| |
| /* |
| * 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 "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 "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" |
| |
| #include "SkStrokeRec.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawTarget::GrDrawTarget(GrGpu* gpu, GrResourceProvider* resourceProvider) |
| : fGpu(SkRef(gpu)) |
| , fResourceProvider(resourceProvider) |
| , fFlushState(fGpu, fResourceProvider, 0) |
| , fFlushing(false) |
| , fFirstUnpreparedBatch(0) { |
| // TODO: Stop extracting the context (currently needed by GrClipMaskManager) |
| fContext = fGpu->getContext(); |
| fClipMaskManager.reset(new GrClipMaskManager(this)); |
| } |
| |
| GrDrawTarget::~GrDrawTarget() { |
| fGpu->unref(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::setupDstReadIfNecessary(const GrPipelineBuilder& pipelineBuilder, |
| const GrProcOptInfo& colorPOI, |
| const GrProcOptInfo& coveragePOI, |
| GrXferProcessor::DstTexture* dstTexture, |
| const SkRect& batchBounds) { |
| SkRect bounds = batchBounds; |
| bounds.outset(0.5f, 0.5f); |
| |
| if (!pipelineBuilder.willXPNeedDstTexture(*this->caps(), colorPOI, coveragePOI)) { |
| 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, ©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::flush() { |
| if (fFlushing) { |
| return; |
| } |
| fFlushing = true; |
| |
| // Loop over all batches and generate geometry |
| for (; fFirstUnpreparedBatch < fBatches.count(); ++fFirstUnpreparedBatch) { |
| fBatches[fFirstUnpreparedBatch]->prepare(&fFlushState); |
| } |
| |
| // Upload all data to the GPU |
| fFlushState.preIssueDraws(); |
| |
| // Draw all the generated geometry. |
| for (int i = 0; i < fBatches.count(); ++i) { |
| fBatches[i]->draw(&fFlushState); |
| } |
| |
| SkASSERT(fFlushState.lastFlushedToken() == fFlushState.currentToken()); |
| this->reset(); |
| |
| fFlushing = false; |
| } |
| |
| void GrDrawTarget::reset() { |
| fFirstUnpreparedBatch = 0; |
| fBatches.reset(); |
| fFlushState.reset(); |
| } |
| |
| void GrDrawTarget::drawBatch(const GrPipelineBuilder& pipelineBuilder, GrDrawBatch* batch) { |
| // Setup clip |
| GrScissorState scissorState; |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &scissorState, &batch->bounds(), |
| &clip)) { |
| return; |
| } |
| GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps; |
| if (clip.clipCoverageFragmentProcessor()) { |
| arfps.set(&pipelineBuilder); |
| arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor()); |
| } |
| |
| GrPipeline::CreateArgs args; |
| if (!this->installPipelineInDrawBatch(&pipelineBuilder, &scissorState, batch)) { |
| return; |
| } |
| |
| 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 |
| GrScissorState scissorState; |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &scissorState, 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, scissorState, |
| pipelineBuilder.getRenderTarget(), |
| path); |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
| |
| void GrDrawTarget::drawPath(const GrPipelineBuilder& pipelineBuilder, |
| const SkMatrix& viewMatrix, |
| GrColor color, |
| const GrPath* path, |
| GrPathRendering::FillType fill) { |
| SkASSERT(path); |
| SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport()); |
| |
| GrDrawPathBatchBase* batch = GrDrawPathBatch::Create(viewMatrix, color, path); |
| this->drawPathBatch(pipelineBuilder, batch, fill); |
| batch->unref(); |
| } |
| |
| void GrDrawTarget::drawPathsFromRange(const GrPipelineBuilder& pipelineBuilder, |
| const SkMatrix& viewMatrix, |
| const SkMatrix& localMatrix, |
| GrColor color, |
| GrPathRange* range, |
| GrPathRangeDraw* draw, |
| GrPathRendering::FillType fill) { |
| GrDrawPathBatchBase* batch = GrDrawPathRangeBatch::Create(viewMatrix, localMatrix, color, |
| range, draw); |
| this->drawPathBatch(pipelineBuilder, batch, fill); |
| batch->unref(); |
| } |
| |
| void GrDrawTarget::drawPathBatch(const GrPipelineBuilder& pipelineBuilder, |
| GrDrawPathBatchBase* batch, |
| GrPathRendering::FillType fill) { |
| // 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. |
| |
| GrScissorState scissorState; |
| GrPipelineBuilder::AutoRestoreStencil ars; |
| GrAppliedClip clip; |
| if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &scissorState, &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(fill, sb, &stencilSettings); |
| batch->setStencilSettings(stencilSettings); |
| |
| GrPipeline::CreateArgs args; |
| if (!this->installPipelineInDrawBatch(&pipelineBuilder, &scissorState, batch)) { |
| return; |
| } |
| |
| this->recordBatch(batch); |
| } |
| |
| void GrDrawTarget::drawNonAARect(const GrPipelineBuilder& pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect) { |
| SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, viewMatrix, rect, |
| nullptr, nullptr)); |
| this->drawBatch(pipelineBuilder, batch); |
| } |
| |
| void GrDrawTarget::drawNonAARect(const GrPipelineBuilder& pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect, |
| const SkMatrix& localMatrix) { |
| SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, viewMatrix, rect, |
| nullptr, &localMatrix)); |
| this->drawBatch(pipelineBuilder, batch); |
| } |
| |
| void GrDrawTarget::drawNonAARect(const GrPipelineBuilder& pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect, |
| const SkRect& localRect) { |
| SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, viewMatrix, rect, |
| &localRect, nullptr)); |
| this->drawBatch(pipelineBuilder, batch); |
| } |
| |
| |
| void GrDrawTarget::drawAARect(const GrPipelineBuilder& pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect, |
| const SkRect& devRect) { |
| SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateAAFill(color, viewMatrix, rect, |
| devRect)); |
| this->drawBatch(pipelineBuilder, 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.setRenderTarget(renderTarget); |
| |
| this->drawNonAARect(pipelineBuilder, color, SkMatrix::I(), *rect); |
| } 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(); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrDrawTarget::copySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) { |
| GrBatch* batch = GrCopySurfaceBatch::Create(dst, src, srcRect, dstPoint); |
| if (batch) { |
| this->recordBatch(batch); |
| batch->unref(); |
| } |
| } |
| |
| 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) { |
| // 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' |
| // Experimentally we have found that most batching occurs within the first 10 comparisons. |
| static const int kMaxLookback = 10; |
| |
| 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(kMaxLookback, 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. |
| 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)); |
| if (fBatches.count() > kMaxLookback) { |
| SkASSERT(fBatches.count() - kMaxLookback - fFirstUnpreparedBatch == 1); |
| fBatches[fFirstUnpreparedBatch++]->prepare(&fFlushState); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool GrDrawTarget::installPipelineInDrawBatch(const GrPipelineBuilder* pipelineBuilder, |
| const GrScissorState* scissor, |
| GrDrawBatch* batch) { |
| GrPipeline::CreateArgs args; |
| args.fPipelineBuilder = pipelineBuilder; |
| args.fCaps = this->caps(); |
| args.fScissor = scissor; |
| args.fColorPOI = pipelineBuilder->colorProcInfo(batch); |
| args.fCoveragePOI = pipelineBuilder->coverageProcInfo(batch); |
| if (!this->setupDstReadIfNecessary(*pipelineBuilder, args.fColorPOI, |
| args.fCoveragePOI, &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(); |
| } |
