| |
| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrDrawTarget.h" |
| |
| #include "GrAuditTrail.h" |
| #include "GrCaps.h" |
| #include "GrGpu.h" |
| #include "GrPath.h" |
| #include "GrPipeline.h" |
| #include "GrMemoryPool.h" |
| #include "GrRenderTarget.h" |
| #include "GrResourceProvider.h" |
| #include "GrRenderTargetPriv.h" |
| #include "GrSurfacePriv.h" |
| #include "GrTexture.h" |
| #include "GrVertexBuffer.h" |
| #include "gl/GrGLRenderTarget.h" |
| |
| #include "SkStrokeRec.h" |
| |
| #include "batches/GrClearBatch.h" |
| #include "batches/GrCopySurfaceBatch.h" |
| #include "batches/GrDiscardBatch.h" |
| #include "batches/GrDrawBatch.h" |
| #include "batches/GrDrawPathBatch.h" |
| #include "batches/GrRectBatchFactory.h" |
| #include "batches/GrStencilPathBatch.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Experimentally we have found that most batching occurs within the first 10 comparisons. |
| static const int kDefaultMaxBatchLookback = 10; |
| |
| GrDrawTarget::GrDrawTarget(GrRenderTarget* rt, GrGpu* gpu, GrResourceProvider* resourceProvider, |
| GrAuditTrail* auditTrail, const Options& options) |
| : fGpu(SkRef(gpu)) |
| , fResourceProvider(resourceProvider) |
| , fAuditTrail(auditTrail) |
| , fFlags(0) |
| , fRenderTarget(rt) { |
| // TODO: Stop extracting the context (currently needed by GrClipMaskManager) |
| fContext = fGpu->getContext(); |
| fClipMaskManager.reset(new GrClipMaskManager(this, options.fClipBatchToBounds)); |
| |
| fDrawBatchBounds = options.fDrawBatchBounds; |
| fMaxBatchLookback = (options.fMaxBatchLookback < 0) ? kDefaultMaxBatchLookback : |
| options.fMaxBatchLookback; |
| |
| rt->setLastDrawTarget(this); |
| |
| #ifdef SK_DEBUG |
| static int debugID = 0; |
| fDebugID = debugID++; |
| #endif |
| } |
| |
| GrDrawTarget::~GrDrawTarget() { |
| if (fRenderTarget && this == fRenderTarget->getLastDrawTarget()) { |
| fRenderTarget->setLastDrawTarget(nullptr); |
| } |
| |
| fGpu->unref(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // Add a GrDrawTarget-based dependency |
| void GrDrawTarget::addDependency(GrDrawTarget* dependedOn) { |
| SkASSERT(!dependedOn->dependsOn(this)); // loops are bad |
| |
| if (this->dependsOn(dependedOn)) { |
| return; // don't add duplicate dependencies |
| } |
| |
| *fDependencies.push() = dependedOn; |
| } |
| |
| // Convert from a GrSurface-based dependency to a GrDrawTarget one |
| void GrDrawTarget::addDependency(GrSurface* dependedOn) { |
| if (dependedOn->asRenderTarget() && dependedOn->asRenderTarget()->getLastDrawTarget()) { |
| // If it is still receiving dependencies, this DT shouldn't be closed |
| SkASSERT(!this->isClosed()); |
| |
| GrDrawTarget* dt = dependedOn->asRenderTarget()->getLastDrawTarget(); |
| if (dt == this) { |
| // self-read - presumably for dst reads |
| } else { |
| this->addDependency(dt); |
| |
| // Can't make it closed in the self-read case |
| dt->makeClosed(); |
| } |
| } |
| } |
| |
| #ifdef SK_DEBUG |
| void GrDrawTarget::dump() const { |
| SkDebugf("--------------------------------------------------------------\n"); |
| SkDebugf("node: %d -> RT: %d\n", fDebugID, fRenderTarget ? fRenderTarget->getUniqueID() : -1); |
| SkDebugf("relies On (%d): ", fDependencies.count()); |
| for (int i = 0; i < fDependencies.count(); ++i) { |
| SkDebugf("%d, ", fDependencies[i]->fDebugID); |
| } |
| SkDebugf("\n"); |
| SkDebugf("batches (%d):\n", fBatches.count()); |
| for (int i = 0; i < fBatches.count(); ++i) { |
| #if 0 |
| SkDebugf("*******************************\n"); |
| #endif |
| SkDebugf("%d: %s\n", i, fBatches[i]->name()); |
| #if 0 |
| SkString str = fBatches[i]->dumpInfo(); |
| SkDebugf("%s\n", str.c_str()); |
| #endif |
| } |
| } |
| #endif |
| |
| bool GrDrawTarget::setupDstReadIfNecessary(const GrPipelineBuilder& pipelineBuilder, |
| const GrPipelineOptimizations& optimizations, |
| GrXferProcessor::DstTexture* dstTexture, |
| const SkRect& batchBounds) { |
| SkRect bounds = batchBounds; |
| bounds.outset(0.5f, 0.5f); |
| |
| if (!pipelineBuilder.willXPNeedDstTexture(*this->caps(), optimizations)) { |
| return true; |
| } |
| |
| GrRenderTarget* rt = pipelineBuilder.getRenderTarget(); |
| |
| if (this->caps()->textureBarrierSupport()) { |
| if (GrTexture* rtTex = rt->asTexture()) { |
| // The render target is a texture, so we can read from it directly in the shader. The XP |
| // will be responsible to detect this situation and request a texture barrier. |
| dstTexture->setTexture(rtTex); |
| dstTexture->setOffset(0, 0); |
| return true; |
| } |
| } |
| |
| SkIRect copyRect; |
| pipelineBuilder.clip().getConservativeBounds(rt->width(), rt->height(), ©Rect); |
| |
| SkIRect drawIBounds; |
| bounds.roundOut(&drawIBounds); |
| if (!copyRect.intersect(drawIBounds)) { |
| #ifdef SK_DEBUG |
| GrCapsDebugf(this->caps(), "Missed an early reject. " |
| "Bailing on draw from setupDstReadIfNecessary.\n"); |
| #endif |
| return false; |
| } |
| |
| // MSAA consideration: When there is support for reading MSAA samples in the shader we could |
| // have per-sample dst values by making the copy multisampled. |
| GrSurfaceDesc desc; |
| if (!fGpu->initCopySurfaceDstDesc(rt, &desc)) { |
| desc.fOrigin = kDefault_GrSurfaceOrigin; |
| desc.fFlags = kRenderTarget_GrSurfaceFlag; |
| desc.fConfig = rt->config(); |
| } |
| |
| desc.fWidth = copyRect.width(); |
| desc.fHeight = copyRect.height(); |
| |
| static const uint32_t kFlags = 0; |
| SkAutoTUnref<GrTexture> copy(fResourceProvider->createApproxTexture(desc, kFlags)); |
| |
| if (!copy) { |
| SkDebugf("Failed to create temporary copy of destination texture.\n"); |
| return false; |
| } |
| SkIPoint dstPoint = {0, 0}; |
| this->copySurface(copy, rt, copyRect, dstPoint); |
| dstTexture->setTexture(copy); |
| dstTexture->setOffset(copyRect.fLeft, copyRect.fTop); |
| return true; |
| } |
| |
| void GrDrawTarget::prepareBatches(GrBatchFlushState* flushState) { |
| // Semi-usually the drawTargets are already closed at this point, but sometimes Ganesh |
| // needs to flush mid-draw. In that case, the SkGpuDevice's drawTargets won't be closed |
| // but need to be flushed anyway. Closing such drawTargets here will mean new |
| // drawTargets will be created to replace them if the SkGpuDevice(s) write to them again. |
| this->makeClosed(); |
| |
| // Loop over the batches that haven't yet generated their geometry |
| for (int i = 0; i < fBatches.count(); ++i) { |
| fBatches[i]->prepare(flushState); |
| } |
| } |
| |
| void GrDrawTarget::drawBatches(GrBatchFlushState* flushState) { |
| // Draw all the generated geometry. |
| SkRandom random; |
| for (int i = 0; i < fBatches.count(); ++i) { |
| if (fDrawBatchBounds) { |
| const SkRect& bounds = fBatches[i]->bounds(); |
| SkIRect ibounds; |
| bounds.roundOut(&ibounds); |
| // In multi-draw buffer all the batches use the same render target and we won't need to |
| // get the batchs bounds. |
| if (GrRenderTarget* rt = fBatches[i]->renderTarget()) { |
| fGpu->drawDebugWireRect(rt, ibounds, 0xFF000000 | random.nextU()); |
| } |
| } |
| fBatches[i]->draw(flushState); |
| } |
| |
| fGpu->finishDrawTarget(); |
| } |
| |
| void GrDrawTarget::reset() { |
| fBatches.reset(); |
| } |
| |
| void GrDrawTarget::drawBatch(const GrPipelineBuilder& pipelineBuilder, GrDrawBatch* batch) { |
| // Setup clip |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip)) { |
| return; |
| } |
| GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps; |
| if (clip.clipCoverageFragmentProcessor()) { |
| arfps.set(&pipelineBuilder); |
| arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor()); |
| } |
| |
| GrPipeline::CreateArgs args; |
| if (!this->installPipelineInDrawBatch(&pipelineBuilder, &clip.scissorState(), batch)) { |
| return; |
| } |
| |
| #ifdef ENABLE_MDB |
| SkASSERT(fRenderTarget); |
| batch->pipeline()->addDependenciesTo(fRenderTarget); |
| #endif |
| |
| this->recordBatch(batch); |
| } |
| |
| static const GrStencilSettings& winding_path_stencil_settings() { |
| GR_STATIC_CONST_SAME_STENCIL_STRUCT(gSettings, |
| kIncClamp_StencilOp, |
| kIncClamp_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xFFFF, 0xFFFF, 0xFFFF); |
| return *GR_CONST_STENCIL_SETTINGS_PTR_FROM_STRUCT_PTR(&gSettings); |
| } |
| |
| static const GrStencilSettings& even_odd_path_stencil_settings() { |
| GR_STATIC_CONST_SAME_STENCIL_STRUCT(gSettings, |
| kInvert_StencilOp, |
| kInvert_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xFFFF, 0xFFFF, 0xFFFF); |
| return *GR_CONST_STENCIL_SETTINGS_PTR_FROM_STRUCT_PTR(&gSettings); |
| } |
| |
| void GrDrawTarget::getPathStencilSettingsForFilltype(GrPathRendering::FillType fill, |
| const GrStencilAttachment* sb, |
| GrStencilSettings* outStencilSettings) { |
| |
| switch (fill) { |
| default: |
| SkFAIL("Unexpected path fill."); |
| case GrPathRendering::kWinding_FillType: |
| *outStencilSettings = winding_path_stencil_settings(); |
| break; |
| case GrPathRendering::kEvenOdd_FillType: |
| *outStencilSettings = even_odd_path_stencil_settings(); |
| break; |
| } |
| fClipMaskManager->adjustPathStencilParams(sb, outStencilSettings); |
| } |
| |
| void GrDrawTarget::stencilPath(const GrPipelineBuilder& pipelineBuilder, |
| const SkMatrix& viewMatrix, |
| const GrPath* path, |
| GrPathRendering::FillType fill) { |
| // TODO: extract portions of checkDraw that are relevant to path stenciling. |
| SkASSERT(path); |
| SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport()); |
| |
| // Setup clip |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, nullptr, &clip)) { |
| return; |
| } |
| |
| GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps; |
| if (clip.clipCoverageFragmentProcessor()) { |
| arfps.set(&pipelineBuilder); |
| arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor()); |
| } |
| |
| // set stencil settings for path |
| GrStencilSettings stencilSettings; |
| GrRenderTarget* rt = pipelineBuilder.getRenderTarget(); |
| GrStencilAttachment* sb = fResourceProvider->attachStencilAttachment(rt); |
| this->getPathStencilSettingsForFilltype(fill, sb, &stencilSettings); |
| |
| GrBatch* batch = GrStencilPathBatch::Create(viewMatrix, |
| pipelineBuilder.isHWAntialias(), |
| stencilSettings, clip.scissorState(), |
| pipelineBuilder.getRenderTarget(), |
| path); |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
| |
| void GrDrawTarget::drawPathBatch(const GrPipelineBuilder& pipelineBuilder, |
| GrDrawPathBatchBase* batch) { |
| // This looks like drawBatch() but there is an added wrinkle that stencil settings get inserted |
| // after setting up clipping but before onDrawBatch(). TODO: Figure out a better model for |
| // handling stencil settings WRT interactions between pipeline(builder), clipmaskmanager, and |
| // batches. |
| SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport()); |
| |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip)) { |
| return; |
| } |
| |
| GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps; |
| if (clip.clipCoverageFragmentProcessor()) { |
| arfps.set(&pipelineBuilder); |
| arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor()); |
| } |
| |
| // Ensure the render target has a stencil buffer and get the stencil settings. |
| GrStencilSettings stencilSettings; |
| GrRenderTarget* rt = pipelineBuilder.getRenderTarget(); |
| GrStencilAttachment* sb = fResourceProvider->attachStencilAttachment(rt); |
| this->getPathStencilSettingsForFilltype(batch->fillType(), sb, &stencilSettings); |
| batch->setStencilSettings(stencilSettings); |
| |
| GrPipeline::CreateArgs args; |
| if (!this->installPipelineInDrawBatch(&pipelineBuilder, &clip.scissorState(), batch)) { |
| return; |
| } |
| |
| this->recordBatch(batch); |
| } |
| |
| void GrDrawTarget::clear(const SkIRect* rect, |
| GrColor color, |
| bool canIgnoreRect, |
| GrRenderTarget* renderTarget) { |
| SkIRect rtRect = SkIRect::MakeWH(renderTarget->width(), renderTarget->height()); |
| SkIRect clippedRect; |
| if (!rect || |
| (canIgnoreRect && this->caps()->fullClearIsFree()) || |
| rect->contains(rtRect)) { |
| rect = &rtRect; |
| } else { |
| clippedRect = *rect; |
| if (!clippedRect.intersect(rtRect)) { |
| return; |
| } |
| rect = &clippedRect; |
| } |
| |
| if (this->caps()->useDrawInsteadOfClear()) { |
| // This works around a driver bug with clear by drawing a rect instead. |
| // The driver will ignore a clear if it is the only thing rendered to a |
| // target before the target is read. |
| if (rect == &rtRect) { |
| this->discard(renderTarget); |
| } |
| |
| GrPipelineBuilder pipelineBuilder; |
| pipelineBuilder.setXPFactory( |
| GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref(); |
| pipelineBuilder.setRenderTarget(renderTarget); |
| |
| SkRect scalarRect = SkRect::Make(*rect); |
| SkAutoTUnref<GrDrawBatch> batch( |
| GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(), scalarRect, |
| nullptr, nullptr)); |
| this->drawBatch(pipelineBuilder, batch); |
| } else { |
| GrBatch* batch = new GrClearBatch(*rect, color, renderTarget); |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
| } |
| |
| void GrDrawTarget::discard(GrRenderTarget* renderTarget) { |
| if (this->caps()->discardRenderTargetSupport()) { |
| GrBatch* batch = new GrDiscardBatch(renderTarget); |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::copySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| GrBatch* batch = GrCopySurfaceBatch::Create(dst, src, srcRect, dstPoint); |
| if (!batch) { |
| return false; |
| } |
| #ifdef ENABLE_MDB |
| this->addDependency(src); |
| #endif |
| |
| this->recordBatch(batch); |
| batch->unref(); |
| return true; |
| } |
| |
| template <class Left, class Right> static bool intersect(const Left& a, const Right& b) { |
| SkASSERT(a.fLeft <= a.fRight && a.fTop <= a.fBottom && |
| b.fLeft <= b.fRight && b.fTop <= b.fBottom); |
| return a.fLeft < b.fRight && b.fLeft < a.fRight && a.fTop < b.fBottom && b.fTop < a.fBottom; |
| } |
| |
| void GrDrawTarget::recordBatch(GrBatch* batch) { |
| // A closed drawTarget should never receive new/more batches |
| SkASSERT(!this->isClosed()); |
| |
| // Check if there is a Batch Draw we can batch with by linearly searching back until we either |
| // 1) check every draw |
| // 2) intersect with something |
| // 3) find a 'blocker' |
| GR_AUDIT_TRAIL_ADDBATCH(fAuditTrail, batch->name(), batch->bounds()); |
| GrBATCH_INFO("Re-Recording (%s, B%u)\n" |
| "\tBounds LRTB (%f, %f, %f, %f)\n", |
| batch->name(), |
| batch->uniqueID(), |
| batch->bounds().fLeft, batch->bounds().fRight, |
| batch->bounds().fTop, batch->bounds().fBottom); |
| GrBATCH_INFO(SkTabString(batch->dumpInfo(), 1).c_str()); |
| GrBATCH_INFO("\tOutcome:\n"); |
| int maxCandidates = SkTMin(fMaxBatchLookback, fBatches.count()); |
| if (maxCandidates) { |
| int i = 0; |
| while (true) { |
| GrBatch* candidate = fBatches.fromBack(i); |
| // We cannot continue to search backwards if the render target changes |
| if (candidate->renderTargetUniqueID() != batch->renderTargetUniqueID()) { |
| GrBATCH_INFO("\t\tBreaking because of (%s, B%u) Rendertarget\n", |
| candidate->name(), candidate->uniqueID()); |
| break; |
| } |
| if (candidate->combineIfPossible(batch, *this->caps())) { |
| GrBATCH_INFO("\t\tCombining with (%s, B%u)\n", candidate->name(), |
| candidate->uniqueID()); |
| return; |
| } |
| // Stop going backwards if we would cause a painter's order violation. |
| // TODO: The bounds used here do not fully consider the clip. It may be advantageous |
| // to clip each batch's bounds to the clip. |
| if (intersect(candidate->bounds(), batch->bounds())) { |
| GrBATCH_INFO("\t\tIntersects with (%s, B%u)\n", candidate->name(), |
| candidate->uniqueID()); |
| break; |
| } |
| ++i; |
| if (i == maxCandidates) { |
| GrBATCH_INFO("\t\tReached max lookback or beginning of batch array %d\n", i); |
| break; |
| } |
| } |
| } else { |
| GrBATCH_INFO("\t\tFirstBatch\n"); |
| } |
| fBatches.push_back().reset(SkRef(batch)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::installPipelineInDrawBatch(const GrPipelineBuilder* pipelineBuilder, |
| const GrScissorState* scissor, |
| GrDrawBatch* batch) { |
| GrPipeline::CreateArgs args; |
| args.fPipelineBuilder = pipelineBuilder; |
| args.fCaps = this->caps(); |
| args.fScissor = scissor; |
| batch->getPipelineOptimizations(&args.fOpts); |
| GrScissorState finalScissor; |
| if (args.fOpts.fOverrides.fUsePLSDstRead) { |
| GrRenderTarget* rt = pipelineBuilder->getRenderTarget(); |
| GrGLIRect viewport; |
| viewport.fLeft = 0; |
| viewport.fBottom = 0; |
| viewport.fWidth = rt->width(); |
| viewport.fHeight = rt->height(); |
| SkIRect ibounds; |
| ibounds.fLeft = SkTPin(SkScalarFloorToInt(batch->bounds().fLeft), viewport.fLeft, |
| viewport.fWidth); |
| ibounds.fTop = SkTPin(SkScalarFloorToInt(batch->bounds().fTop), viewport.fBottom, |
| viewport.fHeight); |
| ibounds.fRight = SkTPin(SkScalarCeilToInt(batch->bounds().fRight), viewport.fLeft, |
| viewport.fWidth); |
| ibounds.fBottom = SkTPin(SkScalarCeilToInt(batch->bounds().fBottom), viewport.fBottom, |
| viewport.fHeight); |
| if (scissor != nullptr && scissor->enabled()) { |
| if (!ibounds.intersect(scissor->rect())) { |
| ibounds = scissor->rect(); |
| } |
| } |
| finalScissor.set(ibounds); |
| args.fScissor = &finalScissor; |
| } |
| args.fOpts.fColorPOI.completeCalculations(pipelineBuilder->fColorFragmentProcessors.begin(), |
| pipelineBuilder->numColorFragmentProcessors()); |
| args.fOpts.fCoveragePOI.completeCalculations( |
| pipelineBuilder->fCoverageFragmentProcessors.begin(), |
| pipelineBuilder->numCoverageFragmentProcessors()); |
| if (!this->setupDstReadIfNecessary(*pipelineBuilder, args.fOpts, &args.fDstTexture, |
| batch->bounds())) { |
| return false; |
| } |
| |
| if (!batch->installPipeline(args)) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void GrDrawTarget::clearStencilClip(const SkIRect& rect, bool insideClip, GrRenderTarget* rt) { |
| GrBatch* batch = new GrClearStencilClipBatch(rect, insideClip, rt); |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
