1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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4 | * |
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5 | */ |
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6 | #include "nvconf.h" |
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7 | |
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8 | #include <time.h> |
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9 | #include <stdlib.h> |
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10 | #include <stdio.h> |
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11 | #include <math.h> |
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12 | #include <pthread.h> |
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13 | |
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14 | #include <GL/glew.h> |
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15 | #include <Cg/cgGL.h> |
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16 | |
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17 | #include <util/FilePath.h> |
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18 | |
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19 | #include <Image.h> |
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20 | #include <ImageLoader.h> |
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21 | #include <ImageLoaderFactory.h> |
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22 | |
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23 | #include <vrmath/Matrix4x4d.h> |
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24 | #include <vrmath/Vector3f.h> |
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25 | #include <vrmath/Vector4f.h> |
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26 | |
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27 | #include "ParticleSystem.h" |
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28 | #include "ParticleEmitter.h" |
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29 | #include "Texture2D.h" |
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30 | #include "Texture3D.h" |
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31 | #include "Shader.h" |
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32 | #include "Trace.h" |
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33 | |
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34 | using namespace nv; |
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35 | using namespace nv::util; |
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36 | |
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37 | #define USE_RGBA_ARROW |
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38 | |
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39 | //#define TEST |
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40 | |
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41 | inline float randomRange(float rangeMin, float rangeMax) |
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42 | { |
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43 | return ((float)rand() / RAND_MAX) * (rangeMax - rangeMin) + rangeMin ; |
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44 | } |
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45 | |
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46 | inline int logd(int value) |
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47 | { |
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48 | int l; |
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49 | for (l = 0; value >> l; l++); |
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50 | return l - 1; |
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51 | } |
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52 | |
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53 | inline void swap(int& x, int& y) |
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54 | { |
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55 | if (x != y) { |
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56 | x ^= y; |
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57 | y ^= x; |
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58 | x ^= y; |
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59 | } |
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60 | } |
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61 | |
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62 | void *ParticleSystem::dataLoadMain(void *data) |
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63 | { |
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64 | ParticleSystem *particleSystem = (ParticleSystem *)data; |
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65 | CircularFifo<float*, 10>& queue = particleSystem->_queue; |
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66 | |
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67 | // TBD.. |
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68 | //float min = particleSystem->_time_series_vel_mag_min; |
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69 | //float max = particleSystem->_time_series_vel_mag_max; |
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70 | |
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71 | int startIndex = particleSystem->_flowFileStartIndex; |
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72 | int endIndex = particleSystem->_flowFileEndIndex; |
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73 | |
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74 | int curIndex = startIndex; |
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75 | int flowWidth = particleSystem->_flowWidth; |
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76 | int flowHeight = particleSystem->_flowHeight; |
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77 | int flowDepth = particleSystem->_flowDepth; |
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78 | |
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79 | const char* fileNameFormat = particleSystem->_fileNameFormat.c_str(); |
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80 | char buff[256]; |
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81 | |
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82 | bool done = false; |
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83 | while (!done) { |
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84 | if (curIndex > endIndex) { |
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85 | curIndex = startIndex; |
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86 | } |
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87 | |
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88 | if (!queue.isFull()) { |
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89 | int tail = queue.tailIndex(); |
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90 | if (tail != -1) { |
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91 | sprintf(buff, fileNameFormat, curIndex); |
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92 | //std::string path = FilePath::getInstance()->getPath(buff); |
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93 | #ifdef WANT_TRACE |
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94 | float t = clock() /(float) CLOCKS_PER_SEC; |
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95 | #endif |
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96 | LoadProcessedFlowRaw(buff, flowWidth, flowHeight, flowDepth, queue.array[tail]); |
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97 | #ifdef WANT_TRACE |
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98 | float ti = clock() / (float) CLOCKS_PER_SEC; |
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99 | TRACE("LoadProcessedFlowRaw time: %f", ti - t); |
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100 | #endif |
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101 | queue.push(); |
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102 | TRACE("%d loaded", curIndex); |
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103 | ++curIndex; |
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104 | } |
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105 | } |
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106 | } |
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107 | |
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108 | return 0; |
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109 | } |
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110 | |
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111 | CGcontext ParticleSystem::_context = 0; |
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112 | |
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113 | unsigned int SpotTexID = 0; |
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114 | |
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115 | void MakeSphereTexture() |
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116 | { |
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117 | const int DIM = 128; |
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118 | const int DIM2 = 63; |
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119 | //const float TEX_SCALE = 6.0; |
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120 | |
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121 | glGenTextures(1, (GLuint *)&SpotTexID); |
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122 | glBindTexture(GL_TEXTURE_2D, SpotTexID); |
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123 | |
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124 | float col[4] = {1.f, 1.f, 1.f, 1.f}; |
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125 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, col); |
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126 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
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127 | |
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128 | float *img = new float[DIM*DIM]; |
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129 | |
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130 | vrmath::Vector3f light(1,1,3); |
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131 | light = light.normalize(); |
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132 | |
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133 | for (int y = 0; y < DIM; y++) { |
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134 | for (int x = 0; x < DIM; x++) { |
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135 | // Clamping the edges to zero allows Nvidia's blend optimizations to do their thing. |
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136 | if (x == 0 || x == DIM-1 || y == 0 || y == DIM-1) { |
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137 | img[y*DIM+x] = 0; |
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138 | } else { |
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139 | vrmath::Vector3f p(x, y, 0); |
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140 | p = p - vrmath::Vector3f(DIM2, DIM2, 0); |
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141 | float len = p.length(); |
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142 | float z = sqrt(DIM2*DIM2 - len*len); |
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143 | p.z = z; |
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144 | if (len >= DIM2) { |
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145 | img[y*DIM+x] = 0.0; |
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146 | continue; |
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147 | } |
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148 | |
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149 | p = p.normalize(); |
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150 | float v = p.dot(light); |
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151 | if(v < 0) v = 0; |
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152 | |
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153 | img[y*DIM+x] = v; |
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154 | } |
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155 | } |
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156 | } |
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157 | |
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158 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
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159 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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160 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
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161 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
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162 | |
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163 | gluBuild2DMipmaps(GL_TEXTURE_2D, GL_ALPHA16, DIM, DIM, GL_ALPHA, GL_FLOAT, img); |
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164 | } |
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165 | |
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166 | //extern void algorithm_test(vrmath::Vector4f* data, int flowWidth, int flowHeight, int flowDepth); |
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167 | //extern std::vector<vrmath::Vector3f>* find_critical_points(vrmath::Vector4f* data, int flowWidth, int flowHeight, int flowDepth); |
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168 | ParticleSystem::ParticleSystem(int width, int height, |
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169 | const std::string& fileName, |
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170 | int fieldWidth, int fieldHeight, int fieldDepth, |
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171 | bool timeVaryingData, |
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172 | int flowFileStartIndex, int flowFileEndIndex) : |
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173 | _width(width), |
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174 | _height(height) |
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175 | { |
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176 | //////////////////////////////// |
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177 | // TIME-VARYING SERIES |
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178 | _isTimeVaryingField = timeVaryingData; |
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179 | _flowFileStartIndex = flowFileStartIndex; |
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180 | _flowFileEndIndex = flowFileEndIndex; |
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181 | _userDefinedParticleMaxCount = width * height; |
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182 | |
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183 | _skipByte = 0; |
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184 | |
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185 | _screenWidth = _screenHeight = 1; |
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186 | _fov = 60.0f; |
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187 | |
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188 | _particleMaxCount = _width * _height; |
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189 | |
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190 | _pointSize = 10.0f; |
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191 | _camx = 0.0f; |
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192 | _camy = 0.0f; |
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193 | _camz = 0.0f; |
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194 | |
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195 | _scalex = _scaley = _scalez = 1.0f; |
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196 | _currentSortIndex = 0; |
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197 | _destSortIndex = 1; |
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198 | |
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199 | _currentPosIndex = 0; |
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200 | _destPosIndex = 1; |
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201 | |
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202 | _currentSortPass = 0; |
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203 | // TBD |
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204 | //_sortPassesPerFrame = 5; |
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205 | _sortPassesPerFrame = 4; |
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206 | _maxSortPasses = 0; |
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207 | |
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208 | _sortBegin = 0; |
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209 | _sortEnd = _sortPassesPerFrame; |
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210 | _currentTime = 0; |
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211 | _sortEnabled = false; |
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212 | _glyphEnabled = false; |
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213 | _advectionEnabled = false; |
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214 | _streamlineEnabled = false; |
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215 | _particles = new Particle[_particleMaxCount]; |
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216 | memset(_particles, 0, sizeof(Particle) * _particleMaxCount); |
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217 | |
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218 | _colorBuffer = new color4[_particleMaxCount]; |
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219 | memset(_colorBuffer, 0, sizeof(color4) * _particleMaxCount); |
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220 | |
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221 | _positionBuffer = new vrmath::Vector3f[_particleMaxCount]; |
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222 | _vertices = new RenderVertexArray(_particleMaxCount, 3, GL_FLOAT); |
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223 | |
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224 | srand(time(0)); |
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225 | |
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226 | /* |
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227 | // TBD.. |
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228 | glGenBuffersARB(1, &_colorBufferID); |
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229 | glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
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230 | glBufferDataARB(GL_ARRAY_BUFFER, _width * _height * 4, _colorBuffer, GL_STREAM_DRAW_ARB); // undefined data |
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231 | glBindBufferARB(GL_ARRAY_BUFFER, 0); |
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232 | */ |
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233 | |
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234 | _flowWidth = fieldWidth; |
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235 | _flowHeight = fieldHeight; |
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236 | _flowDepth = fieldDepth; |
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237 | |
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238 | float min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ; |
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239 | int index = fileName.rfind('.'); |
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240 | std::string ext = fileName.substr(index + 1, fileName.size() - (index + 1)); |
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241 | float *data = 0; |
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242 | |
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243 | if (this->isTimeVaryingField()) { |
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244 | axisScaleX = _flowWidth; |
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245 | axisScaleY = _flowHeight; |
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246 | axisScaleZ = _flowDepth; |
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247 | _fileNameFormat = fileName; |
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248 | for (int i = 0; i < CircularFifo<float*, 10>::Capacity; ++i) { |
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249 | _queue.array[i] = new float[_flowWidth * _flowHeight * _flowDepth * 4]; |
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250 | } |
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251 | |
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252 | // INSOO |
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253 | // TBD |
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254 | min = 0; |
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255 | max = 234.99; |
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256 | } else { |
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257 | if (ext == "dx") { |
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258 | data = (float*) LoadFlowDx(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ); |
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259 | } else if (ext == "raw") { |
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260 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 0, false); |
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261 | //data = (float*) LoadProcessedFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, axisScaleX, axisScaleY, axisScaleZ); |
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262 | #ifdef notdef |
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263 | } else if (ext == "raws") { |
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264 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 5 * sizeof(int), true); |
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265 | } else if (ext == "data") { |
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266 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 0, true); |
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267 | #endif |
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268 | } |
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269 | //_criticalPoints = find_critical_points((vrmath::Vector4f*) data, _flowWidth, _flowHeight, _flowDepth); |
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270 | //algorithm_test((vrmath::Vector4f*) data, _flowWidth, _flowHeight, _flowDepth); |
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271 | } |
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272 | |
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273 | _scalex = 1; |
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274 | _scaley = axisScaleY / axisScaleX; |
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275 | _scalez = axisScaleZ / axisScaleX; |
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276 | _maxVelocityScale = max; |
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277 | |
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278 | if (!this->isTimeVaryingField()) { |
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279 | Texture3D *flow = new Texture3D(_flowWidth, _flowHeight, _flowDepth, |
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280 | GL_FLOAT, GL_LINEAR, 4, data); |
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281 | _curVectorFieldID = flow->id(); |
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282 | _vectorFieldIDs.push_back(_curVectorFieldID); |
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283 | } else { |
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284 | for (int i = 0; i < 3; ++i) { |
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285 | Texture3D *flow = new Texture3D(_flowWidth, _flowHeight, _flowDepth, |
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286 | GL_FLOAT, GL_LINEAR, 4, data); |
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287 | _vectorFields.push_back(flow); |
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288 | _vectorFieldIDs.push_back(flow->id()); |
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289 | } |
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290 | _curVectorFieldID = _vectorFieldIDs[0]; |
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291 | } |
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292 | |
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293 | std::string path = FilePath::getInstance()->getPath("arrows.bmp"); |
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294 | |
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295 | if (!path.empty()) { |
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296 | ImageLoader *loader = ImageLoaderFactory::getInstance()->createLoader("bmp"); |
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297 | if (loader != NULL) { |
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298 | #ifdef USE_RGBA_ARROW |
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299 | Image *image = loader->load(path.c_str(), Image::IMG_RGBA); |
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300 | #else |
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301 | Image *image = loader->load(path.c_str(), Image::IMG_RGB); |
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302 | #endif |
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303 | if (image != NULL) { |
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304 | unsigned char *bytes = (unsigned char *)image->getImageBuffer(); |
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305 | if (bytes != NULL) { |
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306 | #ifdef USE_RGBA_ARROW |
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307 | _arrows = new Texture2D(image->getWidth(), image->getHeight(), |
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308 | GL_UNSIGNED_BYTE, GL_LINEAR, 4, NULL); |
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309 | #else |
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310 | _arrows = new Texture2D(image->getWidth(), image->getHeight(), |
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311 | GL_UNSIGNED_BYTE, GL_LINEAR, 3, NULL); |
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312 | #endif |
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313 | _arrows->setWrapS(GL_MIRRORED_REPEAT); |
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314 | _arrows->setWrapT(GL_MIRRORED_REPEAT); |
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315 | _arrows->initialize(image->getImageBuffer()); |
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316 | } |
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317 | delete image; |
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318 | } else { |
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319 | ERROR("Failed to load image: arrows.bmp"); |
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320 | } |
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321 | delete loader; |
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322 | } else { |
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323 | ERROR("Couldn't find loader for arrows.bmp"); |
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324 | } |
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325 | } else { |
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326 | ERROR("Couldn't find path to arrows.bmp"); |
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327 | } |
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328 | |
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329 | #ifdef TEST |
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330 | MakeSphereTexture(); |
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331 | #endif |
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332 | |
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333 | glGenBuffersARB(1, &_particleInfoBufferID); |
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334 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
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335 | glBufferDataARB(GL_ARRAY_BUFFER_ARB, _particleMaxCount * 4 * sizeof(float), 0, GL_DYNAMIC_DRAW); |
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336 | glVertexAttribPointerARB(8, 4, GL_FLOAT, GL_FALSE, 0, 0); // 8 = texcoord0 |
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337 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); |
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338 | |
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339 | // TBD.. |
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340 | initStreamlines(_width, _height); |
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341 | initInitPosTex(); |
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342 | |
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343 | initShaders(); |
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344 | createRenderTargets(); |
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345 | createSortRenderTargets(); |
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346 | createStreamlineRenderTargets(); |
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347 | |
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348 | if (this->isTimeVaryingField()) { |
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349 | pthread_t _threads; |
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350 | pthread_attr_t pthread_custom_attr; |
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351 | pthread_attr_init(&pthread_custom_attr); |
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352 | pthread_create(&_threads, &pthread_custom_attr, dataLoadMain, (void *) this); |
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353 | } |
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354 | } |
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355 | |
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356 | void ParticleSystem::initInitPosTex() |
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357 | { |
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358 | glGenFramebuffersEXT(1, &_initPos_fbo); |
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359 | glGenTextures(1, &_initPosTex); |
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360 | |
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361 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _initPos_fbo); |
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362 | |
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363 | glViewport(0, 0, _width, _height); |
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364 | glMatrixMode(GL_PROJECTION); |
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365 | glLoadIdentity(); |
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366 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
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367 | glMatrixMode(GL_MODELVIEW); |
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368 | glLoadIdentity(); |
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369 | |
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370 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
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371 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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372 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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373 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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374 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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375 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
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376 | _width, _height, 0, GL_RGB, GL_FLOAT, NULL); |
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377 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); |
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378 | |
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379 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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380 | GL_TEXTURE_RECTANGLE_ARB, _initPosTex, 0); |
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381 | |
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382 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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383 | } |
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384 | |
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385 | void ParticleSystem::initStreamlines(int width, int height) |
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386 | { |
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387 | _atlas_x = 32; |
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388 | _atlas_y = 32; |
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389 | |
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390 | _atlasWidth = width * _atlas_x; |
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391 | _atlasHeight = height * _atlas_y; |
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392 | _maxAtlasCount = _atlas_x * _atlas_y; |
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393 | |
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394 | _stepSizeStreamline = 1; |
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395 | _curStepCount = 0; |
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396 | _particleCount = width * height; |
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397 | |
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398 | _currentStreamlineOffset = 0; |
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399 | _currentStreamlineIndex = 0; |
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400 | _streamVertices = new RenderVertexArray(_atlasWidth*_atlasHeight * 2, 3, GL_FLOAT); |
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401 | |
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402 | _maxIndexBufferSize = _width * _height * _atlas_x * _atlas_y; |
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403 | _indexBuffer = new unsigned int[_maxIndexBufferSize * 2]; |
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404 | unsigned int* pindex = _indexBuffer; |
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405 | int ax, ay, old_ax = 0, old_ay = 0; |
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406 | for (unsigned int i = 1; i < _maxAtlasCount; ++i) { |
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407 | ax = (i % _atlas_x) * width; |
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408 | ay = (i / _atlas_x) * height; |
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409 | |
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410 | for (int y = 0; y < height ; ++y) { |
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411 | for (int x = 0; x < width; ++x) { |
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412 | *pindex = (old_ay + y) * _atlasWidth + old_ax + x; ++pindex; |
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413 | *pindex = (ay + y) * _atlasWidth + ax + x; ++pindex; |
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414 | } |
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415 | } |
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416 | |
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417 | old_ax = ax; |
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418 | old_ay = ay; |
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419 | } |
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420 | } |
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421 | |
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422 | void ParticleSystem::initShaders() |
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423 | { |
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424 | // TBD... |
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425 | _context = Shader::getCgContext(); |
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426 | |
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427 | std::string path = FilePath::getInstance()->getPath("distance.cg"); |
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428 | _distanceInitFP = |
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429 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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430 | CG_PROFILE_FP40, "initSortIndex", NULL); |
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431 | cgGLLoadProgram(_distanceInitFP); |
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432 | |
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433 | _distanceSortFP = |
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434 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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435 | CG_PROFILE_FP40, "computeDistance", NULL); |
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436 | _viewPosParam = cgGetNamedParameter(_distanceSortFP, "viewerPosition"); |
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437 | cgGLLoadProgram(_distanceSortFP); |
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438 | |
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439 | _distanceSortLookupFP = |
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440 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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441 | CG_PROFILE_FP40, "lookupPosition", NULL); |
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442 | cgGLLoadProgram(_distanceSortLookupFP); |
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443 | |
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444 | path = FilePath::getInstance()->getPath("mergesort.cg"); |
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445 | _sortRecursionFP = |
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446 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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447 | CG_PROFILE_FP40, "mergeSortRecursion", NULL); |
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448 | cgGLLoadProgram(_sortRecursionFP); |
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449 | |
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450 | _srSizeParam = cgGetNamedParameter(_sortRecursionFP, "_Size"); |
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451 | _srStepParam = cgGetNamedParameter(_sortRecursionFP, "_Step"); |
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452 | _srCountParam = cgGetNamedParameter(_sortRecursionFP, "_Count"); |
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453 | |
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454 | _sortEndFP = |
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455 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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456 | CG_PROFILE_FP40, "mergeSortEnd", NULL); |
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457 | cgGLLoadProgram(_sortEndFP); |
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458 | |
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459 | _seSizeParam = cgGetNamedParameter(_sortEndFP, "size"); |
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460 | _seStepParam = cgGetNamedParameter(_sortEndFP, "step"); |
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461 | |
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462 | path = FilePath::getInstance()->getPath("passthrough.cg"); |
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463 | _passthroughFP = |
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464 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
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465 | CG_PROFILE_FP40, "main", NULL); |
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466 | cgGLLoadProgram(_passthroughFP); |
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467 | |
---|
468 | _scaleParam = cgGetNamedParameter(_passthroughFP, "scale"); |
---|
469 | _biasParam = cgGetNamedParameter(_passthroughFP, "bias"); |
---|
470 | |
---|
471 | path = FilePath::getInstance()->getPath("moveparticles.cg"); |
---|
472 | _moveParticlesFP = |
---|
473 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
474 | CG_PROFILE_FP40, "main", NULL); |
---|
475 | cgGLLoadProgram(_moveParticlesFP); |
---|
476 | _mpTimeScale = cgGetNamedParameter(_moveParticlesFP, "timeStep"); |
---|
477 | _mpVectorField = cgGetNamedParameter(_moveParticlesFP, "vfield"); |
---|
478 | _mpUseInitTex= cgGetNamedParameter(_moveParticlesFP, "useInitPos"); |
---|
479 | _mpCurrentTime= cgGetNamedParameter(_moveParticlesFP, "currentTime"); |
---|
480 | _mpMaxScale = cgGetNamedParameter(_moveParticlesFP, "maxScale"); |
---|
481 | _mpScale= cgGetNamedParameter(_moveParticlesFP, "scale"); |
---|
482 | |
---|
483 | path = FilePath::getInstance()->getPath("particlevp.cg"); |
---|
484 | _particleVP = |
---|
485 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
486 | CG_PROFILE_VP40, "vpmain", NULL); |
---|
487 | cgGLLoadProgram(_particleVP); |
---|
488 | _mvpParticleParam = cgGetNamedParameter(_particleVP, "mvp"); |
---|
489 | _mvParticleParam = cgGetNamedParameter(_particleVP, "modelview"); |
---|
490 | _mvTanHalfFOVParam = cgGetNamedParameter(_particleVP, "tanHalfFOV"); |
---|
491 | _mvCurrentTimeParam = cgGetNamedParameter(_particleVP, "currentTime"); |
---|
492 | |
---|
493 | path = FilePath::getInstance()->getPath("particlefp.cg"); |
---|
494 | _particleFP = |
---|
495 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
496 | CG_PROFILE_FP40, "fpmain", NULL); |
---|
497 | cgGLLoadProgram(_particleFP); |
---|
498 | _vectorParticleParam = cgGetNamedParameter(_particleVP, "vfield"); |
---|
499 | |
---|
500 | path = FilePath::getInstance()->getPath("moveparticles.cg"); |
---|
501 | _initParticlePosFP = |
---|
502 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
503 | CG_PROFILE_FP40, "initParticlePosMain", NULL); |
---|
504 | cgGLLoadProgram(_initParticlePosFP); |
---|
505 | _ipVectorFieldParam = cgGetNamedParameter(_moveParticlesFP, "vfield"); |
---|
506 | } |
---|
507 | |
---|
508 | void ParticleSystem::passThoughPositions() |
---|
509 | { |
---|
510 | cgGLBindProgram(_passthroughFP); |
---|
511 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
512 | |
---|
513 | cgGLSetParameter4f(_scaleParam, 1.0, 1.0, 1.0, 1.0); |
---|
514 | cgGLSetParameter4f(_biasParam, 0.0, 0.0, 0.0, 0.0); |
---|
515 | |
---|
516 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
---|
517 | _width, _height, 0, GL_RGB, GL_FLOAT, (GLfloat *) _positionBuffer); |
---|
518 | |
---|
519 | drawQuad(); |
---|
520 | |
---|
521 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
522 | } |
---|
523 | |
---|
524 | void ParticleSystem::resetStreamlines() |
---|
525 | { |
---|
526 | _currentStreamlineIndex = 0; |
---|
527 | _currentStreamlineOffset = 0; |
---|
528 | _curStepCount = 0; |
---|
529 | } |
---|
530 | |
---|
531 | void ParticleSystem::reset() |
---|
532 | { |
---|
533 | _currentTime = 0.0f; |
---|
534 | _sortBegin = 0; |
---|
535 | _sortEnd = _sortPassesPerFrame; |
---|
536 | |
---|
537 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
538 | glMatrixMode(GL_PROJECTION); |
---|
539 | glPushMatrix(); |
---|
540 | glMatrixMode(GL_MODELVIEW); |
---|
541 | |
---|
542 | resetStreamlines(); |
---|
543 | |
---|
544 | unsigned int maxsize = _userDefinedParticleMaxCount; |
---|
545 | |
---|
546 | while (!_availableIndices.empty()) |
---|
547 | _availableIndices.pop(); |
---|
548 | while (!_activeParticles.empty()) |
---|
549 | _activeParticles.pop(); |
---|
550 | |
---|
551 | _activeParticles.reserve(maxsize); |
---|
552 | _availableIndices.reserve(maxsize); |
---|
553 | |
---|
554 | for (unsigned int i = 0; i < maxsize; i++) |
---|
555 | _availableIndices.push(i); |
---|
556 | |
---|
557 | for (int i = 0; i < _particleMaxCount; i++) { |
---|
558 | _particles[i].timeOfBirth = -1.0f; |
---|
559 | _particles[i].lifeTime = 0.0f; |
---|
560 | _particles[i].attributeType = 0.0f; |
---|
561 | _particles[i].index = (float)i; |
---|
562 | } |
---|
563 | |
---|
564 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
---|
565 | Particle* pinfo = (Particle*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
---|
566 | |
---|
567 | for (int i = 0; i < _particleMaxCount; i++) { |
---|
568 | pinfo[i] = _particles[i]; |
---|
569 | } |
---|
570 | |
---|
571 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
---|
572 | |
---|
573 | // POSITION |
---|
574 | memset(_positionBuffer, 0, sizeof(vrmath::Vector3f) * _width * _height); |
---|
575 | for (int y = 0; y < _height; y++) { |
---|
576 | for (int x = 0; x < _width; x++) { |
---|
577 | _positionBuffer[_width * y + x].x = (float)rand() / (float) RAND_MAX; |
---|
578 | //_positionBuffer[_width * y + x].x = 0.9; |
---|
579 | _positionBuffer[_width * y + x].y = (float)rand() / (float) RAND_MAX; |
---|
580 | _positionBuffer[_width * y + x].z = (float)rand() / (float) RAND_MAX; |
---|
581 | } |
---|
582 | } |
---|
583 | |
---|
584 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
585 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
---|
586 | _width, _height, 0, GL_RGB, GL_FLOAT, (float*)_positionBuffer); |
---|
587 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); |
---|
588 | |
---|
589 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
590 | glViewport(0, 0, _width, _height); |
---|
591 | glMatrixMode(GL_PROJECTION); |
---|
592 | glLoadIdentity(); |
---|
593 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
594 | glMatrixMode(GL_MODELVIEW); |
---|
595 | glLoadIdentity(); |
---|
596 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
597 | passThoughPositions(); |
---|
598 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
599 | |
---|
600 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, velocity_fbo[_currentPosIndex]); |
---|
601 | glViewport(0, 0, _width, _height); |
---|
602 | glMatrixMode(GL_PROJECTION); |
---|
603 | glLoadIdentity(); |
---|
604 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
605 | glMatrixMode(GL_MODELVIEW); |
---|
606 | glLoadIdentity(); |
---|
607 | glClearColor(0, 0, 0, 0); |
---|
608 | glClear(GL_COLOR_BUFFER_BIT); |
---|
609 | // TBD.. |
---|
610 | // velocity |
---|
611 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
612 | |
---|
613 | |
---|
614 | /// TBD... |
---|
615 | //DeathTimePBuffer->BeginCapture(); |
---|
616 | //glClear(GL_COLOR_BUFFER_BIT); |
---|
617 | //DeathTimePBuffer->EndCapture(); |
---|
618 | |
---|
619 | if (_sortEnabled) { |
---|
620 | glDisable(GL_BLEND); |
---|
621 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_currentSortIndex]); |
---|
622 | glViewport(0, 0, _width, _height); |
---|
623 | glMatrixMode(GL_PROJECTION); |
---|
624 | glLoadIdentity(); |
---|
625 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
626 | glMatrixMode(GL_MODELVIEW); |
---|
627 | glLoadIdentity(); |
---|
628 | |
---|
629 | cgGLBindProgram(_distanceInitFP); |
---|
630 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
631 | |
---|
632 | drawQuad(); |
---|
633 | |
---|
634 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
635 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
636 | |
---|
637 | _currentSortPass = 0; |
---|
638 | this->_maxSortPasses = 100000; |
---|
639 | } |
---|
640 | |
---|
641 | glMatrixMode(GL_PROJECTION); |
---|
642 | glPopMatrix(); |
---|
643 | glMatrixMode(GL_MODELVIEW); |
---|
644 | glPopAttrib(); |
---|
645 | } |
---|
646 | |
---|
647 | void ParticleSystem::createRenderTargets() |
---|
648 | { |
---|
649 | glGenFramebuffersEXT(2, psys_fbo); |
---|
650 | glGenTextures(2, psys_tex); |
---|
651 | |
---|
652 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
653 | |
---|
654 | glViewport(0, 0, _width, _height); |
---|
655 | glMatrixMode(GL_PROJECTION); |
---|
656 | glLoadIdentity(); |
---|
657 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
658 | glMatrixMode(GL_MODELVIEW); |
---|
659 | glLoadIdentity(); |
---|
660 | |
---|
661 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[0]); |
---|
662 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
663 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
664 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
665 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
666 | |
---|
667 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA32F_ARB, |
---|
668 | _width, _height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
669 | |
---|
670 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
671 | GL_TEXTURE_RECTANGLE_ARB, psys_tex[0], 0); |
---|
672 | |
---|
673 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
674 | |
---|
675 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[1]); |
---|
676 | glViewport(0, 0, _width, _height); |
---|
677 | glMatrixMode(GL_PROJECTION); |
---|
678 | glLoadIdentity(); |
---|
679 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
680 | glMatrixMode(GL_MODELVIEW); |
---|
681 | glLoadIdentity(); |
---|
682 | |
---|
683 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
684 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
685 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
686 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
687 | |
---|
688 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA32F_ARB, |
---|
689 | _width, _height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
690 | |
---|
691 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
692 | GL_TEXTURE_RECTANGLE_ARB, psys_tex[1], 0); |
---|
693 | |
---|
694 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
695 | } |
---|
696 | |
---|
697 | //#define ATLAS_TEXTURE_TARGET GL_TEXTURE_RECTANGLE_ARB |
---|
698 | //#define ATLAS_INTERNAL_TYPE GL_RGBA32F_ARB |
---|
699 | #define ATLAS_TEXTURE_TARGET GL_TEXTURE_2D |
---|
700 | #define ATLAS_INTERNAL_TYPE GL_RGBA |
---|
701 | |
---|
702 | void ParticleSystem::createStreamlineRenderTargets() |
---|
703 | { |
---|
704 | glGenFramebuffersEXT(1, &_atlas_fbo); |
---|
705 | glGenTextures(1, &_atlas_tex); |
---|
706 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _atlas_fbo); |
---|
707 | glViewport(0, 0, _atlasWidth, _atlasHeight); |
---|
708 | glMatrixMode(GL_PROJECTION); |
---|
709 | glLoadIdentity(); |
---|
710 | glOrtho(0, _atlasWidth, 0, _atlasHeight, -10.0f, 10.0f); |
---|
711 | glMatrixMode(GL_MODELVIEW); |
---|
712 | glLoadIdentity(); |
---|
713 | |
---|
714 | glBindTexture(ATLAS_TEXTURE_TARGET, _atlas_tex); |
---|
715 | glTexParameterf(ATLAS_TEXTURE_TARGET, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
716 | glTexParameterf(ATLAS_TEXTURE_TARGET, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
717 | //glTexParameteri(ATLAS_TEXTURE_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
718 | //glTexParameteri(ATLAS_TEXTURE_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
719 | |
---|
720 | glTexImage2D(ATLAS_TEXTURE_TARGET, 0, ATLAS_INTERNAL_TYPE, |
---|
721 | _atlasWidth, _atlasHeight, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
722 | |
---|
723 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
724 | ATLAS_TEXTURE_TARGET, _atlas_tex, 0); |
---|
725 | |
---|
726 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
727 | } |
---|
728 | |
---|
729 | //#define SORT_TEXTURE_FORMAT GL_LUMINANCE_ALPHA |
---|
730 | //#define SORT_TEXTURE_INNER_FORMAT GL_LUMINANCE_ALPHA_FLOAT32_ATI |
---|
731 | #define SORT_TEXTURE_FORMAT GL_RGB |
---|
732 | #define SORT_TEXTURE_INNER_FORMAT GL_RGB32F_ARB |
---|
733 | |
---|
734 | void ParticleSystem::createSortRenderTargets() |
---|
735 | { |
---|
736 | glGenFramebuffersEXT(2, sort_fbo); |
---|
737 | glGenTextures(2, sort_tex); |
---|
738 | |
---|
739 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[0]); |
---|
740 | glViewport(0, 0, _width, _height); |
---|
741 | glMatrixMode(GL_PROJECTION); |
---|
742 | glLoadIdentity(); |
---|
743 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
744 | glMatrixMode(GL_MODELVIEW); |
---|
745 | glLoadIdentity(); |
---|
746 | |
---|
747 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[0]); |
---|
748 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
749 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
750 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
751 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
752 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, SORT_TEXTURE_INNER_FORMAT, |
---|
753 | _width, _height, 0, SORT_TEXTURE_FORMAT, GL_FLOAT, NULL); |
---|
754 | |
---|
755 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
756 | GL_TEXTURE_RECTANGLE_ARB, sort_tex[0], 0); |
---|
757 | |
---|
758 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[1]); |
---|
759 | glViewport(0, 0, _width, _height); |
---|
760 | glMatrixMode(GL_PROJECTION); |
---|
761 | glLoadIdentity(); |
---|
762 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
763 | glMatrixMode(GL_MODELVIEW); |
---|
764 | glLoadIdentity(); |
---|
765 | |
---|
766 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[1]); |
---|
767 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
768 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
769 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
770 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
771 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, SORT_TEXTURE_INNER_FORMAT, |
---|
772 | _width, _height, 0, SORT_TEXTURE_FORMAT, GL_FLOAT, NULL); |
---|
773 | |
---|
774 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
775 | GL_TEXTURE_RECTANGLE_ARB, sort_tex[1], 0); |
---|
776 | |
---|
777 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
778 | } |
---|
779 | |
---|
780 | ParticleSystem::~ParticleSystem() |
---|
781 | { |
---|
782 | std::vector<ParticleEmitter*>::iterator iter; |
---|
783 | for (iter = _emitters.begin(); iter != _emitters.end(); ++iter) |
---|
784 | delete (*iter); |
---|
785 | |
---|
786 | // Particle Position |
---|
787 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
788 | glDeleteTextures(1, psys_tex); |
---|
789 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
790 | glDeleteTextures(1, psys_tex+1); |
---|
791 | glDeleteFramebuffersEXT(2, psys_fbo); |
---|
792 | |
---|
793 | // Sort |
---|
794 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[0]); |
---|
795 | glDeleteTextures(1, sort_tex); |
---|
796 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[1]); |
---|
797 | glDeleteTextures(1, sort_tex+1); |
---|
798 | glDeleteFramebuffersEXT(2, sort_fbo); |
---|
799 | |
---|
800 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, velocity_fbo[0]); |
---|
801 | glDeleteTextures(1, velocity_tex); |
---|
802 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, velocity_fbo[1]); |
---|
803 | glDeleteTextures(1, velocity_tex+1); |
---|
804 | glDeleteFramebuffersEXT(2, velocity_fbo); |
---|
805 | |
---|
806 | if (_vertices) delete _vertices; |
---|
807 | |
---|
808 | delete [] _particles; |
---|
809 | delete [] _positionBuffer; |
---|
810 | delete [] _colorBuffer; |
---|
811 | |
---|
812 | if (_arrows) delete _arrows; |
---|
813 | |
---|
814 | // STREAM LINE |
---|
815 | if (_streamVertices) delete _streamVertices; |
---|
816 | if (_indexBuffer) delete _indexBuffer; |
---|
817 | |
---|
818 | cgDestroyProgram(_distanceInitFP); |
---|
819 | |
---|
820 | cgDestroyParameter(_viewPosParam); |
---|
821 | cgDestroyProgram(_distanceSortFP); |
---|
822 | |
---|
823 | cgDestroyProgram(_distanceSortLookupFP); |
---|
824 | |
---|
825 | cgDestroyParameter(_scaleParam); |
---|
826 | cgDestroyParameter(_biasParam); |
---|
827 | cgDestroyProgram(_passthroughFP); |
---|
828 | |
---|
829 | cgDestroyParameter(_srSizeParam); |
---|
830 | cgDestroyParameter(_srStepParam); |
---|
831 | cgDestroyParameter(_srCountParam); |
---|
832 | |
---|
833 | cgDestroyProgram(_sortRecursionFP); |
---|
834 | |
---|
835 | cgDestroyParameter(_seSizeParam); |
---|
836 | cgDestroyParameter(_seStepParam); |
---|
837 | cgDestroyProgram(_sortEndFP); |
---|
838 | |
---|
839 | cgDestroyParameter(_mpTimeScale); |
---|
840 | cgDestroyParameter(_mpVectorField); |
---|
841 | cgDestroyParameter(_mpUseInitTex); |
---|
842 | cgDestroyParameter(_mpCurrentTime); |
---|
843 | cgDestroyProgram(_moveParticlesFP); |
---|
844 | |
---|
845 | cgDestroyParameter(_ipVectorFieldParam); |
---|
846 | cgDestroyProgram(_initParticlePosFP); |
---|
847 | |
---|
848 | cgDestroyParameter(_mvpParticleParam); |
---|
849 | cgDestroyParameter(_mvParticleParam); |
---|
850 | cgDestroyParameter(_mvTanHalfFOVParam); |
---|
851 | cgDestroyParameter(_mvCurrentTimeParam); |
---|
852 | cgDestroyProgram(_particleFP); |
---|
853 | |
---|
854 | cgDestroyParameter(_vectorParticleParam); |
---|
855 | cgDestroyProgram(_particleVP); |
---|
856 | } |
---|
857 | |
---|
858 | bool ParticleSystem::isEnabled(EnableEnum enabled) |
---|
859 | { |
---|
860 | switch (enabled) { |
---|
861 | case PS_SORT : |
---|
862 | return _sortEnabled; |
---|
863 | break; |
---|
864 | case PS_GLYPH : |
---|
865 | return _glyphEnabled; |
---|
866 | break; |
---|
867 | case PS_DRAW_BBOX : |
---|
868 | return _drawBBoxEnabled; |
---|
869 | break; |
---|
870 | case PS_ADVECTION : |
---|
871 | return _advectionEnabled; |
---|
872 | case PS_STREAMLINE : |
---|
873 | return _streamlineEnabled; |
---|
874 | } |
---|
875 | return false; |
---|
876 | } |
---|
877 | |
---|
878 | void ParticleSystem::enable(EnableEnum enabled) |
---|
879 | { |
---|
880 | switch (enabled) { |
---|
881 | case PS_SORT : |
---|
882 | _sortEnabled = true; |
---|
883 | break; |
---|
884 | case PS_GLYPH : |
---|
885 | _glyphEnabled = true; |
---|
886 | break; |
---|
887 | case PS_DRAW_BBOX : |
---|
888 | _drawBBoxEnabled = true; |
---|
889 | break; |
---|
890 | case PS_ADVECTION : |
---|
891 | _advectionEnabled = true; |
---|
892 | break; |
---|
893 | case PS_STREAMLINE : |
---|
894 | _streamlineEnabled = true; |
---|
895 | break; |
---|
896 | } |
---|
897 | } |
---|
898 | |
---|
899 | void ParticleSystem::disable(EnableEnum enabled) |
---|
900 | { |
---|
901 | switch (enabled) { |
---|
902 | case PS_SORT : |
---|
903 | _sortEnabled = false; |
---|
904 | break; |
---|
905 | case PS_GLYPH : |
---|
906 | _glyphEnabled = false; |
---|
907 | break; |
---|
908 | case PS_DRAW_BBOX : |
---|
909 | _drawBBoxEnabled = false; |
---|
910 | break; |
---|
911 | case PS_ADVECTION : |
---|
912 | _advectionEnabled = false; |
---|
913 | break; |
---|
914 | case PS_STREAMLINE : |
---|
915 | _streamlineEnabled = false; |
---|
916 | break; |
---|
917 | } |
---|
918 | } |
---|
919 | |
---|
920 | void ParticleSystem::advectStreamlines() |
---|
921 | { |
---|
922 | glDisable(GL_BLEND); |
---|
923 | glDisable(GL_DEPTH_TEST); |
---|
924 | |
---|
925 | //glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
926 | //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
927 | |
---|
928 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
929 | glViewport(0, 0, _width, _height); |
---|
930 | glMatrixMode(GL_PROJECTION); |
---|
931 | glPushMatrix(); |
---|
932 | glLoadIdentity(); |
---|
933 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
934 | glMatrixMode(GL_MODELVIEW); |
---|
935 | glPushMatrix(); |
---|
936 | glLoadIdentity(); |
---|
937 | |
---|
938 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
939 | |
---|
940 | cgGLBindProgram(_moveParticlesFP); |
---|
941 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
942 | cgGLSetParameter1f(_mpTimeScale, 0.005); |
---|
943 | cgGLSetParameter1f(_mpUseInitTex, 1.0); |
---|
944 | cgGLSetParameter1f(_mpCurrentTime, _currentTime); |
---|
945 | cgGLSetParameter3f(_mpScale, _scalex, _scaley, _scalez); |
---|
946 | cgGLSetParameter1f(_mpMaxScale, _maxVelocityScale); |
---|
947 | cgGLSetTextureParameter(_mpVectorField, _curVectorFieldID); |
---|
948 | cgGLEnableTextureParameter(_mpVectorField); |
---|
949 | |
---|
950 | for (int i = 0; i < _stepSizeStreamline; ++i) { |
---|
951 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
952 | glClear(GL_COLOR_BUFFER_BIT); |
---|
953 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
954 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
955 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
956 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
957 | drawQuad(); |
---|
958 | swap(_currentPosIndex, _destPosIndex); |
---|
959 | } |
---|
960 | |
---|
961 | cgGLDisableTextureParameter(_mpVectorField); |
---|
962 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
963 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
964 | |
---|
965 | glMatrixMode(GL_PROJECTION); |
---|
966 | glPopMatrix(); |
---|
967 | glMatrixMode(GL_MODELVIEW); |
---|
968 | glPopMatrix(); |
---|
969 | glPopAttrib(); |
---|
970 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
971 | |
---|
972 | if (_currentStreamlineIndex < _maxAtlasCount) { |
---|
973 | int xoffset = (_currentStreamlineIndex % _atlas_x) * _width; |
---|
974 | int yoffset = (_currentStreamlineIndex / _atlas_x) * _height; |
---|
975 | |
---|
976 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
977 | glEnable(ATLAS_TEXTURE_TARGET); |
---|
978 | glBindTexture(ATLAS_TEXTURE_TARGET, _atlas_tex); |
---|
979 | |
---|
980 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
981 | //glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
982 | glCopyTexSubImage2D(ATLAS_TEXTURE_TARGET, 0, xoffset, yoffset, |
---|
983 | 0, 0, _width, _height); |
---|
984 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
985 | glBindTexture(ATLAS_TEXTURE_TARGET, 0); |
---|
986 | glDisable(ATLAS_TEXTURE_TARGET); |
---|
987 | |
---|
988 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _atlas_fbo); |
---|
989 | _streamVertices->read(_atlasWidth, _atlasHeight); |
---|
990 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
991 | _currentStreamlineIndex++; |
---|
992 | |
---|
993 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
994 | } |
---|
995 | } |
---|
996 | |
---|
997 | bool ParticleSystem::advect(float deltaT, float camx, float camy, float camz) |
---|
998 | { |
---|
999 | static bool firstLoad = true; |
---|
1000 | if (this->isTimeVaryingField()) { |
---|
1001 | static float oldTime = (float)clock()/(float)CLOCKS_PER_SEC; |
---|
1002 | #ifdef WANT_TRACE |
---|
1003 | static int index = 0; |
---|
1004 | #endif |
---|
1005 | float time = (float)clock()/(float)CLOCKS_PER_SEC; |
---|
1006 | if ((time - oldTime) > 2.0) { |
---|
1007 | if (!_queue.isEmpty()) { |
---|
1008 | float *data = NULL; |
---|
1009 | if (_queue.top(data)) { |
---|
1010 | #ifdef WANT_TRACE |
---|
1011 | float t = clock() /(float) CLOCKS_PER_SEC; |
---|
1012 | #endif |
---|
1013 | _vectorFields[0]->update(data); |
---|
1014 | #ifdef WANT_TRACE |
---|
1015 | float ti = clock() / (float) CLOCKS_PER_SEC; |
---|
1016 | TRACE("updatePixels time: %f", ti - t); |
---|
1017 | #endif |
---|
1018 | _queue.pop(); |
---|
1019 | oldTime = time; |
---|
1020 | |
---|
1021 | firstLoad = false; |
---|
1022 | TRACE("%d bound", index++); |
---|
1023 | } |
---|
1024 | } |
---|
1025 | } |
---|
1026 | if (firstLoad) return false; |
---|
1027 | } |
---|
1028 | |
---|
1029 | if (!_advectionEnabled) return true; |
---|
1030 | if (this->_streamlineEnabled) { |
---|
1031 | advectStreamlines(); |
---|
1032 | _currentTime += deltaT; |
---|
1033 | } else { |
---|
1034 | _camx = camx; |
---|
1035 | _camy = camy; |
---|
1036 | _camz = camz; |
---|
1037 | |
---|
1038 | glDisable(GL_BLEND); |
---|
1039 | glDisable(GL_DEPTH_TEST); |
---|
1040 | |
---|
1041 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1042 | glViewport(0, 0, _width, _height); |
---|
1043 | glMatrixMode(GL_PROJECTION); |
---|
1044 | glPushMatrix(); |
---|
1045 | glLoadIdentity(); |
---|
1046 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1047 | glMatrixMode(GL_MODELVIEW); |
---|
1048 | glPushMatrix(); |
---|
1049 | glLoadIdentity(); |
---|
1050 | |
---|
1051 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1052 | |
---|
1053 | cgGLBindProgram(_moveParticlesFP); |
---|
1054 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1055 | |
---|
1056 | // INSOO |
---|
1057 | // TIME SCALE |
---|
1058 | |
---|
1059 | cgGLSetParameter1f(_mpTimeScale, 0.005); |
---|
1060 | |
---|
1061 | ////////////////////////////////////////////////////// |
---|
1062 | // UPDATE POS |
---|
1063 | cgGLSetTextureParameter(_mpVectorField, _curVectorFieldID); |
---|
1064 | cgGLEnableTextureParameter(_mpVectorField); |
---|
1065 | cgGLSetParameter3f(_mpScale, _scalex, _scaley, _scalez); |
---|
1066 | cgGLSetParameter1f(_mpMaxScale, _maxVelocityScale); |
---|
1067 | for (int i = 0; i < _stepSizeStreamline; ++i) { |
---|
1068 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
1069 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
1070 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1071 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
1072 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
1073 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
1074 | drawQuad(); |
---|
1075 | swap(_currentPosIndex, _destPosIndex); |
---|
1076 | } |
---|
1077 | cgGLDisableTextureParameter(_mpVectorField); |
---|
1078 | |
---|
1079 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
1080 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1081 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1082 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1083 | |
---|
1084 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1085 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1086 | |
---|
1087 | glMatrixMode(GL_PROJECTION); |
---|
1088 | glPopMatrix(); |
---|
1089 | glMatrixMode(GL_MODELVIEW); |
---|
1090 | glPopMatrix(); |
---|
1091 | glPopAttrib(); |
---|
1092 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1093 | |
---|
1094 | if (_sortEnabled) { |
---|
1095 | sort(); |
---|
1096 | |
---|
1097 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
1098 | _vertices->read(_width, _height); |
---|
1099 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1100 | } else { |
---|
1101 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
1102 | _vertices->read(_width, _height); |
---|
1103 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1104 | } |
---|
1105 | |
---|
1106 | // NEW PARTICLES |
---|
1107 | for (unsigned int i = 0; i < _emitters.size(); ++i) { |
---|
1108 | // TBD.. |
---|
1109 | unsigned int numOfNewParticles = (unsigned int)(randomRange(_emitters[i]->_minNumOfNewParticles, _emitters[i]->_maxNumOfNewParticles) * deltaT); |
---|
1110 | for (unsigned int k = 0; k < numOfNewParticles; ++k) { |
---|
1111 | vrmath::Vector3f position = _emitters[i]->_position; |
---|
1112 | position += |
---|
1113 | _emitters[i]->_maxPositionOffset.scale(vrmath::Vector3f(randomRange(-1.0f, 1.0f), |
---|
1114 | randomRange(-1.0f, 1.0f), |
---|
1115 | randomRange(-1.0f, 1.0f))); |
---|
1116 | float lifetime = randomRange(_emitters[i]->_minLifeTime, _emitters[i]->_maxLifeTime); |
---|
1117 | |
---|
1118 | // TBD.. |
---|
1119 | allocateParticle(position, vrmath::Vector3f(0.0f, 0.0f, 0.0f), lifetime, 1 - (float) k / numOfNewParticles); |
---|
1120 | } |
---|
1121 | } |
---|
1122 | |
---|
1123 | initNewParticles(); |
---|
1124 | |
---|
1125 | _currentTime += deltaT; |
---|
1126 | |
---|
1127 | cleanUpParticles(); |
---|
1128 | } |
---|
1129 | |
---|
1130 | return true; |
---|
1131 | } |
---|
1132 | |
---|
1133 | void ParticleSystem::allocateParticle(const vrmath::Vector3f& position, const vrmath::Vector3f& velocity, |
---|
1134 | float lifeTime, float initTimeStep) |
---|
1135 | { |
---|
1136 | if (_availableIndices.empty()) { |
---|
1137 | return; |
---|
1138 | } |
---|
1139 | |
---|
1140 | int index = _availableIndices.top(); |
---|
1141 | _availableIndices.pop(); |
---|
1142 | |
---|
1143 | ActiveParticle p; |
---|
1144 | p.index = index; |
---|
1145 | p.timeOfDeath = _currentTime + lifeTime; |
---|
1146 | _activeParticles.push(p); |
---|
1147 | |
---|
1148 | NewParticle newParticle; |
---|
1149 | newParticle.index = index; |
---|
1150 | newParticle.position = position; |
---|
1151 | newParticle.velocity = velocity; |
---|
1152 | newParticle.timeOfDeath = p.timeOfDeath; |
---|
1153 | newParticle.initTimeStep = initTimeStep; |
---|
1154 | |
---|
1155 | _newParticles.push_back(newParticle); |
---|
1156 | |
---|
1157 | _particles[index].timeOfBirth = _currentTime; |
---|
1158 | _particles[index].lifeTime = lifeTime; |
---|
1159 | } |
---|
1160 | |
---|
1161 | void ParticleSystem::initNewParticles() |
---|
1162 | { |
---|
1163 | ///////////////////////////// |
---|
1164 | // INIT NEW PARTICLE |
---|
1165 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
---|
1166 | Particle* pinfo = (Particle*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
---|
1167 | |
---|
1168 | std::vector<NewParticle>::iterator iter; |
---|
1169 | for (iter = _newParticles.begin(); iter != _newParticles.end(); ++iter) { |
---|
1170 | pinfo[iter->index] = _particles[iter->index]; |
---|
1171 | } |
---|
1172 | |
---|
1173 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
---|
1174 | |
---|
1175 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
1176 | |
---|
1177 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1178 | glViewport(0, 0, _width, _height); |
---|
1179 | glMatrixMode(GL_PROJECTION); |
---|
1180 | glPushMatrix(); |
---|
1181 | glLoadIdentity(); |
---|
1182 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1183 | glMatrixMode(GL_MODELVIEW); |
---|
1184 | glPushMatrix(); |
---|
1185 | glLoadIdentity(); |
---|
1186 | |
---|
1187 | cgGLBindProgram(_initParticlePosFP); |
---|
1188 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1189 | cgGLSetTextureParameter(_ipVectorFieldParam, _curVectorFieldID); |
---|
1190 | cgGLEnableTextureParameter(_ipVectorFieldParam); |
---|
1191 | // TBD.. |
---|
1192 | //glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1193 | //VelocityPBuffers[VelocityCurrent]->Bind(); |
---|
1194 | |
---|
1195 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1196 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1197 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_destPosIndex]); |
---|
1198 | |
---|
1199 | glBegin(GL_POINTS); |
---|
1200 | for (iter = _newParticles.begin(); iter != _newParticles.end(); iter++) { |
---|
1201 | //TRACE("[%d] %f %f %f", iter->index, iter->position.x,iter->position.y,iter->position.z); |
---|
1202 | glMultiTexCoord3f(GL_TEXTURE0, iter->position.x,iter->position.y,iter->position.z); |
---|
1203 | |
---|
1204 | // TBD.. |
---|
1205 | //glMultiTexCoord2f(GL_TEXTURE1_ARB, (float)(i->Index % Width), (float)(i->Index / Height)); |
---|
1206 | //glMultiTexCoord1f(GL_TEXTURE2_ARB, iter->initTimeStep); |
---|
1207 | |
---|
1208 | glVertex2f((float)(iter->index % _width), |
---|
1209 | (float)(iter->index / _height) + 1/* + offsetY*/ /* + offsetY shouldn't be */); |
---|
1210 | //TRACE("%f %f", (float) (iter->index % _width), (float)(iter->index / _width)); |
---|
1211 | } |
---|
1212 | glEnd(); |
---|
1213 | |
---|
1214 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1215 | cgGLDisableTextureParameter(_ipVectorFieldParam); |
---|
1216 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1217 | |
---|
1218 | glMatrixMode(GL_PROJECTION); |
---|
1219 | glPopMatrix(); |
---|
1220 | glMatrixMode(GL_MODELVIEW); |
---|
1221 | glPopMatrix(); |
---|
1222 | glPopAttrib(); |
---|
1223 | |
---|
1224 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1225 | |
---|
1226 | // INIT NEW END |
---|
1227 | ///////////////////////////// |
---|
1228 | #if 1 |
---|
1229 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _initPos_fbo); |
---|
1230 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1231 | glViewport(0, 0, _width, _height); |
---|
1232 | glMatrixMode(GL_PROJECTION); |
---|
1233 | glPushMatrix(); |
---|
1234 | glLoadIdentity(); |
---|
1235 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1236 | glMatrixMode(GL_MODELVIEW); |
---|
1237 | glPushMatrix(); |
---|
1238 | glLoadIdentity(); |
---|
1239 | |
---|
1240 | cgGLBindProgram(_initParticlePosFP); |
---|
1241 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1242 | cgGLSetTextureParameter(_ipVectorFieldParam, _curVectorFieldID); |
---|
1243 | cgGLEnableTextureParameter(_ipVectorFieldParam); |
---|
1244 | // TBD.. |
---|
1245 | //glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1246 | //VelocityPBuffers[VelocityCurrent]->Bind(); |
---|
1247 | |
---|
1248 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1249 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1250 | //glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
1251 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_destPosIndex]); |
---|
1252 | |
---|
1253 | glBegin(GL_POINTS); |
---|
1254 | for (iter = _newParticles.begin(); iter != _newParticles.end(); iter++) { |
---|
1255 | //TRACE("[%d] %f %f %f", iter->index, iter->position.x,iter->position.y,iter->position.z); |
---|
1256 | glMultiTexCoord3f(GL_TEXTURE0, iter->position.x,iter->position.y,iter->position.z); |
---|
1257 | |
---|
1258 | // TBD.. |
---|
1259 | //glMultiTexCoord2f(GL_TEXTURE1_ARB, (float)(i->Index % Width), (float)(i->Index / Height)); |
---|
1260 | //glMultiTexCoord1f(GL_TEXTURE2_ARB, iter->initTimeStep); |
---|
1261 | |
---|
1262 | glVertex2f((float)(iter->index % _width), |
---|
1263 | (float)(iter->index / _height) + 1/* + offsetY*/ /* + offsetY shouldn't be */); |
---|
1264 | //TRACE("%f %f", (float) (iter->index % _width), (float)(iter->index / _width)); |
---|
1265 | } |
---|
1266 | glEnd(); |
---|
1267 | |
---|
1268 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1269 | cgGLDisableTextureParameter(_ipVectorFieldParam); |
---|
1270 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1271 | |
---|
1272 | glMatrixMode(GL_PROJECTION); |
---|
1273 | glPopMatrix(); |
---|
1274 | glMatrixMode(GL_MODELVIEW); |
---|
1275 | glPopMatrix(); |
---|
1276 | glPopAttrib(); |
---|
1277 | |
---|
1278 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1279 | #endif |
---|
1280 | |
---|
1281 | // Free array. |
---|
1282 | _newParticles.clear(); |
---|
1283 | } |
---|
1284 | |
---|
1285 | void ParticleSystem::cleanUpParticles() |
---|
1286 | { |
---|
1287 | if (! _activeParticles.empty()) { |
---|
1288 | while (_activeParticles.top().timeOfDeath < _currentTime) { |
---|
1289 | unsigned int i = _activeParticles.top().index; |
---|
1290 | _activeParticles.pop(); |
---|
1291 | _availableIndices.push(i); |
---|
1292 | //_usedIndices[i] = false; |
---|
1293 | |
---|
1294 | //if (i >= _maxUsedIndex) |
---|
1295 | // while (!_usedIndices[_maxUsedIndex]) |
---|
1296 | // _maxUsedIndex--; |
---|
1297 | } |
---|
1298 | } |
---|
1299 | } |
---|
1300 | |
---|
1301 | void ParticleSystem::sort() |
---|
1302 | { |
---|
1303 | /////////////////////////////////////////////////////////// |
---|
1304 | // BEGIN - COMPUTE DISTANCE |
---|
1305 | vrmath::Vector3f pos; |
---|
1306 | vrmath::Matrix4x4d mat; |
---|
1307 | glPushMatrix(); |
---|
1308 | glLoadIdentity(); |
---|
1309 | glScalef(_scalex, _scaley, _scalez); |
---|
1310 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
1311 | glGetDoublev(GL_MODELVIEW_MATRIX, mat.get()); |
---|
1312 | glPopMatrix(); |
---|
1313 | mat.invert(); |
---|
1314 | mat.getTranslation(pos); |
---|
1315 | |
---|
1316 | cgGLBindProgram(_distanceSortFP); |
---|
1317 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1318 | |
---|
1319 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1320 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1321 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[_currentSortIndex]); |
---|
1322 | |
---|
1323 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
1324 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1325 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
1326 | |
---|
1327 | cgGLSetParameter3f(_viewPosParam, pos.x, pos.y, pos.z); |
---|
1328 | |
---|
1329 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
1330 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1331 | glViewport(0, 0, _width, _height); |
---|
1332 | glMatrixMode(GL_PROJECTION); |
---|
1333 | glPushMatrix(); |
---|
1334 | glLoadIdentity(); |
---|
1335 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1336 | glMatrixMode(GL_MODELVIEW); |
---|
1337 | glPushMatrix(); |
---|
1338 | glLoadIdentity(); |
---|
1339 | |
---|
1340 | drawQuad(); |
---|
1341 | |
---|
1342 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1343 | |
---|
1344 | glMatrixMode(GL_PROJECTION); |
---|
1345 | glPopMatrix(); |
---|
1346 | glMatrixMode(GL_MODELVIEW); |
---|
1347 | glPopMatrix(); |
---|
1348 | glPopAttrib(); |
---|
1349 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1350 | |
---|
1351 | // _DEBUG |
---|
1352 | /* |
---|
1353 | { |
---|
1354 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
1355 | static float debug[256]; |
---|
1356 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
1357 | TRACE("[%d]", _currentSortIndex); |
---|
1358 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
1359 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
1360 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1361 | } |
---|
1362 | */ |
---|
1363 | |
---|
1364 | // _DEBUG |
---|
1365 | /* |
---|
1366 | { |
---|
1367 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
1368 | static float debug[256]; |
---|
1369 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
1370 | TRACE("currentPos[%d]", _currentPosIndex); |
---|
1371 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
1372 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
1373 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1374 | } |
---|
1375 | */ |
---|
1376 | |
---|
1377 | // compute distance |
---|
1378 | swap(_currentSortIndex, _destSortIndex); |
---|
1379 | |
---|
1380 | // END - COMPUTE DISTANCE |
---|
1381 | /////////////////////////////////////////////////////////// |
---|
1382 | |
---|
1383 | /////////////////////////////////////////////////////////// |
---|
1384 | // BEGIN - MERGE SORT |
---|
1385 | _currentSortPass = 0; |
---|
1386 | |
---|
1387 | int logdSize = logd(_particleMaxCount); |
---|
1388 | _maxSortPasses = (logdSize + 1) * logdSize / 2; |
---|
1389 | |
---|
1390 | _sortBegin = _sortEnd; |
---|
1391 | _sortEnd = (_sortBegin + _sortPassesPerFrame) % _maxSortPasses; |
---|
1392 | |
---|
1393 | cgGLSetParameter2f(_srSizeParam, (float)_width, (float)_height); |
---|
1394 | cgGLSetParameter2f(_seSizeParam, (float)_width, (float)_height); |
---|
1395 | |
---|
1396 | mergeSort(this->_particleMaxCount); |
---|
1397 | |
---|
1398 | // _DEBUG |
---|
1399 | /* |
---|
1400 | { |
---|
1401 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_currentSortIndex]); |
---|
1402 | static float debug[256]; |
---|
1403 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
1404 | TRACE("[%d]", _currentSortIndex); |
---|
1405 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
1406 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
1407 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1408 | } |
---|
1409 | */ |
---|
1410 | |
---|
1411 | // END - MERGE SORT |
---|
1412 | /////////////////////////////////////////////////////////// |
---|
1413 | |
---|
1414 | /////////////////////////////////////////////////////////// |
---|
1415 | // POSITION LOOKUP |
---|
1416 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
1417 | cgGLBindProgram(_distanceSortLookupFP); |
---|
1418 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1419 | |
---|
1420 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1421 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[_currentSortIndex]); |
---|
1422 | |
---|
1423 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
1424 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
1425 | |
---|
1426 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1427 | glViewport(0, 0, _width, _height); |
---|
1428 | glMatrixMode(GL_PROJECTION); |
---|
1429 | glPushMatrix(); |
---|
1430 | glLoadIdentity(); |
---|
1431 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1432 | glMatrixMode(GL_MODELVIEW); |
---|
1433 | glPushMatrix(); |
---|
1434 | glLoadIdentity(); |
---|
1435 | |
---|
1436 | drawQuad(); |
---|
1437 | |
---|
1438 | glMatrixMode(GL_PROJECTION); |
---|
1439 | glPopMatrix(); |
---|
1440 | glMatrixMode(GL_MODELVIEW); |
---|
1441 | glPopMatrix(); |
---|
1442 | glPopAttrib(); |
---|
1443 | |
---|
1444 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1445 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1446 | |
---|
1447 | // POSITION LOOKUP |
---|
1448 | /////////////////////////////////////////////////////////// |
---|
1449 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
1450 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1451 | |
---|
1452 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1453 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
1454 | |
---|
1455 | // _DEBUG |
---|
1456 | /* |
---|
1457 | { |
---|
1458 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
1459 | static float debug[256]; |
---|
1460 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
1461 | TRACE("[%d]", _currentSortIndex); |
---|
1462 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
1463 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
1464 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1465 | } |
---|
1466 | */ |
---|
1467 | } |
---|
1468 | |
---|
1469 | void ParticleSystem::mergeSort(int count) |
---|
1470 | { |
---|
1471 | if (count > 1) { |
---|
1472 | mergeSort(count >> 1); |
---|
1473 | merge(count, 1); |
---|
1474 | } |
---|
1475 | } |
---|
1476 | |
---|
1477 | void ParticleSystem::merge(int count, int step) |
---|
1478 | { |
---|
1479 | if (count > 2) { |
---|
1480 | merge(count >> 1, step << 1); |
---|
1481 | |
---|
1482 | ++_currentSortPass; |
---|
1483 | |
---|
1484 | if (_sortBegin < _sortEnd) { |
---|
1485 | if (_currentSortPass < _sortBegin || _currentSortPass >= _sortEnd) |
---|
1486 | return; |
---|
1487 | } else { |
---|
1488 | if (_currentSortPass < _sortBegin && _currentSortPass >= _sortEnd) |
---|
1489 | return; |
---|
1490 | } |
---|
1491 | |
---|
1492 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
1493 | cgGLBindProgram(_sortRecursionFP); |
---|
1494 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1495 | |
---|
1496 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1497 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , sort_tex[_currentSortIndex]); |
---|
1498 | |
---|
1499 | cgGLSetParameter1f(_srStepParam, (float)step); |
---|
1500 | cgGLSetParameter1f(_srCountParam, (float)count); |
---|
1501 | |
---|
1502 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1503 | glViewport(0, 0, _width, _height); |
---|
1504 | glMatrixMode(GL_PROJECTION); |
---|
1505 | glPushMatrix(); |
---|
1506 | glLoadIdentity(); |
---|
1507 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1508 | glMatrixMode(GL_MODELVIEW); |
---|
1509 | glPushMatrix(); |
---|
1510 | glLoadIdentity(); |
---|
1511 | |
---|
1512 | drawQuad(); |
---|
1513 | |
---|
1514 | glMatrixMode(GL_PROJECTION); |
---|
1515 | glPopMatrix(); |
---|
1516 | glMatrixMode(GL_MODELVIEW); |
---|
1517 | glPopMatrix(); |
---|
1518 | glPopAttrib(); |
---|
1519 | |
---|
1520 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1521 | |
---|
1522 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1523 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , 0); |
---|
1524 | } else { |
---|
1525 | _currentSortPass++; |
---|
1526 | |
---|
1527 | if (_sortBegin < _sortEnd) { |
---|
1528 | if (_currentSortPass < _sortBegin || _currentSortPass >= _sortEnd) |
---|
1529 | return; |
---|
1530 | } else { |
---|
1531 | if (_currentSortPass < _sortBegin && _currentSortPass >= _sortEnd) |
---|
1532 | return; |
---|
1533 | } |
---|
1534 | |
---|
1535 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
1536 | cgGLBindProgram(_sortEndFP); |
---|
1537 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1538 | |
---|
1539 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
1540 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , sort_tex[_currentSortIndex]); |
---|
1541 | |
---|
1542 | cgGLSetParameter1f(_seStepParam, (float)step); |
---|
1543 | |
---|
1544 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
1545 | glViewport(0, 0, _width, _height); |
---|
1546 | glMatrixMode(GL_PROJECTION); |
---|
1547 | glPushMatrix(); |
---|
1548 | glLoadIdentity(); |
---|
1549 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
1550 | glMatrixMode(GL_MODELVIEW); |
---|
1551 | glPushMatrix(); |
---|
1552 | glLoadIdentity(); |
---|
1553 | |
---|
1554 | drawQuad(); |
---|
1555 | |
---|
1556 | glMatrixMode(GL_PROJECTION); |
---|
1557 | glPopMatrix(); |
---|
1558 | glMatrixMode(GL_MODELVIEW); |
---|
1559 | glPopMatrix(); |
---|
1560 | glPopAttrib(); |
---|
1561 | |
---|
1562 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1563 | |
---|
1564 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , 0); |
---|
1565 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
1566 | } |
---|
1567 | |
---|
1568 | swap(_currentSortIndex, _destSortIndex); |
---|
1569 | } |
---|
1570 | |
---|
1571 | void ParticleSystem::renderStreamlines() |
---|
1572 | { |
---|
1573 | if (_currentStreamlineIndex > 2) { |
---|
1574 | glPushMatrix(); |
---|
1575 | glScalef(_scalex, _scaley, _scalez); |
---|
1576 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
1577 | |
---|
1578 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
1579 | |
---|
1580 | glColor3f(1.0f, 0.0f, 0.0f); |
---|
1581 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
1582 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
1583 | |
---|
1584 | _streamVertices->setPointer(0); |
---|
1585 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
1586 | |
---|
1587 | ::glDrawElements(GL_LINES, _particleCount * 2 * (_currentStreamlineIndex - 1), |
---|
1588 | GL_UNSIGNED_INT, _indexBuffer); |
---|
1589 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
1590 | glPopMatrix(); |
---|
1591 | } |
---|
1592 | } |
---|
1593 | |
---|
1594 | void ParticleSystem::render() |
---|
1595 | { |
---|
1596 | glPushMatrix(); |
---|
1597 | |
---|
1598 | if (_streamlineEnabled) { |
---|
1599 | renderStreamlines(); |
---|
1600 | } else { |
---|
1601 | glScalef(_scalex, _scaley, _scalez); |
---|
1602 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
1603 | if (_glyphEnabled) { |
---|
1604 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
1605 | glColor3f(1, 1, 1); |
---|
1606 | |
---|
1607 | glDepthMask(GL_FALSE); |
---|
1608 | glEnable(GL_BLEND); |
---|
1609 | |
---|
1610 | #ifndef USE_RGBA_ARROW |
---|
1611 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
---|
1612 | #else |
---|
1613 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
1614 | #endif |
---|
1615 | glEnable(GL_ALPHA_TEST); |
---|
1616 | glAlphaFunc(GL_GREATER, 0.6); |
---|
1617 | |
---|
1618 | glEnable(GL_POINT_SPRITE_ARB); |
---|
1619 | glPointSize(_pointSize); |
---|
1620 | |
---|
1621 | glEnable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
1622 | |
---|
1623 | #ifndef TEST |
---|
1624 | _arrows->activate(); |
---|
1625 | glEnable(GL_TEXTURE_2D); |
---|
1626 | glPointParameterfARB(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f); |
---|
1627 | |
---|
1628 | glPointParameterfARB(GL_POINT_SIZE_MIN_ARB, 1.0f); |
---|
1629 | glPointParameterfARB(GL_POINT_SIZE_MAX_ARB, 100.0f); |
---|
1630 | glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE); |
---|
1631 | |
---|
1632 | cgGLBindProgram(_particleVP); |
---|
1633 | cgGLBindProgram(_particleFP); |
---|
1634 | cgGLEnableProfile(CG_PROFILE_VP40); |
---|
1635 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
1636 | |
---|
1637 | cgSetParameter1f(_mvCurrentTimeParam, _currentTime); |
---|
1638 | //TRACE("%f %f, %f %d", _fov, tan(_fov), tan(_fov / 2.0), _screenHeight); |
---|
1639 | //cgSetParameter1f(_mvTanHalfFOVParam, -tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5); |
---|
1640 | //float v = tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5; |
---|
1641 | cgSetParameter1f(_mvTanHalfFOVParam, tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5); |
---|
1642 | //cgSetParameter1f(_mvTanHalfFOVParam, _screenHeight * 0.5 / tan(_fov * M_PI / 180 * 0.5)); |
---|
1643 | |
---|
1644 | cgGLSetStateMatrixParameter(_mvpParticleParam, |
---|
1645 | CG_GL_MODELVIEW_PROJECTION_MATRIX, |
---|
1646 | CG_GL_MATRIX_IDENTITY); |
---|
1647 | cgGLSetStateMatrixParameter(_mvParticleParam, |
---|
1648 | CG_GL_MODELVIEW_MATRIX, |
---|
1649 | CG_GL_MATRIX_IDENTITY); |
---|
1650 | |
---|
1651 | // TBD.. |
---|
1652 | glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); |
---|
1653 | glEnableVertexAttribArrayARB(8); |
---|
1654 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
1655 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
1656 | _vertices->setPointer(0); |
---|
1657 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
1658 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
1659 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
1660 | |
---|
1661 | // TBD... |
---|
1662 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
1663 | glPointSize(1); |
---|
1664 | |
---|
1665 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
1666 | //glDisableClientState(GL_COLOR_ARRAY); |
---|
1667 | |
---|
1668 | // TBD... |
---|
1669 | ::glDisableVertexAttribArray(8); |
---|
1670 | glPopClientAttrib(); |
---|
1671 | |
---|
1672 | cgGLDisableProfile(CG_PROFILE_VP40); |
---|
1673 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
1674 | |
---|
1675 | glDepthMask(GL_TRUE); |
---|
1676 | |
---|
1677 | glDisable(GL_POINT_SPRITE_ARB); |
---|
1678 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
1679 | |
---|
1680 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
1681 | glDisable(GL_BLEND); |
---|
1682 | #else |
---|
1683 | glBindTexture(GL_TEXTURE_2D, ::SpotTexID); |
---|
1684 | glEnable(GL_TEXTURE_2D); |
---|
1685 | //glPointParameterfARB(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 60.0f); |
---|
1686 | glPointParameterfARB(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f); |
---|
1687 | |
---|
1688 | glPointParameterfARB(GL_POINT_SIZE_MIN_ARB, 1.0f); |
---|
1689 | glPointParameterfARB(GL_POINT_SIZE_MAX_ARB, 100.0f); |
---|
1690 | glTexEnvi(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE); |
---|
1691 | |
---|
1692 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
1693 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
1694 | _vertices->setPointer(0); |
---|
1695 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
1696 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
1697 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
1698 | |
---|
1699 | // TBD... |
---|
1700 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
1701 | glPointSize(1); |
---|
1702 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
1703 | |
---|
1704 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
1705 | |
---|
1706 | glDepthMask(GL_TRUE); |
---|
1707 | |
---|
1708 | glDisable(GL_POINT_SPRITE_ARB); |
---|
1709 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
1710 | |
---|
1711 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
1712 | glDisable(GL_BLEND); |
---|
1713 | #endif |
---|
1714 | } else { |
---|
1715 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
1716 | |
---|
1717 | glColor3f(1, 1, 1); |
---|
1718 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
1719 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
1720 | glPointSize(10); |
---|
1721 | _vertices->setPointer(0); |
---|
1722 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
1723 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
1724 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
1725 | glDrawArrays(GL_POINTS, 0, _particleMaxCount); |
---|
1726 | |
---|
1727 | glPointSize(1); |
---|
1728 | _vertices->setPointer(0); |
---|
1729 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
1730 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
1731 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
1732 | glDrawArrays(GL_POINTS, 0, _particleMaxCount); |
---|
1733 | |
---|
1734 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
1735 | } |
---|
1736 | |
---|
1737 | #ifdef notdef |
---|
1738 | if (_criticalPoints && _criticalPoints->size()) { |
---|
1739 | std::vector<vrmath::Vector3f>::iterator iter; |
---|
1740 | glColor4f(1, 1, 1, 1); |
---|
1741 | glPointSize(10); |
---|
1742 | glBegin(GL_POINTS); |
---|
1743 | for (iter = _criticalPoints->begin(); iter != _criticalPoints->end(); ++iter) { |
---|
1744 | glVertex3f((*iter).x, (*iter).y, (*iter).z); |
---|
1745 | } |
---|
1746 | glEnd(); |
---|
1747 | glPointSize(1); |
---|
1748 | } |
---|
1749 | #endif |
---|
1750 | } |
---|
1751 | |
---|
1752 | glPopMatrix(); |
---|
1753 | } |
---|
1754 | |
---|
1755 | void ParticleSystem::drawQuad(int x1, int y1, int x2, int y2) |
---|
1756 | { |
---|
1757 | glBegin(GL_QUADS); |
---|
1758 | |
---|
1759 | glTexCoord2f(x1, y1); |
---|
1760 | glVertex2f(x1, y1); |
---|
1761 | |
---|
1762 | glTexCoord2f(x2, y1); |
---|
1763 | glVertex2f(x2, y1); |
---|
1764 | |
---|
1765 | glTexCoord2f(x2, y2); |
---|
1766 | glVertex2f(x2, y2); |
---|
1767 | |
---|
1768 | glTexCoord2f(x1, y2); |
---|
1769 | glVertex2f(x1, y2); |
---|
1770 | |
---|
1771 | glEnd(); |
---|
1772 | } |
---|
1773 | |
---|
1774 | void ParticleSystem::drawQuad() |
---|
1775 | { |
---|
1776 | glBegin(GL_QUADS); |
---|
1777 | |
---|
1778 | glTexCoord2f(0, 0); |
---|
1779 | glVertex2f(0, 0); |
---|
1780 | |
---|
1781 | glTexCoord2f((float)_width, 0); |
---|
1782 | glVertex2f((float)_width, 0); |
---|
1783 | |
---|
1784 | glTexCoord2f((float)_width, (float)_height); |
---|
1785 | glVertex2f((float)_width, (float)_height); |
---|
1786 | |
---|
1787 | glTexCoord2f(0, (float)_height); |
---|
1788 | glVertex2f(0, (float)_height); |
---|
1789 | |
---|
1790 | glEnd(); |
---|
1791 | } |
---|
1792 | |
---|
1793 | void ParticleSystem::addEmitter(ParticleEmitter* emitter) |
---|
1794 | { |
---|
1795 | _emitters.push_back(emitter); |
---|
1796 | } |
---|
1797 | |
---|
1798 | void ParticleSystem::removeEmitter(int index) |
---|
1799 | { |
---|
1800 | // TBD... |
---|
1801 | } |
---|
1802 | |
---|
1803 | void ParticleSystem::removeAllEmitters() |
---|
1804 | { |
---|
1805 | std::vector<ParticleEmitter*>::iterator iter; |
---|
1806 | for (iter = _emitters.begin(); iter != _emitters.end(); ++iter) { |
---|
1807 | delete *iter; |
---|
1808 | } |
---|
1809 | _emitters.clear(); |
---|
1810 | } |
---|
1811 | |
---|
1812 | void ParticleSystem::drawUnitBox() |
---|
1813 | { |
---|
1814 | float x0 = 0.0f, y0 = 0.0f, z0 = 0.0f; |
---|
1815 | float x1 = 1.0f, y1 = 1.0f, z1 = 1.0f; |
---|
1816 | float r = 1.0f, g = 1.0f, b = 0.0f; |
---|
1817 | float line_width = 2.0f; |
---|
1818 | glEnable(GL_DEPTH_TEST); |
---|
1819 | glDisable(GL_TEXTURE_2D); |
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1820 | glEnable(GL_BLEND); |
---|
1821 | |
---|
1822 | glColor4d(r, g, b, 1.0); |
---|
1823 | glLineWidth(line_width); |
---|
1824 | |
---|
1825 | glBegin(GL_LINE_LOOP); |
---|
1826 | { |
---|
1827 | glVertex3d(x0, y0, z0); |
---|
1828 | glVertex3d(x1, y0, z0); |
---|
1829 | glVertex3d(x1, y1, z0); |
---|
1830 | glVertex3d(x0, y1, z0); |
---|
1831 | } |
---|
1832 | glEnd(); |
---|
1833 | |
---|
1834 | glBegin(GL_LINE_LOOP); |
---|
1835 | { |
---|
1836 | glVertex3d(x0, y0, z1); |
---|
1837 | glVertex3d(x1, y0, z1); |
---|
1838 | glVertex3d(x1, y1, z1); |
---|
1839 | glVertex3d(x0, y1, z1); |
---|
1840 | } |
---|
1841 | glEnd(); |
---|
1842 | |
---|
1843 | glBegin(GL_LINE_LOOP); |
---|
1844 | { |
---|
1845 | glVertex3d(x0, y0, z0); |
---|
1846 | glVertex3d(x0, y0, z1); |
---|
1847 | glVertex3d(x0, y1, z1); |
---|
1848 | glVertex3d(x0, y1, z0); |
---|
1849 | } |
---|
1850 | glEnd(); |
---|
1851 | |
---|
1852 | glBegin(GL_LINE_LOOP); |
---|
1853 | { |
---|
1854 | glVertex3d(x1, y0, z0); |
---|
1855 | glVertex3d(x1, y0, z1); |
---|
1856 | glVertex3d(x1, y1, z1); |
---|
1857 | glVertex3d(x1, y1, z0); |
---|
1858 | } |
---|
1859 | glEnd(); |
---|
1860 | glLineWidth(1.0f); |
---|
1861 | } |
---|
1862 | |
---|
1863 | void ParticleSystem::setUserDefinedNumOfParticles(int numParticles) |
---|
1864 | { |
---|
1865 | if (numParticles < _particleMaxCount) |
---|
1866 | _userDefinedParticleMaxCount = numParticles; |
---|
1867 | else |
---|
1868 | _userDefinedParticleMaxCount = _particleMaxCount; |
---|
1869 | reset(); |
---|
1870 | } |
---|