[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
---|
[3502] | 2 | /* |
---|
| 3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
---|
| 4 | * |
---|
| 5 | */ |
---|
[2818] | 6 | #include "nvconf.h" |
---|
[2803] | 7 | |
---|
[2096] | 8 | #include <time.h> |
---|
| 9 | #include <stdlib.h> |
---|
[1704] | 10 | #include <stdio.h> |
---|
[2857] | 11 | #include <math.h> |
---|
[2803] | 12 | #include <pthread.h> |
---|
| 13 | |
---|
[2857] | 14 | #include <GL/glew.h> |
---|
[2803] | 15 | #include <Cg/cgGL.h> |
---|
| 16 | |
---|
[3465] | 17 | #include <util/FilePath.h> |
---|
[2972] | 18 | |
---|
[2857] | 19 | #include <Image.h> |
---|
| 20 | #include <ImageLoader.h> |
---|
| 21 | #include <ImageLoaderFactory.h> |
---|
[2803] | 22 | |
---|
[3492] | 23 | #include <vrmath/Matrix4x4d.h> |
---|
[3467] | 24 | #include <vrmath/Vector3f.h> |
---|
| 25 | #include <vrmath/Vector4f.h> |
---|
[2803] | 26 | |
---|
[2376] | 27 | #include "ParticleSystem.h" |
---|
| 28 | #include "ParticleEmitter.h" |
---|
[2862] | 29 | #include "DataLoader.h" |
---|
[2857] | 30 | #include "Texture2D.h" |
---|
| 31 | #include "Texture3D.h" |
---|
[2870] | 32 | #include "NvShader.h" |
---|
[2376] | 33 | #include "Trace.h" |
---|
[2096] | 34 | |
---|
[3463] | 35 | using namespace nv::util; |
---|
| 36 | |
---|
[2096] | 37 | #define USE_RGBA_ARROW |
---|
| 38 | |
---|
| 39 | //#define TEST |
---|
[2805] | 40 | |
---|
[2096] | 41 | inline float randomRange(float rangeMin, float rangeMax) |
---|
| 42 | { |
---|
[2805] | 43 | return ((float)rand() / RAND_MAX) * (rangeMax - rangeMin) + rangeMin ; |
---|
[2096] | 44 | } |
---|
| 45 | |
---|
| 46 | inline int logd(int value) |
---|
| 47 | { |
---|
[2805] | 48 | int l; |
---|
| 49 | for (l = 0; value >> l; l++); |
---|
| 50 | return l - 1; |
---|
[2096] | 51 | } |
---|
| 52 | |
---|
| 53 | inline void swap(int& x, int& y) |
---|
| 54 | { |
---|
[2805] | 55 | if (x != y) { |
---|
| 56 | x ^= y; |
---|
| 57 | y ^= x; |
---|
| 58 | x ^= y; |
---|
| 59 | } |
---|
[2096] | 60 | } |
---|
| 61 | |
---|
[2809] | 62 | void *ParticleSystem::dataLoadMain(void *data) |
---|
[2096] | 63 | { |
---|
[2814] | 64 | ParticleSystem *particleSystem = (ParticleSystem *)data; |
---|
[2805] | 65 | CircularFifo<float*, 10>& queue = particleSystem->_queue; |
---|
[2807] | 66 | |
---|
[2805] | 67 | // TBD.. |
---|
| 68 | //float min = particleSystem->_time_series_vel_mag_min; |
---|
| 69 | //float max = particleSystem->_time_series_vel_mag_max; |
---|
[1704] | 70 | |
---|
[2805] | 71 | int startIndex = particleSystem->_flowFileStartIndex; |
---|
| 72 | int endIndex = particleSystem->_flowFileEndIndex; |
---|
[2096] | 73 | |
---|
[2805] | 74 | int curIndex = startIndex; |
---|
[2814] | 75 | int flowWidth = particleSystem->_flowWidth; |
---|
| 76 | int flowHeight = particleSystem->_flowHeight; |
---|
| 77 | int flowDepth = particleSystem->_flowDepth; |
---|
[2807] | 78 | |
---|
[2805] | 79 | const char* fileNameFormat = particleSystem->_fileNameFormat.c_str(); |
---|
| 80 | char buff[256]; |
---|
[2096] | 81 | |
---|
[2805] | 82 | bool done = false; |
---|
| 83 | while (!done) { |
---|
| 84 | if (curIndex > endIndex) { |
---|
| 85 | curIndex = startIndex; |
---|
| 86 | } |
---|
[2096] | 87 | |
---|
[2805] | 88 | if (!queue.isFull()) { |
---|
| 89 | int tail = queue.tailIndex(); |
---|
| 90 | if (tail != -1) { |
---|
| 91 | sprintf(buff, fileNameFormat, curIndex); |
---|
[3463] | 92 | //std::string path = FilePath::getInstance()->getPath(buff); |
---|
[2814] | 93 | #ifdef WANT_TRACE |
---|
[2805] | 94 | float t = clock() /(float) CLOCKS_PER_SEC; |
---|
[2814] | 95 | #endif |
---|
[2805] | 96 | LoadProcessedFlowRaw(buff, flowWidth, flowHeight, flowDepth, queue.array[tail]); |
---|
[2814] | 97 | #ifdef WANT_TRACE |
---|
[2805] | 98 | float ti = clock() / (float) CLOCKS_PER_SEC; |
---|
[3452] | 99 | TRACE("LoadProcessedFlowRaw time: %f", ti - t); |
---|
[2814] | 100 | #endif |
---|
[2805] | 101 | queue.push(); |
---|
[3452] | 102 | TRACE("%d loaded", curIndex); |
---|
[2805] | 103 | ++curIndex; |
---|
| 104 | } |
---|
[2807] | 105 | } |
---|
| 106 | } |
---|
[2096] | 107 | |
---|
[2805] | 108 | return 0; |
---|
[2096] | 109 | } |
---|
| 110 | |
---|
| 111 | CGcontext ParticleSystem::_context = 0; |
---|
| 112 | |
---|
| 113 | unsigned int SpotTexID = 0; |
---|
| 114 | |
---|
[1704] | 115 | void MakeSphereTexture() |
---|
| 116 | { |
---|
| 117 | const int DIM = 128; |
---|
| 118 | const int DIM2 = 63; |
---|
| 119 | //const float TEX_SCALE = 6.0; |
---|
| 120 | |
---|
| 121 | glGenTextures(1, (GLuint *)&SpotTexID); |
---|
| 122 | glBindTexture(GL_TEXTURE_2D, SpotTexID); |
---|
| 123 | |
---|
[2805] | 124 | float col[4] = {1.f, 1.f, 1.f, 1.f}; |
---|
| 125 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, col); |
---|
| 126 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
---|
[1704] | 127 | |
---|
| 128 | float *img = new float[DIM*DIM]; |
---|
| 129 | |
---|
[3492] | 130 | vrmath::Vector3f light(1,1,3); |
---|
| 131 | light = light.normalize(); |
---|
[1704] | 132 | |
---|
[2805] | 133 | for (int y = 0; y < DIM; y++) { |
---|
| 134 | for (int x = 0; x < DIM; x++) { |
---|
[1704] | 135 | // Clamping the edges to zero allows Nvidia's blend optimizations to do their thing. |
---|
[2807] | 136 | if (x == 0 || x == DIM-1 || y == 0 || y == DIM-1) { |
---|
[1704] | 137 | img[y*DIM+x] = 0; |
---|
[2805] | 138 | } else { |
---|
[3492] | 139 | vrmath::Vector3f p(x, y, 0); |
---|
| 140 | p = p - vrmath::Vector3f(DIM2, DIM2, 0); |
---|
[1704] | 141 | float len = p.length(); |
---|
| 142 | float z = sqrt(DIM2*DIM2 - len*len); |
---|
| 143 | p.z = z; |
---|
[2805] | 144 | if (len >= DIM2) { |
---|
[1704] | 145 | img[y*DIM+x] = 0.0; |
---|
| 146 | continue; |
---|
| 147 | } |
---|
| 148 | |
---|
[3492] | 149 | p = p.normalize(); |
---|
[1704] | 150 | float v = p.dot(light); |
---|
| 151 | if(v < 0) v = 0; |
---|
| 152 | |
---|
| 153 | img[y*DIM+x] = v; |
---|
| 154 | } |
---|
| 155 | } |
---|
| 156 | } |
---|
| 157 | |
---|
| 158 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
---|
| 159 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
---|
| 160 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
---|
| 161 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
---|
| 162 | |
---|
| 163 | gluBuild2DMipmaps(GL_TEXTURE_2D, GL_ALPHA16, DIM, DIM, GL_ALPHA, GL_FLOAT, img); |
---|
[2096] | 164 | } |
---|
[1704] | 165 | |
---|
[3492] | 166 | //extern void algorithm_test(vrmath::Vector4f* data, int flowWidth, int flowHeight, int flowDepth); |
---|
| 167 | //extern std::vector<vrmath::Vector3f>* find_critical_points(vrmath::Vector4f* data, int flowWidth, int flowHeight, int flowDepth); |
---|
[2805] | 168 | ParticleSystem::ParticleSystem(int width, int height, |
---|
| 169 | const std::string& fileName, |
---|
| 170 | int fieldWidth, int fieldHeight, int fieldDepth, |
---|
| 171 | bool timeVaryingData, |
---|
| 172 | int flowFileStartIndex, int flowFileEndIndex) : |
---|
[2807] | 173 | _width(width), |
---|
| 174 | _height(height) |
---|
[2096] | 175 | { |
---|
[2805] | 176 | //////////////////////////////// |
---|
| 177 | // TIME-VARYING SERIES |
---|
| 178 | _isTimeVaryingField = timeVaryingData; |
---|
| 179 | _flowFileStartIndex = flowFileStartIndex; |
---|
| 180 | _flowFileEndIndex = flowFileEndIndex; |
---|
| 181 | _userDefinedParticleMaxCount = width * height; |
---|
[1704] | 182 | |
---|
[2805] | 183 | _skipByte = 0; |
---|
[1704] | 184 | |
---|
[2805] | 185 | _screenWidth = _screenHeight = 1; |
---|
| 186 | _fov = 60.0f; |
---|
[1704] | 187 | |
---|
[2805] | 188 | _particleMaxCount = _width * _height; |
---|
[2096] | 189 | |
---|
[2805] | 190 | _pointSize = 10.0f; |
---|
| 191 | _camx = 0.0f; |
---|
| 192 | _camy = 0.0f; |
---|
| 193 | _camz = 0.0f; |
---|
[2096] | 194 | |
---|
[2805] | 195 | _scalex = _scaley = _scalez = 1.0f; |
---|
| 196 | _currentSortIndex = 0; |
---|
| 197 | _destSortIndex = 1; |
---|
[2096] | 198 | |
---|
[2805] | 199 | _currentPosIndex = 0; |
---|
| 200 | _destPosIndex = 1; |
---|
[2096] | 201 | |
---|
[2805] | 202 | _currentSortPass = 0; |
---|
| 203 | // TBD |
---|
| 204 | //_sortPassesPerFrame = 5; |
---|
| 205 | _sortPassesPerFrame = 4; |
---|
| 206 | _maxSortPasses = 0; |
---|
[2096] | 207 | |
---|
[2805] | 208 | _sortBegin = 0; |
---|
| 209 | _sortEnd = _sortPassesPerFrame; |
---|
| 210 | _currentTime = 0; |
---|
| 211 | _sortEnabled = false; |
---|
[2818] | 212 | _glyphEnabled = false; |
---|
[2805] | 213 | _advectionEnabled = false; |
---|
| 214 | _streamlineEnabled = false; |
---|
| 215 | _particles = new Particle[_particleMaxCount]; |
---|
| 216 | memset(_particles, 0, sizeof(Particle) * _particleMaxCount); |
---|
[2096] | 217 | |
---|
[2805] | 218 | _colorBuffer = new color4[_particleMaxCount]; |
---|
| 219 | memset(_colorBuffer, 0, sizeof(color4) * _particleMaxCount); |
---|
[2096] | 220 | |
---|
[3492] | 221 | _positionBuffer = new vrmath::Vector3f[_particleMaxCount]; |
---|
[2805] | 222 | _vertices = new RenderVertexArray(_particleMaxCount, 3, GL_FLOAT); |
---|
[2096] | 223 | |
---|
[2805] | 224 | srand(time(0)); |
---|
[2096] | 225 | |
---|
[2805] | 226 | /* |
---|
| 227 | // TBD.. |
---|
| 228 | glGenBuffersARB(1, &_colorBufferID); |
---|
| 229 | glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
| 230 | glBufferDataARB(GL_ARRAY_BUFFER, _width * _height * 4, _colorBuffer, GL_STREAM_DRAW_ARB); // undefined data |
---|
| 231 | glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
| 232 | */ |
---|
[2096] | 233 | |
---|
[2805] | 234 | _flowWidth = fieldWidth; |
---|
| 235 | _flowHeight = fieldHeight; |
---|
| 236 | _flowDepth = fieldDepth; |
---|
[2096] | 237 | |
---|
[2805] | 238 | float min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ; |
---|
| 239 | int index = fileName.rfind('.'); |
---|
| 240 | std::string ext = fileName.substr(index + 1, fileName.size() - (index + 1)); |
---|
[2807] | 241 | float *data = 0; |
---|
[2096] | 242 | |
---|
[2805] | 243 | if (this->isTimeVaryingField()) { |
---|
| 244 | axisScaleX = _flowWidth; |
---|
| 245 | axisScaleY = _flowHeight; |
---|
| 246 | axisScaleZ = _flowDepth; |
---|
| 247 | _fileNameFormat = fileName; |
---|
| 248 | for (int i = 0; i < CircularFifo<float*, 10>::Capacity; ++i) { |
---|
| 249 | _queue.array[i] = new float[_flowWidth * _flowHeight * _flowDepth * 4]; |
---|
| 250 | } |
---|
[1704] | 251 | |
---|
[2805] | 252 | // INSOO |
---|
| 253 | // TBD |
---|
| 254 | min = 0; |
---|
| 255 | max = 234.99; |
---|
| 256 | } else { |
---|
| 257 | if (ext == "dx") { |
---|
| 258 | data = (float*) LoadFlowDx(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ); |
---|
| 259 | } else if (ext == "raw") { |
---|
| 260 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 0, false); |
---|
| 261 | //data = (float*) LoadProcessedFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, axisScaleX, axisScaleY, axisScaleZ); |
---|
| 262 | #ifdef notdef |
---|
| 263 | } else if (ext == "raws") { |
---|
| 264 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 5 * sizeof(int), true); |
---|
| 265 | } else if (ext == "data") { |
---|
| 266 | data = (float*) LoadFlowRaw(fileName.c_str(), _flowWidth, _flowHeight, _flowDepth, min, max, nonzero_min, axisScaleX, axisScaleY, axisScaleZ, 0, true); |
---|
[2807] | 267 | #endif |
---|
[2805] | 268 | } |
---|
[3492] | 269 | //_criticalPoints = find_critical_points((vrmath::Vector4f*) data, _flowWidth, _flowHeight, _flowDepth); |
---|
| 270 | //algorithm_test((vrmath::Vector4f*) data, _flowWidth, _flowHeight, _flowDepth); |
---|
[2805] | 271 | } |
---|
[2096] | 272 | |
---|
[2805] | 273 | _scalex = 1; |
---|
| 274 | _scaley = axisScaleY / axisScaleX; |
---|
| 275 | _scalez = axisScaleZ / axisScaleX; |
---|
| 276 | _maxVelocityScale = max; |
---|
[2096] | 277 | |
---|
[2805] | 278 | if (!this->isTimeVaryingField()) { |
---|
[2857] | 279 | Texture3D *flow = new Texture3D(_flowWidth, _flowHeight, _flowDepth, |
---|
| 280 | GL_FLOAT, GL_LINEAR, 4, data); |
---|
| 281 | _curVectorFieldID = flow->id(); |
---|
[2805] | 282 | _vectorFieldIDs.push_back(_curVectorFieldID); |
---|
| 283 | } else { |
---|
| 284 | for (int i = 0; i < 3; ++i) { |
---|
[2857] | 285 | Texture3D *flow = new Texture3D(_flowWidth, _flowHeight, _flowDepth, |
---|
| 286 | GL_FLOAT, GL_LINEAR, 4, data); |
---|
[2805] | 287 | _vectorFields.push_back(flow); |
---|
[2857] | 288 | _vectorFieldIDs.push_back(flow->id()); |
---|
[2805] | 289 | } |
---|
[2857] | 290 | _curVectorFieldID = _vectorFieldIDs[0]; |
---|
[2805] | 291 | } |
---|
[2096] | 292 | |
---|
[3463] | 293 | std::string path = FilePath::getInstance()->getPath("arrows.bmp"); |
---|
[2964] | 294 | |
---|
[2857] | 295 | if (!path.empty()) { |
---|
| 296 | ImageLoader *loader = ImageLoaderFactory::getInstance()->createLoader("bmp"); |
---|
| 297 | if (loader != NULL) { |
---|
| 298 | #ifdef USE_RGBA_ARROW |
---|
| 299 | Image *image = loader->load(path.c_str(), Image::IMG_RGBA); |
---|
| 300 | #else |
---|
| 301 | Image *image = loader->load(path.c_str(), Image::IMG_RGB); |
---|
| 302 | #endif |
---|
| 303 | if (image != NULL) { |
---|
| 304 | unsigned char *bytes = (unsigned char *)image->getImageBuffer(); |
---|
| 305 | if (bytes != NULL) { |
---|
| 306 | #ifdef USE_RGBA_ARROW |
---|
| 307 | _arrows = new Texture2D(image->getWidth(), image->getHeight(), |
---|
| 308 | GL_UNSIGNED_BYTE, GL_LINEAR, 4, NULL); |
---|
| 309 | #else |
---|
| 310 | _arrows = new Texture2D(image->getWidth(), image->getHeight(), |
---|
| 311 | GL_UNSIGNED_BYTE, GL_LINEAR, 3, NULL); |
---|
| 312 | #endif |
---|
| 313 | _arrows->setWrapS(GL_MIRRORED_REPEAT); |
---|
| 314 | _arrows->setWrapT(GL_MIRRORED_REPEAT); |
---|
| 315 | _arrows->initialize(image->getImageBuffer()); |
---|
| 316 | } |
---|
| 317 | delete image; |
---|
| 318 | } else { |
---|
[3452] | 319 | ERROR("Failed to load image: arrows.bmp"); |
---|
[2857] | 320 | } |
---|
| 321 | delete loader; |
---|
[2807] | 322 | } else { |
---|
[3452] | 323 | ERROR("Couldn't find loader for arrows.bmp"); |
---|
[2807] | 324 | } |
---|
[2857] | 325 | } else { |
---|
[3452] | 326 | ERROR("Couldn't find path to arrows.bmp"); |
---|
[2807] | 327 | } |
---|
[1704] | 328 | |
---|
| 329 | #ifdef TEST |
---|
[2805] | 330 | MakeSphereTexture(); |
---|
[1704] | 331 | #endif |
---|
[2096] | 332 | |
---|
[2805] | 333 | glGenBuffersARB(1, &_particleInfoBufferID); |
---|
| 334 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
---|
| 335 | glBufferDataARB(GL_ARRAY_BUFFER_ARB, _particleMaxCount * 4 * sizeof(float), 0, GL_DYNAMIC_DRAW); |
---|
| 336 | glVertexAttribPointerARB(8, 4, GL_FLOAT, GL_FALSE, 0, 0); // 8 = texcoord0 |
---|
| 337 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); |
---|
[2096] | 338 | |
---|
[2805] | 339 | // TBD.. |
---|
| 340 | initStreamlines(_width, _height); |
---|
| 341 | initInitPosTex(); |
---|
| 342 | |
---|
| 343 | initShaders(); |
---|
| 344 | createRenderTargets(); |
---|
| 345 | createSortRenderTargets(); |
---|
| 346 | createStreamlineRenderTargets(); |
---|
| 347 | |
---|
| 348 | if (this->isTimeVaryingField()) { |
---|
| 349 | pthread_t _threads; |
---|
| 350 | pthread_attr_t pthread_custom_attr; |
---|
| 351 | pthread_attr_init(&pthread_custom_attr); |
---|
| 352 | pthread_create(&_threads, &pthread_custom_attr, dataLoadMain, (void *) this); |
---|
| 353 | } |
---|
[2096] | 354 | } |
---|
| 355 | |
---|
| 356 | void ParticleSystem::initInitPosTex() |
---|
| 357 | { |
---|
[2805] | 358 | glGenFramebuffersEXT(1, &_initPos_fbo); |
---|
[2096] | 359 | glGenTextures(1, &_initPosTex); |
---|
| 360 | |
---|
| 361 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _initPos_fbo); |
---|
| 362 | |
---|
[2805] | 363 | glViewport(0, 0, _width, _height); |
---|
| 364 | glMatrixMode(GL_PROJECTION); |
---|
| 365 | glLoadIdentity(); |
---|
| 366 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 367 | glMatrixMode(GL_MODELVIEW); |
---|
| 368 | glLoadIdentity(); |
---|
| 369 | |
---|
[2884] | 370 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
| 371 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
---|
| 372 | glTexParameterf(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
---|
| 373 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
---|
| 374 | glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
---|
| 375 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
---|
[2805] | 376 | _width, _height, 0, GL_RGB, GL_FLOAT, NULL); |
---|
[2884] | 377 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); |
---|
[2096] | 378 | |
---|
| 379 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2884] | 380 | GL_TEXTURE_RECTANGLE_ARB, _initPosTex, 0); |
---|
[2805] | 381 | |
---|
[2096] | 382 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 383 | } |
---|
| 384 | |
---|
| 385 | void ParticleSystem::initStreamlines(int width, int height) |
---|
| 386 | { |
---|
[2805] | 387 | _atlas_x = 32; |
---|
| 388 | _atlas_y = 32; |
---|
[2096] | 389 | |
---|
[2805] | 390 | _atlasWidth = width * _atlas_x; |
---|
| 391 | _atlasHeight = height * _atlas_y; |
---|
| 392 | _maxAtlasCount = _atlas_x * _atlas_y; |
---|
[2096] | 393 | |
---|
[2805] | 394 | _stepSizeStreamline = 1; |
---|
| 395 | _curStepCount = 0; |
---|
| 396 | _particleCount = width * height; |
---|
[2096] | 397 | |
---|
[2805] | 398 | _currentStreamlineOffset = 0; |
---|
| 399 | _currentStreamlineIndex = 0; |
---|
| 400 | _streamVertices = new RenderVertexArray(_atlasWidth*_atlasHeight * 2, 3, GL_FLOAT); |
---|
[2096] | 401 | |
---|
[2805] | 402 | _maxIndexBufferSize = _width * _height * _atlas_x * _atlas_y; |
---|
| 403 | _indexBuffer = new unsigned int[_maxIndexBufferSize * 2]; |
---|
| 404 | unsigned int* pindex = _indexBuffer; |
---|
| 405 | int ax, ay, old_ax = 0, old_ay = 0; |
---|
| 406 | for (unsigned int i = 1; i < _maxAtlasCount; ++i) { |
---|
| 407 | ax = (i % _atlas_x) * width; |
---|
| 408 | ay = (i / _atlas_x) * height; |
---|
[2096] | 409 | |
---|
[2805] | 410 | for (int y = 0; y < height ; ++y) { |
---|
| 411 | for (int x = 0; x < width; ++x) { |
---|
| 412 | *pindex = (old_ay + y) * _atlasWidth + old_ax + x; ++pindex; |
---|
| 413 | *pindex = (ay + y) * _atlasWidth + ax + x; ++pindex; |
---|
| 414 | } |
---|
| 415 | } |
---|
| 416 | |
---|
| 417 | old_ax = ax; |
---|
| 418 | old_ay = ay; |
---|
| 419 | } |
---|
[2096] | 420 | } |
---|
| 421 | |
---|
| 422 | void ParticleSystem::initShaders() |
---|
| 423 | { |
---|
[2805] | 424 | // TBD... |
---|
[2870] | 425 | _context = NvShader::getCgContext(); |
---|
[2096] | 426 | |
---|
[3463] | 427 | std::string path = FilePath::getInstance()->getPath("distance.cg"); |
---|
[2805] | 428 | _distanceInitFP = |
---|
| 429 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 430 | CG_PROFILE_FP40, "initSortIndex", NULL); |
---|
[2805] | 431 | cgGLLoadProgram(_distanceInitFP); |
---|
[2096] | 432 | |
---|
[2805] | 433 | _distanceSortFP = |
---|
| 434 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 435 | CG_PROFILE_FP40, "computeDistance", NULL); |
---|
[2805] | 436 | _viewPosParam = cgGetNamedParameter(_distanceSortFP, "viewerPosition"); |
---|
| 437 | cgGLLoadProgram(_distanceSortFP); |
---|
[2096] | 438 | |
---|
[2805] | 439 | _distanceSortLookupFP = |
---|
| 440 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 441 | CG_PROFILE_FP40, "lookupPosition", NULL); |
---|
[2805] | 442 | cgGLLoadProgram(_distanceSortLookupFP); |
---|
[2096] | 443 | |
---|
[3463] | 444 | path = FilePath::getInstance()->getPath("mergesort.cg"); |
---|
[2805] | 445 | _sortRecursionFP = |
---|
| 446 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 447 | CG_PROFILE_FP40, "mergeSortRecursion", NULL); |
---|
[2805] | 448 | cgGLLoadProgram(_sortRecursionFP); |
---|
[2096] | 449 | |
---|
[2805] | 450 | _srSizeParam = cgGetNamedParameter(_sortRecursionFP, "_Size"); |
---|
| 451 | _srStepParam = cgGetNamedParameter(_sortRecursionFP, "_Step"); |
---|
| 452 | _srCountParam = cgGetNamedParameter(_sortRecursionFP, "_Count"); |
---|
[2096] | 453 | |
---|
[2805] | 454 | _sortEndFP = |
---|
| 455 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 456 | CG_PROFILE_FP40, "mergeSortEnd", NULL); |
---|
[2805] | 457 | cgGLLoadProgram(_sortEndFP); |
---|
[2096] | 458 | |
---|
[2805] | 459 | _seSizeParam = cgGetNamedParameter(_sortEndFP, "size"); |
---|
| 460 | _seStepParam = cgGetNamedParameter(_sortEndFP, "step"); |
---|
[2096] | 461 | |
---|
[3463] | 462 | path = FilePath::getInstance()->getPath("passthrough.cg"); |
---|
[2805] | 463 | _passthroughFP = |
---|
| 464 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 465 | CG_PROFILE_FP40, "main", NULL); |
---|
[2805] | 466 | cgGLLoadProgram(_passthroughFP); |
---|
[2096] | 467 | |
---|
[2805] | 468 | _scaleParam = cgGetNamedParameter(_passthroughFP, "scale"); |
---|
| 469 | _biasParam = cgGetNamedParameter(_passthroughFP, "bias"); |
---|
[2096] | 470 | |
---|
[3463] | 471 | path = FilePath::getInstance()->getPath("moveparticles.cg"); |
---|
[2805] | 472 | _moveParticlesFP = |
---|
| 473 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 474 | CG_PROFILE_FP40, "main", NULL); |
---|
[2805] | 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"); |
---|
[2096] | 482 | |
---|
[3463] | 483 | path = FilePath::getInstance()->getPath("particlevp.cg"); |
---|
[2805] | 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"); |
---|
[2096] | 492 | |
---|
[3463] | 493 | path = FilePath::getInstance()->getPath("particlefp.cg"); |
---|
[2805] | 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 | |
---|
[3463] | 500 | path = FilePath::getInstance()->getPath("moveparticles.cg"); |
---|
[2805] | 501 | _initParticlePosFP = |
---|
| 502 | cgCreateProgramFromFile(_context, CG_SOURCE, path.c_str(), |
---|
[2882] | 503 | CG_PROFILE_FP40, "initParticlePosMain", NULL); |
---|
[2805] | 504 | cgGLLoadProgram(_initParticlePosFP); |
---|
| 505 | _ipVectorFieldParam = cgGetNamedParameter(_moveParticlesFP, "vfield"); |
---|
[2096] | 506 | } |
---|
| 507 | |
---|
| 508 | void ParticleSystem::passThoughPositions() |
---|
| 509 | { |
---|
[2805] | 510 | cgGLBindProgram(_passthroughFP); |
---|
[2882] | 511 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 512 | |
---|
[2805] | 513 | cgGLSetParameter4f(_scaleParam, 1.0, 1.0, 1.0, 1.0); |
---|
| 514 | cgGLSetParameter4f(_biasParam, 0.0, 0.0, 0.0, 0.0); |
---|
[2096] | 515 | |
---|
[2884] | 516 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
---|
[2805] | 517 | _width, _height, 0, GL_RGB, GL_FLOAT, (GLfloat *) _positionBuffer); |
---|
[2096] | 518 | |
---|
[2805] | 519 | drawQuad(); |
---|
| 520 | |
---|
[2882] | 521 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 522 | } |
---|
| 523 | |
---|
| 524 | void ParticleSystem::resetStreamlines() |
---|
| 525 | { |
---|
[2805] | 526 | _currentStreamlineIndex = 0; |
---|
| 527 | _currentStreamlineOffset = 0; |
---|
| 528 | _curStepCount = 0; |
---|
[2096] | 529 | } |
---|
| 530 | |
---|
[1704] | 531 | void ParticleSystem::reset() |
---|
[2096] | 532 | { |
---|
[2805] | 533 | _currentTime = 0.0f; |
---|
| 534 | _sortBegin = 0; |
---|
| 535 | _sortEnd = _sortPassesPerFrame; |
---|
[2096] | 536 | |
---|
[2805] | 537 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 538 | glMatrixMode(GL_PROJECTION); |
---|
| 539 | glPushMatrix(); |
---|
| 540 | glMatrixMode(GL_MODELVIEW); |
---|
[2096] | 541 | |
---|
[2805] | 542 | resetStreamlines(); |
---|
[2096] | 543 | |
---|
[2805] | 544 | unsigned int maxsize = _userDefinedParticleMaxCount; |
---|
[1704] | 545 | |
---|
[2805] | 546 | while (!_availableIndices.empty()) |
---|
| 547 | _availableIndices.pop(); |
---|
| 548 | while (!_activeParticles.empty()) |
---|
| 549 | _activeParticles.pop(); |
---|
[2096] | 550 | |
---|
[2805] | 551 | _activeParticles.reserve(maxsize); |
---|
| 552 | _availableIndices.reserve(maxsize); |
---|
[2096] | 553 | |
---|
[2805] | 554 | for (unsigned int i = 0; i < maxsize; i++) |
---|
| 555 | _availableIndices.push(i); |
---|
[2096] | 556 | |
---|
[2805] | 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 | } |
---|
[2096] | 563 | |
---|
[2805] | 564 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
---|
| 565 | Particle* pinfo = (Particle*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
---|
[2096] | 566 | |
---|
[2805] | 567 | for (int i = 0; i < _particleMaxCount; i++) { |
---|
| 568 | pinfo[i] = _particles[i]; |
---|
| 569 | } |
---|
[2807] | 570 | |
---|
[2805] | 571 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
---|
[2096] | 572 | |
---|
[2805] | 573 | // POSITION |
---|
[3492] | 574 | memset(_positionBuffer, 0, sizeof(vrmath::Vector3f) * _width * _height); |
---|
[2805] | 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 | } |
---|
[2096] | 583 | |
---|
[2884] | 584 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
| 585 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB32F_ARB, |
---|
[2096] | 586 | _width, _height, 0, GL_RGB, GL_FLOAT, (float*)_positionBuffer); |
---|
[2884] | 587 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); |
---|
[2096] | 588 | |
---|
[2805] | 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); |
---|
[2096] | 599 | |
---|
[2805] | 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); |
---|
[2096] | 612 | |
---|
| 613 | |
---|
[2805] | 614 | /// TBD... |
---|
| 615 | //DeathTimePBuffer->BeginCapture(); |
---|
| 616 | //glClear(GL_COLOR_BUFFER_BIT); |
---|
| 617 | //DeathTimePBuffer->EndCapture(); |
---|
[2096] | 618 | |
---|
[2805] | 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(); |
---|
[2096] | 628 | |
---|
[2805] | 629 | cgGLBindProgram(_distanceInitFP); |
---|
[2882] | 630 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 631 | |
---|
[2805] | 632 | drawQuad(); |
---|
[2096] | 633 | |
---|
[2882] | 634 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2805] | 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(); |
---|
[2096] | 645 | } |
---|
| 646 | |
---|
| 647 | void ParticleSystem::createRenderTargets() |
---|
| 648 | { |
---|
[2805] | 649 | glGenFramebuffersEXT(2, psys_fbo); |
---|
[2096] | 650 | glGenTextures(2, psys_tex); |
---|
| 651 | |
---|
| 652 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
| 653 | |
---|
[2805] | 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 | |
---|
[2884] | 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); |
---|
[2096] | 666 | |
---|
[2884] | 667 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA32F_ARB, |
---|
[2805] | 668 | _width, _height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
[2096] | 669 | |
---|
| 670 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2884] | 671 | GL_TEXTURE_RECTANGLE_ARB, psys_tex[0], 0); |
---|
[2805] | 672 | |
---|
[2096] | 673 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
| 674 | |
---|
[2884] | 675 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[1]); |
---|
[2805] | 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(); |
---|
[2096] | 682 | |
---|
[2884] | 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); |
---|
[2096] | 687 | |
---|
[2884] | 688 | glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA32F_ARB, |
---|
[2805] | 689 | _width, _height, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
[2096] | 690 | |
---|
| 691 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2884] | 692 | GL_TEXTURE_RECTANGLE_ARB, psys_tex[1], 0); |
---|
[2096] | 693 | |
---|
| 694 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 695 | } |
---|
| 696 | |
---|
[2884] | 697 | //#define ATLAS_TEXTURE_TARGET GL_TEXTURE_RECTANGLE_ARB |
---|
| 698 | //#define ATLAS_INTERNAL_TYPE GL_RGBA32F_ARB |
---|
[2096] | 699 | #define ATLAS_TEXTURE_TARGET GL_TEXTURE_2D |
---|
| 700 | #define ATLAS_INTERNAL_TYPE GL_RGBA |
---|
| 701 | |
---|
| 702 | void ParticleSystem::createStreamlineRenderTargets() |
---|
| 703 | { |
---|
[2805] | 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(); |
---|
[2096] | 713 | |
---|
[2805] | 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); |
---|
[2096] | 719 | |
---|
[2805] | 720 | glTexImage2D(ATLAS_TEXTURE_TARGET, 0, ATLAS_INTERNAL_TYPE, |
---|
| 721 | _atlasWidth, _atlasHeight, 0, GL_RGBA, GL_FLOAT, NULL); |
---|
[2096] | 722 | |
---|
[2805] | 723 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
| 724 | ATLAS_TEXTURE_TARGET, _atlas_tex, 0); |
---|
[2096] | 725 | |
---|
[2805] | 726 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2096] | 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 |
---|
[2884] | 732 | #define SORT_TEXTURE_INNER_FORMAT GL_RGB32F_ARB |
---|
[2096] | 733 | |
---|
| 734 | void ParticleSystem::createSortRenderTargets() |
---|
| 735 | { |
---|
[2805] | 736 | glGenFramebuffersEXT(2, sort_fbo); |
---|
[2096] | 737 | glGenTextures(2, sort_tex); |
---|
| 738 | |
---|
| 739 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[0]); |
---|
[2805] | 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(); |
---|
[2096] | 746 | |
---|
[2884] | 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, |
---|
[2805] | 753 | _width, _height, 0, SORT_TEXTURE_FORMAT, GL_FLOAT, NULL); |
---|
| 754 | |
---|
[2096] | 755 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2884] | 756 | GL_TEXTURE_RECTANGLE_ARB, sort_tex[0], 0); |
---|
[2096] | 757 | |
---|
| 758 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[1]); |
---|
[2805] | 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(); |
---|
[2096] | 765 | |
---|
[2884] | 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, |
---|
[2805] | 772 | _width, _height, 0, SORT_TEXTURE_FORMAT, GL_FLOAT, NULL); |
---|
[2096] | 773 | |
---|
| 774 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2884] | 775 | GL_TEXTURE_RECTANGLE_ARB, sort_tex[1], 0); |
---|
[2805] | 776 | |
---|
[2096] | 777 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 778 | } |
---|
| 779 | |
---|
| 780 | ParticleSystem::~ParticleSystem() |
---|
| 781 | { |
---|
[2805] | 782 | std::vector<ParticleEmitter*>::iterator iter; |
---|
| 783 | for (iter = _emitters.begin(); iter != _emitters.end(); ++iter) |
---|
| 784 | delete (*iter); |
---|
[2096] | 785 | |
---|
[2805] | 786 | // Particle Position |
---|
| 787 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[0]); |
---|
[2096] | 788 | glDeleteTextures(1, psys_tex); |
---|
| 789 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[1]); |
---|
| 790 | glDeleteTextures(1, psys_tex+1); |
---|
[2805] | 791 | glDeleteFramebuffersEXT(2, psys_fbo); |
---|
[2096] | 792 | |
---|
[2805] | 793 | // Sort |
---|
| 794 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[0]); |
---|
[2096] | 795 | glDeleteTextures(1, sort_tex); |
---|
| 796 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[1]); |
---|
| 797 | glDeleteTextures(1, sort_tex+1); |
---|
[2805] | 798 | glDeleteFramebuffersEXT(2, sort_fbo); |
---|
[2096] | 799 | |
---|
[2805] | 800 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, velocity_fbo[0]); |
---|
[2096] | 801 | glDeleteTextures(1, velocity_tex); |
---|
| 802 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, velocity_fbo[1]); |
---|
| 803 | glDeleteTextures(1, velocity_tex+1); |
---|
[2805] | 804 | glDeleteFramebuffersEXT(2, velocity_fbo); |
---|
[2096] | 805 | |
---|
[2805] | 806 | if (_vertices) delete _vertices; |
---|
[2096] | 807 | |
---|
[2805] | 808 | delete [] _particles; |
---|
| 809 | delete [] _positionBuffer; |
---|
| 810 | delete [] _colorBuffer; |
---|
[2096] | 811 | |
---|
[2805] | 812 | if (_arrows) delete _arrows; |
---|
[2096] | 813 | |
---|
[2805] | 814 | // STREAM LINE |
---|
| 815 | if (_streamVertices) delete _streamVertices; |
---|
| 816 | if (_indexBuffer) delete _indexBuffer; |
---|
[2096] | 817 | |
---|
[2805] | 818 | cgDestroyProgram(_distanceInitFP); |
---|
[2096] | 819 | |
---|
[2805] | 820 | cgDestroyParameter(_viewPosParam); |
---|
| 821 | cgDestroyProgram(_distanceSortFP); |
---|
[2096] | 822 | |
---|
[2805] | 823 | cgDestroyProgram(_distanceSortLookupFP); |
---|
[2096] | 824 | |
---|
[2805] | 825 | cgDestroyParameter(_scaleParam); |
---|
| 826 | cgDestroyParameter(_biasParam); |
---|
| 827 | cgDestroyProgram(_passthroughFP); |
---|
[2096] | 828 | |
---|
[2805] | 829 | cgDestroyParameter(_srSizeParam); |
---|
| 830 | cgDestroyParameter(_srStepParam); |
---|
| 831 | cgDestroyParameter(_srCountParam); |
---|
[2096] | 832 | |
---|
[2805] | 833 | cgDestroyProgram(_sortRecursionFP); |
---|
[2096] | 834 | |
---|
[2805] | 835 | cgDestroyParameter(_seSizeParam); |
---|
| 836 | cgDestroyParameter(_seStepParam); |
---|
| 837 | cgDestroyProgram(_sortEndFP); |
---|
[2096] | 838 | |
---|
[2805] | 839 | cgDestroyParameter(_mpTimeScale); |
---|
| 840 | cgDestroyParameter(_mpVectorField); |
---|
| 841 | cgDestroyParameter(_mpUseInitTex); |
---|
| 842 | cgDestroyParameter(_mpCurrentTime); |
---|
| 843 | cgDestroyProgram(_moveParticlesFP); |
---|
[2096] | 844 | |
---|
[2805] | 845 | cgDestroyParameter(_ipVectorFieldParam); |
---|
| 846 | cgDestroyProgram(_initParticlePosFP); |
---|
[2096] | 847 | |
---|
[2805] | 848 | cgDestroyParameter(_mvpParticleParam); |
---|
| 849 | cgDestroyParameter(_mvParticleParam); |
---|
| 850 | cgDestroyParameter(_mvTanHalfFOVParam); |
---|
| 851 | cgDestroyParameter(_mvCurrentTimeParam); |
---|
| 852 | cgDestroyProgram(_particleFP); |
---|
| 853 | |
---|
| 854 | cgDestroyParameter(_vectorParticleParam); |
---|
| 855 | cgDestroyProgram(_particleVP); |
---|
[2096] | 856 | } |
---|
| 857 | |
---|
| 858 | bool ParticleSystem::isEnabled(EnableEnum enabled) |
---|
| 859 | { |
---|
[2805] | 860 | switch (enabled) { |
---|
| 861 | case PS_SORT : |
---|
| 862 | return _sortEnabled; |
---|
| 863 | break; |
---|
[2818] | 864 | case PS_GLYPH : |
---|
| 865 | return _glyphEnabled; |
---|
[2805] | 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; |
---|
[2096] | 876 | } |
---|
| 877 | |
---|
| 878 | void ParticleSystem::enable(EnableEnum enabled) |
---|
| 879 | { |
---|
[2805] | 880 | switch (enabled) { |
---|
| 881 | case PS_SORT : |
---|
| 882 | _sortEnabled = true; |
---|
| 883 | break; |
---|
[2818] | 884 | case PS_GLYPH : |
---|
| 885 | _glyphEnabled = true; |
---|
[2805] | 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 | } |
---|
[2096] | 897 | } |
---|
| 898 | |
---|
| 899 | void ParticleSystem::disable(EnableEnum enabled) |
---|
| 900 | { |
---|
[2805] | 901 | switch (enabled) { |
---|
| 902 | case PS_SORT : |
---|
| 903 | _sortEnabled = false; |
---|
| 904 | break; |
---|
[2818] | 905 | case PS_GLYPH : |
---|
| 906 | _glyphEnabled = false; |
---|
[2805] | 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 | } |
---|
[2096] | 918 | } |
---|
| 919 | |
---|
| 920 | void ParticleSystem::advectStreamlines() |
---|
| 921 | { |
---|
[2805] | 922 | glDisable(GL_BLEND); |
---|
| 923 | glDisable(GL_DEPTH_TEST); |
---|
[2807] | 924 | |
---|
[2805] | 925 | //glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
| 926 | //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
[2096] | 927 | |
---|
[2805] | 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(); |
---|
[2096] | 937 | |
---|
[2884] | 938 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2096] | 939 | |
---|
[2805] | 940 | cgGLBindProgram(_moveParticlesFP); |
---|
[2882] | 941 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2805] | 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); |
---|
[2096] | 949 | |
---|
[2805] | 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); |
---|
[2884] | 954 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
[2805] | 955 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 956 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
[2805] | 957 | drawQuad(); |
---|
| 958 | swap(_currentPosIndex, _destPosIndex); |
---|
| 959 | } |
---|
[2096] | 960 | |
---|
[2805] | 961 | cgGLDisableTextureParameter(_mpVectorField); |
---|
[2884] | 962 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2882] | 963 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 964 | |
---|
[2805] | 965 | glMatrixMode(GL_PROJECTION); |
---|
| 966 | glPopMatrix(); |
---|
| 967 | glMatrixMode(GL_MODELVIEW); |
---|
| 968 | glPopMatrix(); |
---|
| 969 | glPopAttrib(); |
---|
| 970 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2096] | 971 | |
---|
[2805] | 972 | if (_currentStreamlineIndex < _maxAtlasCount) { |
---|
| 973 | int xoffset = (_currentStreamlineIndex % _atlas_x) * _width; |
---|
| 974 | int yoffset = (_currentStreamlineIndex / _atlas_x) * _height; |
---|
[2096] | 975 | |
---|
[2805] | 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 | } |
---|
[2096] | 995 | } |
---|
| 996 | |
---|
| 997 | bool ParticleSystem::advect(float deltaT, float camx, float camy, float camz) |
---|
| 998 | { |
---|
[2805] | 999 | static bool firstLoad = true; |
---|
| 1000 | if (this->isTimeVaryingField()) { |
---|
[2857] | 1001 | static float oldTime = (float)clock()/(float)CLOCKS_PER_SEC; |
---|
[2807] | 1002 | #ifdef WANT_TRACE |
---|
[2805] | 1003 | static int index = 0; |
---|
[2807] | 1004 | #endif |
---|
[2857] | 1005 | float time = (float)clock()/(float)CLOCKS_PER_SEC; |
---|
[2805] | 1006 | if ((time - oldTime) > 2.0) { |
---|
| 1007 | if (!_queue.isEmpty()) { |
---|
[2857] | 1008 | float *data = NULL; |
---|
[2805] | 1009 | if (_queue.top(data)) { |
---|
[2807] | 1010 | #ifdef WANT_TRACE |
---|
[2805] | 1011 | float t = clock() /(float) CLOCKS_PER_SEC; |
---|
[2814] | 1012 | #endif |
---|
[2857] | 1013 | _vectorFields[0]->update(data); |
---|
[2814] | 1014 | #ifdef WANT_TRACE |
---|
[2805] | 1015 | float ti = clock() / (float) CLOCKS_PER_SEC; |
---|
[3452] | 1016 | TRACE("updatePixels time: %f", ti - t); |
---|
[2807] | 1017 | #endif |
---|
[2805] | 1018 | _queue.pop(); |
---|
| 1019 | oldTime = time; |
---|
[2096] | 1020 | |
---|
[2805] | 1021 | firstLoad = false; |
---|
[3452] | 1022 | TRACE("%d bound", index++); |
---|
[2805] | 1023 | } |
---|
| 1024 | } |
---|
| 1025 | } |
---|
| 1026 | if (firstLoad) return false; |
---|
| 1027 | } |
---|
[2096] | 1028 | |
---|
[2805] | 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; |
---|
[2096] | 1037 | |
---|
[2805] | 1038 | glDisable(GL_BLEND); |
---|
| 1039 | glDisable(GL_DEPTH_TEST); |
---|
[2096] | 1040 | |
---|
[2805] | 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(); |
---|
[2096] | 1050 | |
---|
[2884] | 1051 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2096] | 1052 | |
---|
[2805] | 1053 | cgGLBindProgram(_moveParticlesFP); |
---|
[2882] | 1054 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1055 | |
---|
[2805] | 1056 | // INSOO |
---|
| 1057 | // TIME SCALE |
---|
| 1058 | |
---|
| 1059 | cgGLSetParameter1f(_mpTimeScale, 0.005); |
---|
[2096] | 1060 | |
---|
[2805] | 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); |
---|
[2884] | 1071 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
[2805] | 1072 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 1073 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
[2805] | 1074 | drawQuad(); |
---|
| 1075 | swap(_currentPosIndex, _destPosIndex); |
---|
| 1076 | } |
---|
| 1077 | cgGLDisableTextureParameter(_mpVectorField); |
---|
[2096] | 1078 | |
---|
[2805] | 1079 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 1080 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2805] | 1081 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1082 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2096] | 1083 | |
---|
[2884] | 1084 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2882] | 1085 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1086 | |
---|
[2805] | 1087 | glMatrixMode(GL_PROJECTION); |
---|
| 1088 | glPopMatrix(); |
---|
| 1089 | glMatrixMode(GL_MODELVIEW); |
---|
| 1090 | glPopMatrix(); |
---|
| 1091 | glPopAttrib(); |
---|
| 1092 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2096] | 1093 | |
---|
[2805] | 1094 | if (_sortEnabled) { |
---|
| 1095 | sort(); |
---|
[2096] | 1096 | |
---|
[2805] | 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 | } |
---|
[2096] | 1105 | |
---|
[2805] | 1106 | // NEW PARTICLES |
---|
| 1107 | for (unsigned int i = 0; i < _emitters.size(); ++i) { |
---|
| 1108 | // TBD.. |
---|
[2814] | 1109 | unsigned int numOfNewParticles = (unsigned int)(randomRange(_emitters[i]->_minNumOfNewParticles, _emitters[i]->_maxNumOfNewParticles) * deltaT); |
---|
[2805] | 1110 | for (unsigned int k = 0; k < numOfNewParticles; ++k) { |
---|
[3492] | 1111 | vrmath::Vector3f position = _emitters[i]->_position; |
---|
[2805] | 1112 | position += _emitters[i]->_maxPositionOffset * |
---|
[3492] | 1113 | vrmath::Vector3f(randomRange(-1.0f, 1.0f), randomRange(-1.0f, 1.0f), randomRange(-1.0f, 1.0f)); |
---|
[2096] | 1114 | |
---|
[2805] | 1115 | float lifetime = randomRange(_emitters[i]->_minLifeTime, _emitters[i]->_maxLifeTime); |
---|
[2096] | 1116 | |
---|
[2805] | 1117 | // TBD.. |
---|
[3492] | 1118 | allocateParticle(position, vrmath::Vector3f(0.0f, 0.0f, 0.0f), lifetime, 1 - (float) k / numOfNewParticles); |
---|
[2805] | 1119 | } |
---|
| 1120 | } |
---|
[2096] | 1121 | |
---|
[2805] | 1122 | initNewParticles(); |
---|
[1704] | 1123 | |
---|
[2805] | 1124 | _currentTime += deltaT; |
---|
[2096] | 1125 | |
---|
[2805] | 1126 | cleanUpParticles(); |
---|
| 1127 | } |
---|
| 1128 | |
---|
| 1129 | return true; |
---|
[2096] | 1130 | } |
---|
| 1131 | |
---|
[3492] | 1132 | void ParticleSystem::allocateParticle(const vrmath::Vector3f& position, const vrmath::Vector3f& velocity, |
---|
[2805] | 1133 | float lifeTime, float initTimeStep) |
---|
[2096] | 1134 | { |
---|
[2805] | 1135 | if (_availableIndices.empty()) { |
---|
| 1136 | return; |
---|
| 1137 | } |
---|
[2096] | 1138 | |
---|
[2805] | 1139 | int index = _availableIndices.top(); |
---|
| 1140 | _availableIndices.pop(); |
---|
[2096] | 1141 | |
---|
[2805] | 1142 | ActiveParticle p; |
---|
| 1143 | p.index = index; |
---|
| 1144 | p.timeOfDeath = _currentTime + lifeTime; |
---|
| 1145 | _activeParticles.push(p); |
---|
[2096] | 1146 | |
---|
[2805] | 1147 | NewParticle newParticle; |
---|
| 1148 | newParticle.index = index; |
---|
| 1149 | newParticle.position = position; |
---|
| 1150 | newParticle.velocity = velocity; |
---|
| 1151 | newParticle.timeOfDeath = p.timeOfDeath; |
---|
| 1152 | newParticle.initTimeStep = initTimeStep; |
---|
[2096] | 1153 | |
---|
[2805] | 1154 | _newParticles.push_back(newParticle); |
---|
| 1155 | |
---|
| 1156 | _particles[index].timeOfBirth = _currentTime; |
---|
| 1157 | _particles[index].lifeTime = lifeTime; |
---|
[2096] | 1158 | } |
---|
| 1159 | |
---|
| 1160 | void ParticleSystem::initNewParticles() |
---|
| 1161 | { |
---|
[2805] | 1162 | ///////////////////////////// |
---|
| 1163 | // INIT NEW PARTICLE |
---|
| 1164 | glBindBufferARB(GL_ARRAY_BUFFER_ARB, _particleInfoBufferID); |
---|
| 1165 | Particle* pinfo = (Particle*) glMapBufferARB(GL_ARRAY_BUFFER, GL_WRITE_ONLY_ARB); |
---|
[2096] | 1166 | |
---|
[2805] | 1167 | std::vector<NewParticle>::iterator iter; |
---|
| 1168 | for (iter = _newParticles.begin(); iter != _newParticles.end(); ++iter) { |
---|
| 1169 | pinfo[iter->index] = _particles[iter->index]; |
---|
| 1170 | } |
---|
[2096] | 1171 | |
---|
[2805] | 1172 | glUnmapBufferARB(GL_ARRAY_BUFFER_ARB); |
---|
[2096] | 1173 | |
---|
[2805] | 1174 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
[2096] | 1175 | |
---|
[2805] | 1176 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1177 | glViewport(0, 0, _width, _height); |
---|
| 1178 | glMatrixMode(GL_PROJECTION); |
---|
| 1179 | glPushMatrix(); |
---|
| 1180 | glLoadIdentity(); |
---|
| 1181 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1182 | glMatrixMode(GL_MODELVIEW); |
---|
| 1183 | glPushMatrix(); |
---|
| 1184 | glLoadIdentity(); |
---|
[2096] | 1185 | |
---|
[2805] | 1186 | cgGLBindProgram(_initParticlePosFP); |
---|
[2882] | 1187 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2805] | 1188 | cgGLSetTextureParameter(_ipVectorFieldParam, _curVectorFieldID); |
---|
| 1189 | cgGLEnableTextureParameter(_ipVectorFieldParam); |
---|
| 1190 | // TBD.. |
---|
| 1191 | //glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
| 1192 | //VelocityPBuffers[VelocityCurrent]->Bind(); |
---|
[2096] | 1193 | |
---|
[2805] | 1194 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1195 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
| 1196 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_destPosIndex]); |
---|
[2096] | 1197 | |
---|
[2805] | 1198 | glBegin(GL_POINTS); |
---|
| 1199 | for (iter = _newParticles.begin(); iter != _newParticles.end(); iter++) { |
---|
[3452] | 1200 | //TRACE("[%d] %f %f %f", iter->index, iter->position.x,iter->position.y,iter->position.z); |
---|
[2805] | 1201 | glMultiTexCoord3f(GL_TEXTURE0, iter->position.x,iter->position.y,iter->position.z); |
---|
[2096] | 1202 | |
---|
[2805] | 1203 | // TBD.. |
---|
| 1204 | //glMultiTexCoord2f(GL_TEXTURE1_ARB, (float)(i->Index % Width), (float)(i->Index / Height)); |
---|
| 1205 | //glMultiTexCoord1f(GL_TEXTURE2_ARB, iter->initTimeStep); |
---|
| 1206 | |
---|
| 1207 | glVertex2f((float)(iter->index % _width), |
---|
| 1208 | (float)(iter->index / _height) + 1/* + offsetY*/ /* + offsetY shouldn't be */); |
---|
[3452] | 1209 | //TRACE("%f %f", (float) (iter->index % _width), (float)(iter->index / _width)); |
---|
[2805] | 1210 | } |
---|
| 1211 | glEnd(); |
---|
| 1212 | |
---|
[2884] | 1213 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2805] | 1214 | cgGLDisableTextureParameter(_ipVectorFieldParam); |
---|
[2882] | 1215 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2805] | 1216 | |
---|
| 1217 | glMatrixMode(GL_PROJECTION); |
---|
| 1218 | glPopMatrix(); |
---|
| 1219 | glMatrixMode(GL_MODELVIEW); |
---|
| 1220 | glPopMatrix(); |
---|
| 1221 | glPopAttrib(); |
---|
| 1222 | |
---|
| 1223 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2807] | 1224 | |
---|
[2805] | 1225 | // INIT NEW END |
---|
| 1226 | ///////////////////////////// |
---|
[2096] | 1227 | #if 1 |
---|
[2805] | 1228 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _initPos_fbo); |
---|
| 1229 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1230 | glViewport(0, 0, _width, _height); |
---|
| 1231 | glMatrixMode(GL_PROJECTION); |
---|
| 1232 | glPushMatrix(); |
---|
| 1233 | glLoadIdentity(); |
---|
| 1234 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1235 | glMatrixMode(GL_MODELVIEW); |
---|
| 1236 | glPushMatrix(); |
---|
| 1237 | glLoadIdentity(); |
---|
[2096] | 1238 | |
---|
[2805] | 1239 | cgGLBindProgram(_initParticlePosFP); |
---|
[2882] | 1240 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2805] | 1241 | cgGLSetTextureParameter(_ipVectorFieldParam, _curVectorFieldID); |
---|
| 1242 | cgGLEnableTextureParameter(_ipVectorFieldParam); |
---|
| 1243 | // TBD.. |
---|
| 1244 | //glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
| 1245 | //VelocityPBuffers[VelocityCurrent]->Bind(); |
---|
[2096] | 1246 | |
---|
[2805] | 1247 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1248 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
| 1249 | //glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _initPosTex); |
---|
| 1250 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_destPosIndex]); |
---|
[2096] | 1251 | |
---|
[2805] | 1252 | glBegin(GL_POINTS); |
---|
| 1253 | for (iter = _newParticles.begin(); iter != _newParticles.end(); iter++) { |
---|
[3452] | 1254 | //TRACE("[%d] %f %f %f", iter->index, iter->position.x,iter->position.y,iter->position.z); |
---|
[2805] | 1255 | glMultiTexCoord3f(GL_TEXTURE0, iter->position.x,iter->position.y,iter->position.z); |
---|
[2096] | 1256 | |
---|
[2805] | 1257 | // TBD.. |
---|
| 1258 | //glMultiTexCoord2f(GL_TEXTURE1_ARB, (float)(i->Index % Width), (float)(i->Index / Height)); |
---|
| 1259 | //glMultiTexCoord1f(GL_TEXTURE2_ARB, iter->initTimeStep); |
---|
[2096] | 1260 | |
---|
[2805] | 1261 | glVertex2f((float)(iter->index % _width), |
---|
| 1262 | (float)(iter->index / _height) + 1/* + offsetY*/ /* + offsetY shouldn't be */); |
---|
[3452] | 1263 | //TRACE("%f %f", (float) (iter->index % _width), (float)(iter->index / _width)); |
---|
[2805] | 1264 | } |
---|
| 1265 | glEnd(); |
---|
| 1266 | |
---|
[2884] | 1267 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2805] | 1268 | cgGLDisableTextureParameter(_ipVectorFieldParam); |
---|
[2882] | 1269 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2805] | 1270 | |
---|
| 1271 | glMatrixMode(GL_PROJECTION); |
---|
| 1272 | glPopMatrix(); |
---|
| 1273 | glMatrixMode(GL_MODELVIEW); |
---|
| 1274 | glPopMatrix(); |
---|
| 1275 | glPopAttrib(); |
---|
| 1276 | |
---|
| 1277 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2096] | 1278 | #endif |
---|
| 1279 | |
---|
[2805] | 1280 | // Free array. |
---|
| 1281 | _newParticles.clear(); |
---|
[2096] | 1282 | } |
---|
| 1283 | |
---|
| 1284 | void ParticleSystem::cleanUpParticles() |
---|
| 1285 | { |
---|
[2805] | 1286 | if (! _activeParticles.empty()) { |
---|
| 1287 | while (_activeParticles.top().timeOfDeath < _currentTime) { |
---|
| 1288 | unsigned int i = _activeParticles.top().index; |
---|
| 1289 | _activeParticles.pop(); |
---|
| 1290 | _availableIndices.push(i); |
---|
| 1291 | //_usedIndices[i] = false; |
---|
[2096] | 1292 | |
---|
[2805] | 1293 | //if (i >= _maxUsedIndex) |
---|
[2807] | 1294 | // while (!_usedIndices[_maxUsedIndex]) |
---|
| 1295 | // _maxUsedIndex--; |
---|
[2805] | 1296 | } |
---|
| 1297 | } |
---|
[2096] | 1298 | } |
---|
| 1299 | |
---|
| 1300 | void ParticleSystem::sort() |
---|
| 1301 | { |
---|
[2805] | 1302 | /////////////////////////////////////////////////////////// |
---|
| 1303 | // BEGIN - COMPUTE DISTANCE |
---|
[3492] | 1304 | vrmath::Vector3f pos; |
---|
| 1305 | vrmath::Matrix4x4d mat; |
---|
[2805] | 1306 | glPushMatrix(); |
---|
| 1307 | glLoadIdentity(); |
---|
| 1308 | glScalef(_scalex, _scaley, _scalez); |
---|
| 1309 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
[3492] | 1310 | glGetDoublev(GL_MODELVIEW_MATRIX, mat.get()); |
---|
[2805] | 1311 | glPopMatrix(); |
---|
| 1312 | mat.invert(); |
---|
| 1313 | mat.getTranslation(pos); |
---|
[2096] | 1314 | |
---|
[2805] | 1315 | cgGLBindProgram(_distanceSortFP); |
---|
[2882] | 1316 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1317 | |
---|
[2805] | 1318 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1319 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
| 1320 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[_currentSortIndex]); |
---|
[2096] | 1321 | |
---|
[2805] | 1322 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 1323 | glEnable(GL_TEXTURE_RECTANGLE_ARB); |
---|
| 1324 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
[2096] | 1325 | |
---|
[2805] | 1326 | cgGLSetParameter3f(_viewPosParam, pos.x, pos.y, pos.z); |
---|
[2096] | 1327 | |
---|
[2805] | 1328 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
| 1329 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1330 | glViewport(0, 0, _width, _height); |
---|
| 1331 | glMatrixMode(GL_PROJECTION); |
---|
| 1332 | glPushMatrix(); |
---|
| 1333 | glLoadIdentity(); |
---|
| 1334 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1335 | glMatrixMode(GL_MODELVIEW); |
---|
| 1336 | glPushMatrix(); |
---|
| 1337 | glLoadIdentity(); |
---|
[2096] | 1338 | |
---|
[2805] | 1339 | drawQuad(); |
---|
[2096] | 1340 | |
---|
[2882] | 1341 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1342 | |
---|
[2805] | 1343 | glMatrixMode(GL_PROJECTION); |
---|
| 1344 | glPopMatrix(); |
---|
| 1345 | glMatrixMode(GL_MODELVIEW); |
---|
| 1346 | glPopMatrix(); |
---|
| 1347 | glPopAttrib(); |
---|
| 1348 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2096] | 1349 | |
---|
[2805] | 1350 | // _DEBUG |
---|
| 1351 | /* |
---|
| 1352 | { |
---|
| 1353 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
| 1354 | static float debug[256]; |
---|
| 1355 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
| 1356 | TRACE("[%d]", _currentSortIndex); |
---|
| 1357 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
[3452] | 1358 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
[2805] | 1359 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 1360 | } |
---|
| 1361 | */ |
---|
[2096] | 1362 | |
---|
[2805] | 1363 | // _DEBUG |
---|
| 1364 | /* |
---|
| 1365 | { |
---|
| 1366 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_currentPosIndex]); |
---|
| 1367 | static float debug[256]; |
---|
| 1368 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
| 1369 | TRACE("currentPos[%d]", _currentPosIndex); |
---|
| 1370 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
[3452] | 1371 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
[3453] | 1372 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2805] | 1373 | } |
---|
| 1374 | */ |
---|
[2096] | 1375 | |
---|
[2805] | 1376 | // compute distance |
---|
| 1377 | swap(_currentSortIndex, _destSortIndex); |
---|
[2096] | 1378 | |
---|
[2805] | 1379 | // END - COMPUTE DISTANCE |
---|
| 1380 | /////////////////////////////////////////////////////////// |
---|
[2096] | 1381 | |
---|
[2805] | 1382 | /////////////////////////////////////////////////////////// |
---|
| 1383 | // BEGIN - MERGE SORT |
---|
| 1384 | _currentSortPass = 0; |
---|
[2096] | 1385 | |
---|
[2805] | 1386 | int logdSize = logd(_particleMaxCount); |
---|
| 1387 | _maxSortPasses = (logdSize + 1) * logdSize / 2; |
---|
[2096] | 1388 | |
---|
[2805] | 1389 | _sortBegin = _sortEnd; |
---|
| 1390 | _sortEnd = (_sortBegin + _sortPassesPerFrame) % _maxSortPasses; |
---|
[2096] | 1391 | |
---|
[2805] | 1392 | cgGLSetParameter2f(_srSizeParam, (float)_width, (float)_height); |
---|
| 1393 | cgGLSetParameter2f(_seSizeParam, (float)_width, (float)_height); |
---|
[2096] | 1394 | |
---|
[2805] | 1395 | mergeSort(this->_particleMaxCount); |
---|
[2096] | 1396 | |
---|
[2805] | 1397 | // _DEBUG |
---|
| 1398 | /* |
---|
| 1399 | { |
---|
| 1400 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_currentSortIndex]); |
---|
| 1401 | static float debug[256]; |
---|
| 1402 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
| 1403 | TRACE("[%d]", _currentSortIndex); |
---|
| 1404 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
[3452] | 1405 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
[2805] | 1406 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 1407 | } |
---|
| 1408 | */ |
---|
[2096] | 1409 | |
---|
[2805] | 1410 | // END - MERGE SORT |
---|
| 1411 | /////////////////////////////////////////////////////////// |
---|
[2096] | 1412 | |
---|
[2805] | 1413 | /////////////////////////////////////////////////////////// |
---|
| 1414 | // POSITION LOOKUP |
---|
| 1415 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
| 1416 | cgGLBindProgram(_distanceSortLookupFP); |
---|
[2882] | 1417 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1418 | |
---|
[2805] | 1419 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1420 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, sort_tex[_currentSortIndex]); |
---|
[2096] | 1421 | |
---|
[2805] | 1422 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 1423 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB, psys_tex[_currentPosIndex]); |
---|
[2096] | 1424 | |
---|
[2805] | 1425 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1426 | glViewport(0, 0, _width, _height); |
---|
| 1427 | glMatrixMode(GL_PROJECTION); |
---|
| 1428 | glPushMatrix(); |
---|
| 1429 | glLoadIdentity(); |
---|
| 1430 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1431 | glMatrixMode(GL_MODELVIEW); |
---|
| 1432 | glPushMatrix(); |
---|
| 1433 | glLoadIdentity(); |
---|
[2096] | 1434 | |
---|
[2805] | 1435 | drawQuad(); |
---|
[2096] | 1436 | |
---|
[2805] | 1437 | glMatrixMode(GL_PROJECTION); |
---|
| 1438 | glPopMatrix(); |
---|
| 1439 | glMatrixMode(GL_MODELVIEW); |
---|
| 1440 | glPopMatrix(); |
---|
| 1441 | glPopAttrib(); |
---|
[2096] | 1442 | |
---|
[2805] | 1443 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2882] | 1444 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2805] | 1445 | |
---|
| 1446 | // POSITION LOOKUP |
---|
| 1447 | /////////////////////////////////////////////////////////// |
---|
| 1448 | glActiveTextureARB(GL_TEXTURE1_ARB); |
---|
[2884] | 1449 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2805] | 1450 | |
---|
| 1451 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1452 | glDisable(GL_TEXTURE_RECTANGLE_ARB); |
---|
[2805] | 1453 | |
---|
| 1454 | // _DEBUG |
---|
| 1455 | /* |
---|
| 1456 | { |
---|
| 1457 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, psys_fbo[_destPosIndex]); |
---|
| 1458 | static float debug[256]; |
---|
| 1459 | glReadPixels(0, 0, _width, _height, GL_RGB, GL_FLOAT, (float*)debug); |
---|
| 1460 | TRACE("[%d]", _currentSortIndex); |
---|
| 1461 | for (int i = 0; i < _width * _height * 3; i += 3) |
---|
[3452] | 1462 | TRACE("%.2f, %.2f, %.2f", debug[i], debug[i+1], debug[i+2]); |
---|
[2805] | 1463 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 1464 | } |
---|
| 1465 | */ |
---|
[2096] | 1466 | } |
---|
| 1467 | |
---|
| 1468 | void ParticleSystem::mergeSort(int count) |
---|
| 1469 | { |
---|
[2805] | 1470 | if (count > 1) { |
---|
[2807] | 1471 | mergeSort(count >> 1); |
---|
[2805] | 1472 | merge(count, 1); |
---|
| 1473 | } |
---|
[2096] | 1474 | } |
---|
| 1475 | |
---|
| 1476 | void ParticleSystem::merge(int count, int step) |
---|
| 1477 | { |
---|
[2805] | 1478 | if (count > 2) { |
---|
| 1479 | merge(count >> 1, step << 1); |
---|
[2096] | 1480 | |
---|
[2805] | 1481 | ++_currentSortPass; |
---|
[2096] | 1482 | |
---|
[2805] | 1483 | if (_sortBegin < _sortEnd) { |
---|
| 1484 | if (_currentSortPass < _sortBegin || _currentSortPass >= _sortEnd) |
---|
| 1485 | return; |
---|
| 1486 | } else { |
---|
| 1487 | if (_currentSortPass < _sortBegin && _currentSortPass >= _sortEnd) |
---|
| 1488 | return; |
---|
| 1489 | } |
---|
[2096] | 1490 | |
---|
[2805] | 1491 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
| 1492 | cgGLBindProgram(_sortRecursionFP); |
---|
[2882] | 1493 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1494 | |
---|
[2805] | 1495 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1496 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , sort_tex[_currentSortIndex]); |
---|
[2096] | 1497 | |
---|
[2805] | 1498 | cgGLSetParameter1f(_srStepParam, (float)step); |
---|
| 1499 | cgGLSetParameter1f(_srCountParam, (float)count); |
---|
[2096] | 1500 | |
---|
[2805] | 1501 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1502 | glViewport(0, 0, _width, _height); |
---|
| 1503 | glMatrixMode(GL_PROJECTION); |
---|
| 1504 | glPushMatrix(); |
---|
| 1505 | glLoadIdentity(); |
---|
| 1506 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1507 | glMatrixMode(GL_MODELVIEW); |
---|
| 1508 | glPushMatrix(); |
---|
| 1509 | glLoadIdentity(); |
---|
[2096] | 1510 | |
---|
[2805] | 1511 | drawQuad(); |
---|
[2096] | 1512 | |
---|
[2805] | 1513 | glMatrixMode(GL_PROJECTION); |
---|
| 1514 | glPopMatrix(); |
---|
| 1515 | glMatrixMode(GL_MODELVIEW); |
---|
| 1516 | glPopMatrix(); |
---|
| 1517 | glPopAttrib(); |
---|
[2096] | 1518 | |
---|
[2882] | 1519 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1520 | |
---|
[2805] | 1521 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
[2884] | 1522 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , 0); |
---|
[2805] | 1523 | } else { |
---|
| 1524 | _currentSortPass++; |
---|
[2096] | 1525 | |
---|
[2805] | 1526 | if (_sortBegin < _sortEnd) { |
---|
| 1527 | if (_currentSortPass < _sortBegin || _currentSortPass >= _sortEnd) |
---|
| 1528 | return; |
---|
| 1529 | } else { |
---|
| 1530 | if (_currentSortPass < _sortBegin && _currentSortPass >= _sortEnd) |
---|
| 1531 | return; |
---|
| 1532 | } |
---|
[2096] | 1533 | |
---|
[2805] | 1534 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sort_fbo[_destSortIndex]); |
---|
| 1535 | cgGLBindProgram(_sortEndFP); |
---|
[2882] | 1536 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1537 | |
---|
[2805] | 1538 | glActiveTextureARB(GL_TEXTURE0_ARB); |
---|
[2884] | 1539 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , sort_tex[_currentSortIndex]); |
---|
[2096] | 1540 | |
---|
[2805] | 1541 | cgGLSetParameter1f(_seStepParam, (float)step); |
---|
[2096] | 1542 | |
---|
[2805] | 1543 | glPushAttrib(GL_VIEWPORT_BIT); |
---|
| 1544 | glViewport(0, 0, _width, _height); |
---|
| 1545 | glMatrixMode(GL_PROJECTION); |
---|
| 1546 | glPushMatrix(); |
---|
| 1547 | glLoadIdentity(); |
---|
| 1548 | glOrtho(0, _width, 0, _height, -10.0f, 10.0f); |
---|
| 1549 | glMatrixMode(GL_MODELVIEW); |
---|
| 1550 | glPushMatrix(); |
---|
| 1551 | glLoadIdentity(); |
---|
[2096] | 1552 | |
---|
[2805] | 1553 | drawQuad(); |
---|
[2096] | 1554 | |
---|
[2805] | 1555 | glMatrixMode(GL_PROJECTION); |
---|
| 1556 | glPopMatrix(); |
---|
| 1557 | glMatrixMode(GL_MODELVIEW); |
---|
| 1558 | glPopMatrix(); |
---|
| 1559 | glPopAttrib(); |
---|
[2096] | 1560 | |
---|
[2882] | 1561 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1562 | |
---|
[2884] | 1563 | glBindTexture(GL_TEXTURE_RECTANGLE_ARB , 0); |
---|
[2805] | 1564 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
---|
| 1565 | } |
---|
[2096] | 1566 | |
---|
[2805] | 1567 | swap(_currentSortIndex, _destSortIndex); |
---|
[2096] | 1568 | } |
---|
| 1569 | |
---|
| 1570 | void ParticleSystem::renderStreamlines() |
---|
| 1571 | { |
---|
[2805] | 1572 | if (_currentStreamlineIndex > 2) { |
---|
| 1573 | glPushMatrix(); |
---|
| 1574 | glScalef(_scalex, _scaley, _scalez); |
---|
| 1575 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
[2096] | 1576 | |
---|
[2805] | 1577 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
[2096] | 1578 | |
---|
[2805] | 1579 | glColor3f(1.0f, 0.0f, 0.0f); |
---|
| 1580 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
| 1581 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
| 1582 | |
---|
| 1583 | _streamVertices->SetPointer(0); |
---|
| 1584 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
| 1585 | |
---|
[2807] | 1586 | ::glDrawElements(GL_LINES, _particleCount * 2 * (_currentStreamlineIndex - 1), |
---|
| 1587 | GL_UNSIGNED_INT, _indexBuffer); |
---|
[2805] | 1588 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
| 1589 | glPopMatrix(); |
---|
| 1590 | } |
---|
[2096] | 1591 | } |
---|
| 1592 | |
---|
| 1593 | void ParticleSystem::render() |
---|
| 1594 | { |
---|
[2805] | 1595 | glPushMatrix(); |
---|
[2096] | 1596 | |
---|
[2805] | 1597 | if (_streamlineEnabled) { |
---|
| 1598 | renderStreamlines(); |
---|
| 1599 | } else { |
---|
| 1600 | glScalef(_scalex, _scaley, _scalez); |
---|
| 1601 | glTranslatef(-0.5f, -0.5f, -0.5f); |
---|
[2818] | 1602 | if (_glyphEnabled) { |
---|
[2805] | 1603 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
| 1604 | glColor3f(1, 1, 1); |
---|
[2972] | 1605 | |
---|
[2805] | 1606 | glDepthMask(GL_FALSE); |
---|
| 1607 | glEnable(GL_BLEND); |
---|
| 1608 | |
---|
[2096] | 1609 | #ifndef USE_RGBA_ARROW |
---|
[2805] | 1610 | glBlendFunc(GL_SRC_ALPHA, GL_ONE); |
---|
[2096] | 1611 | #else |
---|
[2805] | 1612 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
[2096] | 1613 | #endif |
---|
[2972] | 1614 | glEnable(GL_ALPHA_TEST); |
---|
| 1615 | glAlphaFunc(GL_GREATER, 0.6); |
---|
| 1616 | |
---|
[2884] | 1617 | glEnable(GL_POINT_SPRITE_ARB); |
---|
[2805] | 1618 | glPointSize(_pointSize); |
---|
[2096] | 1619 | |
---|
[2884] | 1620 | glEnable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
[2805] | 1621 | |
---|
[2096] | 1622 | #ifndef TEST |
---|
[2972] | 1623 | _arrows->activate(); |
---|
[2805] | 1624 | glEnable(GL_TEXTURE_2D); |
---|
[2972] | 1625 | glPointParameterfARB(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f); |
---|
[2096] | 1626 | |
---|
[2972] | 1627 | glPointParameterfARB(GL_POINT_SIZE_MIN_ARB, 1.0f); |
---|
| 1628 | glPointParameterfARB(GL_POINT_SIZE_MAX_ARB, 100.0f); |
---|
| 1629 | glTexEnvf(GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE); |
---|
[2096] | 1630 | |
---|
[2805] | 1631 | cgGLBindProgram(_particleVP); |
---|
| 1632 | cgGLBindProgram(_particleFP); |
---|
| 1633 | cgGLEnableProfile(CG_PROFILE_VP40); |
---|
| 1634 | cgGLEnableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1635 | |
---|
[2805] | 1636 | cgSetParameter1f(_mvCurrentTimeParam, _currentTime); |
---|
[3452] | 1637 | //TRACE("%f %f, %f %d", _fov, tan(_fov), tan(_fov / 2.0), _screenHeight); |
---|
[2857] | 1638 | //cgSetParameter1f(_mvTanHalfFOVParam, -tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5); |
---|
| 1639 | //float v = tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5; |
---|
| 1640 | cgSetParameter1f(_mvTanHalfFOVParam, tan(_fov * M_PI / 180 * 0.5) * _screenHeight * 0.5); |
---|
| 1641 | //cgSetParameter1f(_mvTanHalfFOVParam, _screenHeight * 0.5 / tan(_fov * M_PI / 180 * 0.5)); |
---|
[2096] | 1642 | |
---|
[2805] | 1643 | cgGLSetStateMatrixParameter(_mvpParticleParam, |
---|
| 1644 | CG_GL_MODELVIEW_PROJECTION_MATRIX, |
---|
| 1645 | CG_GL_MATRIX_IDENTITY); |
---|
| 1646 | cgGLSetStateMatrixParameter(_mvParticleParam, |
---|
| 1647 | CG_GL_MODELVIEW_MATRIX, |
---|
| 1648 | CG_GL_MATRIX_IDENTITY); |
---|
[2096] | 1649 | |
---|
[2805] | 1650 | // TBD.. |
---|
| 1651 | glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); |
---|
| 1652 | glEnableVertexAttribArrayARB(8); |
---|
| 1653 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
| 1654 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
| 1655 | _vertices->SetPointer(0); |
---|
| 1656 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
| 1657 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
| 1658 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
[2096] | 1659 | |
---|
[2805] | 1660 | // TBD... |
---|
| 1661 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
| 1662 | glPointSize(1); |
---|
[2096] | 1663 | |
---|
[2805] | 1664 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
| 1665 | //glDisableClientState(GL_COLOR_ARRAY); |
---|
[2096] | 1666 | |
---|
[2805] | 1667 | // TBD... |
---|
| 1668 | ::glDisableVertexAttribArray(8); |
---|
| 1669 | glPopClientAttrib(); |
---|
[2096] | 1670 | |
---|
[2805] | 1671 | cgGLDisableProfile(CG_PROFILE_VP40); |
---|
| 1672 | cgGLDisableProfile(CG_PROFILE_FP40); |
---|
[2096] | 1673 | |
---|
[2805] | 1674 | glDepthMask(GL_TRUE); |
---|
| 1675 | |
---|
[2884] | 1676 | glDisable(GL_POINT_SPRITE_ARB); |
---|
| 1677 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
[2805] | 1678 | |
---|
| 1679 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
| 1680 | glDisable(GL_BLEND); |
---|
[2096] | 1681 | #else |
---|
[2805] | 1682 | glBindTexture(GL_TEXTURE_2D, ::SpotTexID); |
---|
| 1683 | glEnable(GL_TEXTURE_2D); |
---|
| 1684 | //glPointParameterfARB( GL_POINT_FADE_THRESHOLD_SIZE_ARB, 60.0f ); |
---|
| 1685 | glPointParameterfARB( GL_POINT_FADE_THRESHOLD_SIZE_ARB, 0.0f ); |
---|
[2096] | 1686 | |
---|
[2805] | 1687 | glPointParameterfARB( GL_POINT_SIZE_MIN_ARB, 1.0f); |
---|
| 1688 | glPointParameterfARB( GL_POINT_SIZE_MAX_ARB, 100.0f); |
---|
| 1689 | glTexEnvf( GL_POINT_SPRITE_ARB, GL_COORD_REPLACE_ARB, GL_TRUE ); |
---|
[2096] | 1690 | |
---|
[2805] | 1691 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
| 1692 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
| 1693 | _vertices->SetPointer(0); |
---|
| 1694 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
| 1695 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
| 1696 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
[2096] | 1697 | |
---|
[2805] | 1698 | // TBD... |
---|
| 1699 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
| 1700 | glPointSize(1); |
---|
| 1701 | glDrawArrays(GL_POINTS, 0, this->_particleMaxCount); |
---|
[2096] | 1702 | |
---|
[2805] | 1703 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
[2096] | 1704 | |
---|
[2805] | 1705 | glDepthMask(GL_TRUE); |
---|
| 1706 | |
---|
[2884] | 1707 | glDisable(GL_POINT_SPRITE_ARB); |
---|
| 1708 | glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
---|
[2805] | 1709 | |
---|
| 1710 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
| 1711 | glDisable(GL_BLEND); |
---|
[2096] | 1712 | #endif |
---|
[2805] | 1713 | } else { |
---|
[2807] | 1714 | if (_drawBBoxEnabled) drawUnitBox(); |
---|
[2096] | 1715 | |
---|
[2807] | 1716 | glColor3f(1, 1, 1); |
---|
| 1717 | glEnableClientState(GL_VERTEX_ARRAY); |
---|
| 1718 | //glEnableClientState(GL_COLOR_ARRAY); |
---|
| 1719 | glPointSize(10); |
---|
| 1720 | _vertices->SetPointer(0); |
---|
| 1721 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
| 1722 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
| 1723 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
| 1724 | glDrawArrays(GL_POINTS, 0, _particleMaxCount); |
---|
[2096] | 1725 | |
---|
[2807] | 1726 | glPointSize(1); |
---|
| 1727 | _vertices->SetPointer(0); |
---|
| 1728 | //glBindBufferARB(GL_ARRAY_BUFFER, _colorBufferID); |
---|
| 1729 | //glColorPointer(4, GL_FLOAT, 0, 0); |
---|
| 1730 | //glBindBufferARB(GL_ARRAY_BUFFER, 0); |
---|
| 1731 | glDrawArrays(GL_POINTS, 0, _particleMaxCount); |
---|
[2096] | 1732 | |
---|
[2807] | 1733 | glDisableClientState(GL_VERTEX_ARRAY); |
---|
[2805] | 1734 | } |
---|
[2096] | 1735 | |
---|
[2805] | 1736 | #ifdef notdef |
---|
| 1737 | if (_criticalPoints && _criticalPoints->size()) { |
---|
[3492] | 1738 | std::vector<vrmath::Vector3f>::iterator iter; |
---|
[2805] | 1739 | glColor4f(1, 1, 1, 1); |
---|
| 1740 | glPointSize(10); |
---|
| 1741 | glBegin(GL_POINTS); |
---|
| 1742 | for (iter = _criticalPoints->begin(); iter != _criticalPoints->end(); ++iter) { |
---|
[2807] | 1743 | glVertex3f((*iter).x, (*iter).y, (*iter).z); |
---|
[2805] | 1744 | } |
---|
| 1745 | glEnd(); |
---|
| 1746 | glPointSize(1); |
---|
| 1747 | } |
---|
| 1748 | #endif |
---|
| 1749 | } |
---|
| 1750 | |
---|
| 1751 | glPopMatrix(); |
---|
[2096] | 1752 | } |
---|
| 1753 | |
---|
| 1754 | void ParticleSystem::drawQuad(int x1, int y1, int x2, int y2) |
---|
| 1755 | { |
---|
[2805] | 1756 | glBegin(GL_QUADS); |
---|
[2096] | 1757 | |
---|
[2805] | 1758 | glTexCoord2f(x1, y1); |
---|
| 1759 | glVertex2f(x1, y1); |
---|
[2096] | 1760 | |
---|
[2805] | 1761 | glTexCoord2f(x2, y1); |
---|
| 1762 | glVertex2f(x2, y1); |
---|
[2096] | 1763 | |
---|
[2805] | 1764 | glTexCoord2f(x2, y2); |
---|
| 1765 | glVertex2f(x2, y2); |
---|
[2096] | 1766 | |
---|
[2805] | 1767 | glTexCoord2f(x1, y2); |
---|
| 1768 | glVertex2f(x1, y2); |
---|
[2096] | 1769 | |
---|
[2805] | 1770 | glEnd(); |
---|
[2096] | 1771 | } |
---|
| 1772 | |
---|
| 1773 | void ParticleSystem::drawQuad() |
---|
| 1774 | { |
---|
[2805] | 1775 | glBegin(GL_QUADS); |
---|
[2096] | 1776 | |
---|
[2805] | 1777 | glTexCoord2f(0, 0); |
---|
| 1778 | glVertex2f(0, 0); |
---|
[2096] | 1779 | |
---|
[2805] | 1780 | glTexCoord2f((float)_width, 0); |
---|
| 1781 | glVertex2f((float)_width, 0); |
---|
[2096] | 1782 | |
---|
[2805] | 1783 | glTexCoord2f((float)_width, (float)_height); |
---|
| 1784 | glVertex2f((float)_width, (float)_height); |
---|
[2096] | 1785 | |
---|
[2805] | 1786 | glTexCoord2f(0, (float)_height); |
---|
| 1787 | glVertex2f(0, (float)_height); |
---|
[2096] | 1788 | |
---|
[2805] | 1789 | glEnd(); |
---|
[2096] | 1790 | } |
---|
| 1791 | |
---|
| 1792 | void ParticleSystem::addEmitter(ParticleEmitter* emitter) |
---|
| 1793 | { |
---|
[2805] | 1794 | _emitters.push_back(emitter); |
---|
[2096] | 1795 | } |
---|
| 1796 | |
---|
| 1797 | void ParticleSystem::removeEmitter(int index) |
---|
| 1798 | { |
---|
[2805] | 1799 | // TBD... |
---|
[2096] | 1800 | } |
---|
| 1801 | |
---|
| 1802 | void ParticleSystem::removeAllEmitters() |
---|
| 1803 | { |
---|
[2805] | 1804 | std::vector<ParticleEmitter*>::iterator iter; |
---|
| 1805 | for (iter = _emitters.begin(); iter != _emitters.end(); ++iter) { |
---|
| 1806 | delete *iter; |
---|
| 1807 | } |
---|
| 1808 | _emitters.clear(); |
---|
[2096] | 1809 | } |
---|
| 1810 | |
---|
| 1811 | void ParticleSystem::drawUnitBox() |
---|
| 1812 | { |
---|
[2805] | 1813 | float x0 = 0.0f, y0 = 0.0f, z0 = 0.0f; |
---|
| 1814 | float x1 = 1.0f, y1 = 1.0f, z1 = 1.0f; |
---|
| 1815 | float r = 1.0f, g = 1.0f, b = 0.0f; |
---|
| 1816 | float line_width = 2.0f; |
---|
| 1817 | glEnable(GL_DEPTH_TEST); |
---|
| 1818 | glDisable(GL_TEXTURE_2D); |
---|
| 1819 | glEnable(GL_BLEND); |
---|
[2096] | 1820 | |
---|
[2805] | 1821 | glColor4d(r, g, b, 1.0); |
---|
| 1822 | glLineWidth(line_width); |
---|
[2096] | 1823 | |
---|
[2805] | 1824 | glBegin(GL_LINE_LOOP); |
---|
| 1825 | { |
---|
| 1826 | glVertex3d(x0, y0, z0); |
---|
| 1827 | glVertex3d(x1, y0, z0); |
---|
| 1828 | glVertex3d(x1, y1, z0); |
---|
| 1829 | glVertex3d(x0, y1, z0); |
---|
| 1830 | } |
---|
| 1831 | glEnd(); |
---|
[2096] | 1832 | |
---|
[2805] | 1833 | glBegin(GL_LINE_LOOP); |
---|
| 1834 | { |
---|
| 1835 | glVertex3d(x0, y0, z1); |
---|
| 1836 | glVertex3d(x1, y0, z1); |
---|
| 1837 | glVertex3d(x1, y1, z1); |
---|
| 1838 | glVertex3d(x0, y1, z1); |
---|
| 1839 | } |
---|
| 1840 | glEnd(); |
---|
[2096] | 1841 | |
---|
[2805] | 1842 | glBegin(GL_LINE_LOOP); |
---|
| 1843 | { |
---|
| 1844 | glVertex3d(x0, y0, z0); |
---|
| 1845 | glVertex3d(x0, y0, z1); |
---|
| 1846 | glVertex3d(x0, y1, z1); |
---|
| 1847 | glVertex3d(x0, y1, z0); |
---|
| 1848 | } |
---|
| 1849 | glEnd(); |
---|
[2096] | 1850 | |
---|
[2805] | 1851 | glBegin(GL_LINE_LOOP); |
---|
| 1852 | { |
---|
| 1853 | glVertex3d(x1, y0, z0); |
---|
| 1854 | glVertex3d(x1, y0, z1); |
---|
| 1855 | glVertex3d(x1, y1, z1); |
---|
| 1856 | glVertex3d(x1, y1, z0); |
---|
| 1857 | } |
---|
| 1858 | glEnd(); |
---|
| 1859 | glLineWidth(1.0f); |
---|
[2096] | 1860 | } |
---|
| 1861 | |
---|
[1704] | 1862 | void ParticleSystem::setUserDefinedNumOfParticles(int numParticles) |
---|
| 1863 | { |
---|
[2805] | 1864 | if (numParticles < _particleMaxCount) |
---|
| 1865 | _userDefinedParticleMaxCount = numParticles; |
---|
| 1866 | else |
---|
| 1867 | _userDefinedParticleMaxCount = _particleMaxCount; |
---|
| 1868 | reset(); |
---|
[1704] | 1869 | } |
---|