[1010] | 1 | #include <time.h>
|
---|
| 2 | #include <iomanip>
|
---|
| 3 | #include <stack>
|
---|
| 4 |
|
---|
| 5 |
|
---|
[235] | 6 | #include "ViewCell.h"
|
---|
| 7 | #include "Mesh.h"
|
---|
[308] | 8 | #include "Intersectable.h"
|
---|
[1121] | 9 | #include "KdTree.h"
|
---|
[235] | 10 | #include "Triangle3.h"
|
---|
[580] | 11 | #include "common.h"
|
---|
| 12 | #include "Environment.h"
|
---|
| 13 | #include "ViewCellsManager.h"
|
---|
| 14 | #include "Exporter.h"
|
---|
[1614] | 15 | #include "BvHierarchy.h"
|
---|
[580] | 16 |
|
---|
[235] | 17 |
|
---|
[1614] | 18 |
|
---|
[863] | 19 | namespace GtpVisibilityPreprocessor {
|
---|
[580] | 20 |
|
---|
| 21 |
|
---|
[955] | 22 |
|
---|
[580] | 23 | template <typename T> class myless
|
---|
| 24 | {
|
---|
| 25 | public:
|
---|
| 26 | bool operator() (T v1, T v2) const
|
---|
| 27 | {
|
---|
[600] | 28 | return (v1->GetMergeCost() < v2->GetMergeCost());
|
---|
[580] | 29 | }
|
---|
| 30 | };
|
---|
| 31 |
|
---|
| 32 |
|
---|
[1121] | 33 | typedef priority_queue<ViewCell *, vector<ViewCell *>,
|
---|
| 34 | myless<vector<ViewCell *>::value_type> > TraversalQueue;
|
---|
[580] | 35 |
|
---|
[1297] | 36 | int ViewCell::sMailId = 1;//2147483647;
|
---|
[580] | 37 | int ViewCell::sReservedMailboxes = 1;
|
---|
| 38 |
|
---|
[882] | 39 |
|
---|
[580] | 40 | float MergeCandidate::sRenderCostWeight = 0;
|
---|
| 41 |
|
---|
| 42 |
|
---|
| 43 | // pvs penalty can be different from pvs size
|
---|
[882] | 44 | inline static float EvalPvsPenalty(const int pvs,
|
---|
| 45 | const int lower,
|
---|
| 46 | const int upper)
|
---|
[580] | 47 | {
|
---|
| 48 | // clamp to minmax values
|
---|
[728] | 49 | if (pvs < lower)
|
---|
[580] | 50 | return (float)lower;
|
---|
| 51 | if (pvs > upper)
|
---|
| 52 | return (float)upper;
|
---|
[752] | 53 |
|
---|
[580] | 54 | return (float)pvs;
|
---|
| 55 | }
|
---|
| 56 |
|
---|
[1586] | 57 | /** Counts contribution of the view cell to the pvs.
|
---|
| 58 | */
|
---|
| 59 | inline int CountPvsContribution(ViewCell *vc)
|
---|
[585] | 60 | {
|
---|
| 61 | int count = 0;
|
---|
| 62 |
|
---|
| 63 | ObjectPvsMap::const_iterator it, it_end = vc->GetPvs().mEntries.end();
|
---|
| 64 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
| 65 | {
|
---|
| 66 | if (!(*it).first->Mailed())
|
---|
| 67 | {
|
---|
| 68 | (*it).first->Mail();
|
---|
| 69 | ++ count;
|
---|
| 70 | }
|
---|
| 71 | }
|
---|
| 72 |
|
---|
| 73 | return count;
|
---|
| 74 | }
|
---|
| 75 |
|
---|
[1233] | 76 |
|
---|
[729] | 77 | /// Fast computation of merged pvs size
|
---|
[752] | 78 | static int ComputeMergedPvsSize(const ObjectPvs &pvs1, const ObjectPvs &pvs2)
|
---|
[580] | 79 | {
|
---|
[729] | 80 | // add first pvs
|
---|
[580] | 81 | int pvs = pvs1.GetSize();
|
---|
| 82 |
|
---|
| 83 | ObjectPvsMap::const_iterator it, it_end = pvs1.mEntries.end();
|
---|
| 84 |
|
---|
| 85 | Intersectable::NewMail();
|
---|
| 86 |
|
---|
[729] | 87 | // mail all objects in first pvs
|
---|
[580] | 88 | for (it = pvs1.mEntries.begin(); it != it_end; ++ it)
|
---|
| 89 | {
|
---|
| 90 | (*it).first->Mail();
|
---|
| 91 | }
|
---|
| 92 |
|
---|
| 93 | it_end = pvs2.mEntries.end();
|
---|
| 94 |
|
---|
[1189] | 95 | // look if the entries are also in second pvs
|
---|
[580] | 96 | for (it = pvs2.mEntries.begin(); it != it_end; ++ it)
|
---|
| 97 | {
|
---|
| 98 | Intersectable *obj = (*it).first;
|
---|
| 99 | if (!obj->Mailed())
|
---|
| 100 | ++ pvs;
|
---|
| 101 | }
|
---|
| 102 |
|
---|
| 103 | return pvs;
|
---|
| 104 | }
|
---|
| 105 |
|
---|
| 106 |
|
---|
[478] | 107 | ViewCell::ViewCell():
|
---|
| 108 | MeshInstance(NULL),
|
---|
[551] | 109 | mArea(-1),
|
---|
| 110 | mVolume(-1),
|
---|
[580] | 111 | mValid(true),
|
---|
| 112 | mParent(NULL),
|
---|
[600] | 113 | mMergeCost(0),
|
---|
[752] | 114 | mPvsSize(0),
|
---|
[1160] | 115 | mEntriesInPvs(0),
|
---|
[752] | 116 | mPvsSizeValid(false)
|
---|
[1297] | 117 | //mMailbox(0)
|
---|
[265] | 118 | {
|
---|
[1570] | 119 | mId = -100;
|
---|
[265] | 120 | }
|
---|
[235] | 121 |
|
---|
[478] | 122 | ViewCell::ViewCell(Mesh *mesh):
|
---|
| 123 | MeshInstance(mesh),
|
---|
[551] | 124 | mArea(-1),
|
---|
| 125 | mVolume(-1),
|
---|
[580] | 126 | mValid(true),
|
---|
| 127 | mParent(NULL),
|
---|
[600] | 128 | mMergeCost(0),
|
---|
[752] | 129 | mPvsSize(0),
|
---|
| 130 | mPvsSizeValid(false)
|
---|
[1297] | 131 | //mMailbox(0)
|
---|
[372] | 132 | {
|
---|
[1570] | 133 | mId = -100;
|
---|
[372] | 134 | }
|
---|
| 135 |
|
---|
[503] | 136 |
|
---|
[1551] | 137 | ViewCell::~ViewCell()
|
---|
| 138 | {
|
---|
| 139 | }
|
---|
| 140 |
|
---|
| 141 |
|
---|
[469] | 142 | const ObjectPvs &ViewCell::GetPvs() const
|
---|
[419] | 143 | {
|
---|
| 144 | return mPvs;
|
---|
| 145 | }
|
---|
| 146 |
|
---|
[752] | 147 |
|
---|
[469] | 148 | ObjectPvs &ViewCell::GetPvs()
|
---|
[372] | 149 | {
|
---|
| 150 | return mPvs;
|
---|
| 151 | }
|
---|
| 152 |
|
---|
[503] | 153 |
|
---|
[880] | 154 | void ViewCell::SetPvs(const ObjectPvs &pvs)
|
---|
| 155 | {
|
---|
| 156 | mPvs = pvs;
|
---|
| 157 | }
|
---|
| 158 |
|
---|
| 159 |
|
---|
[235] | 160 | int ViewCell::Type() const
|
---|
| 161 | {
|
---|
[308] | 162 | return VIEW_CELL;
|
---|
[235] | 163 | }
|
---|
| 164 |
|
---|
[503] | 165 |
|
---|
[469] | 166 | float ViewCell::GetVolume() const
|
---|
| 167 | {
|
---|
| 168 | return mVolume;
|
---|
| 169 | }
|
---|
| 170 |
|
---|
[478] | 171 |
|
---|
[469] | 172 | void ViewCell::SetVolume(float volume)
|
---|
| 173 | {
|
---|
| 174 | mVolume = volume;
|
---|
| 175 | }
|
---|
| 176 |
|
---|
[503] | 177 |
|
---|
| 178 | void ViewCell::SetMesh(Mesh *mesh)
|
---|
| 179 | {
|
---|
| 180 | mMesh = mesh;
|
---|
| 181 | }
|
---|
| 182 |
|
---|
| 183 |
|
---|
[478] | 184 | float ViewCell::GetArea() const
|
---|
| 185 | {
|
---|
| 186 | return mArea;
|
---|
| 187 | }
|
---|
| 188 |
|
---|
| 189 |
|
---|
| 190 | void ViewCell::SetArea(float area)
|
---|
| 191 | {
|
---|
| 192 | mArea = area;
|
---|
| 193 | }
|
---|
| 194 |
|
---|
| 195 |
|
---|
[752] | 196 | void ViewCell::SetColor(const RgbColor &color)
|
---|
| 197 | {
|
---|
| 198 | mColor = color;
|
---|
| 199 | }
|
---|
| 200 |
|
---|
| 201 |
|
---|
| 202 | RgbColor ViewCell::GetColor() const
|
---|
| 203 | {
|
---|
| 204 | return mColor;
|
---|
| 205 | }
|
---|
| 206 |
|
---|
| 207 |
|
---|
[547] | 208 | void ViewCell::SetValid(const bool valid)
|
---|
| 209 | {
|
---|
[564] | 210 | mValid = valid;
|
---|
[547] | 211 | }
|
---|
| 212 |
|
---|
| 213 |
|
---|
| 214 | bool ViewCell::GetValid() const
|
---|
| 215 | {
|
---|
| 216 | return mValid;
|
---|
| 217 | }
|
---|
| 218 |
|
---|
| 219 |
|
---|
[580] | 220 | void ViewCell::SetParent(ViewCellInterior *parent)
|
---|
| 221 | {
|
---|
| 222 | mParent = parent;
|
---|
| 223 | }
|
---|
| 224 |
|
---|
| 225 |
|
---|
| 226 | bool ViewCell::IsRoot() const
|
---|
| 227 | {
|
---|
| 228 | return !mParent;
|
---|
| 229 | }
|
---|
| 230 |
|
---|
| 231 |
|
---|
| 232 | ViewCellInterior *ViewCell::GetParent() const
|
---|
| 233 | {
|
---|
| 234 | return mParent;
|
---|
| 235 | }
|
---|
| 236 |
|
---|
| 237 |
|
---|
[600] | 238 | void ViewCell::SetMergeCost(const float mergeCost)
|
---|
[580] | 239 | {
|
---|
[600] | 240 | mMergeCost = mergeCost;
|
---|
[580] | 241 | }
|
---|
| 242 |
|
---|
| 243 |
|
---|
[728] | 244 | float ViewCell::GetRenderCost() const
|
---|
| 245 | {
|
---|
[801] | 246 | //return (float)mPvs.GetSize() * GetVolume();
|
---|
| 247 | return (float)mPvsSize * GetVolume();
|
---|
[728] | 248 | }
|
---|
| 249 |
|
---|
| 250 |
|
---|
[600] | 251 | float ViewCell::GetMergeCost() const
|
---|
[580] | 252 | {
|
---|
[600] | 253 | return mMergeCost;
|
---|
[580] | 254 | }
|
---|
| 255 |
|
---|
[1002] | 256 |
|
---|
| 257 | bool ViewCell::AddPvsSample(Intersectable *sample,
|
---|
| 258 | const float pdf,
|
---|
| 259 | float &contribution)
|
---|
| 260 | {
|
---|
| 261 | const bool result = mPvs.AddSample(sample, pdf, contribution);
|
---|
[1586] | 262 | // have to recompute pvs size
|
---|
| 263 | mPvsSizeValid = false;
|
---|
[1002] | 264 |
|
---|
| 265 | return result;
|
---|
| 266 | }
|
---|
| 267 |
|
---|
| 268 |
|
---|
[1133] | 269 |
|
---|
[462] | 270 | /************************************************************************/
|
---|
[580] | 271 | /* class ViewCellInterior implementation */
|
---|
| 272 | /************************************************************************/
|
---|
| 273 |
|
---|
| 274 |
|
---|
| 275 | ViewCellInterior::ViewCellInterior()
|
---|
| 276 | {
|
---|
| 277 | }
|
---|
| 278 |
|
---|
| 279 |
|
---|
| 280 | ViewCellInterior::~ViewCellInterior()
|
---|
| 281 | {
|
---|
| 282 | ViewCellContainer::const_iterator it, it_end = mChildren.end();
|
---|
| 283 |
|
---|
| 284 | for (it = mChildren.begin(); it != it_end; ++ it)
|
---|
[1545] | 285 | {
|
---|
[580] | 286 | delete (*it);
|
---|
[1545] | 287 | }
|
---|
[580] | 288 | }
|
---|
| 289 |
|
---|
| 290 |
|
---|
| 291 | ViewCellInterior::ViewCellInterior(Mesh *mesh):
|
---|
| 292 | ViewCell(mesh)
|
---|
| 293 | {
|
---|
| 294 | }
|
---|
| 295 |
|
---|
| 296 |
|
---|
| 297 | bool ViewCellInterior::IsLeaf() const
|
---|
| 298 | {
|
---|
| 299 | return false;
|
---|
| 300 | }
|
---|
| 301 |
|
---|
| 302 |
|
---|
[650] | 303 | void ViewCellInterior::SetupChildLink(ViewCell *vc)
|
---|
[580] | 304 | {
|
---|
[650] | 305 | mChildren.push_back(vc);
|
---|
[1002] | 306 | vc->SetParent(this);
|
---|
[580] | 307 | }
|
---|
| 308 |
|
---|
| 309 |
|
---|
[586] | 310 | void ViewCellInterior::RemoveChildLink(ViewCell *l)
|
---|
| 311 | {
|
---|
| 312 | // erase leaf from old view cell
|
---|
| 313 | ViewCellContainer::iterator it = mChildren.begin();
|
---|
[580] | 314 |
|
---|
[586] | 315 | for (; (*it) != l; ++ it);
|
---|
| 316 | if (it == mChildren.end())
|
---|
| 317 | Debug << "error" << endl;
|
---|
| 318 | else
|
---|
| 319 | mChildren.erase(it);
|
---|
| 320 | }
|
---|
| 321 |
|
---|
[703] | 322 |
|
---|
[1286] | 323 | void ViewCellInterior::ReplaceChildLink(ViewCell *prev, ViewCell *cur)
|
---|
| 324 | {
|
---|
| 325 | // erase leaf from old view cell
|
---|
| 326 | ViewCellContainer::iterator it = mChildren.begin();
|
---|
| 327 |
|
---|
| 328 | for (; (*it) != prev; ++ it);
|
---|
| 329 | if (it == mChildren.end())
|
---|
| 330 | {
|
---|
| 331 | Debug << "error: child link not found" << endl;
|
---|
| 332 | }
|
---|
| 333 | else
|
---|
| 334 | {
|
---|
| 335 | (*it) = cur;
|
---|
| 336 | }
|
---|
| 337 | }
|
---|
| 338 |
|
---|
| 339 |
|
---|
[1551] | 340 |
|
---|
[580] | 341 | /************************************************************************/
|
---|
[462] | 342 | /* class ViewCellsStatistics implementation */
|
---|
| 343 | /************************************************************************/
|
---|
| 344 |
|
---|
[580] | 345 |
|
---|
[463] | 346 | void ViewCellsStatistics::Print(ostream &app) const
|
---|
| 347 | {
|
---|
| 348 | app << "=========== View Cells Statistics ===============\n";
|
---|
| 349 |
|
---|
| 350 | app << setprecision(4);
|
---|
| 351 |
|
---|
| 352 | //app << "#N_CTIME ( Construction time [s] )\n" << Time() << " \n";
|
---|
| 353 |
|
---|
[613] | 354 | app << "#N_OVERALLPVS ( objects in PVS )\n" << pvsSize << endl;
|
---|
[463] | 355 |
|
---|
| 356 | app << "#N_PMAXPVS ( largest PVS )\n" << maxPvs << endl;
|
---|
| 357 |
|
---|
| 358 | app << "#N_PMINPVS ( smallest PVS )\n" << minPvs << endl;
|
---|
| 359 |
|
---|
| 360 | app << "#N_PAVGPVS ( average PVS )\n" << AvgPvs() << endl;
|
---|
| 361 |
|
---|
[485] | 362 | app << "#N_PEMPTYPVS ( view cells with empty PVS )\n" << emptyPvs << endl;
|
---|
[463] | 363 |
|
---|
| 364 | app << "#N_VIEWCELLS ( number of view cells)\n" << viewCells << endl;
|
---|
| 365 |
|
---|
| 366 | app << "#N_AVGLEAVES (average number of leaves per view cell )\n" << AvgLeaves() << endl;
|
---|
| 367 |
|
---|
| 368 | app << "#N_MAXLEAVES ( maximal number of leaves per view cell )\n" << maxLeaves << endl;
|
---|
| 369 |
|
---|
[564] | 370 | app << "#N_INVALID ( number of invalid view cells )\n" << invalid << endl;
|
---|
| 371 |
|
---|
[463] | 372 | app << "========== End of View Cells Statistics ==========\n";
|
---|
[580] | 373 | }
|
---|
| 374 |
|
---|
| 375 |
|
---|
| 376 | /*************************************************************************/
|
---|
| 377 | /* class ViewCellsTree implementation */
|
---|
| 378 | /*************************************************************************/
|
---|
| 379 |
|
---|
| 380 |
|
---|
[1004] | 381 | ViewCellsTree::ViewCellsTree(ViewCellsManager *vcm):
|
---|
[580] | 382 | mRoot(NULL),
|
---|
| 383 | mUseAreaForPvs(false),
|
---|
[584] | 384 | mViewCellsManager(vcm),
|
---|
[752] | 385 | #if 0
|
---|
| 386 | mViewCellsStorage(PVS_IN_INTERIORS)
|
---|
| 387 | #else
|
---|
| 388 | mViewCellsStorage(PVS_IN_LEAVES)
|
---|
| 389 | #endif
|
---|
[580] | 390 | {
|
---|
[1264] | 391 | ReadEnvironment();
|
---|
| 392 | MergeCandidate::sRenderCostWeight = mRenderCostWeight;
|
---|
| 393 | }
|
---|
| 394 |
|
---|
| 395 |
|
---|
| 396 | ViewCellsTree::ViewCellsTree():
|
---|
| 397 | mRoot(NULL),
|
---|
| 398 | mUseAreaForPvs(false),
|
---|
| 399 | mViewCellsManager(NULL),
|
---|
| 400 | #if 0
|
---|
| 401 | mViewCellsStorage(PVS_IN_INTERIORS)
|
---|
| 402 | #else
|
---|
| 403 | mViewCellsStorage(PVS_IN_LEAVES)
|
---|
| 404 | #endif
|
---|
| 405 | {
|
---|
| 406 | ReadEnvironment();
|
---|
| 407 | MergeCandidate::sRenderCostWeight = mRenderCostWeight;
|
---|
| 408 | }
|
---|
| 409 |
|
---|
| 410 |
|
---|
| 411 | void ViewCellsTree::ReadEnvironment()
|
---|
| 412 | {
|
---|
[1004] | 413 | Environment::GetSingleton()->GetBoolValue("ViewCells.Visualization.exportMergedViewCells", mExportMergedViewCells);
|
---|
| 414 | Environment::GetSingleton()->GetFloatValue("ViewCells.maxStaticMemory", mMaxMemory);
|
---|
[580] | 415 |
|
---|
| 416 | //-- merge options
|
---|
[1004] | 417 | Environment::GetSingleton()->GetFloatValue("ViewCells.PostProcess.renderCostWeight", mRenderCostWeight);
|
---|
| 418 | Environment::GetSingleton()->GetIntValue("ViewCells.PostProcess.minViewCells", mMergeMinViewCells);
|
---|
| 419 | Environment::GetSingleton()->GetFloatValue("ViewCells.PostProcess.maxCostRatio", mMergeMaxCostRatio);
|
---|
| 420 | Environment::GetSingleton()->GetBoolValue("ViewCells.PostProcess.refine", mRefineViewCells);
|
---|
[582] | 421 |
|
---|
[1004] | 422 | Environment::GetSingleton()->GetIntValue("ViewCells.PostProcess.maxMergesPerPass", mMaxMergesPerPass);
|
---|
| 423 | Environment::GetSingleton()->GetFloatValue("ViewCells.PostProcess.avgCostMaxDeviation", mAvgCostMaxDeviation);
|
---|
[586] | 424 |
|
---|
[938] | 425 | Debug << "============= view cell tree options ================\n";
|
---|
[582] | 426 | Debug << "minimum view cells: " << mMergeMinViewCells << endl;
|
---|
| 427 | Debug << "max cost ratio: " << mMergeMaxCostRatio << endl;
|
---|
| 428 | Debug << "max memory: " << mMaxMemory << endl;
|
---|
[586] | 429 | Debug << "refining view cells: " << mRefineViewCells << endl;
|
---|
[1027] | 430 | Debug << "=========== end view cell tree options ===============\n";
|
---|
[580] | 431 | }
|
---|
| 432 |
|
---|
| 433 |
|
---|
[582] | 434 | // return memory usage in MB
|
---|
| 435 | float ViewCellsTree::GetMemUsage() const
|
---|
| 436 | {
|
---|
[752] | 437 | // TODO
|
---|
[582] | 438 | return 0;
|
---|
| 439 | /*(sizeof(ViewCellsTree) +
|
---|
| 440 | mBspStats.Leaves() * sizeof(BspLeaf) +
|
---|
| 441 | mBspStats.Interior() * sizeof(BspInterior) +
|
---|
| 442 | mBspStats.accumRays * sizeof(RayInfo)) / (1024.0f * 1024.0f);*/
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 |
|
---|
[736] | 446 | int ViewCellsTree::GetNumInitialViewCells(ViewCell *vc) const
|
---|
[580] | 447 | {
|
---|
| 448 | int vcSize = 0;
|
---|
| 449 |
|
---|
| 450 | stack<ViewCell *> tstack;
|
---|
| 451 |
|
---|
| 452 | tstack.push(vc);
|
---|
| 453 |
|
---|
| 454 | while (!tstack.empty())
|
---|
| 455 | {
|
---|
| 456 | ViewCell *vc = tstack.top();
|
---|
| 457 | tstack.pop();
|
---|
| 458 |
|
---|
| 459 | if (vc->IsLeaf())
|
---|
| 460 | {
|
---|
| 461 | ++ vcSize;
|
---|
| 462 | }
|
---|
| 463 | else
|
---|
| 464 | {
|
---|
| 465 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[1233] | 466 |
|
---|
[580] | 467 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[1233] | 468 |
|
---|
[580] | 469 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
[1233] | 470 | {
|
---|
[580] | 471 | tstack.push(*it);
|
---|
[1233] | 472 | }
|
---|
[580] | 473 |
|
---|
| 474 | }
|
---|
| 475 | }
|
---|
| 476 |
|
---|
| 477 | return vcSize;
|
---|
| 478 | }
|
---|
| 479 |
|
---|
| 480 |
|
---|
| 481 | void ViewCellsTree::CollectLeaves(ViewCell *vc, ViewCellContainer &leaves) const
|
---|
| 482 | {
|
---|
| 483 | stack<ViewCell *> tstack;
|
---|
| 484 |
|
---|
| 485 | tstack.push(vc);
|
---|
| 486 |
|
---|
| 487 | while (!tstack.empty())
|
---|
| 488 | {
|
---|
| 489 | ViewCell *vc = tstack.top();
|
---|
| 490 | tstack.pop();
|
---|
| 491 |
|
---|
| 492 | if (vc->IsLeaf())
|
---|
| 493 | {
|
---|
| 494 | leaves.push_back(vc);
|
---|
| 495 | }
|
---|
| 496 | else
|
---|
| 497 | {
|
---|
| 498 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
| 499 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[664] | 500 |
|
---|
[580] | 501 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
[664] | 502 | {
|
---|
[580] | 503 | tstack.push(*it);
|
---|
[664] | 504 | }
|
---|
[580] | 505 |
|
---|
| 506 | }
|
---|
| 507 | }
|
---|
| 508 | }
|
---|
| 509 |
|
---|
| 510 |
|
---|
| 511 | ViewCellsTree::~ViewCellsTree()
|
---|
| 512 | {
|
---|
| 513 | DEL_PTR(mRoot);
|
---|
| 514 | }
|
---|
| 515 |
|
---|
| 516 |
|
---|
| 517 | int ViewCellsTree::ConstructMergeTree(const VssRayContainer &rays,
|
---|
| 518 | const ObjectContainer &objects)
|
---|
| 519 | {
|
---|
[582] | 520 | mNumActiveViewCells = (int)mViewCellsManager->GetViewCells().size();
|
---|
[580] | 521 |
|
---|
| 522 | float variance = 0;
|
---|
| 523 | int totalPvs = 0;
|
---|
[600] | 524 | float totalRenderCost = 0;
|
---|
[580] | 525 |
|
---|
| 526 | //-- compute statistics values of initial view cells
|
---|
[600] | 527 | mViewCellsManager->EvaluateRenderStatistics(totalRenderCost,
|
---|
[580] | 528 | mExpectedCost,
|
---|
| 529 | mDeviation,
|
---|
| 530 | variance,
|
---|
| 531 | totalPvs,
|
---|
| 532 | mAvgRenderCost);
|
---|
| 533 |
|
---|
| 534 |
|
---|
| 535 | //-- fill merge queue
|
---|
| 536 | vector<MergeCandidate> candidates;
|
---|
| 537 |
|
---|
| 538 | mViewCellsManager->CollectMergeCandidates(rays, candidates);
|
---|
[703] | 539 |
|
---|
[580] | 540 | while(!candidates.empty())
|
---|
| 541 | {
|
---|
| 542 | MergeCandidate mc = candidates.back();
|
---|
| 543 | candidates.pop_back();
|
---|
| 544 | EvalMergeCost(mc);
|
---|
| 545 | mMergeQueue.push(mc);
|
---|
| 546 | }
|
---|
| 547 |
|
---|
| 548 | Debug << "************************* merge ***********************************" << endl;
|
---|
| 549 | Debug << "deviation: " << mDeviation << endl;
|
---|
| 550 | Debug << "avg render cost: " << mAvgRenderCost << endl;
|
---|
[600] | 551 | Debug << "expected cost: " << mExpectedCost << endl;
|
---|
[580] | 552 |
|
---|
| 553 |
|
---|
| 554 | ViewCellsManager::PvsStatistics pvsStats;
|
---|
| 555 | mViewCellsManager->GetPvsStatistics(pvsStats);
|
---|
| 556 |
|
---|
[605] | 557 | //static float expectedValue = pvsStats.avgPvs;
|
---|
[580] | 558 |
|
---|
[881] | 559 | //-- the current view cells are kept in this container
|
---|
| 560 | //-- we start with the current view cells from the view cell manager.
|
---|
| 561 | //-- The active view cells will change with subsequent merges
|
---|
[752] | 562 |
|
---|
[720] | 563 | // todo: should rather take initial view cells
|
---|
| 564 | ViewCellContainer &activeViewCells = mViewCellsManager->GetViewCells();
|
---|
| 565 |
|
---|
[752] | 566 |
|
---|
[580] | 567 | ViewCell::NewMail();
|
---|
| 568 |
|
---|
| 569 | MergeStatistics mergeStats;
|
---|
| 570 | mergeStats.Start();
|
---|
| 571 |
|
---|
| 572 | long startTime = GetTime();
|
---|
| 573 |
|
---|
| 574 | mergeStats.collectTime = TimeDiff(startTime, GetTime());
|
---|
| 575 | mergeStats.candidates = (int)mMergeQueue.size();
|
---|
| 576 | startTime = GetTime();
|
---|
| 577 |
|
---|
| 578 | // frequency stats are updated
|
---|
[650] | 579 | const int statsOut = 500;
|
---|
[734] | 580 |
|
---|
[580] | 581 | // passes are needed for statistics, because we don't want to record
|
---|
| 582 | // every merge
|
---|
| 583 | int pass = 0;
|
---|
| 584 | int mergedPerPass = 0;
|
---|
| 585 | float realExpectedCost = mExpectedCost;
|
---|
| 586 | float realAvgRenderCost = mAvgRenderCost;
|
---|
[582] | 587 | int realNumActiveViewCells = mNumActiveViewCells;
|
---|
[580] | 588 |
|
---|
| 589 | // maximal ratio of old expected render cost to expected render
|
---|
| 590 | // when the the render queue has to be reset.
|
---|
[582] | 591 | int numMergedViewCells = 0;
|
---|
[938] | 592 |
|
---|
[580] | 593 |
|
---|
| 594 | cout << "actual merge starts now ... " << endl;
|
---|
[604] | 595 |
|
---|
[580] | 596 | //-- use priority queue to merge leaf pairs
|
---|
[612] | 597 |
|
---|
[881] | 598 | while (!mMergeQueue.empty())
|
---|
[580] | 599 | {
|
---|
| 600 | //-- reset merge queue if the ratio of current expected cost / real expected cost
|
---|
| 601 | // too small or after a given number of merges
|
---|
[938] | 602 | if ((mergedPerPass > mMaxMergesPerPass) ||
|
---|
| 603 | (mAvgCostMaxDeviation > mAvgRenderCost / realAvgRenderCost))
|
---|
[580] | 604 | {
|
---|
| 605 | Debug << "************ reset queue *****************\n"
|
---|
[938] | 606 | << "ratios: " << mAvgCostMaxDeviation
|
---|
[580] | 607 | << " real avg render cost " << realAvgRenderCost << " average render cost " << mAvgRenderCost
|
---|
[938] | 608 | << " merged per pass : " << mergedPerPass << " of maximal " << mMaxMergesPerPass << endl;
|
---|
[580] | 609 |
|
---|
| 610 | Debug << "Values before reset: "
|
---|
| 611 | << " erc: " << mExpectedCost
|
---|
| 612 | << " avgrc: " << mAvgRenderCost
|
---|
| 613 | << " dev: " << mDeviation << endl;
|
---|
| 614 |
|
---|
| 615 | // adjust render cost
|
---|
| 616 | ++ pass;
|
---|
| 617 |
|
---|
| 618 | mergedPerPass = 0;
|
---|
| 619 | mExpectedCost = realExpectedCost;
|
---|
| 620 | mAvgRenderCost = realAvgRenderCost;
|
---|
[582] | 621 | mNumActiveViewCells = realNumActiveViewCells;
|
---|
[580] | 622 |
|
---|
[582] | 623 | const int numMergedViewCells = UpdateActiveViewCells(activeViewCells);
|
---|
| 624 |
|
---|
[1603] | 625 | /////////////////
|
---|
| 626 | //-- reset / refine the view cells
|
---|
[720] | 627 | //-- priorities are recomputed
|
---|
| 628 | //-- the candidates are put back into merge queue
|
---|
[1603] | 629 |
|
---|
[586] | 630 | if (mRefineViewCells)
|
---|
| 631 | RefineViewCells(rays, objects);
|
---|
| 632 | else
|
---|
| 633 | ResetMergeQueue();
|
---|
[580] | 634 |
|
---|
| 635 | Debug << "Values after reset: "
|
---|
| 636 | << " erc: " << mExpectedCost
|
---|
| 637 | << " avg: " << mAvgRenderCost
|
---|
| 638 | << " dev: " << mDeviation << endl;
|
---|
| 639 |
|
---|
| 640 | if (mExportMergedViewCells)
|
---|
| 641 | {
|
---|
[582] | 642 | ExportMergedViewCells(activeViewCells, objects, numMergedViewCells);
|
---|
[580] | 643 | }
|
---|
| 644 | }
|
---|
| 645 |
|
---|
| 646 |
|
---|
| 647 | MergeCandidate mc = mMergeQueue.top();
|
---|
| 648 | mMergeQueue.pop();
|
---|
| 649 |
|
---|
[710] | 650 | // both view cells equal because of previous merges
|
---|
[582] | 651 | // NOTE: do I really still need this? probably cannot happen!!
|
---|
[580] | 652 | if (mc.mLeftViewCell == mc.mRightViewCell)
|
---|
| 653 | continue;
|
---|
| 654 |
|
---|
| 655 | if (mc.IsValid())
|
---|
| 656 | {
|
---|
| 657 | ViewCell::NewMail();
|
---|
[600] | 658 |
|
---|
| 659 | //-- update statistical values
|
---|
[582] | 660 | -- realNumActiveViewCells;
|
---|
[580] | 661 | ++ mergeStats.merged;
|
---|
| 662 | ++ mergedPerPass;
|
---|
| 663 |
|
---|
[600] | 664 | const float renderCostIncr = mc.GetRenderCost();
|
---|
| 665 | const float mergeCostIncr = mc.GetMergeCost();
|
---|
[580] | 666 |
|
---|
[600] | 667 | totalRenderCost += renderCostIncr;
|
---|
[580] | 668 | mDeviation += mc.GetDeviationIncr();
|
---|
[710] | 669 |
|
---|
| 670 |
|
---|
| 671 | //-- merge the view cells of leaf1 and leaf2
|
---|
[580] | 672 | int pvsDiff;
|
---|
| 673 | ViewCellInterior *mergedVc =
|
---|
| 674 | MergeViewCells(mc.mLeftViewCell, mc.mRightViewCell, pvsDiff);
|
---|
[710] | 675 |
|
---|
[580] | 676 |
|
---|
[600] | 677 | // total render cost and deviation has changed
|
---|
| 678 | // real expected cost will be larger than expected cost used for the
|
---|
| 679 | // cost heuristics, but cannot recompute costs on each increase of the
|
---|
| 680 | // expected cost
|
---|
[580] | 681 | totalPvs += pvsDiff;
|
---|
[600] | 682 | realExpectedCost = totalRenderCost / (float)realNumActiveViewCells;
|
---|
| 683 | realAvgRenderCost = (float)totalPvs / (float)realNumActiveViewCells;
|
---|
| 684 |
|
---|
[801] | 685 | // set merge cost to this node for priority traversal
|
---|
[837] | 686 | mergedVc->SetMergeCost(totalRenderCost);
|
---|
| 687 |
|
---|
| 688 | // HACK
|
---|
| 689 | //mergedVc->SetMergeCost(1.0f / (float)realNumActiveViewCells);
|
---|
[582] | 690 |
|
---|
[837] | 691 | // check if "siblings (back and front node of the same parent)
|
---|
[1603] | 692 | if (0)
|
---|
[837] | 693 | ++ mergeStats.siblings;
|
---|
| 694 | // set the coŽst for rendering a view cell
|
---|
[608] | 695 | mergedVc->SetCost(realExpectedCost);
|
---|
[607] | 696 |
|
---|
[650] | 697 | if ((mergeStats.merged % statsOut) == 0)
|
---|
[580] | 698 | cout << "merged " << mergeStats.merged << " view cells" << endl;
|
---|
| 699 |
|
---|
| 700 | }
|
---|
| 701 | else
|
---|
| 702 | {
|
---|
| 703 | // merge candidate not valid, because one of the leaves was already
|
---|
| 704 | // merged with another one => validate and reinsert into queue
|
---|
[582] | 705 | if (ValidateMergeCandidate(mc))
|
---|
| 706 | {
|
---|
| 707 | EvalMergeCost(mc);
|
---|
| 708 | mMergeQueue.push(mc);
|
---|
| 709 | }
|
---|
[580] | 710 | }
|
---|
[612] | 711 |
|
---|
[580] | 712 | }
|
---|
| 713 |
|
---|
| 714 | // adjust stats and reset queue one final time
|
---|
| 715 | mExpectedCost = realExpectedCost;
|
---|
| 716 | mAvgRenderCost = realAvgRenderCost;
|
---|
[582] | 717 | mNumActiveViewCells = realNumActiveViewCells;
|
---|
[580] | 718 |
|
---|
[582] | 719 | UpdateActiveViewCells(activeViewCells);
|
---|
[580] | 720 |
|
---|
[586] | 721 | // refine view cells and reset costs
|
---|
| 722 | if (mRefineViewCells)
|
---|
| 723 | RefineViewCells(rays, objects);
|
---|
| 724 | else
|
---|
| 725 | ResetMergeQueue();
|
---|
| 726 |
|
---|
[708] | 727 |
|
---|
[580] | 728 | // create a root node if the merge was not done till root level,
|
---|
| 729 | // else take the single node as new root
|
---|
[582] | 730 | if ((int)activeViewCells.size() > 1)
|
---|
[580] | 731 | {
|
---|
[587] | 732 | Debug << "creating root of view cell hierarchy for "
|
---|
| 733 | << (int)activeViewCells.size() << " view cells" << endl;
|
---|
[612] | 734 |
|
---|
[582] | 735 | ViewCellInterior *root = mViewCellsManager->MergeViewCells(activeViewCells);
|
---|
[710] | 736 |
|
---|
| 737 | ViewCellContainer::const_iterator it, it_end = root->mChildren.end();
|
---|
| 738 |
|
---|
| 739 | for (it = root->mChildren.begin(); it != it_end; ++ it)
|
---|
| 740 | (*it)->SetParent(root);
|
---|
| 741 |
|
---|
[600] | 742 | root->SetMergeCost(totalRenderCost);
|
---|
[608] | 743 | // $$JB keep this 0 temporarilly
|
---|
| 744 | root->SetCost(0.0f);
|
---|
[612] | 745 |
|
---|
[580] | 746 | mRoot = root;
|
---|
| 747 | }
|
---|
[710] | 748 | // normal case
|
---|
| 749 | else if (!activeViewCells.empty())
|
---|
[580] | 750 | {
|
---|
[582] | 751 | Debug << "setting root of the merge history" << endl;
|
---|
| 752 | mRoot = activeViewCells[0];
|
---|
[580] | 753 | }
|
---|
[752] | 754 | else
|
---|
| 755 | {
|
---|
| 756 | Debug << "big error, root is NULL" << endl;
|
---|
| 757 | }
|
---|
[708] | 758 |
|
---|
[644] | 759 | //-- empty merge queue just in case
|
---|
[600] | 760 | while (!mMergeQueue.empty())
|
---|
| 761 | {
|
---|
| 762 | mMergeQueue.pop();
|
---|
| 763 | }
|
---|
[837] | 764 |
|
---|
| 765 | // test if voluje is equal
|
---|
| 766 | Debug << "volume of the root view cell: " << mRoot->GetVolume() << " " << mViewCellsManager->GetViewSpaceBox().GetVolume() << endl;
|
---|
| 767 |
|
---|
| 768 | //hack!!
|
---|
| 769 | //mRoot->GetPvs().Clear();
|
---|
| 770 |
|
---|
| 771 | // TODO: delete because makes no sense here
|
---|
[580] | 772 | mergeStats.expectedRenderCost = realExpectedCost;
|
---|
| 773 | mergeStats.deviation = mDeviation;
|
---|
| 774 |
|
---|
| 775 | // we want to optimize this heuristics
|
---|
| 776 | mergeStats.heuristics =
|
---|
| 777 | mDeviation * (1.0f - mRenderCostWeight) +
|
---|
| 778 | mExpectedCost * mRenderCostWeight;
|
---|
| 779 |
|
---|
| 780 | mergeStats.mergeTime = TimeDiff(startTime, GetTime());
|
---|
| 781 | mergeStats.Stop();
|
---|
| 782 | Debug << mergeStats << endl << endl;
|
---|
| 783 |
|
---|
[608] | 784 | // assign colors for the view cells so that at least one is always consistent
|
---|
| 785 | AssignRandomColors();
|
---|
[708] | 786 |
|
---|
[580] | 787 | //TODO: should return sample contributions?
|
---|
| 788 | return mergeStats.merged;
|
---|
| 789 | }
|
---|
| 790 |
|
---|
| 791 |
|
---|
[584] | 792 | ViewCell *ViewCellsTree::GetRoot() const
|
---|
[581] | 793 | {
|
---|
| 794 | return mRoot;
|
---|
| 795 | }
|
---|
| 796 |
|
---|
| 797 |
|
---|
[580] | 798 | void ViewCellsTree::ResetMergeQueue()
|
---|
| 799 | {
|
---|
| 800 | cout << "reset merge queue ... ";
|
---|
| 801 |
|
---|
| 802 | vector<MergeCandidate> buf;
|
---|
| 803 | buf.reserve(mMergeQueue.size());
|
---|
| 804 |
|
---|
| 805 |
|
---|
| 806 | // store merge candidates in intermediate buffer
|
---|
| 807 | while (!mMergeQueue.empty())
|
---|
| 808 | {
|
---|
| 809 | MergeCandidate mc = mMergeQueue.top();
|
---|
| 810 | mMergeQueue.pop();
|
---|
| 811 |
|
---|
| 812 | // recalculate cost
|
---|
[582] | 813 | if (ValidateMergeCandidate(mc))
|
---|
| 814 | {
|
---|
| 815 | EvalMergeCost(mc);
|
---|
| 816 | buf.push_back(mc);
|
---|
| 817 | }
|
---|
[580] | 818 | }
|
---|
| 819 |
|
---|
| 820 | vector<MergeCandidate>::const_iterator bit, bit_end = buf.end();
|
---|
| 821 |
|
---|
| 822 | // reinsert back into queue
|
---|
| 823 | for (bit = buf.begin(); bit != bit_end; ++ bit)
|
---|
| 824 | {
|
---|
| 825 | mMergeQueue.push(*bit);
|
---|
| 826 | }
|
---|
| 827 |
|
---|
| 828 | cout << "finished" << endl;
|
---|
| 829 | }
|
---|
| 830 |
|
---|
| 831 |
|
---|
[1002] | 832 | float ViewCellsTree::ComputeMergedPvsCost(const ObjectPvs &pvs1,
|
---|
| 833 | const ObjectPvs &pvs2) const
|
---|
| 834 | {
|
---|
| 835 | // computes render cost of merge
|
---|
| 836 | float renderCost = 0;
|
---|
| 837 |
|
---|
| 838 | // compute new pvs size
|
---|
| 839 | ObjectPvsMap::const_iterator it, it_end = pvs1.mEntries.end();
|
---|
| 840 |
|
---|
| 841 | Intersectable::NewMail();
|
---|
| 842 |
|
---|
| 843 | // first mail all objects in first pvs
|
---|
| 844 | for (it = pvs1.mEntries.begin(); it != it_end; ++ it)
|
---|
| 845 | {
|
---|
| 846 | Intersectable *obj = (*it).first;
|
---|
| 847 |
|
---|
| 848 | obj->Mail();
|
---|
| 849 | renderCost += mViewCellsManager->EvalRenderCost(obj);
|
---|
| 850 | }
|
---|
| 851 |
|
---|
| 852 | it_end = pvs2.mEntries.end();
|
---|
| 853 |
|
---|
| 854 |
|
---|
| 855 | for (it = pvs2.mEntries.begin(); it != it_end; ++ it)
|
---|
| 856 | {
|
---|
| 857 | Intersectable *obj = (*it).first;
|
---|
| 858 |
|
---|
| 859 | // test if object already considered
|
---|
| 860 | if (!obj->Mailed())
|
---|
| 861 | {
|
---|
| 862 | renderCost += mViewCellsManager->EvalRenderCost(obj);
|
---|
| 863 | }
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | return renderCost;
|
---|
| 867 | }
|
---|
| 868 |
|
---|
| 869 |
|
---|
[582] | 870 | int ViewCellsTree::UpdateActiveViewCells(ViewCellContainer &viewCells)
|
---|
[580] | 871 | {
|
---|
[582] | 872 | int numMergedViewCells = 0;
|
---|
[580] | 873 |
|
---|
[584] | 874 | Debug << "updating active vc: " << (int)viewCells.size() << endl;
|
---|
[1141] | 875 |
|
---|
| 876 | // find all already merged view cells and remove them from the
|
---|
| 877 | // container view cells
|
---|
[582] | 878 |
|
---|
| 879 | // sort out all view cells which are not active anymore, i.e., they
|
---|
| 880 | // were already part of a merge
|
---|
[580] | 881 | int i = 0;
|
---|
| 882 |
|
---|
[582] | 883 | ViewCell::NewMail();
|
---|
| 884 |
|
---|
[580] | 885 | while (1)
|
---|
| 886 | {
|
---|
[582] | 887 | // remove all merged view cells from end of the vector
|
---|
| 888 | while (!viewCells.empty() && (viewCells.back()->GetParent()))
|
---|
[580] | 889 | {
|
---|
| 890 | viewCells.pop_back();
|
---|
| 891 | }
|
---|
| 892 |
|
---|
| 893 | // all merged view cells have been found
|
---|
[710] | 894 | if (i >= (int)viewCells.size())
|
---|
[580] | 895 | break;
|
---|
| 896 |
|
---|
[710] | 897 | // already merged this view cell, put it to end of vector
|
---|
[582] | 898 | if (viewCells[i]->GetParent())
|
---|
[580] | 899 | swap(viewCells[i], viewCells.back());
|
---|
| 900 |
|
---|
[752] | 901 | // mail view cell that it has not been merged
|
---|
[710] | 902 | viewCells[i]->Mail();
|
---|
| 903 |
|
---|
| 904 | // increase loop counter
|
---|
| 905 | ++ i;
|
---|
[580] | 906 | }
|
---|
| 907 |
|
---|
[582] | 908 |
|
---|
[580] | 909 | // add new view cells to container only if they don't have been
|
---|
| 910 | // merged in the mean time
|
---|
[582] | 911 | ViewCellContainer::const_iterator ait, ait_end = mMergedViewCells.end();
|
---|
[752] | 912 |
|
---|
[582] | 913 | for (ait = mMergedViewCells.begin(); ait != ait_end; ++ ait)
|
---|
[580] | 914 | {
|
---|
[582] | 915 | ViewCell *vc = mMergedViewCells.back();
|
---|
| 916 | if (!vc->GetParent() && !vc->Mailed())
|
---|
[580] | 917 | {
|
---|
[582] | 918 | vc->Mail();
|
---|
| 919 | viewCells.push_back(vc);
|
---|
| 920 | ++ numMergedViewCells;
|
---|
[580] | 921 | }
|
---|
| 922 | }
|
---|
| 923 |
|
---|
[752] | 924 | // dispose old merged view cells
|
---|
[582] | 925 | mMergedViewCells.clear();
|
---|
| 926 |
|
---|
[580] | 927 | // update standard deviation
|
---|
| 928 | ViewCellContainer::const_iterator vit, vit_end = viewCells.end();
|
---|
| 929 |
|
---|
| 930 | mDeviation = 0;
|
---|
| 931 |
|
---|
| 932 | for (vit = viewCells.begin(); vit != vit_end; ++ vit)
|
---|
| 933 | {
|
---|
[728] | 934 | const int lower = mViewCellsManager->GetMinPvsSize();
|
---|
| 935 | const int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
[752] | 936 |
|
---|
[1168] | 937 | const float penalty = EvalPvsPenalty((*vit)->GetPvs().CountObjectsInPvs(), lower, upper);
|
---|
[580] | 938 |
|
---|
| 939 | mDeviation += fabs(mAvgRenderCost - penalty);
|
---|
| 940 | }
|
---|
| 941 |
|
---|
| 942 | mDeviation /= (float)viewCells.size();
|
---|
[582] | 943 |
|
---|
| 944 | return numMergedViewCells;
|
---|
[580] | 945 | }
|
---|
| 946 |
|
---|
| 947 |
|
---|
| 948 | void ViewCellsTree::ExportMergedViewCells(ViewCellContainer &viewCells,
|
---|
| 949 | const ObjectContainer &objects,
|
---|
[582] | 950 | const int numMergedViewCells)
|
---|
[580] | 951 | {
|
---|
| 952 |
|
---|
| 953 |
|
---|
| 954 | char s[64];
|
---|
| 955 |
|
---|
| 956 | sprintf(s, "merged_viewcells%07d.x3d", (int)viewCells.size());
|
---|
| 957 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
| 958 |
|
---|
| 959 | if (exporter)
|
---|
| 960 | {
|
---|
| 961 | cout << "exporting " << (int)viewCells.size() << " merged view cells ... ";
|
---|
| 962 | exporter->ExportGeometry(objects);
|
---|
| 963 | //Debug << "vc size " << (int)viewCells.size() << " merge queue size: " << (int)mMergeQueue.size() << endl;
|
---|
| 964 | ViewCellContainer::const_iterator it, it_end = viewCells.end();
|
---|
| 965 |
|
---|
| 966 | int i = 0;
|
---|
| 967 | for (it = viewCells.begin(); it != it_end; ++ it)
|
---|
| 968 | {
|
---|
| 969 | Material m;
|
---|
| 970 | // assign special material to new view cells
|
---|
| 971 | // new view cells are on the back of container
|
---|
[582] | 972 | if (i ++ >= (viewCells.size() - numMergedViewCells))
|
---|
[580] | 973 | {
|
---|
| 974 | //m = RandomMaterial();
|
---|
| 975 | m.mDiffuseColor.r = RandomValue(0.5f, 1.0f);
|
---|
| 976 | m.mDiffuseColor.g = RandomValue(0.5f, 1.0f);
|
---|
| 977 | m.mDiffuseColor.b = RandomValue(0.5f, 1.0f);
|
---|
| 978 | }
|
---|
| 979 | else
|
---|
| 980 | {
|
---|
| 981 | float col = RandomValue(0.1f, 0.4f);
|
---|
| 982 | m.mDiffuseColor.r = col;
|
---|
| 983 | m.mDiffuseColor.g = col;
|
---|
| 984 | m.mDiffuseColor.b = col;
|
---|
| 985 | }
|
---|
| 986 |
|
---|
| 987 | exporter->SetForcedMaterial(m);
|
---|
[1416] | 988 | mViewCellsManager->ExportViewCellGeometry(exporter, *it, NULL, NULL);
|
---|
[580] | 989 | }
|
---|
[1416] | 990 |
|
---|
[580] | 991 | delete exporter;
|
---|
| 992 | cout << "finished" << endl;
|
---|
| 993 | }
|
---|
| 994 | }
|
---|
| 995 |
|
---|
| 996 |
|
---|
| 997 | // TODO: should be done in view cells manager
|
---|
[1141] | 998 | ViewCellInterior *ViewCellsTree::MergeViewCells(ViewCell *left,
|
---|
| 999 | ViewCell *right,
|
---|
[586] | 1000 | int &pvsDiff) //const
|
---|
[580] | 1001 | {
|
---|
[1141] | 1002 | // create merged view cell
|
---|
| 1003 | ViewCellInterior *vc =
|
---|
| 1004 | mViewCellsManager->MergeViewCells(left, right);
|
---|
[580] | 1005 |
|
---|
| 1006 | // if merge was unsuccessful
|
---|
| 1007 | if (!vc) return NULL;
|
---|
| 1008 |
|
---|
[752] | 1009 | // set to the new parent view cell
|
---|
[1141] | 1010 | left->SetParent(vc);
|
---|
| 1011 | right->SetParent(vc);
|
---|
[710] | 1012 |
|
---|
[1141] | 1013 |
|
---|
[580] | 1014 | if (mUseAreaForPvs)
|
---|
[710] | 1015 | {
|
---|
[1141] | 1016 | // set new area of view cell
|
---|
| 1017 | // not not correct, but costly to compute real area!!
|
---|
| 1018 | vc->SetArea(left->GetArea() + right->GetArea());
|
---|
[710] | 1019 | }
|
---|
[580] | 1020 | else
|
---|
[1141] | 1021 | { // set new volume of view cell
|
---|
| 1022 | vc->SetVolume(left->GetVolume() + right->GetVolume());
|
---|
[602] | 1023 | }
|
---|
[710] | 1024 |
|
---|
| 1025 |
|
---|
[580] | 1026 | // important so other merge candidates sharing this view cell
|
---|
| 1027 | // are notified that the merge cost must be updated!!
|
---|
| 1028 | vc->Mail();
|
---|
| 1029 |
|
---|
[1168] | 1030 | const int pvs1 = left->GetPvs().CountObjectsInPvs();
|
---|
| 1031 | const int pvs2 = right->GetPvs().CountObjectsInPvs();
|
---|
[580] | 1032 |
|
---|
| 1033 |
|
---|
[1141] | 1034 | // the new view cells are stored in this container
|
---|
[582] | 1035 | mMergedViewCells.push_back(vc);
|
---|
[580] | 1036 |
|
---|
[1168] | 1037 | pvsDiff = vc->GetPvs().CountObjectsInPvs() - pvs1 - pvs2;
|
---|
[580] | 1038 |
|
---|
[752] | 1039 |
|
---|
[1141] | 1040 | // don't store pvs in interior cells, just a scalar
|
---|
[752] | 1041 | if (mViewCellsStorage == PVS_IN_LEAVES)
|
---|
| 1042 | {
|
---|
[1168] | 1043 | // set scalars
|
---|
| 1044 | mViewCellsManager->UpdateScalarPvsSize(left,
|
---|
[1586] | 1045 | left->GetPvs().CountObjectsInPvs(),
|
---|
| 1046 | left->GetPvs().GetSize());
|
---|
[1168] | 1047 |
|
---|
[1141] | 1048 | // remove pvs, we don't store interior pvss
|
---|
| 1049 | if (!left->IsLeaf())
|
---|
| 1050 | {
|
---|
| 1051 | left->GetPvs().Clear();
|
---|
| 1052 | }
|
---|
| 1053 |
|
---|
[1168] | 1054 | // set scalars
|
---|
| 1055 | mViewCellsManager->UpdateScalarPvsSize(right,
|
---|
| 1056 | right->GetPvs().CountObjectsInPvs(),
|
---|
| 1057 | right->GetPvs().GetSize());
|
---|
| 1058 |
|
---|
[1141] | 1059 | right->mPvsSizeValid = true;
|
---|
[752] | 1060 |
|
---|
[1141] | 1061 | // remove pvs, we don't store interior pvss
|
---|
| 1062 | if (!right->IsLeaf())
|
---|
| 1063 | {
|
---|
| 1064 | right->GetPvs().Clear();
|
---|
| 1065 | }
|
---|
| 1066 | }
|
---|
[752] | 1067 |
|
---|
[580] | 1068 | return vc;
|
---|
| 1069 | }
|
---|
| 1070 |
|
---|
| 1071 |
|
---|
[586] | 1072 | int ViewCellsTree::RefineViewCells(const VssRayContainer &rays,
|
---|
| 1073 | const ObjectContainer &objects)
|
---|
[580] | 1074 | {
|
---|
| 1075 | Debug << "refining " << (int)mMergeQueue.size() << " candidates " << endl;
|
---|
[586] | 1076 |
|
---|
| 1077 | // intermediate buffer for shuffled view cells
|
---|
| 1078 | vector<MergeCandidate> buf;
|
---|
| 1079 | buf.reserve(mMergeQueue.size());
|
---|
| 1080 |
|
---|
[580] | 1081 | // Use priority queue of remaining leaf pairs
|
---|
| 1082 | // The candidates either share the same view cells or
|
---|
| 1083 | // are border leaves which share a boundary.
|
---|
| 1084 | // We test if they can be shuffled, i.e.,
|
---|
| 1085 | // either one leaf is made part of one view cell or the other
|
---|
| 1086 | // leaf is made part of the other view cell. It is tested if the
|
---|
| 1087 | // remaining view cells are "better" than the old ones.
|
---|
| 1088 |
|
---|
[586] | 1089 | const int numPasses = 3;
|
---|
[580] | 1090 | int pass = 0;
|
---|
| 1091 | int passShuffled = 0;
|
---|
| 1092 | int shuffled = 0;
|
---|
| 1093 | int shuffledViewCells = 0;
|
---|
| 1094 |
|
---|
| 1095 | ViewCell::NewMail();
|
---|
| 1096 |
|
---|
[586] | 1097 | while (!mMergeQueue.empty())
|
---|
[580] | 1098 | {
|
---|
[586] | 1099 | MergeCandidate mc = mMergeQueue.top();
|
---|
| 1100 | mMergeQueue.pop();
|
---|
[580] | 1101 |
|
---|
[586] | 1102 | // both view cells equal or already shuffled
|
---|
| 1103 | if ((mc.GetLeftViewCell() == mc.GetRightViewCell()) ||
|
---|
| 1104 | mc.GetLeftViewCell()->IsLeaf() || mc.GetRightViewCell()->IsLeaf())
|
---|
| 1105 | {
|
---|
| 1106 | continue;
|
---|
| 1107 | }
|
---|
[580] | 1108 |
|
---|
[586] | 1109 | // candidate for shuffling
|
---|
| 1110 | const bool wasShuffled = ShuffleLeaves(mc);
|
---|
[580] | 1111 |
|
---|
[586] | 1112 | // shuffled or put into other queue for further refine
|
---|
| 1113 | if (wasShuffled)
|
---|
| 1114 | {
|
---|
| 1115 | ++ passShuffled;
|
---|
| 1116 |
|
---|
| 1117 | if (!mc.GetLeftViewCell()->Mailed())
|
---|
[580] | 1118 | {
|
---|
[586] | 1119 | mc.GetLeftViewCell()->Mail();
|
---|
| 1120 | ++ shuffledViewCells;
|
---|
[580] | 1121 | }
|
---|
[586] | 1122 | if (!mc.GetRightViewCell()->Mailed())
|
---|
[580] | 1123 | {
|
---|
[586] | 1124 | mc.GetRightViewCell()->Mail();
|
---|
| 1125 | ++ shuffledViewCells;
|
---|
[580] | 1126 | }
|
---|
| 1127 | }
|
---|
| 1128 |
|
---|
[586] | 1129 | // put back into intermediate vector
|
---|
| 1130 | buf.push_back(mc);
|
---|
[580] | 1131 | }
|
---|
| 1132 |
|
---|
[586] | 1133 |
|
---|
| 1134 | //-- in the end, the candidates must be in the mergequeue again
|
---|
| 1135 | // with the correct cost
|
---|
| 1136 |
|
---|
| 1137 | cout << "reset merge queue ... ";
|
---|
| 1138 |
|
---|
| 1139 |
|
---|
| 1140 | vector<MergeCandidate>::const_iterator bit, bit_end = buf.end();
|
---|
| 1141 |
|
---|
| 1142 | for (bit = buf.begin(); bit != bit_end; ++ bit)
|
---|
| 1143 | {
|
---|
| 1144 | MergeCandidate mc = *bit;
|
---|
| 1145 | // recalculate cost
|
---|
| 1146 | if (ValidateMergeCandidate(mc))
|
---|
| 1147 | {
|
---|
| 1148 | EvalMergeCost(mc);
|
---|
| 1149 | mMergeQueue.push(mc);
|
---|
| 1150 | }
|
---|
[580] | 1151 | }
|
---|
| 1152 |
|
---|
[586] | 1153 | cout << "finished" << endl;
|
---|
| 1154 |
|
---|
[580] | 1155 | return shuffledViewCells;
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
| 1158 |
|
---|
| 1159 | inline int AddedPvsSize(ObjectPvs pvs1, const ObjectPvs &pvs2)
|
---|
| 1160 | {
|
---|
| 1161 | return pvs1.AddPvs(pvs2);
|
---|
| 1162 | }
|
---|
| 1163 |
|
---|
| 1164 |
|
---|
| 1165 | // recomputes pvs size minus pvs of leaf l
|
---|
| 1166 | #if 0
|
---|
| 1167 | inline int SubtractedPvsSize(BspViewCell *vc, BspLeaf *l, const ObjectPvs &pvs2)
|
---|
| 1168 | {
|
---|
| 1169 | ObjectPvs pvs;
|
---|
| 1170 | vector<BspLeaf *>::const_iterator it, it_end = vc->mLeaves.end();
|
---|
| 1171 | for (it = vc->mLeaves.begin(); it != vc->mLeaves.end(); ++ it)
|
---|
| 1172 | if (*it != l)
|
---|
| 1173 | pvs.AddPvs(*(*it)->mPvs);
|
---|
| 1174 | return pvs.GetSize();
|
---|
| 1175 | }
|
---|
| 1176 | #endif
|
---|
| 1177 |
|
---|
| 1178 |
|
---|
| 1179 | // computes pvs1 minus pvs2
|
---|
| 1180 | inline int SubtractedPvsSize(ObjectPvs pvs1, const ObjectPvs &pvs2)
|
---|
| 1181 | {
|
---|
| 1182 | return pvs1.SubtractPvs(pvs2);
|
---|
| 1183 | }
|
---|
| 1184 |
|
---|
| 1185 |
|
---|
| 1186 | float ViewCellsTree::EvalShuffleCost(ViewCell *leaf,
|
---|
[586] | 1187 | ViewCellInterior *vc1,
|
---|
| 1188 | ViewCellInterior *vc2) const
|
---|
[580] | 1189 | {
|
---|
| 1190 | //const int pvs1 = SubtractedPvsSize(vc1, leaf, *leaf->mPvs);
|
---|
| 1191 | const int pvs1 = SubtractedPvsSize(vc1->GetPvs(), leaf->GetPvs());
|
---|
| 1192 | const int pvs2 = AddedPvsSize(vc2->GetPvs(), leaf->GetPvs());
|
---|
| 1193 |
|
---|
| 1194 | const int lowerPvsLimit = mViewCellsManager->GetMinPvsSize();
|
---|
| 1195 | const int upperPvsLimit = mViewCellsManager->GetMaxPvsSize();
|
---|
| 1196 |
|
---|
| 1197 | const float pvsPenalty1 =
|
---|
| 1198 | EvalPvsPenalty(pvs1, lowerPvsLimit, upperPvsLimit);
|
---|
| 1199 |
|
---|
| 1200 | const float pvsPenalty2 =
|
---|
| 1201 | EvalPvsPenalty(pvs2, lowerPvsLimit, upperPvsLimit);
|
---|
| 1202 |
|
---|
| 1203 |
|
---|
| 1204 | // don't shuffle leaves with pvs > max
|
---|
| 1205 | if (0 && (pvs1 + pvs2 > mViewCellsManager->GetMaxPvsSize()))
|
---|
| 1206 | {
|
---|
| 1207 | return 1e20f;
|
---|
| 1208 | }
|
---|
| 1209 |
|
---|
| 1210 | float p1, p2;
|
---|
| 1211 |
|
---|
| 1212 | if (mUseAreaForPvs)
|
---|
| 1213 | {
|
---|
| 1214 | p1 = vc1->GetArea() - leaf->GetArea();
|
---|
| 1215 | p2 = vc2->GetArea() + leaf->GetArea();
|
---|
| 1216 | }
|
---|
| 1217 | else
|
---|
| 1218 | {
|
---|
| 1219 | p1 = vc1->GetVolume() - leaf->GetVolume();
|
---|
| 1220 | p2 = vc2->GetVolume() + leaf->GetVolume();
|
---|
| 1221 | }
|
---|
| 1222 |
|
---|
| 1223 | const float renderCost1 = pvsPenalty1 * p1;
|
---|
| 1224 | const float renderCost2 = pvsPenalty2 * p2;
|
---|
| 1225 |
|
---|
| 1226 | float dev1, dev2;
|
---|
| 1227 |
|
---|
| 1228 | if (1)
|
---|
| 1229 | {
|
---|
| 1230 | dev1 = fabs(mAvgRenderCost - pvsPenalty1);
|
---|
| 1231 | dev2 = fabs(mAvgRenderCost - pvsPenalty2);
|
---|
| 1232 | }
|
---|
| 1233 | else
|
---|
| 1234 | {
|
---|
| 1235 | dev1 = fabs(mExpectedCost - renderCost1);
|
---|
| 1236 | dev2 = fabs(mExpectedCost - renderCost2);
|
---|
| 1237 | }
|
---|
| 1238 |
|
---|
| 1239 | return mRenderCostWeight * (renderCost1 + renderCost2) +
|
---|
[582] | 1240 | (1.0f - mRenderCostWeight) * (dev1 + dev2) / (float)mNumActiveViewCells;
|
---|
[580] | 1241 | }
|
---|
| 1242 |
|
---|
| 1243 |
|
---|
| 1244 | void ViewCellsTree::ShuffleLeaf(ViewCell *leaf,
|
---|
[586] | 1245 | ViewCellInterior *vc1,
|
---|
| 1246 | ViewCellInterior *vc2) const
|
---|
[580] | 1247 | {
|
---|
| 1248 | // compute new pvs and area
|
---|
[586] | 1249 | // TODO change
|
---|
[580] | 1250 | vc1->GetPvs().SubtractPvs(leaf->GetPvs());
|
---|
| 1251 | vc2->GetPvs().AddPvs(leaf->GetPvs());
|
---|
| 1252 |
|
---|
| 1253 | if (mUseAreaForPvs)
|
---|
| 1254 | {
|
---|
| 1255 | vc1->SetArea(vc1->GetArea() - leaf->GetArea());
|
---|
| 1256 | vc2->SetArea(vc2->GetArea() + leaf->GetArea());
|
---|
| 1257 | }
|
---|
| 1258 | else
|
---|
| 1259 | {
|
---|
| 1260 | vc1->SetVolume(vc1->GetVolume() - leaf->GetVolume());
|
---|
| 1261 | vc2->SetVolume(vc2->GetVolume() + leaf->GetVolume());
|
---|
| 1262 | }
|
---|
| 1263 |
|
---|
[586] | 1264 |
|
---|
| 1265 | ViewCellInterior *p = dynamic_cast<ViewCellInterior *>(leaf->GetParent());
|
---|
[580] | 1266 |
|
---|
[586] | 1267 | p->RemoveChildLink(leaf);
|
---|
| 1268 | vc2->SetupChildLink(leaf);
|
---|
[580] | 1269 | }
|
---|
| 1270 |
|
---|
| 1271 |
|
---|
[586] | 1272 | bool ViewCellsTree::ShuffleLeaves(MergeCandidate &mc) const
|
---|
[580] | 1273 | {
|
---|
| 1274 | float cost1, cost2;
|
---|
| 1275 |
|
---|
[586] | 1276 | ViewCellInterior *vc1 = dynamic_cast<ViewCellInterior *>(mc.GetLeftViewCell());
|
---|
| 1277 | ViewCellInterior *vc2 = dynamic_cast<ViewCellInterior *>(mc.GetRightViewCell());
|
---|
| 1278 |
|
---|
| 1279 | ViewCell *leaf1 = mc.GetInitialLeftViewCell();
|
---|
| 1280 | ViewCell *leaf2 = mc.GetInitialRightViewCell();
|
---|
| 1281 |
|
---|
[580] | 1282 | //-- first test if shuffling would decrease cost
|
---|
[586] | 1283 | cost1 = GetCostHeuristics(vc1);
|
---|
| 1284 | cost2 = GetCostHeuristics(vc2);
|
---|
[580] | 1285 |
|
---|
| 1286 | const float oldCost = cost1 + cost2;
|
---|
| 1287 |
|
---|
| 1288 | float shuffledCost1 = Limits::Infinity;
|
---|
| 1289 | float shuffledCost2 = Limits::Infinity;
|
---|
| 1290 |
|
---|
[586] | 1291 | if (leaf1)
|
---|
| 1292 | shuffledCost1 = EvalShuffleCost(leaf1, vc1, vc2);
|
---|
| 1293 | if (leaf2)
|
---|
| 1294 | shuffledCost2 = EvalShuffleCost(leaf2, vc2, vc1);
|
---|
[580] | 1295 |
|
---|
| 1296 | // if cost of shuffle is less than old cost => shuffle
|
---|
| 1297 | if ((oldCost <= shuffledCost1) && (oldCost <= shuffledCost2))
|
---|
| 1298 | return false;
|
---|
| 1299 |
|
---|
| 1300 | if (shuffledCost1 < shuffledCost2)
|
---|
| 1301 | {
|
---|
[586] | 1302 | if (leaf1)
|
---|
| 1303 | ShuffleLeaf(leaf1, vc1, vc2);
|
---|
| 1304 | mc.mInitialLeftViewCell = NULL;
|
---|
[580] | 1305 | }
|
---|
| 1306 | else
|
---|
| 1307 | {
|
---|
[586] | 1308 | if (leaf2)
|
---|
| 1309 | ShuffleLeaf(leaf2, vc2, vc1);
|
---|
| 1310 | mc.mInitialRightViewCell = NULL;
|
---|
[580] | 1311 | }
|
---|
[586] | 1312 |
|
---|
[580] | 1313 | return true;
|
---|
| 1314 | }
|
---|
| 1315 |
|
---|
| 1316 |
|
---|
| 1317 | float ViewCellsTree::GetVariance(ViewCell *vc) const
|
---|
| 1318 | {
|
---|
| 1319 | const int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
| 1320 | const int lower = mViewCellsManager->GetMinPvsSize();
|
---|
| 1321 |
|
---|
| 1322 | if (1)
|
---|
| 1323 | {
|
---|
[752] | 1324 | const float penalty =
|
---|
| 1325 | EvalPvsPenalty(vc->GetPvs().GetSize(), lower, upper);
|
---|
[1141] | 1326 |
|
---|
[752] | 1327 | return (mAvgRenderCost - penalty) * (mAvgRenderCost - penalty) /
|
---|
| 1328 | (float)mNumActiveViewCells;
|
---|
[580] | 1329 | }
|
---|
| 1330 |
|
---|
| 1331 | const float leafCost = GetRenderCost(vc);
|
---|
| 1332 | return (mExpectedCost - leafCost) * (mExpectedCost - leafCost);
|
---|
| 1333 | }
|
---|
| 1334 |
|
---|
| 1335 |
|
---|
| 1336 | float ViewCellsTree::GetDeviation(ViewCell *vc) const
|
---|
| 1337 | {
|
---|
| 1338 | const int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
| 1339 | const int lower = mViewCellsManager->GetMinPvsSize();
|
---|
| 1340 |
|
---|
| 1341 | if (1)
|
---|
| 1342 | {
|
---|
[1168] | 1343 | const float penalty = EvalPvsPenalty(vc->GetPvs().CountObjectsInPvs(), lower, upper);
|
---|
[582] | 1344 | return fabs(mAvgRenderCost - penalty) / (float)mNumActiveViewCells;
|
---|
[580] | 1345 | }
|
---|
| 1346 |
|
---|
| 1347 | const float renderCost = GetRenderCost(vc);
|
---|
| 1348 | return fabs(mExpectedCost - renderCost);
|
---|
| 1349 | }
|
---|
| 1350 |
|
---|
| 1351 |
|
---|
| 1352 | float ViewCellsTree::GetRenderCost(ViewCell *vc) const
|
---|
| 1353 | {
|
---|
| 1354 | if (mUseAreaForPvs)
|
---|
[1141] | 1355 | {
|
---|
[1168] | 1356 | return vc->GetPvs().CountObjectsInPvs() * vc->GetArea();
|
---|
[1141] | 1357 | }
|
---|
[580] | 1358 |
|
---|
[1168] | 1359 | return vc->GetPvs().CountObjectsInPvs() * vc->GetVolume();
|
---|
[580] | 1360 | }
|
---|
| 1361 |
|
---|
| 1362 |
|
---|
| 1363 | float ViewCellsTree::GetCostHeuristics(ViewCell *vc) const
|
---|
| 1364 | {
|
---|
| 1365 | return GetRenderCost(vc) * mRenderCostWeight +
|
---|
| 1366 | GetDeviation(vc) * (1.0f - mRenderCostWeight);
|
---|
| 1367 | }
|
---|
| 1368 |
|
---|
| 1369 |
|
---|
[582] | 1370 | bool ViewCellsTree::ValidateMergeCandidate(MergeCandidate &mc) const
|
---|
[580] | 1371 | {
|
---|
[752] | 1372 | // propagate up so we have only the active view cells
|
---|
[580] | 1373 | while (mc.mLeftViewCell->mParent)
|
---|
| 1374 | {
|
---|
| 1375 | mc.mLeftViewCell = mc.mLeftViewCell->mParent;
|
---|
| 1376 | }
|
---|
| 1377 |
|
---|
| 1378 | while (mc.mRightViewCell->mParent)
|
---|
| 1379 | {
|
---|
| 1380 | mc.mRightViewCell = mc.mRightViewCell->mParent;
|
---|
| 1381 | }
|
---|
| 1382 |
|
---|
[752] | 1383 | // this view cell was already merged
|
---|
| 1384 | //return mc.mLeftViewCell && (mc.mLeftViewCell != mc.mRightViewCell);
|
---|
[582] | 1385 | return mc.mLeftViewCell != mc.mRightViewCell;
|
---|
[580] | 1386 | }
|
---|
| 1387 |
|
---|
| 1388 |
|
---|
| 1389 | void ViewCellsTree::EvalMergeCost(MergeCandidate &mc) const
|
---|
| 1390 | {
|
---|
[1586] | 1391 | ///////////////////
|
---|
[580] | 1392 | //-- compute pvs difference
|
---|
[1586] | 1393 |
|
---|
[752] | 1394 | int newPvs;
|
---|
[1586] | 1395 |
|
---|
[752] | 1396 | if (1) // not valid if not using const cost per object!!
|
---|
[1586] | 1397 | {
|
---|
[752] | 1398 | newPvs = ComputeMergedPvsSize(mc.mLeftViewCell->GetPvs(), mc.mRightViewCell->GetPvs());
|
---|
[1586] | 1399 | }
|
---|
[752] | 1400 | else
|
---|
[1586] | 1401 | {
|
---|
[752] | 1402 | newPvs = (int)ComputeMergedPvsCost(mc.mLeftViewCell->GetPvs(), mc.mRightViewCell->GetPvs());
|
---|
[1586] | 1403 | }
|
---|
[580] | 1404 |
|
---|
[1141] | 1405 | const float newPenalty = EvalPvsPenalty(newPvs,
|
---|
[729] | 1406 | mViewCellsManager->GetMinPvsSize(),
|
---|
| 1407 | mViewCellsManager->GetMaxPvsSize());
|
---|
| 1408 |
|
---|
[580] | 1409 | ViewCell *vc1 = mc.mLeftViewCell;
|
---|
| 1410 | ViewCell *vc2 = mc.mRightViewCell;
|
---|
| 1411 |
|
---|
| 1412 | //-- compute ratio of old cost
|
---|
[1586] | 1413 | //-- (i.e., added size of left and right view cell times pvs size)
|
---|
| 1414 | //-- to new rendering cost (i.e, size of merged view cell times pvs size)
|
---|
[580] | 1415 | const float oldCost = GetRenderCost(vc1) + GetRenderCost(vc2);
|
---|
| 1416 |
|
---|
| 1417 | const float newCost = mUseAreaForPvs ?
|
---|
| 1418 | (float)newPenalty * (vc1->GetArea() + vc2->GetArea()) :
|
---|
| 1419 | (float)newPenalty * (vc1->GetVolume() + vc2->GetVolume());
|
---|
| 1420 |
|
---|
| 1421 |
|
---|
| 1422 | // strong penalty if pvs size too large
|
---|
| 1423 | if (0 && (newPvs > mViewCellsManager->GetMaxPvsSize()))
|
---|
| 1424 | {
|
---|
| 1425 | mc.mRenderCost = 1e20f;
|
---|
| 1426 | }
|
---|
| 1427 | else
|
---|
| 1428 | {
|
---|
| 1429 | mc.mRenderCost = (newCost - oldCost) /
|
---|
| 1430 | mViewCellsManager->GetViewSpaceBox().GetVolume();
|
---|
| 1431 | }
|
---|
| 1432 |
|
---|
[1586] | 1433 | ///////////////////////////
|
---|
| 1434 | //-- merge cost also takes deviation into account
|
---|
[580] | 1435 |
|
---|
| 1436 | float newDev, oldDev;
|
---|
| 1437 |
|
---|
| 1438 | if (1)
|
---|
[582] | 1439 | newDev = fabs(mAvgRenderCost - newPenalty) / (float)mNumActiveViewCells;
|
---|
[580] | 1440 | else
|
---|
[582] | 1441 | newDev = fabs(mExpectedCost - newCost) / (float)mNumActiveViewCells;
|
---|
[580] | 1442 |
|
---|
| 1443 | oldDev = GetDeviation(vc1) + GetDeviation(vc2);
|
---|
| 1444 |
|
---|
| 1445 | // compute deviation increase
|
---|
| 1446 | mc.mDeviationIncr = newDev - oldDev;
|
---|
| 1447 |
|
---|
| 1448 | //Debug << "render cost: " << mc.mRenderCost * mRenderCostWeight << endl;
|
---|
| 1449 | //Debug << "standard deviation: " << mc.mDeviationIncr * mRenderCostWeight << endl;
|
---|
| 1450 | }
|
---|
| 1451 |
|
---|
[752] | 1452 |
|
---|
| 1453 | void ViewCellsTree::SetViewCellsStorage(int stype)
|
---|
[580] | 1454 | {
|
---|
[752] | 1455 | if (mViewCellsStorage == stype)
|
---|
| 1456 | return;
|
---|
| 1457 |
|
---|
| 1458 | // TODO
|
---|
| 1459 | switch (stype)
|
---|
[581] | 1460 | {
|
---|
[752] | 1461 | case COMPRESSED:
|
---|
[584] | 1462 | CompressViewCellsPvs(mRoot);
|
---|
[752] | 1463 | break;
|
---|
| 1464 | default:
|
---|
| 1465 | break;
|
---|
[584] | 1466 | }
|
---|
[752] | 1467 |
|
---|
| 1468 | mViewCellsStorage = stype;
|
---|
[584] | 1469 | }
|
---|
[580] | 1470 |
|
---|
[752] | 1471 |
|
---|
[584] | 1472 | void ViewCellsTree::CompressViewCellsPvs(ViewCell *root)
|
---|
| 1473 | {
|
---|
| 1474 | if (!root->IsLeaf())
|
---|
| 1475 | {
|
---|
| 1476 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(root);
|
---|
| 1477 |
|
---|
| 1478 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[585] | 1479 |
|
---|
[584] | 1480 | // compress child sets first
|
---|
| 1481 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
[581] | 1482 | {
|
---|
[584] | 1483 | CompressViewCellsPvs(*it);
|
---|
[581] | 1484 | }
|
---|
[584] | 1485 |
|
---|
[585] | 1486 | // compress root node
|
---|
[610] | 1487 | PullUpVisibility(interior);
|
---|
[581] | 1488 | }
|
---|
[580] | 1489 | }
|
---|
| 1490 |
|
---|
| 1491 |
|
---|
[1166] | 1492 | void ViewCellsTree::UpdateStats(ofstream &stats,
|
---|
| 1493 | const int pass,
|
---|
| 1494 | const int viewCells,
|
---|
| 1495 | const float renderCostDecrease,
|
---|
| 1496 | const float totalRenderCost,
|
---|
| 1497 | const int currentPvs,
|
---|
| 1498 | const float expectedCost,
|
---|
| 1499 | const float avgRenderCost,
|
---|
| 1500 | const float deviation,
|
---|
| 1501 | const int totalPvs,
|
---|
| 1502 | const int entriesInPvs,
|
---|
| 1503 | const int pvsSizeDecr,
|
---|
| 1504 | const float volume)
|
---|
| 1505 | {
|
---|
| 1506 | stats << "#Pass\n" << pass << endl
|
---|
| 1507 | << "#ViewCells\n" << viewCells << endl
|
---|
| 1508 | << "#RenderCostDecrease\n" << renderCostDecrease << endl // TODO
|
---|
| 1509 | << "#TotalRenderCost\n" << totalRenderCost << endl
|
---|
| 1510 | << "#CurrentPvs\n" << currentPvs << endl
|
---|
| 1511 | << "#ExpectedCost\n" << expectedCost << endl
|
---|
| 1512 | << "#AvgRenderCost\n" << avgRenderCost << endl
|
---|
| 1513 | << "#Deviation\n" << deviation << endl
|
---|
| 1514 | << "#TotalPvs\n" << totalPvs << endl
|
---|
| 1515 | << "#TotalEntriesInPvs\n" << entriesInPvs << endl
|
---|
| 1516 | << "#PvsSizeDecrease\n" << pvsSizeDecr << endl // TODO
|
---|
| 1517 | << "#Volume\n" << volume << endl
|
---|
| 1518 | << endl;
|
---|
| 1519 | }
|
---|
| 1520 |
|
---|
[1489] | 1521 |
|
---|
[660] | 1522 | void ViewCellsTree::ExportStats(const string &mergeStats)
|
---|
[650] | 1523 | {
|
---|
| 1524 | TraversalQueue tqueue;
|
---|
| 1525 |
|
---|
| 1526 | tqueue.push(mRoot);
|
---|
| 1527 | int numViewCells = 1;
|
---|
| 1528 |
|
---|
| 1529 | const AxisAlignedBox3 box = mViewCellsManager->GetViewSpaceBox();
|
---|
| 1530 | const float vol = box.GetVolume();
|
---|
| 1531 |
|
---|
[752] | 1532 | const int rootPvs = GetPvsSize(mRoot);
|
---|
[1161] | 1533 | const int rootEntries = GetPvsEntries(mRoot);
|
---|
[752] | 1534 |
|
---|
[1168] | 1535 | Debug << "******** Export stats **********" << endl;
|
---|
[1603] | 1536 |
|
---|
[651] | 1537 | float totalRenderCost, avgRenderCost, expectedCost;
|
---|
[650] | 1538 |
|
---|
| 1539 | float deviation = 0;
|
---|
[1166] | 1540 | int totalPvs = rootPvs;
|
---|
| 1541 | int entriesInPvs = rootEntries;
|
---|
| 1542 |
|
---|
[752] | 1543 | totalRenderCost = avgRenderCost = expectedCost = (float)rootPvs;
|
---|
[650] | 1544 |
|
---|
| 1545 | ofstream stats;
|
---|
[660] | 1546 | stats.open(mergeStats.c_str());
|
---|
[650] | 1547 |
|
---|
[1603] | 1548 | /////////////
|
---|
[752] | 1549 | //-- first view cell
|
---|
[1603] | 1550 |
|
---|
[1166] | 1551 | UpdateStats(stats,
|
---|
| 1552 | 0, numViewCells, 0, totalRenderCost,
|
---|
| 1553 | rootPvs, expectedCost, avgRenderCost, deviation,
|
---|
| 1554 | totalPvs, entriesInPvs, 0, mRoot->GetVolume());
|
---|
| 1555 |
|
---|
[650] | 1556 |
|
---|
[1161] | 1557 | //-- go through tree in the order of render cost decrease
|
---|
| 1558 | //-- which is the same order as the view cells were merged
|
---|
| 1559 | //-- or the reverse order of subdivision for subdivision-only
|
---|
| 1560 | //-- view cell hierarchies.
|
---|
[650] | 1561 |
|
---|
| 1562 | while (!tqueue.empty())
|
---|
| 1563 | {
|
---|
| 1564 | ViewCell *vc = tqueue.top();
|
---|
| 1565 | tqueue.pop();
|
---|
| 1566 |
|
---|
| 1567 | if (!vc->IsLeaf())
|
---|
| 1568 | {
|
---|
| 1569 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[1166] | 1570 |
|
---|
[752] | 1571 | const int parentPvs = GetPvsSize(interior);
|
---|
[1166] | 1572 | const int parentPvsEntries = GetPvsEntries(interior);
|
---|
| 1573 | const float parentCost = (float)parentPvs * interior->GetVolume();
|
---|
| 1574 |
|
---|
[650] | 1575 | float childCost = 0;
|
---|
| 1576 | int childPvs = 0;
|
---|
[1166] | 1577 | int childPvsEntries = 0;
|
---|
[650] | 1578 |
|
---|
| 1579 | -- numViewCells;
|
---|
| 1580 |
|
---|
| 1581 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[1179] | 1582 |
|
---|
[650] | 1583 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 1584 | {
|
---|
[1166] | 1585 | ViewCell *vc = *it;
|
---|
[1168] | 1586 |
|
---|
[1166] | 1587 | const int pvsSize = GetPvsSize(vc);
|
---|
| 1588 | const int pvsEntries = GetPvsEntries(vc);
|
---|
| 1589 |
|
---|
| 1590 | childCost += (float) pvsSize * vc->GetVolume();
|
---|
[752] | 1591 | childPvs += pvsSize;
|
---|
[1166] | 1592 | childPvsEntries += pvsEntries;
|
---|
[650] | 1593 |
|
---|
[1166] | 1594 | tqueue.push(vc);
|
---|
[650] | 1595 | ++ numViewCells;
|
---|
| 1596 | }
|
---|
| 1597 |
|
---|
[1603] | 1598 | // update stats for this view cell
|
---|
[650] | 1599 | const float costDecr = (parentCost - childCost) / vol;
|
---|
| 1600 |
|
---|
| 1601 | totalRenderCost -= costDecr;
|
---|
| 1602 | totalPvs += childPvs - parentPvs;
|
---|
[1166] | 1603 | entriesInPvs += childPvsEntries - parentPvsEntries;
|
---|
| 1604 |
|
---|
[650] | 1605 | expectedCost = totalRenderCost / (float)numViewCells;
|
---|
| 1606 | avgRenderCost = (float)totalPvs / (float)numViewCells;
|
---|
| 1607 |
|
---|
[1166] | 1608 | UpdateStats(stats,
|
---|
| 1609 | 0, numViewCells, costDecr, totalRenderCost,
|
---|
| 1610 | parentPvs, expectedCost, avgRenderCost, deviation,
|
---|
| 1611 | totalPvs, entriesInPvs, childPvs - parentPvs,
|
---|
| 1612 | vc->GetVolume());
|
---|
[650] | 1613 |
|
---|
| 1614 | }
|
---|
| 1615 | }
|
---|
| 1616 |
|
---|
| 1617 | stats.close();
|
---|
| 1618 | }
|
---|
| 1619 |
|
---|
| 1620 |
|
---|
| 1621 | void ViewCellsTree::SetRoot(ViewCell *root)
|
---|
| 1622 | {
|
---|
| 1623 | mRoot = root;
|
---|
| 1624 | }
|
---|
| 1625 |
|
---|
[660] | 1626 |
|
---|
[581] | 1627 | void ViewCellsTree::CollectBestViewCellSet(ViewCellContainer &viewCells,
|
---|
| 1628 | const int numViewCells)
|
---|
[580] | 1629 | {
|
---|
| 1630 | TraversalQueue tqueue;
|
---|
[581] | 1631 | tqueue.push(mRoot);
|
---|
[582] | 1632 |
|
---|
[580] | 1633 | while (!tqueue.empty())
|
---|
| 1634 | {
|
---|
| 1635 | ViewCell *vc = tqueue.top();
|
---|
[650] | 1636 | tqueue.pop();
|
---|
| 1637 |
|
---|
[582] | 1638 | // save the view cells if it is a leaf or if enough view cells have already been traversed
|
---|
| 1639 | // because of the priority queue, this will be the optimal set of v
|
---|
[650] | 1640 | if (vc->IsLeaf() || ((viewCells.size() + tqueue.size() + 1) >= numViewCells))
|
---|
[581] | 1641 | {
|
---|
| 1642 | viewCells.push_back(vc);
|
---|
| 1643 | }
|
---|
[582] | 1644 | else
|
---|
| 1645 | {
|
---|
[581] | 1646 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[580] | 1647 |
|
---|
[581] | 1648 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 1649 |
|
---|
| 1650 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 1651 | {
|
---|
| 1652 | tqueue.push(*it);
|
---|
| 1653 | }
|
---|
| 1654 | }
|
---|
[580] | 1655 | }
|
---|
| 1656 | }
|
---|
[581] | 1657 |
|
---|
[580] | 1658 |
|
---|
[610] | 1659 | void ViewCellsTree::PullUpVisibility(ViewCellInterior *interior)
|
---|
[581] | 1660 | {
|
---|
[584] | 1661 | Intersectable::NewMail((int)interior->mChildren.size());
|
---|
[580] | 1662 |
|
---|
[581] | 1663 | ViewCellContainer::const_iterator cit, cit_end = interior->mChildren.end();
|
---|
| 1664 |
|
---|
| 1665 | ObjectPvsMap::const_iterator oit;
|
---|
| 1666 |
|
---|
| 1667 | // mail all objects in the leaf sets
|
---|
[584] | 1668 | // we are interested in the objects which are present in all leaves
|
---|
| 1669 | // => count how often an object is part of a child set
|
---|
[581] | 1670 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
| 1671 | {
|
---|
| 1672 | ViewCell *vc = *cit;
|
---|
| 1673 |
|
---|
| 1674 | ObjectPvsMap::const_iterator oit_end = vc->GetPvs().mEntries.end();
|
---|
| 1675 |
|
---|
| 1676 | for (oit = vc->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
| 1677 | {
|
---|
[584] | 1678 | Intersectable *obj = (*oit).first;
|
---|
| 1679 | if ((cit == interior->mChildren.begin()) && !obj->Mailed())
|
---|
| 1680 | obj->Mail();
|
---|
[581] | 1681 |
|
---|
[584] | 1682 | int incm = obj->IncMail();
|
---|
[581] | 1683 | }
|
---|
| 1684 | }
|
---|
| 1685 |
|
---|
[1189] | 1686 | interior->GetPvs().Clear();
|
---|
[581] | 1687 |
|
---|
[584] | 1688 |
|
---|
[581] | 1689 | // only the objects which are present in all leaf pvs
|
---|
| 1690 | // should remain in the parent pvs
|
---|
[584] | 1691 | // these are the objects which have been mailed in all children
|
---|
[581] | 1692 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
| 1693 | {
|
---|
| 1694 | ViewCell *vc = *cit;
|
---|
| 1695 |
|
---|
| 1696 | ObjectPvsMap::const_iterator oit_end = vc->GetPvs().mEntries.end();
|
---|
| 1697 |
|
---|
| 1698 | for (oit = vc->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
[585] | 1699 | {
|
---|
[581] | 1700 | if ((*oit).first->Mailed((int)interior->mChildren.size()))
|
---|
| 1701 | {
|
---|
| 1702 | interior->GetPvs().AddSample((*oit).first, (*oit).second.mSumPdf);
|
---|
| 1703 | }
|
---|
| 1704 | }
|
---|
| 1705 | }
|
---|
| 1706 |
|
---|
[584] | 1707 |
|
---|
| 1708 | // delete all the objects from the leaf sets which were moved to parent pvs
|
---|
[581] | 1709 | ObjectPvsMap::const_iterator oit_end = interior->GetPvs().mEntries.end();
|
---|
| 1710 |
|
---|
| 1711 | for (oit = interior->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
| 1712 | {
|
---|
| 1713 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
| 1714 | {
|
---|
[584] | 1715 | if (!(*cit)->GetPvs().RemoveSample((*oit).first, Limits::Infinity))
|
---|
[1189] | 1716 | {
|
---|
[584] | 1717 | Debug << "should not come here!" << endl;
|
---|
[1189] | 1718 | }
|
---|
[581] | 1719 | }
|
---|
| 1720 | }
|
---|
| 1721 | }
|
---|
| 1722 |
|
---|
[1168] | 1723 |
|
---|
[1166] | 1724 | // TODO matt: implement this function for different storing methods
|
---|
[584] | 1725 | void ViewCellsTree::GetPvs(ViewCell *vc, ObjectPvs &pvs) const
|
---|
| 1726 | {
|
---|
[1161] | 1727 | // pvs is stored in each cell => just return pvs
|
---|
[752] | 1728 | if (mViewCellsStorage == PVS_IN_INTERIORS)
|
---|
[801] | 1729 | {
|
---|
[585] | 1730 | pvs = vc->GetPvs();
|
---|
[801] | 1731 | return;
|
---|
| 1732 | }
|
---|
[585] | 1733 |
|
---|
[1161] | 1734 |
|
---|
| 1735 | //-- pvs is not stored with the interiors => reconstruct
|
---|
[801] | 1736 | Intersectable::NewMail();
|
---|
| 1737 |
|
---|
[585] | 1738 | int pvsSize = 0;
|
---|
| 1739 | ViewCell *root = vc;
|
---|
| 1740 |
|
---|
[883] | 1741 | // add pvs from this view cell to root
|
---|
[585] | 1742 | while (root->GetParent())
|
---|
[584] | 1743 | {
|
---|
[585] | 1744 | root = root->GetParent();
|
---|
| 1745 | pvs.AddPvs(root->GetPvs());
|
---|
| 1746 | }
|
---|
[584] | 1747 |
|
---|
[883] | 1748 | // add pvs from leaves
|
---|
[585] | 1749 | stack<ViewCell *> tstack;
|
---|
| 1750 | tstack.push(vc);
|
---|
[584] | 1751 |
|
---|
[585] | 1752 | while (!tstack.empty())
|
---|
| 1753 | {
|
---|
| 1754 | vc = tstack.top();
|
---|
| 1755 | tstack.pop();
|
---|
| 1756 |
|
---|
[1161] | 1757 | // add newly found pvs to merged pvs
|
---|
[585] | 1758 | pvs.AddPvs(vc->GetPvs());
|
---|
| 1759 |
|
---|
[1161] | 1760 | if (!vc->IsLeaf()) // interior cells: go down to leaf level
|
---|
[584] | 1761 | {
|
---|
| 1762 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[585] | 1763 |
|
---|
[584] | 1764 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 1765 |
|
---|
| 1766 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 1767 | {
|
---|
[585] | 1768 | tstack.push(*it);
|
---|
| 1769 | }
|
---|
[584] | 1770 | }
|
---|
| 1771 | }
|
---|
| 1772 | }
|
---|
| 1773 |
|
---|
| 1774 |
|
---|
[1166] | 1775 | int ViewCellsTree::GetPvsSizeForLeafStorage(ViewCell *vc) const
|
---|
[584] | 1776 | {
|
---|
[1166] | 1777 | // pvs is always stored directly in leaves
|
---|
| 1778 | if (vc->IsLeaf())
|
---|
| 1779 | {
|
---|
[1168] | 1780 | return vc->GetPvs().CountObjectsInPvs();
|
---|
[1166] | 1781 | }
|
---|
[1168] | 1782 |
|
---|
| 1783 | // interior nodes: pvs is either stored as a scalar or
|
---|
| 1784 | // has to be reconstructed from the leaves
|
---|
| 1785 | // the stored pvs size is the valid pvs size => just return scalar
|
---|
| 1786 | if (vc->mPvsSizeValid)
|
---|
[1166] | 1787 | {
|
---|
[1168] | 1788 | return vc->mPvsSize;
|
---|
| 1789 | }
|
---|
| 1790 |
|
---|
| 1791 | // if no valid pvs size stored as a scalar =>
|
---|
| 1792 | // compute current pvs size of interior from it's leaf nodes
|
---|
| 1793 | ViewCellContainer leaves;
|
---|
| 1794 | CollectLeaves(vc, leaves);
|
---|
[1121] | 1795 |
|
---|
[1168] | 1796 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
[1166] | 1797 |
|
---|
[1168] | 1798 | Intersectable::NewMail();
|
---|
| 1799 | ObjectPvs newPvs;
|
---|
[1166] | 1800 |
|
---|
[1586] | 1801 | // sum up uniquely found intersectables
|
---|
[1168] | 1802 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
| 1803 | {
|
---|
| 1804 | ObjectPvsMap::iterator oit, oit_end = (*it)->GetPvs().mEntries.end();
|
---|
| 1805 |
|
---|
| 1806 | for (oit = (*it)->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
[1166] | 1807 | {
|
---|
[1168] | 1808 | Intersectable *intersect = (*oit).first;
|
---|
| 1809 |
|
---|
| 1810 | if (!intersect->Mailed())
|
---|
| 1811 | {
|
---|
| 1812 | intersect->Mail();
|
---|
| 1813 | newPvs.AddSample(intersect, (*oit).second.mSumPdf);
|
---|
| 1814 | }
|
---|
[1166] | 1815 | }
|
---|
| 1816 | }
|
---|
| 1817 |
|
---|
[1168] | 1818 | return newPvs.CountObjectsInPvs();
|
---|
[1166] | 1819 | }
|
---|
| 1820 |
|
---|
| 1821 |
|
---|
| 1822 | int ViewCellsTree::GetEntriesInPvsForLeafStorage(ViewCell *vc) const
|
---|
| 1823 | {
|
---|
| 1824 | // pvs is always stored directly in leaves
|
---|
| 1825 | if (vc->IsLeaf())
|
---|
[752] | 1826 | {
|
---|
[1168] | 1827 | return vc->GetPvs().GetSize();
|
---|
[1166] | 1828 | }
|
---|
[1168] | 1829 |
|
---|
| 1830 | // interior node
|
---|
| 1831 |
|
---|
| 1832 | // interior nodes: pvs is either stored as a scalar or
|
---|
| 1833 | // has to be reconstructed from the leaves
|
---|
| 1834 |
|
---|
| 1835 | // the stored pvs size is the valid pvs size => just return scalar
|
---|
| 1836 | if (vc->mPvsSizeValid)
|
---|
[1166] | 1837 | {
|
---|
[1168] | 1838 | return vc->mEntriesInPvs;
|
---|
| 1839 | }
|
---|
| 1840 |
|
---|
| 1841 | int pvsSize = 0;
|
---|
[1161] | 1842 |
|
---|
[1168] | 1843 | // if no valid pvs size stored as a scalar =>
|
---|
| 1844 | // compute current pvs size of interior from it's leaf nodes
|
---|
| 1845 | ViewCellContainer leaves;
|
---|
| 1846 | CollectLeaves(vc, leaves);
|
---|
[1161] | 1847 |
|
---|
[1168] | 1848 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
| 1849 | Intersectable::NewMail();
|
---|
[1161] | 1850 |
|
---|
[1168] | 1851 | // sum different intersectables
|
---|
| 1852 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
| 1853 | {
|
---|
| 1854 | ObjectPvsMap::iterator oit, oit_end = (*it)->GetPvs().mEntries.end();
|
---|
[1161] | 1855 |
|
---|
[1168] | 1856 | for (oit = (*it)->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
[1166] | 1857 | {
|
---|
[1168] | 1858 | Intersectable *intersect = (*oit).first;
|
---|
| 1859 |
|
---|
| 1860 | if (!intersect->Mailed())
|
---|
| 1861 | {
|
---|
| 1862 | intersect->Mail();
|
---|
| 1863 | ++ pvsSize;
|
---|
| 1864 | }
|
---|
[1166] | 1865 | }
|
---|
| 1866 | }
|
---|
[1161] | 1867 |
|
---|
[1166] | 1868 | return pvsSize;
|
---|
| 1869 | }
|
---|
[1161] | 1870 |
|
---|
| 1871 |
|
---|
[1166] | 1872 | int ViewCellsTree::GetPvsSizeForCompressedStorage(ViewCell *vc) const
|
---|
| 1873 | {
|
---|
| 1874 | int pvsSize = 0;
|
---|
| 1875 |
|
---|
[1545] | 1876 | /////////////
|
---|
[1166] | 1877 | //-- compressed pvs
|
---|
| 1878 |
|
---|
| 1879 | // the stored pvs size is the valid pvs size => just return scalar
|
---|
| 1880 | if (vc->mPvsSizeValid)
|
---|
| 1881 | {
|
---|
| 1882 | pvsSize = vc->mPvsSize;
|
---|
| 1883 | }
|
---|
| 1884 |
|
---|
| 1885 | // if no pvs size stored, compute new one
|
---|
| 1886 | ViewCell *root = vc;
|
---|
| 1887 |
|
---|
| 1888 | // also add pvs from this view cell to root
|
---|
| 1889 | while (root->GetParent())
|
---|
| 1890 | {
|
---|
| 1891 | root = root->GetParent();
|
---|
| 1892 |
|
---|
| 1893 | // matt: bug! must evaluate kd pvss also
|
---|
[1586] | 1894 | pvsSize += CountPvsContribution(root);
|
---|
[1166] | 1895 | }
|
---|
| 1896 |
|
---|
| 1897 | stack<ViewCell *> tstack;
|
---|
| 1898 | tstack.push(vc);
|
---|
| 1899 |
|
---|
| 1900 | while (!tstack.empty())
|
---|
| 1901 | {
|
---|
| 1902 | vc = tstack.top();
|
---|
| 1903 | tstack.pop();
|
---|
| 1904 | // matt: bug! must evaluate kd pvss also
|
---|
[1586] | 1905 | pvsSize += CountPvsContribution(vc);
|
---|
[1166] | 1906 |
|
---|
| 1907 | if (!vc->IsLeaf())
|
---|
[1161] | 1908 | {
|
---|
[1166] | 1909 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[1161] | 1910 |
|
---|
[1166] | 1911 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 1912 |
|
---|
| 1913 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
[752] | 1914 | {
|
---|
[1166] | 1915 | tstack.push(*it);
|
---|
| 1916 | }
|
---|
| 1917 | }
|
---|
| 1918 | }
|
---|
[1161] | 1919 |
|
---|
[1166] | 1920 | return pvsSize;
|
---|
| 1921 | }
|
---|
| 1922 |
|
---|
| 1923 |
|
---|
| 1924 | int ViewCellsTree::GetEntriesInPvsForCompressedStorage(ViewCell *vc) const
|
---|
| 1925 | {
|
---|
| 1926 | int pvsSize = 0;
|
---|
| 1927 |
|
---|
[1586] | 1928 | /////////////////
|
---|
[1166] | 1929 | //-- compressed pvs
|
---|
| 1930 |
|
---|
| 1931 | // the stored pvs size is the valid pvs size => just return scalar
|
---|
| 1932 | if (vc->mPvsSizeValid)
|
---|
| 1933 | {
|
---|
| 1934 | pvsSize = vc->mEntriesInPvs;
|
---|
| 1935 | }
|
---|
| 1936 |
|
---|
| 1937 | // if no pvs size stored, compute new one
|
---|
| 1938 | ViewCell *root = vc;
|
---|
[752] | 1939 |
|
---|
[1166] | 1940 | // also add pvs from this view cell to root
|
---|
| 1941 | while (root->GetParent())
|
---|
| 1942 | {
|
---|
| 1943 | root = root->GetParent();
|
---|
| 1944 | // count the pvs entries different from the already found ones
|
---|
[1586] | 1945 | pvsSize += CountPvsContribution(root);
|
---|
[1166] | 1946 | }
|
---|
[585] | 1947 |
|
---|
[1166] | 1948 | stack<ViewCell *> tstack;
|
---|
| 1949 | tstack.push(vc);
|
---|
[719] | 1950 |
|
---|
[1166] | 1951 | while (!tstack.empty())
|
---|
| 1952 | {
|
---|
| 1953 | vc = tstack.top();
|
---|
| 1954 | tstack.pop();
|
---|
[1161] | 1955 |
|
---|
[1166] | 1956 | // count the pvs entries different from the already found ones
|
---|
[1586] | 1957 | pvsSize += CountPvsContribution(vc);
|
---|
[752] | 1958 |
|
---|
[1166] | 1959 | if (!vc->IsLeaf())
|
---|
| 1960 | {
|
---|
| 1961 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[1161] | 1962 |
|
---|
[1166] | 1963 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[1161] | 1964 |
|
---|
[1166] | 1965 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 1966 | {
|
---|
| 1967 | tstack.push(*it);
|
---|
| 1968 | }
|
---|
| 1969 | }
|
---|
| 1970 | }
|
---|
| 1971 |
|
---|
| 1972 | return pvsSize;
|
---|
| 1973 | }
|
---|
| 1974 |
|
---|
| 1975 |
|
---|
| 1976 | int ViewCellsTree::GetPvsSize(ViewCell *vc) const
|
---|
| 1977 | {
|
---|
| 1978 | int pvsSize = 0;
|
---|
| 1979 | Intersectable::NewMail();
|
---|
| 1980 |
|
---|
| 1981 | ////////////////////////////////////////////////
|
---|
[1311] | 1982 | // for interiors, pvs can be stored using different methods
|
---|
[1166] | 1983 | //
|
---|
| 1984 |
|
---|
| 1985 | switch (mViewCellsStorage)
|
---|
| 1986 | {
|
---|
| 1987 | case PVS_IN_LEAVES: //-- store pvs only in leaves
|
---|
[1311] | 1988 | pvsSize = GetPvsSizeForLeafStorage(vc);
|
---|
| 1989 | break;
|
---|
[1166] | 1990 | case COMPRESSED:
|
---|
[1311] | 1991 | pvsSize = GetPvsSizeForCompressedStorage(vc);
|
---|
| 1992 | break;
|
---|
[1161] | 1993 | case PVS_IN_INTERIORS:
|
---|
| 1994 | default:
|
---|
| 1995 | // pvs is stored consistently in the tree up to the root
|
---|
| 1996 | // just return pvs size
|
---|
[1168] | 1997 | pvsSize = vc->GetPvs().CountObjectsInPvs();
|
---|
[1161] | 1998 | break;
|
---|
| 1999 | }
|
---|
| 2000 |
|
---|
| 2001 | return pvsSize;
|
---|
| 2002 | }
|
---|
| 2003 |
|
---|
| 2004 |
|
---|
| 2005 | int ViewCellsTree::GetPvsEntries(ViewCell *vc) const
|
---|
| 2006 | {
|
---|
| 2007 | int pvsSize = 0;
|
---|
| 2008 |
|
---|
| 2009 | Intersectable::NewMail();
|
---|
| 2010 |
|
---|
| 2011 | ////////////////////////////////////////////////
|
---|
| 2012 | // for interiors, pvs can be stored using different methods
|
---|
| 2013 |
|
---|
| 2014 | switch (mViewCellsStorage)
|
---|
| 2015 | {
|
---|
[1622] | 2016 | case PVS_IN_LEAVES:
|
---|
| 2017 | {
|
---|
| 2018 | //-- store pvs only in leaves
|
---|
[1166] | 2019 | pvsSize = GetEntriesInPvsForLeafStorage(vc);
|
---|
| 2020 | break;
|
---|
[752] | 2021 | }
|
---|
| 2022 | case COMPRESSED:
|
---|
| 2023 | {
|
---|
[1166] | 2024 | pvsSize = GetEntriesInPvsForCompressedStorage(vc);
|
---|
[752] | 2025 | break;
|
---|
| 2026 | }
|
---|
| 2027 | case PVS_IN_INTERIORS:
|
---|
[997] | 2028 | default:
|
---|
[1161] | 2029 | // pvs is stored consistently in the tree up to the root
|
---|
| 2030 | // just return pvs size
|
---|
| 2031 | pvsSize = vc->GetPvs().GetSize();
|
---|
| 2032 | break;
|
---|
[752] | 2033 | }
|
---|
[584] | 2034 |
|
---|
| 2035 | return pvsSize;
|
---|
| 2036 | }
|
---|
| 2037 |
|
---|
| 2038 |
|
---|
| 2039 | float ViewCellsTree::GetMemoryCost(ViewCell *vc) const
|
---|
| 2040 | {
|
---|
| 2041 | const float entrySize =
|
---|
[1189] | 2042 | sizeof(PvsData) + sizeof(Intersectable *);
|
---|
[584] | 2043 |
|
---|
[1586] | 2044 | return (float)CountStoredPvsEntries(vc) * entrySize;
|
---|
[584] | 2045 | }
|
---|
| 2046 |
|
---|
[1586] | 2047 | //#if HAS_TO_BE_REDONE
|
---|
| 2048 | int ViewCellsTree::CountStoredPvsEntries(ViewCell *root) const
|
---|
[584] | 2049 | {
|
---|
[1161] | 2050 | int pvsSize = root->GetPvs().GetSize();
|
---|
[584] | 2051 |
|
---|
[1161] | 2052 | // recursivly count leaves
|
---|
| 2053 | if (!root->IsLeaf())
|
---|
[584] | 2054 | {
|
---|
[1161] | 2055 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(root);
|
---|
[584] | 2056 |
|
---|
| 2057 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2058 |
|
---|
| 2059 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2060 | {
|
---|
[1586] | 2061 | pvsSize += CountStoredPvsEntries(*it);
|
---|
[584] | 2062 | }
|
---|
| 2063 | }
|
---|
| 2064 |
|
---|
| 2065 | return pvsSize;
|
---|
| 2066 | }
|
---|
[1586] | 2067 | //#endif
|
---|
[584] | 2068 |
|
---|
[752] | 2069 | int ViewCellsTree::ViewCellsStorage() const
|
---|
[584] | 2070 | {
|
---|
[752] | 2071 | return mViewCellsStorage;
|
---|
[584] | 2072 | }
|
---|
| 2073 |
|
---|
| 2074 |
|
---|
[881] | 2075 | ViewCell *ViewCellsTree::GetActiveViewCell(ViewCellLeaf *vc) const
|
---|
[590] | 2076 | {
|
---|
[881] | 2077 | return vc->GetActiveViewCell();
|
---|
[590] | 2078 | }
|
---|
| 2079 |
|
---|
| 2080 |
|
---|
[651] | 2081 | void ViewCellsTree::PropagatePvs(ViewCell *vc)
|
---|
[664] | 2082 | {
|
---|
| 2083 | ViewCell *viewCell = vc;
|
---|
| 2084 |
|
---|
[660] | 2085 | // propagate pvs up
|
---|
[664] | 2086 | while (viewCell->GetParent())
|
---|
[610] | 2087 | {
|
---|
[664] | 2088 | viewCell->GetParent()->GetPvs().Merge(vc->GetPvs());
|
---|
| 2089 | viewCell = viewCell->GetParent();
|
---|
[610] | 2090 | }
|
---|
[651] | 2091 |
|
---|
| 2092 | if (vc->IsLeaf())
|
---|
| 2093 | return;
|
---|
| 2094 |
|
---|
[660] | 2095 | // propagate pvs to the leaves
|
---|
[651] | 2096 | stack<ViewCell *> tstack;
|
---|
| 2097 | tstack.push(vc);
|
---|
| 2098 |
|
---|
| 2099 | while (!tstack.empty())
|
---|
| 2100 | {
|
---|
| 2101 | ViewCell *viewCell = tstack.top();
|
---|
| 2102 | tstack.pop();
|
---|
| 2103 |
|
---|
| 2104 | if (viewCell != vc)
|
---|
| 2105 | {
|
---|
| 2106 | viewCell->GetPvs().Merge(vc->GetPvs());
|
---|
| 2107 | }
|
---|
| 2108 |
|
---|
| 2109 | if (!viewCell->IsLeaf())
|
---|
| 2110 | {
|
---|
| 2111 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
[664] | 2112 |
|
---|
[651] | 2113 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2114 |
|
---|
| 2115 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2116 | {
|
---|
| 2117 | tstack.push(*it);
|
---|
| 2118 | }
|
---|
| 2119 | }
|
---|
| 2120 | }
|
---|
[610] | 2121 | }
|
---|
[605] | 2122 |
|
---|
[610] | 2123 |
|
---|
[650] | 2124 | void ViewCellsTree::AssignRandomColors()
|
---|
[608] | 2125 | {
|
---|
[675] | 2126 | TraversalQueue tqueue;
|
---|
| 2127 |
|
---|
| 2128 | tqueue.push(mRoot);
|
---|
[708] | 2129 |
|
---|
[675] | 2130 | mRoot->SetColor(RandomColor(0.3f, 1.0f));
|
---|
| 2131 |
|
---|
| 2132 | while (!tqueue.empty())
|
---|
[608] | 2133 | {
|
---|
[675] | 2134 | ViewCell *vc = tqueue.top();
|
---|
| 2135 | tqueue.pop();
|
---|
[650] | 2136 |
|
---|
[675] | 2137 | // save the view cells if it is a leaf or if enough view cells have already been traversed
|
---|
| 2138 | // because of the priority queue, this will be the optimal set of v
|
---|
| 2139 | if (!vc->IsLeaf())
|
---|
| 2140 | {
|
---|
| 2141 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
| 2142 |
|
---|
| 2143 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2144 |
|
---|
| 2145 | float maxProbability = -1.0f;
|
---|
| 2146 |
|
---|
| 2147 | ViewCell *maxViewCell = NULL;
|
---|
| 2148 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2149 | {
|
---|
| 2150 | ViewCell *v = *it;
|
---|
| 2151 |
|
---|
| 2152 | // set random color
|
---|
| 2153 | v->SetColor(RandomColor(0.3f, 1.0f));
|
---|
| 2154 |
|
---|
| 2155 | if (v->GetVolume() > maxProbability)
|
---|
| 2156 | {
|
---|
| 2157 | maxProbability = v->GetVolume();
|
---|
| 2158 | maxViewCell = v;
|
---|
| 2159 | }
|
---|
| 2160 |
|
---|
| 2161 | if (maxViewCell)
|
---|
[708] | 2162 | {
|
---|
[675] | 2163 | maxViewCell->SetColor(vc->GetColor());
|
---|
[708] | 2164 | }
|
---|
[675] | 2165 |
|
---|
| 2166 | tqueue.push(v);
|
---|
| 2167 | }
|
---|
| 2168 | }
|
---|
[608] | 2169 | }
|
---|
| 2170 | }
|
---|
| 2171 |
|
---|
[675] | 2172 |
|
---|
[1161] | 2173 | /** Get costs resulting from each merge step.
|
---|
| 2174 | */
|
---|
[1603] | 2175 | void ViewCellsTree::GetCostFunction(vector<float> &costFunction)
|
---|
[608] | 2176 | {
|
---|
[1603] | 2177 | TraversalQueue tqueue;
|
---|
| 2178 | tqueue.push(mRoot);
|
---|
| 2179 |
|
---|
| 2180 | int numViewCells = 1;
|
---|
| 2181 |
|
---|
| 2182 | const float vol = mViewCellsManager->GetViewSpaceBox().GetVolume();
|
---|
| 2183 | const int rootPvs = GetPvsSize(mRoot);
|
---|
| 2184 |
|
---|
| 2185 | float totalRenderCost;
|
---|
| 2186 |
|
---|
| 2187 | int totalPvs = rootPvs;
|
---|
| 2188 | totalRenderCost = (float)rootPvs;
|
---|
| 2189 |
|
---|
| 2190 | costFunction.push_back(totalRenderCost);
|
---|
| 2191 |
|
---|
| 2192 | //-- go through tree in the order of render cost decrease
|
---|
| 2193 | //-- which is the same order as the view cells were merged
|
---|
| 2194 | //-- or the reverse order of subdivision for subdivision-only
|
---|
| 2195 | //-- view cell hierarchies.
|
---|
| 2196 |
|
---|
| 2197 | while (!tqueue.empty())
|
---|
[1161] | 2198 | {
|
---|
[1603] | 2199 | ViewCell *vc = tqueue.top();
|
---|
| 2200 | tqueue.pop();
|
---|
| 2201 |
|
---|
| 2202 | if (!vc->IsLeaf())
|
---|
| 2203 | {
|
---|
| 2204 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
| 2205 |
|
---|
| 2206 | const int parentPvs = GetPvsSize(interior);
|
---|
| 2207 | const float parentCost = (float)parentPvs * interior->GetVolume();
|
---|
| 2208 |
|
---|
| 2209 | -- numViewCells;
|
---|
| 2210 |
|
---|
| 2211 | float childCost = 0;
|
---|
| 2212 | int childPvs = 0;
|
---|
| 2213 |
|
---|
| 2214 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2215 |
|
---|
| 2216 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2217 | {
|
---|
| 2218 | ViewCell *vc = *it;
|
---|
| 2219 |
|
---|
| 2220 | const int pvsSize = GetPvsSize(vc);
|
---|
| 2221 |
|
---|
| 2222 | childCost += (float) pvsSize * vc->GetVolume();
|
---|
| 2223 | childPvs += pvsSize;
|
---|
| 2224 |
|
---|
| 2225 | tqueue.push(vc);
|
---|
| 2226 | ++ numViewCells;
|
---|
| 2227 | }
|
---|
| 2228 |
|
---|
| 2229 | // update stats for this view cell
|
---|
| 2230 | const float costDecr = (parentCost - childCost) / vol;
|
---|
| 2231 | totalRenderCost -= costDecr;
|
---|
| 2232 | const float expectedCost = totalRenderCost ;/// (float)numViewCells;
|
---|
[1585] | 2233 |
|
---|
[1603] | 2234 | costFunction.push_back(expectedCost);
|
---|
[1161] | 2235 | }
|
---|
[608] | 2236 | }
|
---|
| 2237 | }
|
---|
| 2238 |
|
---|
| 2239 |
|
---|
[1603] | 2240 | /** Get storage costs resulting from each merge step.
|
---|
| 2241 | */
|
---|
| 2242 | void ViewCellsTree::GetStorageFunction(vector<int> &storageFunction)
|
---|
| 2243 | {
|
---|
| 2244 | TraversalQueue tqueue;
|
---|
| 2245 | tqueue.push(mRoot);
|
---|
| 2246 |
|
---|
| 2247 | int numViewCells = 1;
|
---|
| 2248 |
|
---|
| 2249 | const float vol = mViewCellsManager->GetViewSpaceBox().GetVolume();
|
---|
| 2250 | const int rootEntries = GetPvsEntries(mRoot);
|
---|
| 2251 |
|
---|
| 2252 | int entriesInPvs = rootEntries;
|
---|
[1605] | 2253 | const int entryStorage = sizeof(PvsData) + sizeof(int); // one entry into the pvs
|
---|
[1603] | 2254 |
|
---|
| 2255 | storageFunction.push_back(rootEntries);
|
---|
| 2256 |
|
---|
| 2257 | ////////////
|
---|
| 2258 | //-- go through tree in the order of render cost decrease
|
---|
| 2259 | //-- which is the same order as the view cells were merged
|
---|
| 2260 | //-- or the reverse order of subdivision for subdivision-only
|
---|
| 2261 | //-- view cell hierarchies.
|
---|
| 2262 |
|
---|
| 2263 | while (!tqueue.empty())
|
---|
| 2264 | {
|
---|
| 2265 | ViewCell *vc = tqueue.top();
|
---|
| 2266 | tqueue.pop();
|
---|
| 2267 |
|
---|
| 2268 | if (!vc->IsLeaf())
|
---|
| 2269 | {
|
---|
| 2270 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
| 2271 |
|
---|
| 2272 | const int parentPvs = GetPvsSize(interior);
|
---|
| 2273 | const int parentPvsEntries = GetPvsEntries(interior);
|
---|
| 2274 | const float parentCost = (float)parentPvs * interior->GetVolume();
|
---|
| 2275 |
|
---|
| 2276 | float childCost = 0;
|
---|
| 2277 | int childPvs = 0;
|
---|
| 2278 | int childPvsEntries = 0;
|
---|
| 2279 |
|
---|
| 2280 | -- numViewCells;
|
---|
| 2281 |
|
---|
| 2282 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2283 |
|
---|
| 2284 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2285 | {
|
---|
| 2286 | ViewCell *vc = *it;
|
---|
| 2287 |
|
---|
| 2288 | //const int pvsSize = GetPvsSize(vc);
|
---|
| 2289 | const int pvsEntries = GetPvsEntries(vc);
|
---|
| 2290 |
|
---|
| 2291 | //childPvs += pvsSize;
|
---|
| 2292 | childPvsEntries += pvsEntries;
|
---|
| 2293 |
|
---|
| 2294 | tqueue.push(vc);
|
---|
| 2295 | ++ numViewCells;
|
---|
| 2296 | }
|
---|
| 2297 |
|
---|
| 2298 | // update stats for this view cell
|
---|
| 2299 | const float costDecr = (parentCost - childCost) / vol;
|
---|
| 2300 |
|
---|
| 2301 | //totalPvs += childPvs - parentPvs;
|
---|
| 2302 | entriesInPvs += childPvsEntries - parentPvsEntries;
|
---|
| 2303 |
|
---|
| 2304 | const int storageCost = entriesInPvs * entryStorage;
|
---|
| 2305 | storageFunction.push_back(storageCost);
|
---|
| 2306 | }
|
---|
| 2307 | }
|
---|
| 2308 | }
|
---|
| 2309 |
|
---|
| 2310 |
|
---|
| 2311 |
|
---|
[1161] | 2312 | void ViewCellsTree::UpdateViewCellsStats(ViewCell *vc,
|
---|
| 2313 | ViewCellsStatistics &vcStat)
|
---|
[605] | 2314 | {
|
---|
| 2315 | ++ vcStat.viewCells;
|
---|
| 2316 |
|
---|
| 2317 | const int pvsSize = GetPvsSize(vc);
|
---|
| 2318 |
|
---|
[613] | 2319 | vcStat.pvsSize += pvsSize;
|
---|
[605] | 2320 |
|
---|
| 2321 | if (pvsSize == 0)
|
---|
| 2322 | ++ vcStat.emptyPvs;
|
---|
| 2323 |
|
---|
| 2324 | if (pvsSize > vcStat.maxPvs)
|
---|
| 2325 | vcStat.maxPvs = pvsSize;
|
---|
| 2326 |
|
---|
| 2327 | if (pvsSize < vcStat.minPvs)
|
---|
| 2328 | vcStat.minPvs = pvsSize;
|
---|
| 2329 |
|
---|
| 2330 | if (!vc->GetValid())
|
---|
| 2331 | ++ vcStat.invalid;
|
---|
| 2332 | }
|
---|
| 2333 |
|
---|
[1161] | 2334 |
|
---|
[1201] | 2335 | bool ViewCellsTree::Export(OUT_STREAM &stream, const bool exportPvs)
|
---|
[610] | 2336 | {
|
---|
[840] | 2337 | // export recursivly all view cells from the root
|
---|
[844] | 2338 | ExportViewCell(mRoot, stream, exportPvs);
|
---|
[605] | 2339 |
|
---|
[610] | 2340 | return true;
|
---|
| 2341 | }
|
---|
| 2342 |
|
---|
| 2343 |
|
---|
[651] | 2344 | void ViewCellsTree::CreateUniqueViewCellsIds()
|
---|
[610] | 2345 | {
|
---|
[651] | 2346 | stack<ViewCell *> tstack;
|
---|
[610] | 2347 |
|
---|
[651] | 2348 | int currentId = 0;
|
---|
| 2349 |
|
---|
| 2350 | tstack.push(mRoot);
|
---|
| 2351 |
|
---|
| 2352 | while (!tstack.empty())
|
---|
[610] | 2353 | {
|
---|
[651] | 2354 | ViewCell *vc = tstack.top();
|
---|
| 2355 | tstack.pop();
|
---|
| 2356 |
|
---|
[1551] | 2357 | if (vc->GetId() != -1) // out of bounds
|
---|
| 2358 | vc->SetId(currentId ++);
|
---|
[651] | 2359 |
|
---|
| 2360 | if (!vc->IsLeaf())
|
---|
| 2361 | {
|
---|
| 2362 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
[1161] | 2363 |
|
---|
[651] | 2364 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2365 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2366 | {
|
---|
| 2367 | tstack.push(*it);
|
---|
| 2368 | }
|
---|
| 2369 | }
|
---|
[610] | 2370 | }
|
---|
[651] | 2371 | }
|
---|
[610] | 2372 |
|
---|
[1201] | 2373 |
|
---|
| 2374 | void ViewCellsTree::ExportPvs(ViewCell *viewCell, OUT_STREAM &stream)
|
---|
[651] | 2375 | {
|
---|
| 2376 | ObjectPvsMap::iterator it, it_end = viewCell->GetPvs().mEntries.end();
|
---|
| 2377 |
|
---|
[837] | 2378 | for (it = viewCell->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
| 2379 | {
|
---|
[1614] | 2380 | Intersectable *obj = (*it).first;
|
---|
| 2381 | // hack: just output full pvs
|
---|
| 2382 | if (obj->Type() == Intersectable::BVH_INTERSECTABLE)
|
---|
| 2383 | {
|
---|
| 2384 | ObjectContainer objects;
|
---|
| 2385 | BvhNode *node = dynamic_cast<BvhIntersectable *>(obj)->GetItem();
|
---|
| 2386 | node->CollectObjects(objects);
|
---|
| 2387 |
|
---|
| 2388 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
| 2389 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
| 2390 | {
|
---|
| 2391 | stream << (*oit)->GetId() << " ";
|
---|
| 2392 | }
|
---|
| 2393 | }
|
---|
| 2394 | else
|
---|
| 2395 | {
|
---|
| 2396 | stream << (*it).first->GetId() << " ";
|
---|
| 2397 | }
|
---|
[837] | 2398 | }
|
---|
| 2399 | }
|
---|
| 2400 |
|
---|
[1201] | 2401 |
|
---|
| 2402 | void ViewCellsTree::ExportViewCell(ViewCell *viewCell,
|
---|
| 2403 | OUT_STREAM &stream,
|
---|
| 2404 | const bool exportPvs)
|
---|
[837] | 2405 | {
|
---|
[610] | 2406 | if (viewCell->IsLeaf())
|
---|
| 2407 | {
|
---|
| 2408 | stream << "<Leaf ";
|
---|
| 2409 | stream << "id=\"" << viewCell->GetId() << "\" ";
|
---|
[881] | 2410 | stream << "active=\"" << dynamic_cast<ViewCellLeaf *>(viewCell)->GetActiveViewCell()->GetId() << "\" ";
|
---|
[610] | 2411 | stream << "mergecost=\"" << viewCell->GetMergeCost() << "\" ";
|
---|
| 2412 | stream << "pvs=\"";
|
---|
[837] | 2413 |
|
---|
[1551] | 2414 | //-- export pvs, i.e., the ids of the objects in the pvs
|
---|
[844] | 2415 | if (exportPvs)
|
---|
[955] | 2416 | {
|
---|
[840] | 2417 | ExportPvs(viewCell, stream);
|
---|
[955] | 2418 | }
|
---|
[651] | 2419 | stream << "\" />" << endl;
|
---|
[610] | 2420 | }
|
---|
| 2421 | else
|
---|
| 2422 | {
|
---|
| 2423 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
| 2424 |
|
---|
| 2425 | stream << "<Interior ";
|
---|
| 2426 | stream << "id=\"" << viewCell->GetId() << "\" ";
|
---|
| 2427 | stream << "mergecost=\"" << viewCell->GetMergeCost() << "\" ";
|
---|
[870] | 2428 | stream << "pvs=\"";
|
---|
| 2429 |
|
---|
[1551] | 2430 | // NOTE: do not export pvss for interior view cells because
|
---|
[870] | 2431 | // they can be completely reconstructed from the leaf pvss
|
---|
[1551] | 2432 | // on the other hand: we could store a tag with the compression scheme,
|
---|
| 2433 | // then some scheme were pvs is in the interiors could be used
|
---|
| 2434 | if (0) ExportPvs(viewCell, stream);
|
---|
[870] | 2435 |
|
---|
[651] | 2436 | stream << "\" >" << endl;
|
---|
| 2437 |
|
---|
[837] | 2438 | //-- recursivly export child view cells
|
---|
[610] | 2439 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
| 2440 |
|
---|
| 2441 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2442 | {
|
---|
[844] | 2443 | ExportViewCell(*it, stream, exportPvs);
|
---|
[610] | 2444 | }
|
---|
| 2445 |
|
---|
| 2446 | stream << "</Interior>" << endl;
|
---|
| 2447 | }
|
---|
| 2448 | }
|
---|
| 2449 |
|
---|
| 2450 |
|
---|
[660] | 2451 | void ViewCellsTree::ResetPvs()
|
---|
| 2452 | {
|
---|
| 2453 | stack<ViewCell *> tstack;
|
---|
[610] | 2454 |
|
---|
[660] | 2455 | tstack.push(mRoot);
|
---|
| 2456 |
|
---|
| 2457 | while (!tstack.empty())
|
---|
| 2458 | {
|
---|
| 2459 | ViewCell *vc = tstack.top();
|
---|
| 2460 | tstack.pop();
|
---|
| 2461 |
|
---|
[1189] | 2462 | vc->GetPvs().Clear();
|
---|
[666] | 2463 |
|
---|
[660] | 2464 | if (!vc->IsLeaf())
|
---|
| 2465 | {
|
---|
| 2466 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
| 2467 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
[666] | 2468 |
|
---|
[660] | 2469 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
| 2470 | {
|
---|
| 2471 | tstack.push(*it);
|
---|
| 2472 | }
|
---|
| 2473 | }
|
---|
| 2474 | }
|
---|
| 2475 | }
|
---|
| 2476 |
|
---|
| 2477 |
|
---|
[1551] | 2478 | void ViewCellsTree::SetViewCellsManager(ViewCellsManager *vcm)
|
---|
| 2479 | {
|
---|
| 2480 | mViewCellsManager = vcm;
|
---|
| 2481 | }
|
---|
| 2482 |
|
---|
| 2483 |
|
---|
[660] | 2484 | void ViewCellsTree::SetActiveSetToLeaves()
|
---|
| 2485 | {
|
---|
[752] | 2486 | // todo
|
---|
[660] | 2487 | }
|
---|
| 2488 |
|
---|
[1603] | 2489 |
|
---|
| 2490 |
|
---|
[580] | 2491 | /**************************************************************************/
|
---|
| 2492 | /* MergeCandidate implementation */
|
---|
| 2493 | /**************************************************************************/
|
---|
| 2494 |
|
---|
| 2495 |
|
---|
| 2496 | MergeCandidate::MergeCandidate(ViewCell *l, ViewCell *r):
|
---|
| 2497 | mRenderCost(0),
|
---|
| 2498 | mDeviationIncr(0),
|
---|
| 2499 | mLeftViewCell(l),
|
---|
[586] | 2500 | mRightViewCell(r),
|
---|
| 2501 | mInitialLeftViewCell(l),
|
---|
| 2502 | mInitialRightViewCell(r)
|
---|
[580] | 2503 | {
|
---|
| 2504 | //EvalMergeCost();
|
---|
| 2505 | }
|
---|
| 2506 |
|
---|
| 2507 |
|
---|
| 2508 | void MergeCandidate::SetRightViewCell(ViewCell *v)
|
---|
| 2509 | {
|
---|
| 2510 | mRightViewCell = v;
|
---|
| 2511 | }
|
---|
| 2512 |
|
---|
| 2513 |
|
---|
| 2514 | void MergeCandidate::SetLeftViewCell(ViewCell *v)
|
---|
| 2515 | {
|
---|
| 2516 | mLeftViewCell = v;
|
---|
| 2517 | }
|
---|
| 2518 |
|
---|
| 2519 |
|
---|
| 2520 | ViewCell *MergeCandidate::GetRightViewCell() const
|
---|
| 2521 | {
|
---|
| 2522 | return mRightViewCell;
|
---|
| 2523 | }
|
---|
| 2524 |
|
---|
| 2525 |
|
---|
| 2526 | ViewCell *MergeCandidate::GetLeftViewCell() const
|
---|
| 2527 | {
|
---|
| 2528 | return mLeftViewCell;
|
---|
| 2529 | }
|
---|
| 2530 |
|
---|
| 2531 |
|
---|
| 2532 | ViewCell *MergeCandidate::GetInitialRightViewCell() const
|
---|
| 2533 | {
|
---|
| 2534 | return mInitialRightViewCell;
|
---|
| 2535 | }
|
---|
| 2536 |
|
---|
| 2537 |
|
---|
| 2538 | ViewCell *MergeCandidate::GetInitialLeftViewCell() const
|
---|
| 2539 | {
|
---|
| 2540 | return mInitialLeftViewCell;
|
---|
| 2541 | }
|
---|
| 2542 |
|
---|
| 2543 |
|
---|
| 2544 | bool MergeCandidate::IsValid() const
|
---|
| 2545 | {
|
---|
[752] | 2546 | // if one has a parent, it was already merged
|
---|
[1002] | 2547 | return !(mLeftViewCell->GetParent() || mRightViewCell->GetParent());
|
---|
[580] | 2548 | }
|
---|
| 2549 |
|
---|
| 2550 |
|
---|
| 2551 | float MergeCandidate::GetRenderCost() const
|
---|
| 2552 | {
|
---|
| 2553 | return mRenderCost;
|
---|
| 2554 | }
|
---|
| 2555 |
|
---|
| 2556 |
|
---|
| 2557 | float MergeCandidate::GetDeviationIncr() const
|
---|
| 2558 | {
|
---|
| 2559 | return mDeviationIncr;
|
---|
| 2560 | }
|
---|
| 2561 |
|
---|
| 2562 |
|
---|
| 2563 | float MergeCandidate::GetMergeCost() const
|
---|
| 2564 | {
|
---|
| 2565 | return mRenderCost * sRenderCostWeight +
|
---|
| 2566 | mDeviationIncr * (1.0f - sRenderCostWeight);
|
---|
| 2567 | }
|
---|
| 2568 |
|
---|
| 2569 |
|
---|
[605] | 2570 |
|
---|
[580] | 2571 | /************************************************************************/
|
---|
| 2572 | /* MergeStatistics implementation */
|
---|
| 2573 | /************************************************************************/
|
---|
| 2574 |
|
---|
| 2575 |
|
---|
| 2576 | void MergeStatistics::Print(ostream &app) const
|
---|
| 2577 | {
|
---|
| 2578 | app << "===== Merge statistics ===============\n";
|
---|
| 2579 |
|
---|
| 2580 | app << setprecision(4);
|
---|
| 2581 |
|
---|
| 2582 | app << "#N_CTIME ( Overall time [s] )\n" << Time() << " \n";
|
---|
| 2583 |
|
---|
| 2584 | app << "#N_CCTIME ( Collect candidates time [s] )\n" << collectTime * 1e-3f << " \n";
|
---|
| 2585 |
|
---|
| 2586 | app << "#N_MTIME ( Merge time [s] )\n" << mergeTime * 1e-3f << " \n";
|
---|
| 2587 |
|
---|
| 2588 | app << "#N_NODES ( Number of nodes before merge )\n" << nodes << "\n";
|
---|
| 2589 |
|
---|
| 2590 | app << "#N_CANDIDATES ( Number of merge candidates )\n" << candidates << "\n";
|
---|
| 2591 |
|
---|
| 2592 | app << "#N_MERGEDSIBLINGS ( Number of merged siblings )\n" << siblings << "\n";
|
---|
| 2593 |
|
---|
| 2594 | app << "#OVERALLCOST ( overall merge cost )\n" << overallCost << "\n";
|
---|
| 2595 |
|
---|
| 2596 | app << "#N_MERGEDNODES ( Number of merged nodes )\n" << merged << "\n";
|
---|
| 2597 |
|
---|
| 2598 | app << "#MAX_TREEDIST ( Maximal distance in tree of merged leaves )\n" << maxTreeDist << "\n";
|
---|
| 2599 |
|
---|
| 2600 | app << "#AVG_TREEDIST ( Average distance in tree of merged leaves )\n" << AvgTreeDist() << "\n";
|
---|
| 2601 |
|
---|
| 2602 | app << "#EXPECTEDCOST ( expected render cost )\n" << expectedRenderCost << "\n";
|
---|
| 2603 |
|
---|
| 2604 | app << "#DEVIATION ( deviation )\n" << deviation << "\n";
|
---|
| 2605 |
|
---|
| 2606 | app << "#HEURISTICS ( heuristics )\n" << heuristics << "\n";
|
---|
| 2607 |
|
---|
| 2608 |
|
---|
| 2609 | app << "===== END OF BspTree statistics ==========\n";
|
---|
[608] | 2610 | }
|
---|
[860] | 2611 |
|
---|
[1199] | 2612 | }
|
---|