1 2 /* 3 * Copyright 2011 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 #include "GrContext.h" 11 12 #include "effects/GrConfigConversionEffect.h" 13 #include "effects/GrDashingEffect.h" 14 #include "effects/GrSingleTextureEffect.h" 15 16 #include "GrAARectRenderer.h" 17 #include "GrBufferAllocPool.h" 18 #include "GrGpu.h" 19 #include "GrDistanceFieldTextContext.h" 20 #include "GrDrawTargetCaps.h" 21 #include "GrIndexBuffer.h" 22 #include "GrInOrderDrawBuffer.h" 23 #include "GrLayerCache.h" 24 #include "GrOvalRenderer.h" 25 #include "GrPathRenderer.h" 26 #include "GrPathUtils.h" 27 #include "GrResourceCache.h" 28 #include "GrResourceCache2.h" 29 #include "GrSoftwarePathRenderer.h" 30 #include "GrStencilBuffer.h" 31 #include "GrStencilAndCoverTextContext.h" 32 #include "GrStrokeInfo.h" 33 #include "GrTextStrike.h" 34 #include "GrTraceMarker.h" 35 #include "GrTracing.h" 36 #include "SkDashPathPriv.h" 37 #include "SkGr.h" 38 #include "SkRTConf.h" 39 #include "SkRRect.h" 40 #include "SkStrokeRec.h" 41 #include "SkTLazy.h" 42 #include "SkTLS.h" 43 #include "SkTraceEvent.h" 44 45 // It can be useful to set this to false to test whether a bug is caused by using the 46 // InOrderDrawBuffer, to compare performance of using/not using InOrderDrawBuffer, or to make 47 // debugging simpler. 48 SK_CONF_DECLARE(bool, c_Defer, "gpu.deferContext", true, 49 "Defers rendering in GrContext via GrInOrderDrawBuffer."); 50 51 #define BUFFERED_DRAW (c_Defer ? kYes_BufferedDraw : kNo_BufferedDraw) 52 53 #ifdef SK_DEBUG 54 // change this to a 1 to see notifications when partial coverage fails 55 #define GR_DEBUG_PARTIAL_COVERAGE_CHECK 0 56 #else 57 #define GR_DEBUG_PARTIAL_COVERAGE_CHECK 0 58 #endif 59 60 static const size_t MAX_RESOURCE_CACHE_COUNT = GR_DEFAULT_RESOURCE_CACHE_COUNT_LIMIT; 61 static const size_t MAX_RESOURCE_CACHE_BYTES = GR_DEFAULT_RESOURCE_CACHE_MB_LIMIT * 1024 * 1024; 62 63 static const size_t DRAW_BUFFER_VBPOOL_BUFFER_SIZE = 1 << 15; 64 static const int DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS = 4; 65 66 static const size_t DRAW_BUFFER_IBPOOL_BUFFER_SIZE = 1 << 11; 67 static const int DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS = 4; 68 69 #define ASSERT_OWNED_RESOURCE(R) SkASSERT(!(R) || (R)->getContext() == this) 70 71 // Glorified typedef to avoid including GrDrawState.h in GrContext.h 72 class GrContext::AutoRestoreEffects : public GrDrawState::AutoRestoreEffects {}; 73 74 class GrContext::AutoCheckFlush { 75 public: 76 AutoCheckFlush(GrContext* context) : fContext(context) { SkASSERT(context); } 77 78 ~AutoCheckFlush() { 79 if (fContext->fFlushToReduceCacheSize) { 80 fContext->flush(); 81 } 82 } 83 84 private: 85 GrContext* fContext; 86 }; 87 88 GrContext* GrContext::Create(GrBackend backend, GrBackendContext backendContext, 89 const Options* opts) { 90 GrContext* context; 91 if (NULL == opts) { 92 context = SkNEW_ARGS(GrContext, (Options())); 93 } else { 94 context = SkNEW_ARGS(GrContext, (*opts)); 95 } 96 97 if (context->init(backend, backendContext)) { 98 return context; 99 } else { 100 context->unref(); 101 return NULL; 102 } 103 } 104 105 GrContext::GrContext(const Options& opts) : fOptions(opts) { 106 fDrawState = NULL; 107 fGpu = NULL; 108 fClip = NULL; 109 fPathRendererChain = NULL; 110 fSoftwarePathRenderer = NULL; 111 fResourceCache = NULL; 112 fResourceCache2 = NULL; 113 fFontCache = NULL; 114 fDrawBuffer = NULL; 115 fDrawBufferVBAllocPool = NULL; 116 fDrawBufferIBAllocPool = NULL; 117 fFlushToReduceCacheSize = false; 118 fAARectRenderer = NULL; 119 fOvalRenderer = NULL; 120 fViewMatrix.reset(); 121 fMaxTextureSizeOverride = 1 << 20; 122 } 123 124 bool GrContext::init(GrBackend backend, GrBackendContext backendContext) { 125 SkASSERT(NULL == fGpu); 126 127 fGpu = GrGpu::Create(backend, backendContext, this); 128 if (NULL == fGpu) { 129 return false; 130 } 131 132 fDrawState = SkNEW(GrDrawState); 133 fGpu->setDrawState(fDrawState); 134 135 fResourceCache = SkNEW_ARGS(GrResourceCache, (MAX_RESOURCE_CACHE_COUNT, 136 MAX_RESOURCE_CACHE_BYTES)); 137 fResourceCache->setOverbudgetCallback(OverbudgetCB, this); 138 fResourceCache2 = SkNEW(GrResourceCache2); 139 140 fFontCache = SkNEW_ARGS(GrFontCache, (fGpu)); 141 142 fLayerCache.reset(SkNEW_ARGS(GrLayerCache, (this))); 143 144 fLastDrawWasBuffered = kNo_BufferedDraw; 145 146 fAARectRenderer = SkNEW(GrAARectRenderer); 147 fOvalRenderer = SkNEW(GrOvalRenderer); 148 149 fDidTestPMConversions = false; 150 151 this->setupDrawBuffer(); 152 153 return true; 154 } 155 156 GrContext::~GrContext() { 157 if (NULL == fGpu) { 158 return; 159 } 160 161 this->flush(); 162 163 for (int i = 0; i < fCleanUpData.count(); ++i) { 164 (*fCleanUpData[i].fFunc)(this, fCleanUpData[i].fInfo); 165 } 166 167 delete fResourceCache2; 168 fResourceCache2 = NULL; 169 delete fResourceCache; 170 fResourceCache = NULL; 171 delete fFontCache; 172 delete fDrawBuffer; 173 delete fDrawBufferVBAllocPool; 174 delete fDrawBufferIBAllocPool; 175 176 fAARectRenderer->unref(); 177 fOvalRenderer->unref(); 178 179 fGpu->unref(); 180 SkSafeUnref(fPathRendererChain); 181 SkSafeUnref(fSoftwarePathRenderer); 182 fDrawState->unref(); 183 } 184 185 void GrContext::abandonContext() { 186 // abandon first to so destructors 187 // don't try to free the resources in the API. 188 fResourceCache2->abandonAll(); 189 190 fGpu->contextAbandoned(); 191 192 // a path renderer may be holding onto resources that 193 // are now unusable 194 SkSafeSetNull(fPathRendererChain); 195 SkSafeSetNull(fSoftwarePathRenderer); 196 197 delete fDrawBuffer; 198 fDrawBuffer = NULL; 199 200 delete fDrawBufferVBAllocPool; 201 fDrawBufferVBAllocPool = NULL; 202 203 delete fDrawBufferIBAllocPool; 204 fDrawBufferIBAllocPool = NULL; 205 206 fAARectRenderer->reset(); 207 fOvalRenderer->reset(); 208 209 fResourceCache->purgeAllUnlocked(); 210 211 fFontCache->freeAll(); 212 fLayerCache->freeAll(); 213 } 214 215 void GrContext::resetContext(uint32_t state) { 216 fGpu->markContextDirty(state); 217 } 218 219 void GrContext::freeGpuResources() { 220 this->flush(); 221 222 fGpu->purgeResources(); 223 if (fDrawBuffer) { 224 fDrawBuffer->purgeResources(); 225 } 226 227 fAARectRenderer->reset(); 228 fOvalRenderer->reset(); 229 230 fResourceCache->purgeAllUnlocked(); 231 fFontCache->freeAll(); 232 fLayerCache->freeAll(); 233 // a path renderer may be holding onto resources 234 SkSafeSetNull(fPathRendererChain); 235 SkSafeSetNull(fSoftwarePathRenderer); 236 } 237 238 void GrContext::getResourceCacheUsage(int* resourceCount, size_t* resourceBytes) const { 239 if (resourceCount) { 240 *resourceCount = fResourceCache->getCachedResourceCount(); 241 } 242 if (resourceBytes) { 243 *resourceBytes = fResourceCache->getCachedResourceBytes(); 244 } 245 } 246 247 GrTextContext* GrContext::createTextContext(GrRenderTarget* renderTarget, 248 const SkDeviceProperties& 249 leakyProperties, 250 bool enableDistanceFieldFonts) { 251 if (fGpu->caps()->pathRenderingSupport()) { 252 if (renderTarget->getStencilBuffer() && renderTarget->isMultisampled()) { 253 return SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties)); 254 } 255 } 256 return SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties, 257 enableDistanceFieldFonts)); 258 } 259 260 //////////////////////////////////////////////////////////////////////////////// 261 262 GrTexture* GrContext::findAndRefTexture(const GrTextureDesc& desc, 263 const GrCacheID& cacheID, 264 const GrTextureParams* params) { 265 GrResourceKey resourceKey = GrTextureImpl::ComputeKey(fGpu, params, desc, cacheID); 266 GrGpuResource* resource = fResourceCache->find(resourceKey); 267 SkSafeRef(resource); 268 return static_cast<GrTexture*>(resource); 269 } 270 271 bool GrContext::isTextureInCache(const GrTextureDesc& desc, 272 const GrCacheID& cacheID, 273 const GrTextureParams* params) const { 274 GrResourceKey resourceKey = GrTextureImpl::ComputeKey(fGpu, params, desc, cacheID); 275 return fResourceCache->hasKey(resourceKey); 276 } 277 278 void GrContext::addStencilBuffer(GrStencilBuffer* sb) { 279 ASSERT_OWNED_RESOURCE(sb); 280 281 GrResourceKey resourceKey = GrStencilBuffer::ComputeKey(sb->width(), 282 sb->height(), 283 sb->numSamples()); 284 fResourceCache->addResource(resourceKey, sb); 285 } 286 287 GrStencilBuffer* GrContext::findStencilBuffer(int width, int height, 288 int sampleCnt) { 289 GrResourceKey resourceKey = GrStencilBuffer::ComputeKey(width, 290 height, 291 sampleCnt); 292 GrGpuResource* resource = fResourceCache->find(resourceKey); 293 return static_cast<GrStencilBuffer*>(resource); 294 } 295 296 static void stretch_image(void* dst, 297 int dstW, 298 int dstH, 299 const void* src, 300 int srcW, 301 int srcH, 302 size_t bpp) { 303 SkFixed dx = (srcW << 16) / dstW; 304 SkFixed dy = (srcH << 16) / dstH; 305 306 SkFixed y = dy >> 1; 307 308 size_t dstXLimit = dstW*bpp; 309 for (int j = 0; j < dstH; ++j) { 310 SkFixed x = dx >> 1; 311 const uint8_t* srcRow = reinterpret_cast<const uint8_t *>(src) + (y>>16)*srcW*bpp; 312 uint8_t* dstRow = reinterpret_cast<uint8_t *>(dst) + j*dstW*bpp; 313 for (size_t i = 0; i < dstXLimit; i += bpp) { 314 memcpy(dstRow + i, srcRow + (x>>16)*bpp, bpp); 315 x += dx; 316 } 317 y += dy; 318 } 319 } 320 321 namespace { 322 323 // position + local coordinate 324 extern const GrVertexAttrib gVertexAttribs[] = { 325 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, 326 {kVec2f_GrVertexAttribType, sizeof(SkPoint), kLocalCoord_GrVertexAttribBinding} 327 }; 328 329 }; 330 331 // The desired texture is NPOT and tiled but that isn't supported by 332 // the current hardware. Resize the texture to be a POT 333 GrTexture* GrContext::createResizedTexture(const GrTextureDesc& desc, 334 const GrCacheID& cacheID, 335 const void* srcData, 336 size_t rowBytes, 337 bool filter) { 338 SkAutoTUnref<GrTexture> clampedTexture(this->findAndRefTexture(desc, cacheID, NULL)); 339 if (NULL == clampedTexture) { 340 clampedTexture.reset(this->createTexture(NULL, desc, cacheID, srcData, rowBytes)); 341 342 if (NULL == clampedTexture) { 343 return NULL; 344 } 345 } 346 347 GrTextureDesc rtDesc = desc; 348 rtDesc.fFlags = rtDesc.fFlags | 349 kRenderTarget_GrTextureFlagBit | 350 kNoStencil_GrTextureFlagBit; 351 rtDesc.fWidth = GrNextPow2(desc.fWidth); 352 rtDesc.fHeight = GrNextPow2(desc.fHeight); 353 354 GrTexture* texture = fGpu->createTexture(rtDesc, NULL, 0); 355 356 if (texture) { 357 GrDrawTarget::AutoStateRestore asr(fGpu, GrDrawTarget::kReset_ASRInit); 358 GrDrawState* drawState = fGpu->drawState(); 359 drawState->setRenderTarget(texture->asRenderTarget()); 360 361 // if filtering is not desired then we want to ensure all 362 // texels in the resampled image are copies of texels from 363 // the original. 364 GrTextureParams params(SkShader::kClamp_TileMode, filter ? GrTextureParams::kBilerp_FilterMode : 365 GrTextureParams::kNone_FilterMode); 366 drawState->addColorTextureProcessor(clampedTexture, SkMatrix::I(), params); 367 368 drawState->setVertexAttribs<gVertexAttribs>(SK_ARRAY_COUNT(gVertexAttribs), 369 2 * sizeof(SkPoint)); 370 371 GrDrawTarget::AutoReleaseGeometry arg(fGpu, 4, 0); 372 373 if (arg.succeeded()) { 374 SkPoint* verts = (SkPoint*) arg.vertices(); 375 verts[0].setIRectFan(0, 0, texture->width(), texture->height(), 2 * sizeof(SkPoint)); 376 verts[1].setIRectFan(0, 0, 1, 1, 2 * sizeof(SkPoint)); 377 fGpu->drawNonIndexed(kTriangleFan_GrPrimitiveType, 0, 4); 378 } 379 } else { 380 // TODO: Our CPU stretch doesn't filter. But we create separate 381 // stretched textures when the texture params is either filtered or 382 // not. Either implement filtered stretch blit on CPU or just create 383 // one when FBO case fails. 384 385 rtDesc.fFlags = kNone_GrTextureFlags; 386 // no longer need to clamp at min RT size. 387 rtDesc.fWidth = GrNextPow2(desc.fWidth); 388 rtDesc.fHeight = GrNextPow2(desc.fHeight); 389 390 // We shouldn't be resizing a compressed texture. 391 SkASSERT(!GrPixelConfigIsCompressed(desc.fConfig)); 392 393 size_t bpp = GrBytesPerPixel(desc.fConfig); 394 GrAutoMalloc<128*128*4> stretchedPixels(bpp * rtDesc.fWidth * rtDesc.fHeight); 395 stretch_image(stretchedPixels.get(), rtDesc.fWidth, rtDesc.fHeight, 396 srcData, desc.fWidth, desc.fHeight, bpp); 397 398 size_t stretchedRowBytes = rtDesc.fWidth * bpp; 399 400 texture = fGpu->createTexture(rtDesc, stretchedPixels.get(), stretchedRowBytes); 401 SkASSERT(texture); 402 } 403 404 return texture; 405 } 406 407 GrTexture* GrContext::createTexture(const GrTextureParams* params, 408 const GrTextureDesc& desc, 409 const GrCacheID& cacheID, 410 const void* srcData, 411 size_t rowBytes, 412 GrResourceKey* cacheKey) { 413 GrResourceKey resourceKey = GrTextureImpl::ComputeKey(fGpu, params, desc, cacheID); 414 415 GrTexture* texture; 416 if (GrTextureImpl::NeedsResizing(resourceKey)) { 417 // We do not know how to resize compressed textures. 418 SkASSERT(!GrPixelConfigIsCompressed(desc.fConfig)); 419 420 texture = this->createResizedTexture(desc, cacheID, 421 srcData, rowBytes, 422 GrTextureImpl::NeedsBilerp(resourceKey)); 423 } else { 424 texture = fGpu->createTexture(desc, srcData, rowBytes); 425 } 426 427 if (texture) { 428 // Adding a resource could put us overbudget. Try to free up the 429 // necessary space before adding it. 430 fResourceCache->purgeAsNeeded(1, texture->gpuMemorySize()); 431 fResourceCache->addResource(resourceKey, texture); 432 433 if (cacheKey) { 434 *cacheKey = resourceKey; 435 } 436 } 437 438 return texture; 439 } 440 441 static GrTexture* create_scratch_texture(GrGpu* gpu, 442 GrResourceCache* resourceCache, 443 const GrTextureDesc& desc) { 444 GrTexture* texture = gpu->createTexture(desc, NULL, 0); 445 if (texture) { 446 GrResourceKey key = GrTextureImpl::ComputeScratchKey(texture->desc()); 447 // Adding a resource could put us overbudget. Try to free up the 448 // necessary space before adding it. 449 resourceCache->purgeAsNeeded(1, texture->gpuMemorySize()); 450 // Make the resource exclusive so future 'find' calls don't return it 451 resourceCache->addResource(key, texture, GrResourceCache::kHide_OwnershipFlag); 452 } 453 return texture; 454 } 455 456 GrTexture* GrContext::lockAndRefScratchTexture(const GrTextureDesc& inDesc, ScratchTexMatch match) { 457 458 SkASSERT((inDesc.fFlags & kRenderTarget_GrTextureFlagBit) || 459 !(inDesc.fFlags & kNoStencil_GrTextureFlagBit)); 460 461 // Renderable A8 targets are not universally supported (e.g., not on ANGLE) 462 SkASSERT(this->isConfigRenderable(kAlpha_8_GrPixelConfig, inDesc.fSampleCnt > 0) || 463 !(inDesc.fFlags & kRenderTarget_GrTextureFlagBit) || 464 (inDesc.fConfig != kAlpha_8_GrPixelConfig)); 465 466 if (!fGpu->caps()->reuseScratchTextures() && 467 !(inDesc.fFlags & kRenderTarget_GrTextureFlagBit)) { 468 // If we're never recycling this texture we can always make it the right size 469 return create_scratch_texture(fGpu, fResourceCache, inDesc); 470 } 471 472 GrTextureDesc desc = inDesc; 473 474 if (kApprox_ScratchTexMatch == match) { 475 // bin by pow2 with a reasonable min 476 static const int MIN_SIZE = 16; 477 desc.fWidth = SkTMax(MIN_SIZE, GrNextPow2(desc.fWidth)); 478 desc.fHeight = SkTMax(MIN_SIZE, GrNextPow2(desc.fHeight)); 479 } 480 481 GrGpuResource* resource = NULL; 482 int origWidth = desc.fWidth; 483 int origHeight = desc.fHeight; 484 485 do { 486 GrResourceKey key = GrTextureImpl::ComputeScratchKey(desc); 487 // Ensure we have exclusive access to the texture so future 'find' calls don't return it 488 resource = fResourceCache->find(key, GrResourceCache::kHide_OwnershipFlag); 489 if (resource) { 490 resource->ref(); 491 break; 492 } 493 if (kExact_ScratchTexMatch == match) { 494 break; 495 } 496 // We had a cache miss and we are in approx mode, relax the fit of the flags. 497 498 // We no longer try to reuse textures that were previously used as render targets in 499 // situations where no RT is needed; doing otherwise can confuse the video driver and 500 // cause significant performance problems in some cases. 501 if (desc.fFlags & kNoStencil_GrTextureFlagBit) { 502 desc.fFlags = desc.fFlags & ~kNoStencil_GrTextureFlagBit; 503 } else { 504 break; 505 } 506 507 } while (true); 508 509 if (NULL == resource) { 510 desc.fFlags = inDesc.fFlags; 511 desc.fWidth = origWidth; 512 desc.fHeight = origHeight; 513 resource = create_scratch_texture(fGpu, fResourceCache, desc); 514 } 515 516 return static_cast<GrTexture*>(resource); 517 } 518 519 void GrContext::addExistingTextureToCache(GrTexture* texture) { 520 521 if (NULL == texture) { 522 return; 523 } 524 525 // This texture should already have a cache entry since it was once 526 // attached 527 SkASSERT(texture->getCacheEntry()); 528 529 // Conceptually, the cache entry is going to assume responsibility 530 // for the creation ref. Assert refcnt == 1. 531 // Except that this also gets called when the texture is prematurely 532 // abandoned. In that case the ref count may be > 1. 533 // SkASSERT(texture->unique()); 534 535 if (fGpu->caps()->reuseScratchTextures() || texture->asRenderTarget()) { 536 // Since this texture came from an AutoScratchTexture it should 537 // still be in the exclusive pile. Recycle it. 538 fResourceCache->makeNonExclusive(texture->getCacheEntry()); 539 this->purgeCache(); 540 } else { 541 // When we aren't reusing textures we know this scratch texture 542 // will never be reused and would be just wasting time in the cache 543 fResourceCache->makeNonExclusive(texture->getCacheEntry()); 544 fResourceCache->deleteResource(texture->getCacheEntry()); 545 } 546 } 547 548 void GrContext::unlockScratchTexture(GrTexture* texture) { 549 if (texture->wasDestroyed()) { 550 if (texture->getCacheEntry()->key().isScratch()) { 551 // This texture was detached from the cache but the cache still had a ref to it but 552 // not a pointer to it. This will unref the texture and delete its resource cache 553 // entry. 554 delete texture->getCacheEntry(); 555 } 556 return; 557 } 558 559 ASSERT_OWNED_RESOURCE(texture); 560 SkASSERT(texture->getCacheEntry()); 561 562 // If this is a scratch texture we detached it from the cache 563 // while it was locked (to avoid two callers simultaneously getting 564 // the same texture). 565 if (texture->getCacheEntry()->key().isScratch()) { 566 if (fGpu->caps()->reuseScratchTextures() || texture->asRenderTarget()) { 567 fResourceCache->makeNonExclusive(texture->getCacheEntry()); 568 this->purgeCache(); 569 } else if (texture->unique()) { 570 // Only the cache now knows about this texture. Since we're never 571 // reusing scratch textures (in this code path) it would just be 572 // wasting time sitting in the cache. 573 fResourceCache->makeNonExclusive(texture->getCacheEntry()); 574 fResourceCache->deleteResource(texture->getCacheEntry()); 575 } else { 576 // In this case (there is still a non-cache ref) but we don't really 577 // want to readd it to the cache (since it will never be reused). 578 // Instead, give up the cache's ref and leave the decision up to 579 // addExistingTextureToCache once its ref count reaches 0. For 580 // this to work we need to leave it in the exclusive list. 581 texture->impl()->setFlag((GrTextureFlags) GrTextureImpl::kReturnToCache_FlagBit); 582 // Give up the cache's ref to the texture 583 texture->unref(); 584 } 585 } 586 } 587 588 void GrContext::purgeCache() { 589 if (fResourceCache) { 590 fResourceCache->purgeAsNeeded(); 591 } 592 } 593 594 bool GrContext::OverbudgetCB(void* data) { 595 SkASSERT(data); 596 597 GrContext* context = reinterpret_cast<GrContext*>(data); 598 599 // Flush the InOrderDrawBuffer to possibly free up some textures 600 context->fFlushToReduceCacheSize = true; 601 602 return true; 603 } 604 605 606 GrTexture* GrContext::createUncachedTexture(const GrTextureDesc& descIn, 607 void* srcData, 608 size_t rowBytes) { 609 GrTextureDesc descCopy = descIn; 610 return fGpu->createTexture(descCopy, srcData, rowBytes); 611 } 612 613 void GrContext::getResourceCacheLimits(int* maxTextures, size_t* maxTextureBytes) const { 614 fResourceCache->getLimits(maxTextures, maxTextureBytes); 615 } 616 617 void GrContext::setResourceCacheLimits(int maxTextures, size_t maxTextureBytes) { 618 fResourceCache->setLimits(maxTextures, maxTextureBytes); 619 } 620 621 int GrContext::getMaxTextureSize() const { 622 return SkTMin(fGpu->caps()->maxTextureSize(), fMaxTextureSizeOverride); 623 } 624 625 int GrContext::getMaxRenderTargetSize() const { 626 return fGpu->caps()->maxRenderTargetSize(); 627 } 628 629 int GrContext::getMaxSampleCount() const { 630 return fGpu->caps()->maxSampleCount(); 631 } 632 633 /////////////////////////////////////////////////////////////////////////////// 634 635 GrTexture* GrContext::wrapBackendTexture(const GrBackendTextureDesc& desc) { 636 return fGpu->wrapBackendTexture(desc); 637 } 638 639 GrRenderTarget* GrContext::wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc) { 640 return fGpu->wrapBackendRenderTarget(desc); 641 } 642 643 /////////////////////////////////////////////////////////////////////////////// 644 645 bool GrContext::supportsIndex8PixelConfig(const GrTextureParams* params, 646 int width, int height) const { 647 const GrDrawTargetCaps* caps = fGpu->caps(); 648 if (!caps->isConfigTexturable(kIndex_8_GrPixelConfig)) { 649 return false; 650 } 651 652 bool isPow2 = SkIsPow2(width) && SkIsPow2(height); 653 654 if (!isPow2) { 655 bool tiled = params && params->isTiled(); 656 if (tiled && !caps->npotTextureTileSupport()) { 657 return false; 658 } 659 } 660 return true; 661 } 662 663 664 //////////////////////////////////////////////////////////////////////////////// 665 666 void GrContext::clear(const SkIRect* rect, 667 const GrColor color, 668 bool canIgnoreRect, 669 GrRenderTarget* renderTarget) { 670 ASSERT_OWNED_RESOURCE(renderTarget); 671 AutoRestoreEffects are; 672 AutoCheckFlush acf(this); 673 GR_CREATE_TRACE_MARKER_CONTEXT("GrContext::clear", this); 674 GrDrawTarget* target = this->prepareToDraw(NULL, BUFFERED_DRAW, &are, &acf); 675 if (NULL == target) { 676 return; 677 } 678 target->clear(rect, color, canIgnoreRect, renderTarget); 679 } 680 681 void GrContext::drawPaint(const GrPaint& origPaint) { 682 // set rect to be big enough to fill the space, but not super-huge, so we 683 // don't overflow fixed-point implementations 684 SkRect r; 685 r.setLTRB(0, 0, 686 SkIntToScalar(getRenderTarget()->width()), 687 SkIntToScalar(getRenderTarget()->height())); 688 SkMatrix inverse; 689 SkTCopyOnFirstWrite<GrPaint> paint(origPaint); 690 AutoMatrix am; 691 GR_CREATE_TRACE_MARKER_CONTEXT("GrContext::drawPaint", this); 692 693 // We attempt to map r by the inverse matrix and draw that. mapRect will 694 // map the four corners and bound them with a new rect. This will not 695 // produce a correct result for some perspective matrices. 696 if (!this->getMatrix().hasPerspective()) { 697 if (!fViewMatrix.invert(&inverse)) { 698 GrPrintf("Could not invert matrix\n"); 699 return; 700 } 701 inverse.mapRect(&r); 702 } else { 703 if (!am.setIdentity(this, paint.writable())) { 704 GrPrintf("Could not invert matrix\n"); 705 return; 706 } 707 } 708 // by definition this fills the entire clip, no need for AA 709 if (paint->isAntiAlias()) { 710 paint.writable()->setAntiAlias(false); 711 } 712 this->drawRect(*paint, r); 713 } 714 715 #ifdef SK_DEVELOPER 716 void GrContext::dumpFontCache() const { 717 fFontCache->dump(); 718 } 719 #endif 720 721 //////////////////////////////////////////////////////////////////////////////// 722 723 /* create a triangle strip that strokes the specified triangle. There are 8 724 unique vertices, but we repreat the last 2 to close up. Alternatively we 725 could use an indices array, and then only send 8 verts, but not sure that 726 would be faster. 727 */ 728 static void setStrokeRectStrip(SkPoint verts[10], SkRect rect, 729 SkScalar width) { 730 const SkScalar rad = SkScalarHalf(width); 731 rect.sort(); 732 733 verts[0].set(rect.fLeft + rad, rect.fTop + rad); 734 verts[1].set(rect.fLeft - rad, rect.fTop - rad); 735 verts[2].set(rect.fRight - rad, rect.fTop + rad); 736 verts[3].set(rect.fRight + rad, rect.fTop - rad); 737 verts[4].set(rect.fRight - rad, rect.fBottom - rad); 738 verts[5].set(rect.fRight + rad, rect.fBottom + rad); 739 verts[6].set(rect.fLeft + rad, rect.fBottom - rad); 740 verts[7].set(rect.fLeft - rad, rect.fBottom + rad); 741 verts[8] = verts[0]; 742 verts[9] = verts[1]; 743 } 744 745 static inline bool is_irect(const SkRect& r) { 746 return SkScalarIsInt(r.fLeft) && SkScalarIsInt(r.fTop) && 747 SkScalarIsInt(r.fRight) && SkScalarIsInt(r.fBottom); 748 } 749 750 static bool apply_aa_to_rect(GrDrawTarget* target, 751 const SkRect& rect, 752 SkScalar strokeWidth, 753 const SkMatrix& combinedMatrix, 754 SkRect* devBoundRect) { 755 if (!target->getDrawState().canTweakAlphaForCoverage() && 756 target->shouldDisableCoverageAAForBlend()) { 757 #ifdef SK_DEBUG 758 //GrPrintf("Turning off AA to correctly apply blend.\n"); 759 #endif 760 return false; 761 } 762 const GrDrawState& drawState = target->getDrawState(); 763 if (drawState.getRenderTarget()->isMultisampled()) { 764 return false; 765 } 766 767 #if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT) 768 if (strokeWidth >= 0) { 769 #endif 770 if (!combinedMatrix.preservesAxisAlignment()) { 771 return false; 772 } 773 774 #if defined(SHADER_AA_FILL_RECT) || !defined(IGNORE_ROT_AA_RECT_OPT) 775 } else { 776 if (!combinedMatrix.preservesRightAngles()) { 777 return false; 778 } 779 } 780 #endif 781 782 combinedMatrix.mapRect(devBoundRect, rect); 783 if (strokeWidth < 0) { 784 return !is_irect(*devBoundRect); 785 } 786 787 return true; 788 } 789 790 static inline bool rect_contains_inclusive(const SkRect& rect, const SkPoint& point) { 791 return point.fX >= rect.fLeft && point.fX <= rect.fRight && 792 point.fY >= rect.fTop && point.fY <= rect.fBottom; 793 } 794 795 void GrContext::drawRect(const GrPaint& paint, 796 const SkRect& rect, 797 const GrStrokeInfo* strokeInfo) { 798 if (strokeInfo && strokeInfo->isDashed()) { 799 SkPath path; 800 path.addRect(rect); 801 this->drawPath(paint, path, *strokeInfo); 802 return; 803 } 804 805 AutoRestoreEffects are; 806 AutoCheckFlush acf(this); 807 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 808 if (NULL == target) { 809 return; 810 } 811 812 GR_CREATE_TRACE_MARKER("GrContext::drawRect", target); 813 SkScalar width = NULL == strokeInfo ? -1 : strokeInfo->getStrokeRec().getWidth(); 814 SkMatrix matrix = target->drawState()->getViewMatrix(); 815 816 // Check if this is a full RT draw and can be replaced with a clear. We don't bother checking 817 // cases where the RT is fully inside a stroke. 818 if (width < 0) { 819 SkRect rtRect; 820 target->getDrawState().getRenderTarget()->getBoundsRect(&rtRect); 821 SkRect clipSpaceRTRect = rtRect; 822 bool checkClip = false; 823 if (this->getClip()) { 824 checkClip = true; 825 clipSpaceRTRect.offset(SkIntToScalar(this->getClip()->fOrigin.fX), 826 SkIntToScalar(this->getClip()->fOrigin.fY)); 827 } 828 // Does the clip contain the entire RT? 829 if (!checkClip || target->getClip()->fClipStack->quickContains(clipSpaceRTRect)) { 830 SkMatrix invM; 831 if (!matrix.invert(&invM)) { 832 return; 833 } 834 // Does the rect bound the RT? 835 SkPoint srcSpaceRTQuad[4]; 836 invM.mapRectToQuad(srcSpaceRTQuad, rtRect); 837 if (rect_contains_inclusive(rect, srcSpaceRTQuad[0]) && 838 rect_contains_inclusive(rect, srcSpaceRTQuad[1]) && 839 rect_contains_inclusive(rect, srcSpaceRTQuad[2]) && 840 rect_contains_inclusive(rect, srcSpaceRTQuad[3])) { 841 // Will it blend? 842 GrColor clearColor; 843 if (paint.isOpaqueAndConstantColor(&clearColor)) { 844 target->clear(NULL, clearColor, true); 845 return; 846 } 847 } 848 } 849 } 850 851 SkRect devBoundRect; 852 bool needAA = paint.isAntiAlias() && 853 !target->getDrawState().getRenderTarget()->isMultisampled(); 854 bool doAA = needAA && apply_aa_to_rect(target, rect, width, matrix, &devBoundRect); 855 856 const SkStrokeRec& strokeRec = strokeInfo->getStrokeRec(); 857 858 if (doAA) { 859 GrDrawState::AutoViewMatrixRestore avmr; 860 if (!avmr.setIdentity(target->drawState())) { 861 return; 862 } 863 if (width >= 0) { 864 fAARectRenderer->strokeAARect(this->getGpu(), target, rect, 865 matrix, devBoundRect, 866 strokeRec); 867 } else { 868 // filled AA rect 869 fAARectRenderer->fillAARect(this->getGpu(), target, 870 rect, matrix, devBoundRect); 871 } 872 return; 873 } 874 875 if (width >= 0) { 876 // TODO: consider making static vertex buffers for these cases. 877 // Hairline could be done by just adding closing vertex to 878 // unitSquareVertexBuffer() 879 880 static const int worstCaseVertCount = 10; 881 target->drawState()->setDefaultVertexAttribs(); 882 GrDrawTarget::AutoReleaseGeometry geo(target, worstCaseVertCount, 0); 883 884 if (!geo.succeeded()) { 885 GrPrintf("Failed to get space for vertices!\n"); 886 return; 887 } 888 889 GrPrimitiveType primType; 890 int vertCount; 891 SkPoint* vertex = geo.positions(); 892 893 if (width > 0) { 894 vertCount = 10; 895 primType = kTriangleStrip_GrPrimitiveType; 896 setStrokeRectStrip(vertex, rect, width); 897 } else { 898 // hairline 899 vertCount = 5; 900 primType = kLineStrip_GrPrimitiveType; 901 vertex[0].set(rect.fLeft, rect.fTop); 902 vertex[1].set(rect.fRight, rect.fTop); 903 vertex[2].set(rect.fRight, rect.fBottom); 904 vertex[3].set(rect.fLeft, rect.fBottom); 905 vertex[4].set(rect.fLeft, rect.fTop); 906 } 907 908 target->drawNonIndexed(primType, 0, vertCount); 909 } else { 910 // filled BW rect 911 target->drawSimpleRect(rect); 912 } 913 } 914 915 void GrContext::drawRectToRect(const GrPaint& paint, 916 const SkRect& dstRect, 917 const SkRect& localRect, 918 const SkMatrix* localMatrix) { 919 AutoRestoreEffects are; 920 AutoCheckFlush acf(this); 921 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 922 if (NULL == target) { 923 return; 924 } 925 926 GR_CREATE_TRACE_MARKER("GrContext::drawRectToRect", target); 927 928 target->drawRect(dstRect, &localRect, localMatrix); 929 } 930 931 namespace { 932 933 extern const GrVertexAttrib gPosUVColorAttribs[] = { 934 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding }, 935 {kVec2f_GrVertexAttribType, sizeof(SkPoint), kLocalCoord_GrVertexAttribBinding }, 936 {kVec4ub_GrVertexAttribType, 2*sizeof(SkPoint), kColor_GrVertexAttribBinding} 937 }; 938 939 static const size_t kPosUVAttribsSize = 2 * sizeof(SkPoint); 940 static const size_t kPosUVColorAttribsSize = 2 * sizeof(SkPoint) + sizeof(GrColor); 941 942 extern const GrVertexAttrib gPosColorAttribs[] = { 943 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, 944 {kVec4ub_GrVertexAttribType, sizeof(SkPoint), kColor_GrVertexAttribBinding}, 945 }; 946 947 static const size_t kPosAttribsSize = sizeof(SkPoint); 948 static const size_t kPosColorAttribsSize = sizeof(SkPoint) + sizeof(GrColor); 949 950 static void set_vertex_attributes(GrDrawState* drawState, 951 const SkPoint* texCoords, 952 const GrColor* colors, 953 int* colorOffset, 954 int* texOffset) { 955 *texOffset = -1; 956 *colorOffset = -1; 957 958 if (texCoords && colors) { 959 *texOffset = sizeof(SkPoint); 960 *colorOffset = 2*sizeof(SkPoint); 961 drawState->setVertexAttribs<gPosUVColorAttribs>(3, kPosUVColorAttribsSize); 962 } else if (texCoords) { 963 *texOffset = sizeof(SkPoint); 964 drawState->setVertexAttribs<gPosUVColorAttribs>(2, kPosUVAttribsSize); 965 } else if (colors) { 966 *colorOffset = sizeof(SkPoint); 967 drawState->setVertexAttribs<gPosColorAttribs>(2, kPosColorAttribsSize); 968 } else { 969 drawState->setVertexAttribs<gPosColorAttribs>(1, kPosAttribsSize); 970 } 971 } 972 973 }; 974 975 void GrContext::drawVertices(const GrPaint& paint, 976 GrPrimitiveType primitiveType, 977 int vertexCount, 978 const SkPoint positions[], 979 const SkPoint texCoords[], 980 const GrColor colors[], 981 const uint16_t indices[], 982 int indexCount) { 983 AutoRestoreEffects are; 984 AutoCheckFlush acf(this); 985 GrDrawTarget::AutoReleaseGeometry geo; // must be inside AutoCheckFlush scope 986 987 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 988 if (NULL == target) { 989 return; 990 } 991 GrDrawState* drawState = target->drawState(); 992 993 GR_CREATE_TRACE_MARKER("GrContext::drawVertices", target); 994 995 int colorOffset = -1, texOffset = -1; 996 set_vertex_attributes(drawState, texCoords, colors, &colorOffset, &texOffset); 997 998 size_t VertexStride = drawState->getVertexStride(); 999 if (sizeof(SkPoint) != VertexStride) { 1000 if (!geo.set(target, vertexCount, 0)) { 1001 GrPrintf("Failed to get space for vertices!\n"); 1002 return; 1003 } 1004 void* curVertex = geo.vertices(); 1005 1006 for (int i = 0; i < vertexCount; ++i) { 1007 *((SkPoint*)curVertex) = positions[i]; 1008 1009 if (texOffset >= 0) { 1010 *(SkPoint*)((intptr_t)curVertex + texOffset) = texCoords[i]; 1011 } 1012 if (colorOffset >= 0) { 1013 *(GrColor*)((intptr_t)curVertex + colorOffset) = colors[i]; 1014 } 1015 curVertex = (void*)((intptr_t)curVertex + VertexStride); 1016 } 1017 } else { 1018 target->setVertexSourceToArray(positions, vertexCount); 1019 } 1020 1021 // we don't currently apply offscreen AA to this path. Need improved 1022 // management of GrDrawTarget's geometry to avoid copying points per-tile. 1023 1024 if (indices) { 1025 target->setIndexSourceToArray(indices, indexCount); 1026 target->drawIndexed(primitiveType, 0, 0, vertexCount, indexCount); 1027 target->resetIndexSource(); 1028 } else { 1029 target->drawNonIndexed(primitiveType, 0, vertexCount); 1030 } 1031 } 1032 1033 /////////////////////////////////////////////////////////////////////////////// 1034 1035 void GrContext::drawRRect(const GrPaint& paint, 1036 const SkRRect& rrect, 1037 const GrStrokeInfo& strokeInfo) { 1038 if (rrect.isEmpty()) { 1039 return; 1040 } 1041 1042 if (strokeInfo.isDashed()) { 1043 SkPath path; 1044 path.addRRect(rrect); 1045 this->drawPath(paint, path, strokeInfo); 1046 return; 1047 } 1048 1049 AutoRestoreEffects are; 1050 AutoCheckFlush acf(this); 1051 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 1052 if (NULL == target) { 1053 return; 1054 } 1055 1056 GR_CREATE_TRACE_MARKER("GrContext::drawRRect", target); 1057 1058 const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec(); 1059 1060 if (!fOvalRenderer->drawRRect(target, this, paint.isAntiAlias(), rrect, strokeRec)) { 1061 SkPath path; 1062 path.addRRect(rrect); 1063 this->internalDrawPath(target, paint.isAntiAlias(), path, strokeInfo); 1064 } 1065 } 1066 1067 /////////////////////////////////////////////////////////////////////////////// 1068 1069 void GrContext::drawDRRect(const GrPaint& paint, 1070 const SkRRect& outer, 1071 const SkRRect& inner) { 1072 if (outer.isEmpty()) { 1073 return; 1074 } 1075 1076 AutoRestoreEffects are; 1077 AutoCheckFlush acf(this); 1078 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 1079 1080 GR_CREATE_TRACE_MARKER("GrContext::drawDRRect", target); 1081 1082 if (!fOvalRenderer->drawDRRect(target, this, paint.isAntiAlias(), outer, inner)) { 1083 SkPath path; 1084 path.addRRect(inner); 1085 path.addRRect(outer); 1086 path.setFillType(SkPath::kEvenOdd_FillType); 1087 1088 GrStrokeInfo fillRec(SkStrokeRec::kFill_InitStyle); 1089 this->internalDrawPath(target, paint.isAntiAlias(), path, fillRec); 1090 } 1091 } 1092 1093 /////////////////////////////////////////////////////////////////////////////// 1094 1095 void GrContext::drawOval(const GrPaint& paint, 1096 const SkRect& oval, 1097 const GrStrokeInfo& strokeInfo) { 1098 if (oval.isEmpty()) { 1099 return; 1100 } 1101 1102 if (strokeInfo.isDashed()) { 1103 SkPath path; 1104 path.addOval(oval); 1105 this->drawPath(paint, path, strokeInfo); 1106 return; 1107 } 1108 1109 AutoRestoreEffects are; 1110 AutoCheckFlush acf(this); 1111 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 1112 if (NULL == target) { 1113 return; 1114 } 1115 1116 GR_CREATE_TRACE_MARKER("GrContext::drawOval", target); 1117 1118 const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec(); 1119 1120 1121 if (!fOvalRenderer->drawOval(target, this, paint.isAntiAlias(), oval, strokeRec)) { 1122 SkPath path; 1123 path.addOval(oval); 1124 this->internalDrawPath(target, paint.isAntiAlias(), path, strokeInfo); 1125 } 1126 } 1127 1128 // Can 'path' be drawn as a pair of filled nested rectangles? 1129 static bool is_nested_rects(GrDrawTarget* target, 1130 const SkPath& path, 1131 const SkStrokeRec& stroke, 1132 SkRect rects[2]) { 1133 SkASSERT(stroke.isFillStyle()); 1134 1135 if (path.isInverseFillType()) { 1136 return false; 1137 } 1138 1139 const GrDrawState& drawState = target->getDrawState(); 1140 1141 // TODO: this restriction could be lifted if we were willing to apply 1142 // the matrix to all the points individually rather than just to the rect 1143 if (!drawState.getViewMatrix().preservesAxisAlignment()) { 1144 return false; 1145 } 1146 1147 if (!target->getDrawState().canTweakAlphaForCoverage() && 1148 target->shouldDisableCoverageAAForBlend()) { 1149 return false; 1150 } 1151 1152 SkPath::Direction dirs[2]; 1153 if (!path.isNestedRects(rects, dirs)) { 1154 return false; 1155 } 1156 1157 if (SkPath::kWinding_FillType == path.getFillType() && dirs[0] == dirs[1]) { 1158 // The two rects need to be wound opposite to each other 1159 return false; 1160 } 1161 1162 // Right now, nested rects where the margin is not the same width 1163 // all around do not render correctly 1164 const SkScalar* outer = rects[0].asScalars(); 1165 const SkScalar* inner = rects[1].asScalars(); 1166 1167 SkScalar margin = SkScalarAbs(outer[0] - inner[0]); 1168 for (int i = 1; i < 4; ++i) { 1169 SkScalar temp = SkScalarAbs(outer[i] - inner[i]); 1170 if (!SkScalarNearlyEqual(margin, temp)) { 1171 return false; 1172 } 1173 } 1174 1175 return true; 1176 } 1177 1178 void GrContext::drawPath(const GrPaint& paint, const SkPath& path, const GrStrokeInfo& strokeInfo) { 1179 1180 if (path.isEmpty()) { 1181 if (path.isInverseFillType()) { 1182 this->drawPaint(paint); 1183 } 1184 return; 1185 } 1186 1187 if (strokeInfo.isDashed()) { 1188 SkPoint pts[2]; 1189 if (path.isLine(pts)) { 1190 AutoRestoreEffects are; 1191 AutoCheckFlush acf(this); 1192 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 1193 if (NULL == target) { 1194 return; 1195 } 1196 GrDrawState* drawState = target->drawState(); 1197 1198 SkMatrix origViewMatrix = drawState->getViewMatrix(); 1199 GrDrawState::AutoViewMatrixRestore avmr; 1200 if (avmr.setIdentity(target->drawState())) { 1201 if (GrDashingEffect::DrawDashLine(pts, paint, strokeInfo, fGpu, target, 1202 origViewMatrix)) { 1203 return; 1204 } 1205 } 1206 } 1207 1208 // Filter dashed path into new path with the dashing applied 1209 const SkPathEffect::DashInfo& info = strokeInfo.getDashInfo(); 1210 SkTLazy<SkPath> effectPath; 1211 GrStrokeInfo newStrokeInfo(strokeInfo, false); 1212 SkStrokeRec* stroke = newStrokeInfo.getStrokeRecPtr(); 1213 if (SkDashPath::FilterDashPath(effectPath.init(), path, stroke, NULL, info)) { 1214 this->drawPath(paint, *effectPath.get(), newStrokeInfo); 1215 return; 1216 } 1217 1218 this->drawPath(paint, path, newStrokeInfo); 1219 return; 1220 } 1221 1222 // Note that internalDrawPath may sw-rasterize the path into a scratch texture. 1223 // Scratch textures can be recycled after they are returned to the texture 1224 // cache. This presents a potential hazard for buffered drawing. However, 1225 // the writePixels that uploads to the scratch will perform a flush so we're 1226 // OK. 1227 AutoRestoreEffects are; 1228 AutoCheckFlush acf(this); 1229 GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf); 1230 if (NULL == target) { 1231 return; 1232 } 1233 GrDrawState* drawState = target->drawState(); 1234 1235 GR_CREATE_TRACE_MARKER1("GrContext::drawPath", target, "Is Convex", path.isConvex()); 1236 1237 const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec(); 1238 1239 bool useCoverageAA = paint.isAntiAlias() && !drawState->getRenderTarget()->isMultisampled(); 1240 1241 if (useCoverageAA && strokeRec.getWidth() < 0 && !path.isConvex()) { 1242 // Concave AA paths are expensive - try to avoid them for special cases 1243 SkRect rects[2]; 1244 1245 if (is_nested_rects(target, path, strokeRec, rects)) { 1246 SkMatrix origViewMatrix = drawState->getViewMatrix(); 1247 GrDrawState::AutoViewMatrixRestore avmr; 1248 if (!avmr.setIdentity(target->drawState())) { 1249 return; 1250 } 1251 1252 fAARectRenderer->fillAANestedRects(this->getGpu(), target, rects, origViewMatrix); 1253 return; 1254 } 1255 } 1256 1257 SkRect ovalRect; 1258 bool isOval = path.isOval(&ovalRect); 1259 1260 if (!isOval || path.isInverseFillType() 1261 || !fOvalRenderer->drawOval(target, this, paint.isAntiAlias(), ovalRect, strokeRec)) { 1262 this->internalDrawPath(target, paint.isAntiAlias(), path, strokeInfo); 1263 } 1264 } 1265 1266 void GrContext::internalDrawPath(GrDrawTarget* target, bool useAA, const SkPath& path, 1267 const GrStrokeInfo& strokeInfo) { 1268 SkASSERT(!path.isEmpty()); 1269 1270 GR_CREATE_TRACE_MARKER("GrContext::internalDrawPath", target); 1271 1272 1273 // An Assumption here is that path renderer would use some form of tweaking 1274 // the src color (either the input alpha or in the frag shader) to implement 1275 // aa. If we have some future driver-mojo path AA that can do the right 1276 // thing WRT to the blend then we'll need some query on the PR. 1277 bool useCoverageAA = useAA && 1278 !target->getDrawState().getRenderTarget()->isMultisampled() && 1279 !target->shouldDisableCoverageAAForBlend(); 1280 1281 1282 GrPathRendererChain::DrawType type = 1283 useCoverageAA ? GrPathRendererChain::kColorAntiAlias_DrawType : 1284 GrPathRendererChain::kColor_DrawType; 1285 1286 const SkPath* pathPtr = &path; 1287 SkTLazy<SkPath> tmpPath; 1288 SkTCopyOnFirstWrite<SkStrokeRec> stroke(strokeInfo.getStrokeRec()); 1289 1290 // Try a 1st time without stroking the path and without allowing the SW renderer 1291 GrPathRenderer* pr = this->getPathRenderer(*pathPtr, *stroke, target, false, type); 1292 1293 if (NULL == pr) { 1294 if (!GrPathRenderer::IsStrokeHairlineOrEquivalent(*stroke, this->getMatrix(), NULL)) { 1295 // It didn't work the 1st time, so try again with the stroked path 1296 if (stroke->applyToPath(tmpPath.init(), *pathPtr)) { 1297 pathPtr = tmpPath.get(); 1298 stroke.writable()->setFillStyle(); 1299 if (pathPtr->isEmpty()) { 1300 return; 1301 } 1302 } 1303 } 1304 1305 // This time, allow SW renderer 1306 pr = this->getPathRenderer(*pathPtr, *stroke, target, true, type); 1307 } 1308 1309 if (NULL == pr) { 1310 #ifdef SK_DEBUG 1311 GrPrintf("Unable to find path renderer compatible with path.\n"); 1312 #endif 1313 return; 1314 } 1315 1316 pr->drawPath(*pathPtr, *stroke, target, useCoverageAA); 1317 } 1318 1319 //////////////////////////////////////////////////////////////////////////////// 1320 1321 void GrContext::flush(int flagsBitfield) { 1322 if (NULL == fDrawBuffer) { 1323 return; 1324 } 1325 1326 if (kDiscard_FlushBit & flagsBitfield) { 1327 fDrawBuffer->reset(); 1328 } else { 1329 fDrawBuffer->flush(); 1330 } 1331 fFlushToReduceCacheSize = false; 1332 } 1333 1334 bool GrContext::writeTexturePixels(GrTexture* texture, 1335 int left, int top, int width, int height, 1336 GrPixelConfig config, const void* buffer, size_t rowBytes, 1337 uint32_t flags) { 1338 ASSERT_OWNED_RESOURCE(texture); 1339 1340 if ((kUnpremul_PixelOpsFlag & flags) || !fGpu->canWriteTexturePixels(texture, config)) { 1341 if (texture->asRenderTarget()) { 1342 return this->writeRenderTargetPixels(texture->asRenderTarget(), 1343 left, top, width, height, 1344 config, buffer, rowBytes, flags); 1345 } else { 1346 return false; 1347 } 1348 } 1349 1350 if (!(kDontFlush_PixelOpsFlag & flags) && texture->hasPendingIO()) { 1351 this->flush(); 1352 } 1353 1354 return fGpu->writeTexturePixels(texture, left, top, width, height, 1355 config, buffer, rowBytes); 1356 } 1357 1358 bool GrContext::readTexturePixels(GrTexture* texture, 1359 int left, int top, int width, int height, 1360 GrPixelConfig config, void* buffer, size_t rowBytes, 1361 uint32_t flags) { 1362 ASSERT_OWNED_RESOURCE(texture); 1363 1364 GrRenderTarget* target = texture->asRenderTarget(); 1365 if (target) { 1366 return this->readRenderTargetPixels(target, 1367 left, top, width, height, 1368 config, buffer, rowBytes, 1369 flags); 1370 } else { 1371 // TODO: make this more efficient for cases where we're reading the entire 1372 // texture, i.e., use GetTexImage() instead 1373 1374 // create scratch rendertarget and read from that 1375 GrAutoScratchTexture ast; 1376 GrTextureDesc desc; 1377 desc.fFlags = kRenderTarget_GrTextureFlagBit; 1378 desc.fWidth = width; 1379 desc.fHeight = height; 1380 desc.fConfig = config; 1381 desc.fOrigin = kTopLeft_GrSurfaceOrigin; 1382 ast.set(this, desc, kExact_ScratchTexMatch); 1383 GrTexture* dst = ast.texture(); 1384 if (dst && (target = dst->asRenderTarget())) { 1385 this->copyTexture(texture, target, NULL); 1386 return this->readRenderTargetPixels(target, 1387 left, top, width, height, 1388 config, buffer, rowBytes, 1389 flags); 1390 } 1391 1392 return false; 1393 } 1394 } 1395 1396 #include "SkConfig8888.h" 1397 1398 // toggles between RGBA and BGRA 1399 static SkColorType toggle_colortype32(SkColorType ct) { 1400 if (kRGBA_8888_SkColorType == ct) { 1401 return kBGRA_8888_SkColorType; 1402 } else { 1403 SkASSERT(kBGRA_8888_SkColorType == ct); 1404 return kRGBA_8888_SkColorType; 1405 } 1406 } 1407 1408 bool GrContext::readRenderTargetPixels(GrRenderTarget* target, 1409 int left, int top, int width, int height, 1410 GrPixelConfig dstConfig, void* buffer, size_t rowBytes, 1411 uint32_t flags) { 1412 ASSERT_OWNED_RESOURCE(target); 1413 1414 if (NULL == target) { 1415 target = fRenderTarget.get(); 1416 if (NULL == target) { 1417 return false; 1418 } 1419 } 1420 1421 if (!(kDontFlush_PixelOpsFlag & flags) && target->hasPendingWrite()) { 1422 this->flush(); 1423 } 1424 1425 // Determine which conversions have to be applied: flipY, swapRAnd, and/or unpremul. 1426 1427 // If fGpu->readPixels would incur a y-flip cost then we will read the pixels upside down. We'll 1428 // either do the flipY by drawing into a scratch with a matrix or on the cpu after the read. 1429 bool flipY = fGpu->readPixelsWillPayForYFlip(target, left, top, 1430 width, height, dstConfig, 1431 rowBytes); 1432 // We ignore the preferred config if it is different than our config unless it is an R/B swap. 1433 // In that case we'll perform an R and B swap while drawing to a scratch texture of the swapped 1434 // config. Then we will call readPixels on the scratch with the swapped config. The swaps during 1435 // the draw cancels out the fact that we call readPixels with a config that is R/B swapped from 1436 // dstConfig. 1437 GrPixelConfig readConfig = dstConfig; 1438 bool swapRAndB = false; 1439 if (GrPixelConfigSwapRAndB(dstConfig) == 1440 fGpu->preferredReadPixelsConfig(dstConfig, target->config())) { 1441 readConfig = GrPixelConfigSwapRAndB(readConfig); 1442 swapRAndB = true; 1443 } 1444 1445 bool unpremul = SkToBool(kUnpremul_PixelOpsFlag & flags); 1446 1447 if (unpremul && !GrPixelConfigIs8888(dstConfig)) { 1448 // The unpremul flag is only allowed for these two configs. 1449 return false; 1450 } 1451 1452 // If the src is a texture and we would have to do conversions after read pixels, we instead 1453 // do the conversions by drawing the src to a scratch texture. If we handle any of the 1454 // conversions in the draw we set the corresponding bool to false so that we don't reapply it 1455 // on the read back pixels. 1456 GrTexture* src = target->asTexture(); 1457 GrAutoScratchTexture ast; 1458 if (src && (swapRAndB || unpremul || flipY)) { 1459 // Make the scratch a render target because we don't have a robust readTexturePixels as of 1460 // yet. It calls this function. 1461 GrTextureDesc desc; 1462 desc.fFlags = kRenderTarget_GrTextureFlagBit; 1463 desc.fWidth = width; 1464 desc.fHeight = height; 1465 desc.fConfig = readConfig; 1466 desc.fOrigin = kTopLeft_GrSurfaceOrigin; 1467 1468 // When a full read back is faster than a partial we could always make the scratch exactly 1469 // match the passed rect. However, if we see many different size rectangles we will trash 1470 // our texture cache and pay the cost of creating and destroying many textures. So, we only 1471 // request an exact match when the caller is reading an entire RT. 1472 ScratchTexMatch match = kApprox_ScratchTexMatch; 1473 if (0 == left && 1474 0 == top && 1475 target->width() == width && 1476 target->height() == height && 1477 fGpu->fullReadPixelsIsFasterThanPartial()) { 1478 match = kExact_ScratchTexMatch; 1479 } 1480 ast.set(this, desc, match); 1481 GrTexture* texture = ast.texture(); 1482 if (texture) { 1483 // compute a matrix to perform the draw 1484 SkMatrix textureMatrix; 1485 textureMatrix.setTranslate(SK_Scalar1 *left, SK_Scalar1 *top); 1486 textureMatrix.postIDiv(src->width(), src->height()); 1487 1488 SkAutoTUnref<const GrFragmentProcessor> fp; 1489 if (unpremul) { 1490 fp.reset(this->createPMToUPMEffect(src, swapRAndB, textureMatrix)); 1491 if (fp) { 1492 unpremul = false; // we no longer need to do this on CPU after the read back. 1493 } 1494 } 1495 // If we failed to create a PM->UPM effect and have no other conversions to perform then 1496 // there is no longer any point to using the scratch. 1497 if (fp || flipY || swapRAndB) { 1498 if (!fp) { 1499 fp.reset(GrConfigConversionEffect::Create( 1500 src, swapRAndB, GrConfigConversionEffect::kNone_PMConversion, 1501 textureMatrix)); 1502 } 1503 swapRAndB = false; // we will handle the swap in the draw. 1504 1505 // We protect the existing geometry here since it may not be 1506 // clear to the caller that a draw operation (i.e., drawSimpleRect) 1507 // can be invoked in this method 1508 GrDrawTarget::AutoGeometryAndStatePush agasp(fGpu, GrDrawTarget::kReset_ASRInit); 1509 GrDrawState* drawState = fGpu->drawState(); 1510 SkASSERT(fp); 1511 drawState->addColorProcessor(fp); 1512 1513 drawState->setRenderTarget(texture->asRenderTarget()); 1514 SkRect rect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)); 1515 fGpu->drawSimpleRect(rect); 1516 // we want to read back from the scratch's origin 1517 left = 0; 1518 top = 0; 1519 target = texture->asRenderTarget(); 1520 } 1521 } 1522 } 1523 if (!fGpu->readPixels(target, 1524 left, top, width, height, 1525 readConfig, buffer, rowBytes)) { 1526 return false; 1527 } 1528 // Perform any conversions we weren't able to perform using a scratch texture. 1529 if (unpremul || swapRAndB) { 1530 SkDstPixelInfo dstPI; 1531 if (!GrPixelConfig2ColorType(dstConfig, &dstPI.fColorType)) { 1532 return false; 1533 } 1534 dstPI.fAlphaType = kUnpremul_SkAlphaType; 1535 dstPI.fPixels = buffer; 1536 dstPI.fRowBytes = rowBytes; 1537 1538 SkSrcPixelInfo srcPI; 1539 srcPI.fColorType = swapRAndB ? toggle_colortype32(dstPI.fColorType) : dstPI.fColorType; 1540 srcPI.fAlphaType = kPremul_SkAlphaType; 1541 srcPI.fPixels = buffer; 1542 srcPI.fRowBytes = rowBytes; 1543 1544 return srcPI.convertPixelsTo(&dstPI, width, height); 1545 } 1546 return true; 1547 } 1548 1549 void GrContext::resolveRenderTarget(GrRenderTarget* target) { 1550 SkASSERT(target); 1551 ASSERT_OWNED_RESOURCE(target); 1552 // In the future we may track whether there are any pending draws to this 1553 // target. We don't today so we always perform a flush. We don't promise 1554 // this to our clients, though. 1555 this->flush(); 1556 if (fGpu) { 1557 fGpu->resolveRenderTarget(target); 1558 } 1559 } 1560 1561 void GrContext::discardRenderTarget(GrRenderTarget* renderTarget) { 1562 SkASSERT(renderTarget); 1563 ASSERT_OWNED_RESOURCE(renderTarget); 1564 AutoRestoreEffects are; 1565 AutoCheckFlush acf(this); 1566 GrDrawTarget* target = this->prepareToDraw(NULL, BUFFERED_DRAW, &are, &acf); 1567 if (NULL == target) { 1568 return; 1569 } 1570 target->discard(renderTarget); 1571 } 1572 1573 void GrContext::copyTexture(GrTexture* src, GrRenderTarget* dst, const SkIPoint* topLeft) { 1574 if (NULL == src || NULL == dst) { 1575 return; 1576 } 1577 ASSERT_OWNED_RESOURCE(src); 1578 1579 SkIRect srcRect = SkIRect::MakeWH(dst->width(), dst->height()); 1580 if (topLeft) { 1581 srcRect.offset(*topLeft); 1582 } 1583 SkIRect srcBounds = SkIRect::MakeWH(src->width(), src->height()); 1584 if (!srcRect.intersect(srcBounds)) { 1585 return; 1586 } 1587 1588 GrDrawTarget* target = this->prepareToDraw(NULL, BUFFERED_DRAW, NULL, NULL); 1589 if (NULL == target) { 1590 return; 1591 } 1592 SkIPoint dstPoint; 1593 dstPoint.setZero(); 1594 target->copySurface(dst, src, srcRect, dstPoint); 1595 } 1596 1597 bool GrContext::writeRenderTargetPixels(GrRenderTarget* target, 1598 int left, int top, int width, int height, 1599 GrPixelConfig srcConfig, 1600 const void* buffer, 1601 size_t rowBytes, 1602 uint32_t flags) { 1603 ASSERT_OWNED_RESOURCE(target); 1604 1605 if (NULL == target) { 1606 target = fRenderTarget.get(); 1607 if (NULL == target) { 1608 return false; 1609 } 1610 } 1611 1612 // TODO: when underlying api has a direct way to do this we should use it (e.g. glDrawPixels on 1613 // desktop GL). 1614 1615 // We will always call some form of writeTexturePixels and we will pass our flags on to it. 1616 // Thus, we don't perform a flush here since that call will do it (if the kNoFlush flag isn't 1617 // set.) 1618 1619 // If the RT is also a texture and we don't have to premultiply then take the texture path. 1620 // We expect to be at least as fast or faster since it doesn't use an intermediate texture as 1621 // we do below. 1622 1623 #if !defined(SK_BUILD_FOR_MAC) 1624 // At least some drivers on the Mac get confused when glTexImage2D is called on a texture 1625 // attached to an FBO. The FBO still sees the old image. TODO: determine what OS versions and/or 1626 // HW is affected. 1627 if (target->asTexture() && !(kUnpremul_PixelOpsFlag & flags) && 1628 fGpu->canWriteTexturePixels(target->asTexture(), srcConfig)) { 1629 return this->writeTexturePixels(target->asTexture(), 1630 left, top, width, height, 1631 srcConfig, buffer, rowBytes, flags); 1632 } 1633 #endif 1634 1635 // We ignore the preferred config unless it is a R/B swap of the src config. In that case 1636 // we will upload the original src data to a scratch texture but we will spoof it as the swapped 1637 // config. This scratch will then have R and B swapped. We correct for this by swapping again 1638 // when drawing the scratch to the dst using a conversion effect. 1639 bool swapRAndB = false; 1640 GrPixelConfig writeConfig = srcConfig; 1641 if (GrPixelConfigSwapRAndB(srcConfig) == 1642 fGpu->preferredWritePixelsConfig(srcConfig, target->config())) { 1643 writeConfig = GrPixelConfigSwapRAndB(srcConfig); 1644 swapRAndB = true; 1645 } 1646 1647 GrTextureDesc desc; 1648 desc.fWidth = width; 1649 desc.fHeight = height; 1650 desc.fConfig = writeConfig; 1651 GrAutoScratchTexture ast(this, desc); 1652 GrTexture* texture = ast.texture(); 1653 if (NULL == texture) { 1654 return false; 1655 } 1656 1657 SkAutoTUnref<const GrFragmentProcessor> fp; 1658 SkMatrix textureMatrix; 1659 textureMatrix.setIDiv(texture->width(), texture->height()); 1660 1661 // allocate a tmp buffer and sw convert the pixels to premul 1662 SkAutoSTMalloc<128 * 128, uint32_t> tmpPixels(0); 1663 1664 if (kUnpremul_PixelOpsFlag & flags) { 1665 if (!GrPixelConfigIs8888(srcConfig)) { 1666 return false; 1667 } 1668 fp.reset(this->createUPMToPMEffect(texture, swapRAndB, textureMatrix)); 1669 // handle the unpremul step on the CPU if we couldn't create an effect to do it. 1670 if (NULL == fp) { 1671 SkSrcPixelInfo srcPI; 1672 if (!GrPixelConfig2ColorType(srcConfig, &srcPI.fColorType)) { 1673 return false; 1674 } 1675 srcPI.fAlphaType = kUnpremul_SkAlphaType; 1676 srcPI.fPixels = buffer; 1677 srcPI.fRowBytes = rowBytes; 1678 1679 tmpPixels.reset(width * height); 1680 1681 SkDstPixelInfo dstPI; 1682 dstPI.fColorType = srcPI.fColorType; 1683 dstPI.fAlphaType = kPremul_SkAlphaType; 1684 dstPI.fPixels = tmpPixels.get(); 1685 dstPI.fRowBytes = 4 * width; 1686 1687 if (!srcPI.convertPixelsTo(&dstPI, width, height)) { 1688 return false; 1689 } 1690 1691 buffer = tmpPixels.get(); 1692 rowBytes = 4 * width; 1693 } 1694 } 1695 if (NULL == fp) { 1696 fp.reset(GrConfigConversionEffect::Create(texture, 1697 swapRAndB, 1698 GrConfigConversionEffect::kNone_PMConversion, 1699 textureMatrix)); 1700 } 1701 1702 if (!this->writeTexturePixels(texture, 1703 0, 0, width, height, 1704 writeConfig, buffer, rowBytes, 1705 flags & ~kUnpremul_PixelOpsFlag)) { 1706 return false; 1707 } 1708 1709 // TODO: Usually this could go to fDrawBuffer but currently 1710 // writeRenderTargetPixels can be called in the midst of drawing another 1711 // object (e.g., when uploading a SW path rendering to the gpu while 1712 // drawing a rect). So we always draw directly to GrGpu and preserve the current geometry. 1713 // But that means we also have to flush the draw buffer if there is a pending IO operation to 1714 // the render target. 1715 if (!(kDontFlush_PixelOpsFlag & flags) && target->hasPendingIO()) { 1716 this->flush(); 1717 } 1718 SkMatrix matrix; 1719 matrix.setTranslate(SkIntToScalar(left), SkIntToScalar(top)); 1720 GrDrawTarget::AutoGeometryAndStatePush agasp(fGpu, GrDrawTarget::kReset_ASRInit, &matrix); 1721 GrDrawState* drawState = fGpu->drawState(); 1722 SkASSERT(fp); 1723 drawState->addColorProcessor(fp); 1724 1725 drawState->setRenderTarget(target); 1726 1727 fGpu->drawSimpleRect(SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height))); 1728 return true; 1729 } 1730 //////////////////////////////////////////////////////////////////////////////// 1731 1732 GrDrawTarget* GrContext::prepareToDraw(const GrPaint* paint, 1733 BufferedDraw buffered, 1734 AutoRestoreEffects* are, 1735 AutoCheckFlush* acf) { 1736 // All users of this draw state should be freeing up all effects when they're done. 1737 // Otherwise effects that own resources may keep those resources alive indefinitely. 1738 SkASSERT(0 == fDrawState->numColorStages() && 0 == fDrawState->numCoverageStages() && 1739 !fDrawState->hasGeometryProcessor()); 1740 1741 if (NULL == fGpu) { 1742 return NULL; 1743 } 1744 1745 if (kNo_BufferedDraw == buffered && kYes_BufferedDraw == fLastDrawWasBuffered) { 1746 fDrawBuffer->flush(); 1747 fLastDrawWasBuffered = kNo_BufferedDraw; 1748 } 1749 ASSERT_OWNED_RESOURCE(fRenderTarget.get()); 1750 if (paint) { 1751 SkASSERT(are); 1752 SkASSERT(acf); 1753 are->set(fDrawState); 1754 fDrawState->setFromPaint(*paint, fViewMatrix, fRenderTarget.get()); 1755 #if GR_DEBUG_PARTIAL_COVERAGE_CHECK 1756 if ((paint->hasMask() || 0xff != paint->fCoverage) && 1757 !fDrawState->couldApplyCoverage(fGpu->caps())) { 1758 GrPrintf("Partial pixel coverage will be incorrectly blended.\n"); 1759 } 1760 #endif 1761 // Clear any vertex attributes configured for the previous use of the 1762 // GrDrawState which can effect which blend optimizations are in effect. 1763 fDrawState->setDefaultVertexAttribs(); 1764 } else { 1765 fDrawState->reset(fViewMatrix); 1766 fDrawState->setRenderTarget(fRenderTarget.get()); 1767 } 1768 GrDrawTarget* target; 1769 if (kYes_BufferedDraw == buffered) { 1770 fLastDrawWasBuffered = kYes_BufferedDraw; 1771 target = fDrawBuffer; 1772 } else { 1773 SkASSERT(kNo_BufferedDraw == buffered); 1774 fLastDrawWasBuffered = kNo_BufferedDraw; 1775 target = fGpu; 1776 } 1777 fDrawState->setState(GrDrawState::kClip_StateBit, fClip && 1778 !fClip->fClipStack->isWideOpen()); 1779 target->setClip(fClip); 1780 SkASSERT(fDrawState == target->drawState()); 1781 return target; 1782 } 1783 1784 /* 1785 * This method finds a path renderer that can draw the specified path on 1786 * the provided target. 1787 * Due to its expense, the software path renderer has split out so it can 1788 * can be individually allowed/disallowed via the "allowSW" boolean. 1789 */ 1790 GrPathRenderer* GrContext::getPathRenderer(const SkPath& path, 1791 const SkStrokeRec& stroke, 1792 const GrDrawTarget* target, 1793 bool allowSW, 1794 GrPathRendererChain::DrawType drawType, 1795 GrPathRendererChain::StencilSupport* stencilSupport) { 1796 1797 if (NULL == fPathRendererChain) { 1798 fPathRendererChain = SkNEW_ARGS(GrPathRendererChain, (this)); 1799 } 1800 1801 GrPathRenderer* pr = fPathRendererChain->getPathRenderer(path, 1802 stroke, 1803 target, 1804 drawType, 1805 stencilSupport); 1806 1807 if (NULL == pr && allowSW) { 1808 if (NULL == fSoftwarePathRenderer) { 1809 fSoftwarePathRenderer = SkNEW_ARGS(GrSoftwarePathRenderer, (this)); 1810 } 1811 pr = fSoftwarePathRenderer; 1812 } 1813 1814 return pr; 1815 } 1816 1817 //////////////////////////////////////////////////////////////////////////////// 1818 bool GrContext::isConfigRenderable(GrPixelConfig config, bool withMSAA) const { 1819 return fGpu->caps()->isConfigRenderable(config, withMSAA); 1820 } 1821 1822 int GrContext::getRecommendedSampleCount(GrPixelConfig config, 1823 SkScalar dpi) const { 1824 if (!this->isConfigRenderable(config, true)) { 1825 return 0; 1826 } 1827 int chosenSampleCount = 0; 1828 if (fGpu->caps()->pathRenderingSupport()) { 1829 if (dpi >= 250.0f) { 1830 chosenSampleCount = 4; 1831 } else { 1832 chosenSampleCount = 16; 1833 } 1834 } 1835 return chosenSampleCount <= fGpu->caps()->maxSampleCount() ? 1836 chosenSampleCount : 0; 1837 } 1838 1839 void GrContext::setupDrawBuffer() { 1840 SkASSERT(NULL == fDrawBuffer); 1841 SkASSERT(NULL == fDrawBufferVBAllocPool); 1842 SkASSERT(NULL == fDrawBufferIBAllocPool); 1843 1844 fDrawBufferVBAllocPool = 1845 SkNEW_ARGS(GrVertexBufferAllocPool, (fGpu, false, 1846 DRAW_BUFFER_VBPOOL_BUFFER_SIZE, 1847 DRAW_BUFFER_VBPOOL_PREALLOC_BUFFERS)); 1848 fDrawBufferIBAllocPool = 1849 SkNEW_ARGS(GrIndexBufferAllocPool, (fGpu, false, 1850 DRAW_BUFFER_IBPOOL_BUFFER_SIZE, 1851 DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS)); 1852 1853 fDrawBuffer = SkNEW_ARGS(GrInOrderDrawBuffer, (fGpu, 1854 fDrawBufferVBAllocPool, 1855 fDrawBufferIBAllocPool)); 1856 1857 fDrawBuffer->setDrawState(fDrawState); 1858 } 1859 1860 GrDrawTarget* GrContext::getTextTarget() { 1861 return this->prepareToDraw(NULL, BUFFERED_DRAW, NULL, NULL); 1862 } 1863 1864 const GrIndexBuffer* GrContext::getQuadIndexBuffer() const { 1865 return fGpu->getQuadIndexBuffer(); 1866 } 1867 1868 namespace { 1869 void test_pm_conversions(GrContext* ctx, int* pmToUPMValue, int* upmToPMValue) { 1870 GrConfigConversionEffect::PMConversion pmToUPM; 1871 GrConfigConversionEffect::PMConversion upmToPM; 1872 GrConfigConversionEffect::TestForPreservingPMConversions(ctx, &pmToUPM, &upmToPM); 1873 *pmToUPMValue = pmToUPM; 1874 *upmToPMValue = upmToPM; 1875 } 1876 } 1877 1878 const GrFragmentProcessor* GrContext::createPMToUPMEffect(GrTexture* texture, 1879 bool swapRAndB, 1880 const SkMatrix& matrix) { 1881 if (!fDidTestPMConversions) { 1882 test_pm_conversions(this, &fPMToUPMConversion, &fUPMToPMConversion); 1883 fDidTestPMConversions = true; 1884 } 1885 GrConfigConversionEffect::PMConversion pmToUPM = 1886 static_cast<GrConfigConversionEffect::PMConversion>(fPMToUPMConversion); 1887 if (GrConfigConversionEffect::kNone_PMConversion != pmToUPM) { 1888 return GrConfigConversionEffect::Create(texture, swapRAndB, pmToUPM, matrix); 1889 } else { 1890 return NULL; 1891 } 1892 } 1893 1894 const GrFragmentProcessor* GrContext::createUPMToPMEffect(GrTexture* texture, 1895 bool swapRAndB, 1896 const SkMatrix& matrix) { 1897 if (!fDidTestPMConversions) { 1898 test_pm_conversions(this, &fPMToUPMConversion, &fUPMToPMConversion); 1899 fDidTestPMConversions = true; 1900 } 1901 GrConfigConversionEffect::PMConversion upmToPM = 1902 static_cast<GrConfigConversionEffect::PMConversion>(fUPMToPMConversion); 1903 if (GrConfigConversionEffect::kNone_PMConversion != upmToPM) { 1904 return GrConfigConversionEffect::Create(texture, swapRAndB, upmToPM, matrix); 1905 } else { 1906 return NULL; 1907 } 1908 } 1909 1910 void GrContext::addResourceToCache(const GrResourceKey& resourceKey, GrGpuResource* resource) { 1911 fResourceCache->purgeAsNeeded(1, resource->gpuMemorySize()); 1912 fResourceCache->addResource(resourceKey, resource); 1913 } 1914 1915 GrGpuResource* GrContext::findAndRefCachedResource(const GrResourceKey& resourceKey) { 1916 GrGpuResource* resource = fResourceCache->find(resourceKey); 1917 SkSafeRef(resource); 1918 return resource; 1919 } 1920 1921 void GrContext::addGpuTraceMarker(const GrGpuTraceMarker* marker) { 1922 fGpu->addGpuTraceMarker(marker); 1923 if (fDrawBuffer) { 1924 fDrawBuffer->addGpuTraceMarker(marker); 1925 } 1926 } 1927 1928 void GrContext::removeGpuTraceMarker(const GrGpuTraceMarker* marker) { 1929 fGpu->removeGpuTraceMarker(marker); 1930 if (fDrawBuffer) { 1931 fDrawBuffer->removeGpuTraceMarker(marker); 1932 } 1933 } 1934 1935 /////////////////////////////////////////////////////////////////////////////// 1936 #if GR_CACHE_STATS 1937 void GrContext::printCacheStats() const { 1938 fResourceCache->printStats(); 1939 } 1940 #endif 1941 1942 #if GR_GPU_STATS 1943 const GrContext::GPUStats* GrContext::gpuStats() const { 1944 return fGpu->gpuStats(); 1945 } 1946 #endif 1947 1948
