormat = GL_RGBA;
|
---|
[1960] | 707 | glGetTexImage(mNewTexture->GetTextureTarget(), 0, texFormat, GL_UNSIGNED_BYTE, data);
|
---|
[1953] | 708 |
|
---|
| 709 | mNewTexture->DisableTextureTarget();
|
---|
| 710 | }
|
---|
| 711 |
|
---|
[1958] | 712 |
|
---|
[1953] | 713 | void GlobalLinesRenderer::ExportDepthBuffer()
|
---|
| 714 | {
|
---|
| 715 | mNewTexture->BindDepth();
|
---|
| 716 | mNewTexture->EnableTextureTarget();
|
---|
| 717 | cout << "depth: " << mNewTexture->GetDepthBits() << endl;
|
---|
| 718 |
|
---|
[1960] | 719 | const int components = 1;//mNewTexture->GetDepthBits() / 8;
|
---|
[1953] | 720 |
|
---|
| 721 | float *data = new float[texWidth * texHeight * components];
|
---|
| 722 | //const int texFormat = WGL_TEXTURE_DEPTH_COMPONENT_NV;
|
---|
| 723 | const int texFormat = GL_DEPTH_COMPONENT;
|
---|
| 724 | //const int texFormat = GL_RGBA;
|
---|
| 725 | glGetTexImage(mNewTexture->GetTextureTarget(), 0, texFormat, GL_FLOAT, data);
|
---|
| 726 |
|
---|
| 727 | /*for (int i = texWidth * 123; i < texWidth * 124; ++ i)
|
---|
| 728 | {
|
---|
| 729 | cout << data[i] << " ";
|
---|
| 730 | }
|
---|
| 731 | cout << "Saving image " << texWidth << " " << texHeight << endl;
|
---|
| 732 | */
|
---|
| 733 | string filename("depth.tga");
|
---|
| 734 | ilRegisterType(IL_FLOAT);
|
---|
| 735 |
|
---|
| 736 | const int depth = 1;
|
---|
| 737 | const int bpp = components;
|
---|
| 738 |
|
---|
| 739 | ilTexImage(texWidth, texHeight, depth, bpp, IL_LUMINANCE, IL_FLOAT, data);
|
---|
| 740 | ilSaveImage((char *const)filename.c_str());
|
---|
| 741 |
|
---|
| 742 | cout << "finished" << endl;
|
---|
| 743 | delete data;
|
---|
| 744 | cout << "data deleted" << endl;
|
---|
| 745 | mNewTexture->DisableTextureTarget();
|
---|
| 746 | PrintGLerror("grab texture");
|
---|
| 747 | }
|
---|
| 748 |
|
---|
[1958] | 749 | /*
|
---|
| 750 | void GlobalLinesRenderer::ExportItemBuffer()
|
---|
[1944] | 751 | {
|
---|
[1960] | 752 | mNewTexture->Bind();
|
---|
[1958] | 753 | mNewTexture->EnableTextureTarget();
|
---|
| 754 | cout << "depth: " << mNewTexture->GetDepthBits() << endl;
|
---|
| 755 |
|
---|
[1960] | 756 | const int components = 4;//mNewTexture->GetDepthBits() / 8;
|
---|
[1958] | 757 |
|
---|
[1960] | 758 | float *data = new float[texWidth * texHeight * components*8];
|
---|
| 759 | const int texFormat = GL_RGBA;
|
---|
[1958] | 760 | glGetTexImage(mNewTexture->GetTextureTarget(), 0, texFormat, GL_FLOAT, data);
|
---|
| 761 |
|
---|
[1960] | 762 | string filename("items.tga");
|
---|
[1958] | 763 | ilRegisterType(IL_FLOAT);
|
---|
| 764 |
|
---|
| 765 | const int depth = 1;
|
---|
| 766 | const int bpp = components;
|
---|
| 767 |
|
---|
[1960] | 768 | cout << "saving items to file " << endl;
|
---|
| 769 |
|
---|
| 770 | ilTexImage(16, 16, depth, bpp, IL_RGBA, IL_FLOAT, data);
|
---|
[1958] | 771 | ilSaveImage((char *const)filename.c_str());
|
---|
| 772 |
|
---|
| 773 | cout << "finished" << endl;
|
---|
| 774 | delete data;
|
---|
| 775 | cout << "data deleted" << endl;
|
---|
| 776 | mNewTexture->DisableTextureTarget();
|
---|
| 777 | PrintGLerror("grab texture");
|
---|
| 778 | }
|
---|
| 779 | */
|
---|
[1960] | 780 | void GlobalLinesRenderer::ExportItemBuffer()
|
---|
| 781 | {
|
---|
| 782 | mNewTexture->Bind();
|
---|
| 783 | mNewTexture->EnableTextureTarget();
|
---|
| 784 | cout << "depth: " << mNewTexture->GetDepthBits() << endl;
|
---|
[1958] | 785 |
|
---|
[1960] | 786 | const int components = 4;//mNewTexture->GetDepthBits() / 8;
|
---|
[1958] | 787 |
|
---|
[1960] | 788 | unsigned char *data = new unsigned char [texWidth * texHeight * components];
|
---|
| 789 | //const int texFormat = WGL_TEXTURE_DEPTH_COMPONENT_NV;
|
---|
| 790 | const int texFormat = GL_RGBA;
|
---|
| 791 | glGetTexImage(mNewTexture->GetTextureTarget(), 0, texFormat, GL_UNSIGNED_BYTE, data);
|
---|
| 792 |
|
---|
| 793 | string filename("items.jpg");
|
---|
| 794 | ilRegisterType(IL_UNSIGNED_BYTE);
|
---|
| 795 |
|
---|
| 796 | const int depth = 1;
|
---|
| 797 | const int bpp = components;
|
---|
| 798 |
|
---|
| 799 | ilTexImage(texWidth, texHeight, depth, bpp, IL_RGBA, IL_UNSIGNED_BYTE, data);
|
---|
| 800 | ilSaveImage((char *const)filename.c_str());
|
---|
| 801 |
|
---|
| 802 | cout << "finished" << endl;
|
---|
| 803 | delete data;
|
---|
| 804 | cout << "data deleted" << endl;
|
---|
| 805 | mNewTexture->DisableTextureTarget();
|
---|
| 806 | PrintGLerror("grab texture");
|
---|
| 807 | }
|
---|
| 808 |
|
---|
| 809 |
|
---|
[1958] | 810 | void GlobalLinesRenderer::ApplyDepthPeeling(VssRayContainer &rays,
|
---|
| 811 | Beam &beam,
|
---|
| 812 | const int samples)
|
---|
| 813 | {
|
---|
[1953] | 814 | mNewTexture->BeginCapture();
|
---|
[1944] | 815 | {
|
---|
| 816 | //cgGLBindProgram(sCgPassThroughProgram);
|
---|
| 817 | //cgGLEnableProfile(sCgFragmentProfile);
|
---|
[1951] | 818 | DrawGeometry();
|
---|
[1944] | 819 | }
|
---|
[1953] | 820 | mNewTexture->EndCapture();
|
---|
[1944] | 821 |
|
---|
[1951] | 822 | PrintGLerror("firstpass");
|
---|
[1953] | 823 | if (mNewTexture->IsRectangleTexture()) cout << "rect" << endl;
|
---|
[1944] | 824 |
|
---|
[1958] | 825 | // process the buffers for the first layer
|
---|
[1960] | 826 | ProcessDepthBuffer(rays, false);
|
---|
[1958] | 827 |
|
---|
[1949] | 828 | for(int i = 0; i < mMaxDepth; ++ i)
|
---|
[1944] | 829 | {
|
---|
| 830 | // Peel another layer
|
---|
| 831 | SwitchRenderTextures(); // switch pointer between rendertextures
|
---|
| 832 |
|
---|
[1953] | 833 | mNewTexture->BeginCapture();
|
---|
[1944] | 834 | {
|
---|
[1953] | 835 | //if (mNewTexture->IsDoubleBuffered())
|
---|
[1944] | 836 | // glDrawBuffer(GL_BACK);
|
---|
| 837 |
|
---|
| 838 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
---|
| 839 |
|
---|
| 840 | cgGLBindProgram(sCgDepthPeelingProgram);
|
---|
| 841 | cgGLEnableProfile(sCgFragmentProfile);
|
---|
[1953] | 842 | cgGLSetTextureParameter(sTextureParam, mOldTexture->GetDepthTextureID());
|
---|
[1944] | 843 | cgGLEnableTextureParameter(sTextureParam);
|
---|
| 844 |
|
---|
[1951] | 845 | //glutSolidTorus(0.25, 1, 32, 64);
|
---|
| 846 | DrawGeometry();
|
---|
| 847 |
|
---|
[1949] | 848 | glPopMatrix();
|
---|
| 849 |
|
---|
[1944] | 850 | cgGLDisableTextureParameter(sTextureParam);
|
---|
[1949] | 851 | cgGLDisableProfile(sCgFragmentProfile);
|
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[1944] | 852 | }
|
---|
[1953] | 853 | mNewTexture->EndCapture();
|
---|
[1960] | 854 |
|
---|
| 855 | // process the buffers for following layer
|
---|
| 856 | ProcessDepthBuffer(rays, true);
|
---|
[1944] | 857 | }
|
---|
| 858 |
|
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[1951] | 859 | PrintGLerror("endpeeling");
|
---|
[1944] | 860 | }
|
---|
| 861 |
|
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| 862 |
|
---|
| 863 | }
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