| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBlendMode.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "include/gpu/GrContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/GrRecordingContext.h" |
| #include "include/private/GrTypesPriv.h" |
| #include "include/private/SkColorData.h" |
| #include "src/gpu/GrBuffer.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/GrClip.h" |
| #include "src/gpu/GrColorSpaceXform.h" |
| #include "src/gpu/GrContextPriv.h" |
| #include "src/gpu/GrGeometryProcessor.h" |
| #include "src/gpu/GrGpuBuffer.h" |
| #include "src/gpu/GrMemoryPool.h" |
| #include "src/gpu/GrMesh.h" |
| #include "src/gpu/GrOpFlushState.h" |
| #include "src/gpu/GrOpsRenderPass.h" |
| #include "src/gpu/GrPipeline.h" |
| #include "src/gpu/GrPrimitiveProcessor.h" |
| #include "src/gpu/GrProcessor.h" |
| #include "src/gpu/GrProcessorSet.h" |
| #include "src/gpu/GrProgramInfo.h" |
| #include "src/gpu/GrRecordingContextPriv.h" |
| #include "src/gpu/GrRenderTargetContext.h" |
| #include "src/gpu/GrRenderTargetContextPriv.h" |
| #include "src/gpu/GrResourceProvider.h" |
| #include "src/gpu/GrSamplerState.h" |
| #include "src/gpu/GrShaderCaps.h" |
| #include "src/gpu/GrShaderVar.h" |
| #include "src/gpu/GrSurfaceProxy.h" |
| #include "src/gpu/GrTextureProxy.h" |
| #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "src/gpu/glsl/GrGLSLGeometryProcessor.h" |
| #include "src/gpu/glsl/GrGLSLPrimitiveProcessor.h" |
| #include "src/gpu/glsl/GrGLSLVarying.h" |
| #include "src/gpu/ops/GrDrawOp.h" |
| #include "src/gpu/ops/GrOp.h" |
| #include "tools/gpu/ProxyUtils.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| class GrAppliedClip; |
| class GrGLSLProgramDataManager; |
| |
| namespace { |
| |
| static constexpr GrGeometryProcessor::Attribute gVertex = |
| {"position", kFloat2_GrVertexAttribType, kFloat2_GrSLType}; |
| |
| /** |
| * This is a GPU-backend specific test. It ensures that SkSL properly identifies clockwise-winding |
| * triangles (sk_Clockwise), in terms of to Skia device space, in all backends and with all render |
| * target origins. We draw clockwise triangles green and counter-clockwise red. |
| */ |
| class ClockwiseGM : public skiagm::GpuGM { |
| SkString onShortName() override { return SkString("clockwise"); } |
| SkISize onISize() override { return {300, 200}; } |
| void onDraw(GrContext*, GrRenderTargetContext*, SkCanvas*) override; |
| }; |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////// |
| // SkSL code. |
| |
| class ClockwiseTestProcessor : public GrGeometryProcessor { |
| public: |
| static GrGeometryProcessor* Make(SkArenaAlloc* arena, bool readSkFragCoord) { |
| return arena->make<ClockwiseTestProcessor>(readSkFragCoord); |
| } |
| |
| const char* name() const final { return "ClockwiseTestProcessor"; } |
| |
| void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const final { |
| b->add32(fReadSkFragCoord); |
| } |
| |
| GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const final; |
| |
| bool readSkFragCoord() const { return fReadSkFragCoord; } |
| |
| private: |
| friend class ::SkArenaAlloc; // for access to ctor |
| |
| ClockwiseTestProcessor(bool readSkFragCoord) |
| : GrGeometryProcessor(kClockwiseTestProcessor_ClassID) |
| , fReadSkFragCoord(readSkFragCoord) { |
| this->setVertexAttributes(&gVertex, 1); |
| } |
| |
| const bool fReadSkFragCoord; |
| |
| typedef GrGeometryProcessor INHERITED; |
| }; |
| |
| class GLSLClockwiseTestProcessor : public GrGLSLGeometryProcessor { |
| void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor&, |
| FPCoordTransformIter&& transformIter) override {} |
| |
| void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override { |
| const ClockwiseTestProcessor& proc = args.fGP.cast<ClockwiseTestProcessor>(); |
| args.fVaryingHandler->emitAttributes(proc); |
| gpArgs->fPositionVar.set(kFloat2_GrSLType, "position"); |
| args.fFragBuilder->codeAppendf( |
| "%s = sk_Clockwise ? half4(0,1,0,1) : half4(1,0,0,1);", args.fOutputColor); |
| if (!proc.readSkFragCoord()) { |
| args.fFragBuilder->codeAppendf("%s = half4(1);", args.fOutputCoverage); |
| } else { |
| // Verify layout(origin_upper_left) on gl_FragCoord does not affect gl_FrontFacing. |
| args.fFragBuilder->codeAppendf("%s = half4(min(half(sk_FragCoord.y), 1));", |
| args.fOutputCoverage); |
| } |
| } |
| }; |
| |
| GrGLSLPrimitiveProcessor* ClockwiseTestProcessor::createGLSLInstance( |
| const GrShaderCaps&) const { |
| return new GLSLClockwiseTestProcessor; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////// |
| // Draw Op. |
| |
| class ClockwiseTestOp : public GrDrawOp { |
| public: |
| DEFINE_OP_CLASS_ID |
| |
| static std::unique_ptr<GrDrawOp> Make(GrRecordingContext* context, |
| bool readSkFragCoord, int y = 0) { |
| GrOpMemoryPool* pool = context->priv().opMemoryPool(); |
| return pool->allocate<ClockwiseTestOp>(readSkFragCoord, y); |
| } |
| |
| private: |
| ClockwiseTestOp(bool readSkFragCoord, float y) |
| : GrDrawOp(ClassID()) |
| , fReadSkFragCoord(readSkFragCoord) |
| , fY(y) { |
| this->setBounds(SkRect::MakeXYWH(0, fY, 100, 100), HasAABloat::kNo, IsHairline::kNo); |
| } |
| |
| const char* name() const override { return "ClockwiseTestOp"; } |
| FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; } |
| GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*, |
| bool hasMixedSampledCoverage, GrClampType) override { |
| return GrProcessorSet::EmptySetAnalysis(); |
| } |
| |
| void onPrePrepare(GrRecordingContext* context, |
| const GrSurfaceProxyView* dstView, |
| GrAppliedClip* clip, |
| const GrXferProcessor::DstProxyView& dstProxyView) final { |
| SkArenaAlloc* arena = context->priv().recordTimeAllocator(); |
| |
| // This is equivalent to a GrOpFlushState::detachAppliedClip |
| GrAppliedClip appliedClip = clip ? std::move(*clip) : GrAppliedClip(); |
| |
| GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(arena, fReadSkFragCoord); |
| |
| // TODO: need to also give this to the recording context |
| fProgramInfo = sk_gpu_test::CreateProgramInfo(context->priv().caps(), arena, dstView, |
| std::move(appliedClip), dstProxyView, |
| geomProc, SkBlendMode::kPlus, |
| GrPrimitiveType::kTriangleStrip); |
| } |
| |
| void onPrepare(GrOpFlushState* flushState) override { |
| SkPoint vertices[4] = { |
| {100, fY}, |
| {0, fY+100}, |
| {0, fY}, |
| {100, fY+100}, |
| }; |
| fVertexBuffer = flushState->resourceProvider()->createBuffer( |
| sizeof(vertices), GrGpuBufferType::kVertex, kStatic_GrAccessPattern, vertices); |
| } |
| |
| void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override { |
| if (!fVertexBuffer) { |
| return; |
| } |
| |
| if (!fProgramInfo) { |
| GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(flushState->allocator(), |
| fReadSkFragCoord); |
| |
| fProgramInfo = sk_gpu_test::CreateProgramInfo(&flushState->caps(), |
| flushState->allocator(), |
| flushState->view(), |
| flushState->detachAppliedClip(), |
| flushState->dstProxyView(), |
| geomProc, SkBlendMode::kPlus, |
| GrPrimitiveType::kTriangleStrip); |
| } |
| |
| GrMesh mesh(GrPrimitiveType::kTriangleStrip); |
| mesh.setNonIndexedNonInstanced(4); |
| mesh.setVertexData(std::move(fVertexBuffer)); |
| |
| flushState->opsRenderPass()->draw(*fProgramInfo, &mesh, 1, |
| SkRect::MakeXYWH(0, fY, 100, 100)); |
| } |
| |
| sk_sp<GrBuffer> fVertexBuffer; |
| const bool fReadSkFragCoord; |
| const float fY; |
| |
| // The program info (and both the GrPipeline and GrPrimitiveProcessor it relies on), when |
| // allocated, are allocated in either the ddl-record-time or flush-time arena. It is the |
| // arena's job to free up their memory so we just have a bare programInfo pointer here. We |
| // don't even store the GrPipeline and GrPrimitiveProcessor pointers here bc they are |
| // guaranteed to have the same lifetime as the program info. |
| GrProgramInfo* fProgramInfo = nullptr; |
| |
| friend class ::GrOpMemoryPool; // for ctor |
| |
| typedef GrDrawOp INHERITED; |
| }; |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////// |
| // Test. |
| |
| void ClockwiseGM::onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas) { |
| rtc->clear(nullptr, { 0, 0, 0, 1 }, GrRenderTargetContext::CanClearFullscreen::kYes); |
| |
| // Draw the test directly to the frame buffer. |
| rtc->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0)); |
| rtc->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100)); |
| |
| // Draw the test to an off-screen, top-down render target. |
| GrColorType rtcColorType = rtc->colorInfo().colorType(); |
| if (auto topLeftRTC = ctx->priv().makeDeferredRenderTargetContext( |
| SkBackingFit::kExact, 100, 200, rtcColorType, nullptr, 1, |
| GrMipMapped::kNo, kTopLeft_GrSurfaceOrigin, nullptr, SkBudgeted::kYes)) { |
| topLeftRTC->clear(nullptr, SK_PMColor4fTRANSPARENT, |
| GrRenderTargetContext::CanClearFullscreen::kYes); |
| topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0)); |
| topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100)); |
| rtc->drawTexture(GrNoClip(), sk_ref_sp(topLeftRTC->asTextureProxy()), rtcColorType, |
| GrSamplerState::Filter::kNearest, SkBlendMode::kSrcOver, |
| SK_PMColor4fWHITE, {0, 0, 100, 200}, |
| {100, 0, 200, 200}, GrAA::kNo, GrQuadAAFlags::kNone, |
| SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint, SkMatrix::I(), |
| nullptr); |
| } |
| |
| // Draw the test to an off-screen, bottom-up render target. |
| if (auto topLeftRTC = ctx->priv().makeDeferredRenderTargetContext( |
| SkBackingFit::kExact, 100, 200, rtcColorType, nullptr, 1, |
| GrMipMapped::kNo, kBottomLeft_GrSurfaceOrigin, nullptr, SkBudgeted::kYes)) { |
| topLeftRTC->clear(nullptr, SK_PMColor4fTRANSPARENT, |
| GrRenderTargetContext::CanClearFullscreen::kYes); |
| topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0)); |
| topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100)); |
| rtc->drawTexture(GrNoClip(), sk_ref_sp(topLeftRTC->asTextureProxy()), rtcColorType, |
| GrSamplerState::Filter::kNearest, SkBlendMode::kSrcOver, |
| SK_PMColor4fWHITE, {0, 0, 100, 200}, |
| {200, 0, 300, 200}, GrAA::kNo, GrQuadAAFlags::kNone, |
| SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint, SkMatrix::I(), |
| nullptr); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new ClockwiseGM(); ) |
| |
| } |