GrDrawTarget.cpp revision 01c8da1eef36570374f7e8764a38b25bf16ab7a6
1 2/* 3 * Copyright 2010 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11#include "GrDrawTarget.h" 12#include "GrContext.h" 13#include "GrDrawTargetCaps.h" 14#include "GrPath.h" 15#include "GrRenderTarget.h" 16#include "GrTexture.h" 17#include "GrVertexBuffer.h" 18 19#include "SkStrokeRec.h" 20 21//////////////////////////////////////////////////////////////////////////////// 22 23GrDrawTarget::DrawInfo& GrDrawTarget::DrawInfo::operator =(const DrawInfo& di) { 24 fPrimitiveType = di.fPrimitiveType; 25 fStartVertex = di.fStartVertex; 26 fStartIndex = di.fStartIndex; 27 fVertexCount = di.fVertexCount; 28 fIndexCount = di.fIndexCount; 29 30 fInstanceCount = di.fInstanceCount; 31 fVerticesPerInstance = di.fVerticesPerInstance; 32 fIndicesPerInstance = di.fIndicesPerInstance; 33 34 if (NULL != di.fDevBounds) { 35 SkASSERT(di.fDevBounds == &di.fDevBoundsStorage); 36 fDevBoundsStorage = di.fDevBoundsStorage; 37 fDevBounds = &fDevBoundsStorage; 38 } else { 39 fDevBounds = NULL; 40 } 41 42 fDstCopy = di.fDstCopy; 43 44 return *this; 45} 46 47#ifdef SK_DEBUG 48bool GrDrawTarget::DrawInfo::isInstanced() const { 49 if (fInstanceCount > 0) { 50 SkASSERT(0 == fIndexCount % fIndicesPerInstance); 51 SkASSERT(0 == fVertexCount % fVerticesPerInstance); 52 SkASSERT(fIndexCount / fIndicesPerInstance == fInstanceCount); 53 SkASSERT(fVertexCount / fVerticesPerInstance == fInstanceCount); 54 // there is no way to specify a non-zero start index to drawIndexedInstances(). 55 SkASSERT(0 == fStartIndex); 56 return true; 57 } else { 58 SkASSERT(!fVerticesPerInstance); 59 SkASSERT(!fIndicesPerInstance); 60 return false; 61 } 62} 63#endif 64 65void GrDrawTarget::DrawInfo::adjustInstanceCount(int instanceOffset) { 66 SkASSERT(this->isInstanced()); 67 SkASSERT(instanceOffset + fInstanceCount >= 0); 68 fInstanceCount += instanceOffset; 69 fVertexCount = fVerticesPerInstance * fInstanceCount; 70 fIndexCount = fIndicesPerInstance * fInstanceCount; 71} 72 73void GrDrawTarget::DrawInfo::adjustStartVertex(int vertexOffset) { 74 fStartVertex += vertexOffset; 75 SkASSERT(fStartVertex >= 0); 76} 77 78void GrDrawTarget::DrawInfo::adjustStartIndex(int indexOffset) { 79 SkASSERT(this->isIndexed()); 80 fStartIndex += indexOffset; 81 SkASSERT(fStartIndex >= 0); 82} 83 84//////////////////////////////////////////////////////////////////////////////// 85 86#define DEBUG_INVAL_BUFFER 0xdeadcafe 87#define DEBUG_INVAL_START_IDX -1 88 89GrDrawTarget::GrDrawTarget(GrContext* context) 90 : fClip(NULL) 91 , fContext(context) 92 , fGpuTraceMarkerCount(0) { 93 SkASSERT(NULL != context); 94 95 fDrawState = &fDefaultDrawState; 96 // We assume that fDrawState always owns a ref to the object it points at. 97 fDefaultDrawState.ref(); 98 GeometrySrcState& geoSrc = fGeoSrcStateStack.push_back(); 99#ifdef SK_DEBUG 100 geoSrc.fVertexCount = DEBUG_INVAL_START_IDX; 101 geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; 102 geoSrc.fIndexCount = DEBUG_INVAL_START_IDX; 103 geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; 104#endif 105 geoSrc.fVertexSrc = kNone_GeometrySrcType; 106 geoSrc.fIndexSrc = kNone_GeometrySrcType; 107} 108 109GrDrawTarget::~GrDrawTarget() { 110 SkASSERT(1 == fGeoSrcStateStack.count()); 111 SkDEBUGCODE(GeometrySrcState& geoSrc = fGeoSrcStateStack.back()); 112 SkASSERT(kNone_GeometrySrcType == geoSrc.fIndexSrc); 113 SkASSERT(kNone_GeometrySrcType == geoSrc.fVertexSrc); 114 fDrawState->unref(); 115} 116 117void GrDrawTarget::releaseGeometry() { 118 int popCnt = fGeoSrcStateStack.count() - 1; 119 while (popCnt) { 120 this->popGeometrySource(); 121 --popCnt; 122 } 123 this->resetVertexSource(); 124 this->resetIndexSource(); 125} 126 127void GrDrawTarget::setClip(const GrClipData* clip) { 128 clipWillBeSet(clip); 129 fClip = clip; 130} 131 132const GrClipData* GrDrawTarget::getClip() const { 133 return fClip; 134} 135 136void GrDrawTarget::setDrawState(GrDrawState* drawState) { 137 SkASSERT(NULL != fDrawState); 138 if (NULL == drawState) { 139 drawState = &fDefaultDrawState; 140 } 141 if (fDrawState != drawState) { 142 fDrawState->unref(); 143 drawState->ref(); 144 fDrawState = drawState; 145 } 146} 147 148bool GrDrawTarget::reserveVertexSpace(size_t vertexSize, 149 int vertexCount, 150 void** vertices) { 151 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 152 bool acquired = false; 153 if (vertexCount > 0) { 154 SkASSERT(NULL != vertices); 155 this->releasePreviousVertexSource(); 156 geoSrc.fVertexSrc = kNone_GeometrySrcType; 157 158 acquired = this->onReserveVertexSpace(vertexSize, 159 vertexCount, 160 vertices); 161 } 162 if (acquired) { 163 geoSrc.fVertexSrc = kReserved_GeometrySrcType; 164 geoSrc.fVertexCount = vertexCount; 165 geoSrc.fVertexSize = vertexSize; 166 } else if (NULL != vertices) { 167 *vertices = NULL; 168 } 169 return acquired; 170} 171 172bool GrDrawTarget::reserveIndexSpace(int indexCount, 173 void** indices) { 174 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 175 bool acquired = false; 176 if (indexCount > 0) { 177 SkASSERT(NULL != indices); 178 this->releasePreviousIndexSource(); 179 geoSrc.fIndexSrc = kNone_GeometrySrcType; 180 181 acquired = this->onReserveIndexSpace(indexCount, indices); 182 } 183 if (acquired) { 184 geoSrc.fIndexSrc = kReserved_GeometrySrcType; 185 geoSrc.fIndexCount = indexCount; 186 } else if (NULL != indices) { 187 *indices = NULL; 188 } 189 return acquired; 190 191} 192 193bool GrDrawTarget::reserveVertexAndIndexSpace(int vertexCount, 194 int indexCount, 195 void** vertices, 196 void** indices) { 197 size_t vertexSize = this->drawState()->getVertexSize(); 198 this->willReserveVertexAndIndexSpace(vertexCount, indexCount); 199 if (vertexCount) { 200 if (!this->reserveVertexSpace(vertexSize, vertexCount, vertices)) { 201 if (indexCount) { 202 this->resetIndexSource(); 203 } 204 return false; 205 } 206 } 207 if (indexCount) { 208 if (!this->reserveIndexSpace(indexCount, indices)) { 209 if (vertexCount) { 210 this->resetVertexSource(); 211 } 212 return false; 213 } 214 } 215 return true; 216} 217 218bool GrDrawTarget::geometryHints(int32_t* vertexCount, 219 int32_t* indexCount) const { 220 if (NULL != vertexCount) { 221 *vertexCount = -1; 222 } 223 if (NULL != indexCount) { 224 *indexCount = -1; 225 } 226 return false; 227} 228 229void GrDrawTarget::releasePreviousVertexSource() { 230 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 231 switch (geoSrc.fVertexSrc) { 232 case kNone_GeometrySrcType: 233 break; 234 case kArray_GeometrySrcType: 235 this->releaseVertexArray(); 236 break; 237 case kReserved_GeometrySrcType: 238 this->releaseReservedVertexSpace(); 239 break; 240 case kBuffer_GeometrySrcType: 241 geoSrc.fVertexBuffer->unref(); 242#ifdef SK_DEBUG 243 geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER; 244#endif 245 break; 246 default: 247 SkFAIL("Unknown Vertex Source Type."); 248 break; 249 } 250} 251 252void GrDrawTarget::releasePreviousIndexSource() { 253 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 254 switch (geoSrc.fIndexSrc) { 255 case kNone_GeometrySrcType: // these two don't require 256 break; 257 case kArray_GeometrySrcType: 258 this->releaseIndexArray(); 259 break; 260 case kReserved_GeometrySrcType: 261 this->releaseReservedIndexSpace(); 262 break; 263 case kBuffer_GeometrySrcType: 264 geoSrc.fIndexBuffer->unref(); 265#ifdef SK_DEBUG 266 geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER; 267#endif 268 break; 269 default: 270 SkFAIL("Unknown Index Source Type."); 271 break; 272 } 273} 274 275void GrDrawTarget::setVertexSourceToArray(const void* vertexArray, 276 int vertexCount) { 277 this->releasePreviousVertexSource(); 278 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 279 geoSrc.fVertexSrc = kArray_GeometrySrcType; 280 geoSrc.fVertexSize = this->drawState()->getVertexSize(); 281 geoSrc.fVertexCount = vertexCount; 282 this->onSetVertexSourceToArray(vertexArray, vertexCount); 283} 284 285void GrDrawTarget::setIndexSourceToArray(const void* indexArray, 286 int indexCount) { 287 this->releasePreviousIndexSource(); 288 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 289 geoSrc.fIndexSrc = kArray_GeometrySrcType; 290 geoSrc.fIndexCount = indexCount; 291 this->onSetIndexSourceToArray(indexArray, indexCount); 292} 293 294void GrDrawTarget::setVertexSourceToBuffer(const GrVertexBuffer* buffer) { 295 this->releasePreviousVertexSource(); 296 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 297 geoSrc.fVertexSrc = kBuffer_GeometrySrcType; 298 geoSrc.fVertexBuffer = buffer; 299 buffer->ref(); 300 geoSrc.fVertexSize = this->drawState()->getVertexSize(); 301} 302 303void GrDrawTarget::setIndexSourceToBuffer(const GrIndexBuffer* buffer) { 304 this->releasePreviousIndexSource(); 305 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 306 geoSrc.fIndexSrc = kBuffer_GeometrySrcType; 307 geoSrc.fIndexBuffer = buffer; 308 buffer->ref(); 309} 310 311void GrDrawTarget::resetVertexSource() { 312 this->releasePreviousVertexSource(); 313 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 314 geoSrc.fVertexSrc = kNone_GeometrySrcType; 315} 316 317void GrDrawTarget::resetIndexSource() { 318 this->releasePreviousIndexSource(); 319 GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 320 geoSrc.fIndexSrc = kNone_GeometrySrcType; 321} 322 323void GrDrawTarget::pushGeometrySource() { 324 this->geometrySourceWillPush(); 325 GeometrySrcState& newState = fGeoSrcStateStack.push_back(); 326 newState.fIndexSrc = kNone_GeometrySrcType; 327 newState.fVertexSrc = kNone_GeometrySrcType; 328#ifdef SK_DEBUG 329 newState.fVertexCount = ~0; 330 newState.fVertexBuffer = (GrVertexBuffer*)~0; 331 newState.fIndexCount = ~0; 332 newState.fIndexBuffer = (GrIndexBuffer*)~0; 333#endif 334} 335 336void GrDrawTarget::popGeometrySource() { 337 // if popping last element then pops are unbalanced with pushes 338 SkASSERT(fGeoSrcStateStack.count() > 1); 339 340 this->geometrySourceWillPop(fGeoSrcStateStack.fromBack(1)); 341 this->releasePreviousVertexSource(); 342 this->releasePreviousIndexSource(); 343 fGeoSrcStateStack.pop_back(); 344} 345 346//////////////////////////////////////////////////////////////////////////////// 347 348bool GrDrawTarget::checkDraw(GrPrimitiveType type, int startVertex, 349 int startIndex, int vertexCount, 350 int indexCount) const { 351 const GrDrawState& drawState = this->getDrawState(); 352#ifdef SK_DEBUG 353 const GeometrySrcState& geoSrc = fGeoSrcStateStack.back(); 354 int maxVertex = startVertex + vertexCount; 355 int maxValidVertex; 356 switch (geoSrc.fVertexSrc) { 357 case kNone_GeometrySrcType: 358 SkFAIL("Attempting to draw without vertex src."); 359 case kReserved_GeometrySrcType: // fallthrough 360 case kArray_GeometrySrcType: 361 maxValidVertex = geoSrc.fVertexCount; 362 break; 363 case kBuffer_GeometrySrcType: 364 maxValidVertex = static_cast<int>(geoSrc.fVertexBuffer->gpuMemorySize() / geoSrc.fVertexSize); 365 break; 366 } 367 if (maxVertex > maxValidVertex) { 368 SkFAIL("Drawing outside valid vertex range."); 369 } 370 if (indexCount > 0) { 371 int maxIndex = startIndex + indexCount; 372 int maxValidIndex; 373 switch (geoSrc.fIndexSrc) { 374 case kNone_GeometrySrcType: 375 SkFAIL("Attempting to draw indexed geom without index src."); 376 case kReserved_GeometrySrcType: // fallthrough 377 case kArray_GeometrySrcType: 378 maxValidIndex = geoSrc.fIndexCount; 379 break; 380 case kBuffer_GeometrySrcType: 381 maxValidIndex = static_cast<int>(geoSrc.fIndexBuffer->gpuMemorySize() / sizeof(uint16_t)); 382 break; 383 } 384 if (maxIndex > maxValidIndex) { 385 SkFAIL("Index reads outside valid index range."); 386 } 387 } 388 389 SkASSERT(NULL != drawState.getRenderTarget()); 390 391 for (int s = 0; s < drawState.numColorStages(); ++s) { 392 const GrEffect* effect = drawState.getColorStage(s).getEffect(); 393 int numTextures = effect->numTextures(); 394 for (int t = 0; t < numTextures; ++t) { 395 GrTexture* texture = effect->texture(t); 396 SkASSERT(texture->asRenderTarget() != drawState.getRenderTarget()); 397 } 398 } 399 for (int s = 0; s < drawState.numCoverageStages(); ++s) { 400 const GrEffect* effect = drawState.getCoverageStage(s).getEffect(); 401 int numTextures = effect->numTextures(); 402 for (int t = 0; t < numTextures; ++t) { 403 GrTexture* texture = effect->texture(t); 404 SkASSERT(texture->asRenderTarget() != drawState.getRenderTarget()); 405 } 406 } 407 408 SkASSERT(drawState.validateVertexAttribs()); 409#endif 410 if (NULL == drawState.getRenderTarget()) { 411 return false; 412 } 413 return true; 414} 415 416bool GrDrawTarget::setupDstReadIfNecessary(GrDeviceCoordTexture* dstCopy, const SkRect* drawBounds) { 417 if (this->caps()->dstReadInShaderSupport() || !this->getDrawState().willEffectReadDstColor()) { 418 return true; 419 } 420 GrRenderTarget* rt = this->drawState()->getRenderTarget(); 421 SkIRect copyRect; 422 const GrClipData* clip = this->getClip(); 423 clip->getConservativeBounds(rt, ©Rect); 424 425 if (NULL != drawBounds) { 426 SkIRect drawIBounds; 427 drawBounds->roundOut(&drawIBounds); 428 if (!copyRect.intersect(drawIBounds)) { 429#ifdef SK_DEBUG 430 GrPrintf("Missed an early reject. Bailing on draw from setupDstReadIfNecessary.\n"); 431#endif 432 return false; 433 } 434 } else { 435#ifdef SK_DEBUG 436 //GrPrintf("No dev bounds when dst copy is made.\n"); 437#endif 438 } 439 440 // MSAA consideration: When there is support for reading MSAA samples in the shader we could 441 // have per-sample dst values by making the copy multisampled. 442 GrTextureDesc desc; 443 this->initCopySurfaceDstDesc(rt, &desc); 444 desc.fWidth = copyRect.width(); 445 desc.fHeight = copyRect.height(); 446 447 GrAutoScratchTexture ast(fContext, desc, GrContext::kApprox_ScratchTexMatch); 448 449 if (NULL == ast.texture()) { 450 GrPrintf("Failed to create temporary copy of destination texture.\n"); 451 return false; 452 } 453 SkIPoint dstPoint = {0, 0}; 454 if (this->copySurface(ast.texture(), rt, copyRect, dstPoint)) { 455 dstCopy->setTexture(ast.texture()); 456 dstCopy->setOffset(copyRect.fLeft, copyRect.fTop); 457 return true; 458 } else { 459 return false; 460 } 461} 462 463void GrDrawTarget::drawIndexed(GrPrimitiveType type, 464 int startVertex, 465 int startIndex, 466 int vertexCount, 467 int indexCount, 468 const SkRect* devBounds) { 469 if (indexCount > 0 && this->checkDraw(type, startVertex, startIndex, vertexCount, indexCount)) { 470 DrawInfo info; 471 info.fPrimitiveType = type; 472 info.fStartVertex = startVertex; 473 info.fStartIndex = startIndex; 474 info.fVertexCount = vertexCount; 475 info.fIndexCount = indexCount; 476 477 info.fInstanceCount = 0; 478 info.fVerticesPerInstance = 0; 479 info.fIndicesPerInstance = 0; 480 481 if (NULL != devBounds) { 482 info.setDevBounds(*devBounds); 483 } 484 // TODO: We should continue with incorrect blending. 485 if (!this->setupDstReadIfNecessary(&info)) { 486 return; 487 } 488 this->onDraw(info); 489 } 490} 491 492void GrDrawTarget::drawNonIndexed(GrPrimitiveType type, 493 int startVertex, 494 int vertexCount, 495 const SkRect* devBounds) { 496 if (vertexCount > 0 && this->checkDraw(type, startVertex, -1, vertexCount, -1)) { 497 DrawInfo info; 498 info.fPrimitiveType = type; 499 info.fStartVertex = startVertex; 500 info.fStartIndex = 0; 501 info.fVertexCount = vertexCount; 502 info.fIndexCount = 0; 503 504 info.fInstanceCount = 0; 505 info.fVerticesPerInstance = 0; 506 info.fIndicesPerInstance = 0; 507 508 if (NULL != devBounds) { 509 info.setDevBounds(*devBounds); 510 } 511 // TODO: We should continue with incorrect blending. 512 if (!this->setupDstReadIfNecessary(&info)) { 513 return; 514 } 515 this->onDraw(info); 516 } 517} 518 519void GrDrawTarget::stencilPath(const GrPath* path, SkPath::FillType fill) { 520 // TODO: extract portions of checkDraw that are relevant to path stenciling. 521 SkASSERT(NULL != path); 522 SkASSERT(this->caps()->pathRenderingSupport()); 523 SkASSERT(!SkPath::IsInverseFillType(fill)); 524 this->onStencilPath(path, fill); 525} 526 527void GrDrawTarget::drawPath(const GrPath* path, SkPath::FillType fill) { 528 // TODO: extract portions of checkDraw that are relevant to path rendering. 529 SkASSERT(NULL != path); 530 SkASSERT(this->caps()->pathRenderingSupport()); 531 const GrDrawState* drawState = &getDrawState(); 532 533 SkRect devBounds; 534 if (SkPath::IsInverseFillType(fill)) { 535 devBounds = SkRect::MakeWH(SkIntToScalar(drawState->getRenderTarget()->width()), 536 SkIntToScalar(drawState->getRenderTarget()->height())); 537 } else { 538 devBounds = path->getBounds(); 539 } 540 SkMatrix viewM = drawState->getViewMatrix(); 541 viewM.mapRect(&devBounds); 542 543 GrDeviceCoordTexture dstCopy; 544 if (!this->setupDstReadIfNecessary(&dstCopy, &devBounds)) { 545 return; 546 } 547 548 this->onDrawPath(path, fill, dstCopy.texture() ? &dstCopy : NULL); 549} 550 551void GrDrawTarget::drawPaths(const GrPathRange* pathRange, 552 const uint32_t indices[], int count, 553 const float transforms[], PathTransformType transformsType, 554 SkPath::FillType fill) { 555 SkASSERT(this->caps()->pathRenderingSupport()); 556 SkASSERT(NULL != pathRange); 557 SkASSERT(NULL != indices); 558 SkASSERT(NULL != transforms); 559 560 // Don't compute a bounding box for setupDstReadIfNecessary(), we'll opt 561 // instead for it to just copy the entire dst. Realistically this is a moot 562 // point, because any context that supports NV_path_rendering will also 563 // support NV_blend_equation_advanced. 564 GrDeviceCoordTexture dstCopy; 565 if (!this->setupDstReadIfNecessary(&dstCopy, NULL)) { 566 return; 567 } 568 569 this->onDrawPaths(pathRange, indices, count, transforms, transformsType, fill, 570 dstCopy.texture() ? &dstCopy : NULL); 571} 572 573typedef GrTraceMarkerSet::Iter TMIter; 574void GrDrawTarget::saveActiveTraceMarkers() { 575 if (this->caps()->gpuTracingSupport()) { 576 SkASSERT(0 == fStoredTraceMarkers.count()); 577 fStoredTraceMarkers.addSet(fActiveTraceMarkers); 578 for (TMIter iter = fStoredTraceMarkers.begin(); iter != fStoredTraceMarkers.end(); ++iter) { 579 this->removeGpuTraceMarker(&(*iter)); 580 } 581 } 582} 583 584void GrDrawTarget::restoreActiveTraceMarkers() { 585 if (this->caps()->gpuTracingSupport()) { 586 SkASSERT(0 == fActiveTraceMarkers.count()); 587 for (TMIter iter = fStoredTraceMarkers.begin(); iter != fStoredTraceMarkers.end(); ++iter) { 588 this->addGpuTraceMarker(&(*iter)); 589 } 590 for (TMIter iter = fActiveTraceMarkers.begin(); iter != fActiveTraceMarkers.end(); ++iter) { 591 this->fStoredTraceMarkers.remove(*iter); 592 } 593 } 594} 595 596void GrDrawTarget::addGpuTraceMarker(const GrGpuTraceMarker* marker) { 597 if (this->caps()->gpuTracingSupport()) { 598 SkASSERT(fGpuTraceMarkerCount >= 0); 599 this->fActiveTraceMarkers.add(*marker); 600 this->didAddGpuTraceMarker(); 601 ++fGpuTraceMarkerCount; 602 } 603} 604 605void GrDrawTarget::removeGpuTraceMarker(const GrGpuTraceMarker* marker) { 606 if (this->caps()->gpuTracingSupport()) { 607 SkASSERT(fGpuTraceMarkerCount >= 1); 608 this->fActiveTraceMarkers.remove(*marker); 609 this->didRemoveGpuTraceMarker(); 610 --fGpuTraceMarkerCount; 611 } 612} 613 614//////////////////////////////////////////////////////////////////////////////// 615 616bool GrDrawTarget::canApplyCoverage() const { 617 // we can correctly apply coverage if a) we have dual source blending 618 // or b) one of our blend optimizations applies 619 // or c) the src, dst blend coeffs are 1,0 and we will read Dst Color 620 GrBlendCoeff srcCoeff; 621 GrBlendCoeff dstCoeff; 622 GrDrawState::BlendOptFlags flag = this->getDrawState().getBlendOpts(true, &srcCoeff, &dstCoeff); 623 return this->caps()->dualSourceBlendingSupport() || 624 GrDrawState::kNone_BlendOpt != flag || 625 (this->getDrawState().willEffectReadDstColor() && 626 kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff); 627} 628 629//////////////////////////////////////////////////////////////////////////////// 630 631void GrDrawTarget::drawIndexedInstances(GrPrimitiveType type, 632 int instanceCount, 633 int verticesPerInstance, 634 int indicesPerInstance, 635 const SkRect* devBounds) { 636 if (!verticesPerInstance || !indicesPerInstance) { 637 return; 638 } 639 640 int maxInstancesPerDraw = this->indexCountInCurrentSource() / indicesPerInstance; 641 if (!maxInstancesPerDraw) { 642 return; 643 } 644 645 DrawInfo info; 646 info.fPrimitiveType = type; 647 info.fStartIndex = 0; 648 info.fStartVertex = 0; 649 info.fIndicesPerInstance = indicesPerInstance; 650 info.fVerticesPerInstance = verticesPerInstance; 651 652 // Set the same bounds for all the draws. 653 if (NULL != devBounds) { 654 info.setDevBounds(*devBounds); 655 } 656 // TODO: We should continue with incorrect blending. 657 if (!this->setupDstReadIfNecessary(&info)) { 658 return; 659 } 660 661 while (instanceCount) { 662 info.fInstanceCount = SkTMin(instanceCount, maxInstancesPerDraw); 663 info.fVertexCount = info.fInstanceCount * verticesPerInstance; 664 info.fIndexCount = info.fInstanceCount * indicesPerInstance; 665 666 if (this->checkDraw(type, 667 info.fStartVertex, 668 info.fStartIndex, 669 info.fVertexCount, 670 info.fIndexCount)) { 671 this->onDraw(info); 672 } 673 info.fStartVertex += info.fVertexCount; 674 instanceCount -= info.fInstanceCount; 675 } 676} 677 678//////////////////////////////////////////////////////////////////////////////// 679 680namespace { 681 682// position + (optional) texture coord 683extern const GrVertexAttrib gBWRectPosUVAttribs[] = { 684 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, 685 {kVec2f_GrVertexAttribType, sizeof(SkPoint), kLocalCoord_GrVertexAttribBinding} 686}; 687 688void set_vertex_attributes(GrDrawState* drawState, bool hasUVs) { 689 if (hasUVs) { 690 drawState->setVertexAttribs<gBWRectPosUVAttribs>(2); 691 } else { 692 drawState->setVertexAttribs<gBWRectPosUVAttribs>(1); 693 } 694} 695 696}; 697 698void GrDrawTarget::onDrawRect(const SkRect& rect, 699 const SkRect* localRect, 700 const SkMatrix* localMatrix) { 701 702 set_vertex_attributes(this->drawState(), NULL != localRect); 703 704 AutoReleaseGeometry geo(this, 4, 0); 705 if (!geo.succeeded()) { 706 GrPrintf("Failed to get space for vertices!\n"); 707 return; 708 } 709 710 size_t vsize = this->drawState()->getVertexSize(); 711 geo.positions()->setRectFan(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, vsize); 712 if (NULL != localRect) { 713 SkPoint* coords = GrTCast<SkPoint*>(GrTCast<intptr_t>(geo.vertices()) + 714 sizeof(SkPoint)); 715 coords->setRectFan(localRect->fLeft, localRect->fTop, 716 localRect->fRight, localRect->fBottom, 717 vsize); 718 if (NULL != localMatrix) { 719 localMatrix->mapPointsWithStride(coords, vsize, 4); 720 } 721 } 722 SkRect bounds; 723 this->getDrawState().getViewMatrix().mapRect(&bounds, rect); 724 725 this->drawNonIndexed(kTriangleFan_GrPrimitiveType, 0, 4, &bounds); 726} 727 728void GrDrawTarget::clipWillBeSet(const GrClipData* clipData) { 729} 730 731//////////////////////////////////////////////////////////////////////////////// 732 733GrDrawTarget::AutoStateRestore::AutoStateRestore() { 734 fDrawTarget = NULL; 735} 736 737GrDrawTarget::AutoStateRestore::AutoStateRestore(GrDrawTarget* target, 738 ASRInit init, 739 const SkMatrix* vm) { 740 fDrawTarget = NULL; 741 this->set(target, init, vm); 742} 743 744GrDrawTarget::AutoStateRestore::~AutoStateRestore() { 745 if (NULL != fDrawTarget) { 746 fDrawTarget->setDrawState(fSavedState); 747 fSavedState->unref(); 748 } 749} 750 751void GrDrawTarget::AutoStateRestore::set(GrDrawTarget* target, ASRInit init, const SkMatrix* vm) { 752 SkASSERT(NULL == fDrawTarget); 753 fDrawTarget = target; 754 fSavedState = target->drawState(); 755 SkASSERT(fSavedState); 756 fSavedState->ref(); 757 if (kReset_ASRInit == init) { 758 if (NULL == vm) { 759 // calls the default cons 760 fTempState.init(); 761 } else { 762 SkNEW_IN_TLAZY(&fTempState, GrDrawState, (*vm)); 763 } 764 } else { 765 SkASSERT(kPreserve_ASRInit == init); 766 if (NULL == vm) { 767 fTempState.set(*fSavedState); 768 } else { 769 SkNEW_IN_TLAZY(&fTempState, GrDrawState, (*fSavedState, *vm)); 770 } 771 } 772 target->setDrawState(fTempState.get()); 773} 774 775bool GrDrawTarget::AutoStateRestore::setIdentity(GrDrawTarget* target, ASRInit init) { 776 SkASSERT(NULL == fDrawTarget); 777 fDrawTarget = target; 778 fSavedState = target->drawState(); 779 SkASSERT(fSavedState); 780 fSavedState->ref(); 781 if (kReset_ASRInit == init) { 782 // calls the default cons 783 fTempState.init(); 784 } else { 785 SkASSERT(kPreserve_ASRInit == init); 786 // calls the copy cons 787 fTempState.set(*fSavedState); 788 if (!fTempState.get()->setIdentityViewMatrix()) { 789 // let go of any resources held by the temp 790 fTempState.get()->reset(); 791 fDrawTarget = NULL; 792 fSavedState->unref(); 793 fSavedState = NULL; 794 return false; 795 } 796 } 797 target->setDrawState(fTempState.get()); 798 return true; 799} 800 801//////////////////////////////////////////////////////////////////////////////// 802 803GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry( 804 GrDrawTarget* target, 805 int vertexCount, 806 int indexCount) { 807 fTarget = NULL; 808 this->set(target, vertexCount, indexCount); 809} 810 811GrDrawTarget::AutoReleaseGeometry::AutoReleaseGeometry() { 812 fTarget = NULL; 813} 814 815GrDrawTarget::AutoReleaseGeometry::~AutoReleaseGeometry() { 816 this->reset(); 817} 818 819bool GrDrawTarget::AutoReleaseGeometry::set(GrDrawTarget* target, 820 int vertexCount, 821 int indexCount) { 822 this->reset(); 823 fTarget = target; 824 bool success = true; 825 if (NULL != fTarget) { 826 fTarget = target; 827 success = target->reserveVertexAndIndexSpace(vertexCount, 828 indexCount, 829 &fVertices, 830 &fIndices); 831 if (!success) { 832 fTarget = NULL; 833 this->reset(); 834 } 835 } 836 SkASSERT(success == (NULL != fTarget)); 837 return success; 838} 839 840void GrDrawTarget::AutoReleaseGeometry::reset() { 841 if (NULL != fTarget) { 842 if (NULL != fVertices) { 843 fTarget->resetVertexSource(); 844 } 845 if (NULL != fIndices) { 846 fTarget->resetIndexSource(); 847 } 848 fTarget = NULL; 849 } 850 fVertices = NULL; 851 fIndices = NULL; 852} 853 854GrDrawTarget::AutoClipRestore::AutoClipRestore(GrDrawTarget* target, const SkIRect& newClip) { 855 fTarget = target; 856 fClip = fTarget->getClip(); 857 fStack.init(); 858 fStack.get()->clipDevRect(newClip, SkRegion::kReplace_Op); 859 fReplacementClip.fClipStack = fStack.get(); 860 target->setClip(&fReplacementClip); 861} 862 863namespace { 864// returns true if the read/written rect intersects the src/dst and false if not. 865bool clip_srcrect_and_dstpoint(const GrSurface* dst, 866 const GrSurface* src, 867 const SkIRect& srcRect, 868 const SkIPoint& dstPoint, 869 SkIRect* clippedSrcRect, 870 SkIPoint* clippedDstPoint) { 871 *clippedSrcRect = srcRect; 872 *clippedDstPoint = dstPoint; 873 874 // clip the left edge to src and dst bounds, adjusting dstPoint if necessary 875 if (clippedSrcRect->fLeft < 0) { 876 clippedDstPoint->fX -= clippedSrcRect->fLeft; 877 clippedSrcRect->fLeft = 0; 878 } 879 if (clippedDstPoint->fX < 0) { 880 clippedSrcRect->fLeft -= clippedDstPoint->fX; 881 clippedDstPoint->fX = 0; 882 } 883 884 // clip the top edge to src and dst bounds, adjusting dstPoint if necessary 885 if (clippedSrcRect->fTop < 0) { 886 clippedDstPoint->fY -= clippedSrcRect->fTop; 887 clippedSrcRect->fTop = 0; 888 } 889 if (clippedDstPoint->fY < 0) { 890 clippedSrcRect->fTop -= clippedDstPoint->fY; 891 clippedDstPoint->fY = 0; 892 } 893 894 // clip the right edge to the src and dst bounds. 895 if (clippedSrcRect->fRight > src->width()) { 896 clippedSrcRect->fRight = src->width(); 897 } 898 if (clippedDstPoint->fX + clippedSrcRect->width() > dst->width()) { 899 clippedSrcRect->fRight = clippedSrcRect->fLeft + dst->width() - clippedDstPoint->fX; 900 } 901 902 // clip the bottom edge to the src and dst bounds. 903 if (clippedSrcRect->fBottom > src->height()) { 904 clippedSrcRect->fBottom = src->height(); 905 } 906 if (clippedDstPoint->fY + clippedSrcRect->height() > dst->height()) { 907 clippedSrcRect->fBottom = clippedSrcRect->fTop + dst->height() - clippedDstPoint->fY; 908 } 909 910 // The above clipping steps may have inverted the rect if it didn't intersect either the src or 911 // dst bounds. 912 return !clippedSrcRect->isEmpty(); 913} 914} 915 916bool GrDrawTarget::copySurface(GrSurface* dst, 917 GrSurface* src, 918 const SkIRect& srcRect, 919 const SkIPoint& dstPoint) { 920 SkASSERT(NULL != dst); 921 SkASSERT(NULL != src); 922 923 SkIRect clippedSrcRect; 924 SkIPoint clippedDstPoint; 925 // If the rect is outside the src or dst then we've already succeeded. 926 if (!clip_srcrect_and_dstpoint(dst, 927 src, 928 srcRect, 929 dstPoint, 930 &clippedSrcRect, 931 &clippedDstPoint)) { 932 SkASSERT(this->canCopySurface(dst, src, srcRect, dstPoint)); 933 return true; 934 } 935 936 bool result = this->onCopySurface(dst, src, clippedSrcRect, clippedDstPoint); 937 SkASSERT(result == this->canCopySurface(dst, src, clippedSrcRect, clippedDstPoint)); 938 return result; 939} 940 941bool GrDrawTarget::canCopySurface(GrSurface* dst, 942 GrSurface* src, 943 const SkIRect& srcRect, 944 const SkIPoint& dstPoint) { 945 SkASSERT(NULL != dst); 946 SkASSERT(NULL != src); 947 948 SkIRect clippedSrcRect; 949 SkIPoint clippedDstPoint; 950 // If the rect is outside the src or dst then we're guaranteed success 951 if (!clip_srcrect_and_dstpoint(dst, 952 src, 953 srcRect, 954 dstPoint, 955 &clippedSrcRect, 956 &clippedDstPoint)) { 957 return true; 958 } 959 return this->onCanCopySurface(dst, src, clippedSrcRect, clippedDstPoint); 960} 961 962bool GrDrawTarget::onCanCopySurface(GrSurface* dst, 963 GrSurface* src, 964 const SkIRect& srcRect, 965 const SkIPoint& dstPoint) { 966 // Check that the read/write rects are contained within the src/dst bounds. 967 SkASSERT(!srcRect.isEmpty()); 968 SkASSERT(SkIRect::MakeWH(src->width(), src->height()).contains(srcRect)); 969 SkASSERT(dstPoint.fX >= 0 && dstPoint.fY >= 0); 970 SkASSERT(dstPoint.fX + srcRect.width() <= dst->width() && 971 dstPoint.fY + srcRect.height() <= dst->height()); 972 973 return !dst->isSameAs(src) && NULL != dst->asRenderTarget() && NULL != src->asTexture(); 974} 975 976bool GrDrawTarget::onCopySurface(GrSurface* dst, 977 GrSurface* src, 978 const SkIRect& srcRect, 979 const SkIPoint& dstPoint) { 980 if (!GrDrawTarget::onCanCopySurface(dst, src, srcRect, dstPoint)) { 981 return false; 982 } 983 984 GrRenderTarget* rt = dst->asRenderTarget(); 985 GrTexture* tex = src->asTexture(); 986 987 GrDrawTarget::AutoStateRestore asr(this, kReset_ASRInit); 988 this->drawState()->setRenderTarget(rt); 989 SkMatrix matrix; 990 matrix.setTranslate(SkIntToScalar(srcRect.fLeft - dstPoint.fX), 991 SkIntToScalar(srcRect.fTop - dstPoint.fY)); 992 matrix.postIDiv(tex->width(), tex->height()); 993 this->drawState()->addColorTextureEffect(tex, matrix); 994 SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, 995 dstPoint.fY, 996 srcRect.width(), 997 srcRect.height()); 998 this->drawSimpleRect(dstRect); 999 return true; 1000} 1001 1002void GrDrawTarget::initCopySurfaceDstDesc(const GrSurface* src, GrTextureDesc* desc) { 1003 // Make the dst of the copy be a render target because the default copySurface draws to the dst. 1004 desc->fOrigin = kDefault_GrSurfaceOrigin; 1005 desc->fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit; 1006 desc->fConfig = src->config(); 1007} 1008 1009/////////////////////////////////////////////////////////////////////////////// 1010 1011void GrDrawTargetCaps::reset() { 1012 fMipMapSupport = false; 1013 fNPOTTextureTileSupport = false; 1014 fTwoSidedStencilSupport = false; 1015 fStencilWrapOpsSupport = false; 1016 fHWAALineSupport = false; 1017 fShaderDerivativeSupport = false; 1018 fGeometryShaderSupport = false; 1019 fDualSourceBlendingSupport = false; 1020 fPathRenderingSupport = false; 1021 fDstReadInShaderSupport = false; 1022 fDiscardRenderTargetSupport = false; 1023 fReuseScratchTextures = true; 1024 fGpuTracingSupport = false; 1025 fCompressedTexSubImageSupport = false; 1026 1027 fMapBufferFlags = kNone_MapFlags; 1028 1029 fMaxRenderTargetSize = 0; 1030 fMaxTextureSize = 0; 1031 fMaxSampleCount = 0; 1032 1033 memset(fConfigRenderSupport, 0, sizeof(fConfigRenderSupport)); 1034 memset(fConfigTextureSupport, 0, sizeof(fConfigTextureSupport)); 1035} 1036 1037GrDrawTargetCaps& GrDrawTargetCaps::operator=(const GrDrawTargetCaps& other) { 1038 fMipMapSupport = other.fMipMapSupport; 1039 fNPOTTextureTileSupport = other.fNPOTTextureTileSupport; 1040 fTwoSidedStencilSupport = other.fTwoSidedStencilSupport; 1041 fStencilWrapOpsSupport = other.fStencilWrapOpsSupport; 1042 fHWAALineSupport = other.fHWAALineSupport; 1043 fShaderDerivativeSupport = other.fShaderDerivativeSupport; 1044 fGeometryShaderSupport = other.fGeometryShaderSupport; 1045 fDualSourceBlendingSupport = other.fDualSourceBlendingSupport; 1046 fPathRenderingSupport = other.fPathRenderingSupport; 1047 fDstReadInShaderSupport = other.fDstReadInShaderSupport; 1048 fDiscardRenderTargetSupport = other.fDiscardRenderTargetSupport; 1049 fReuseScratchTextures = other.fReuseScratchTextures; 1050 fGpuTracingSupport = other.fGpuTracingSupport; 1051 fCompressedTexSubImageSupport = other.fCompressedTexSubImageSupport; 1052 1053 fMapBufferFlags = other.fMapBufferFlags; 1054 1055 fMaxRenderTargetSize = other.fMaxRenderTargetSize; 1056 fMaxTextureSize = other.fMaxTextureSize; 1057 fMaxSampleCount = other.fMaxSampleCount; 1058 1059 memcpy(fConfigRenderSupport, other.fConfigRenderSupport, sizeof(fConfigRenderSupport)); 1060 memcpy(fConfigTextureSupport, other.fConfigTextureSupport, sizeof(fConfigTextureSupport)); 1061 1062 return *this; 1063} 1064 1065static SkString map_flags_to_string(uint32_t flags) { 1066 SkString str; 1067 if (GrDrawTargetCaps::kNone_MapFlags == flags) { 1068 str = "none"; 1069 } else { 1070 SkASSERT(GrDrawTargetCaps::kCanMap_MapFlag & flags); 1071 SkDEBUGCODE(flags &= ~GrDrawTargetCaps::kCanMap_MapFlag); 1072 str = "can_map"; 1073 1074 if (GrDrawTargetCaps::kSubset_MapFlag & flags) { 1075 str.append(" partial"); 1076 } else { 1077 str.append(" full"); 1078 } 1079 SkDEBUGCODE(flags &= ~GrDrawTargetCaps::kSubset_MapFlag); 1080 } 1081 SkASSERT(0 == flags); // Make sure we handled all the flags. 1082 return str; 1083} 1084 1085SkString GrDrawTargetCaps::dump() const { 1086 SkString r; 1087 static const char* gNY[] = {"NO", "YES"}; 1088 r.appendf("MIP Map Support : %s\n", gNY[fMipMapSupport]); 1089 r.appendf("NPOT Texture Tile Support : %s\n", gNY[fNPOTTextureTileSupport]); 1090 r.appendf("Two Sided Stencil Support : %s\n", gNY[fTwoSidedStencilSupport]); 1091 r.appendf("Stencil Wrap Ops Support : %s\n", gNY[fStencilWrapOpsSupport]); 1092 r.appendf("HW AA Lines Support : %s\n", gNY[fHWAALineSupport]); 1093 r.appendf("Shader Derivative Support : %s\n", gNY[fShaderDerivativeSupport]); 1094 r.appendf("Geometry Shader Support : %s\n", gNY[fGeometryShaderSupport]); 1095 r.appendf("Dual Source Blending Support : %s\n", gNY[fDualSourceBlendingSupport]); 1096 r.appendf("Path Rendering Support : %s\n", gNY[fPathRenderingSupport]); 1097 r.appendf("Dst Read In Shader Support : %s\n", gNY[fDstReadInShaderSupport]); 1098 r.appendf("Discard Render Target Support: %s\n", gNY[fDiscardRenderTargetSupport]); 1099 r.appendf("Reuse Scratch Textures : %s\n", gNY[fReuseScratchTextures]); 1100 r.appendf("Gpu Tracing Support : %s\n", gNY[fGpuTracingSupport]); 1101 r.appendf("Compressed Update Support : %s\n", gNY[fCompressedTexSubImageSupport]); 1102 r.appendf("Max Texture Size : %d\n", fMaxTextureSize); 1103 r.appendf("Max Render Target Size : %d\n", fMaxRenderTargetSize); 1104 r.appendf("Max Sample Count : %d\n", fMaxSampleCount); 1105 1106 r.appendf("Map Buffer Support : %s\n", map_flags_to_string(fMapBufferFlags).c_str()); 1107 1108 static const char* kConfigNames[] = { 1109 "Unknown", // kUnknown_GrPixelConfig 1110 "Alpha8", // kAlpha_8_GrPixelConfig, 1111 "Index8", // kIndex_8_GrPixelConfig, 1112 "RGB565", // kRGB_565_GrPixelConfig, 1113 "RGBA444", // kRGBA_4444_GrPixelConfig, 1114 "RGBA8888", // kRGBA_8888_GrPixelConfig, 1115 "BGRA8888", // kBGRA_8888_GrPixelConfig, 1116 "ETC1", // kETC1_GrPixelConfig, 1117 "LATC", // kLATC_GrPixelConfig, 1118 "R11EAC", // kR11_EAC_GrPixelConfig, 1119 "ASTC12x12",// kASTC_12x12_GrPixelConfig, 1120 "RGBAFloat", // kRGBA_float_GrPixelConfig 1121 }; 1122 GR_STATIC_ASSERT(0 == kUnknown_GrPixelConfig); 1123 GR_STATIC_ASSERT(1 == kAlpha_8_GrPixelConfig); 1124 GR_STATIC_ASSERT(2 == kIndex_8_GrPixelConfig); 1125 GR_STATIC_ASSERT(3 == kRGB_565_GrPixelConfig); 1126 GR_STATIC_ASSERT(4 == kRGBA_4444_GrPixelConfig); 1127 GR_STATIC_ASSERT(5 == kRGBA_8888_GrPixelConfig); 1128 GR_STATIC_ASSERT(6 == kBGRA_8888_GrPixelConfig); 1129 GR_STATIC_ASSERT(7 == kETC1_GrPixelConfig); 1130 GR_STATIC_ASSERT(8 == kLATC_GrPixelConfig); 1131 GR_STATIC_ASSERT(9 == kR11_EAC_GrPixelConfig); 1132 GR_STATIC_ASSERT(10 == kASTC_12x12_GrPixelConfig); 1133 GR_STATIC_ASSERT(11 == kRGBA_float_GrPixelConfig); 1134 GR_STATIC_ASSERT(SK_ARRAY_COUNT(kConfigNames) == kGrPixelConfigCnt); 1135 1136 SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][0]); 1137 SkASSERT(!fConfigRenderSupport[kUnknown_GrPixelConfig][1]); 1138 1139 for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i) { 1140 r.appendf("%s is renderable: %s, with MSAA: %s\n", 1141 kConfigNames[i], 1142 gNY[fConfigRenderSupport[i][0]], 1143 gNY[fConfigRenderSupport[i][1]]); 1144 } 1145 1146 SkASSERT(!fConfigTextureSupport[kUnknown_GrPixelConfig]); 1147 1148 for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i) { 1149 r.appendf("%s is uploadable to a texture: %s\n", 1150 kConfigNames[i], 1151 gNY[fConfigTextureSupport[i]]); 1152 } 1153 1154 return r; 1155} 1156