329 lines
13 KiB
C++
329 lines
13 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColorSpace.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypes.h"
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#include "include/gpu/GrRecordingContext.h"
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#include "include/gpu/GrTypes.h"
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#include "include/private/GrTypesPriv.h"
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#include "include/private/SkColorData.h"
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#include "src/core/SkCanvasPriv.h"
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#include "src/gpu/GrBuffer.h"
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#include "src/gpu/GrCaps.h"
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#include "src/gpu/GrColorSpaceXform.h"
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#include "src/gpu/GrDirectContextPriv.h"
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#include "src/gpu/GrGeometryProcessor.h"
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#include "src/gpu/GrGpuBuffer.h"
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#include "src/gpu/GrMemoryPool.h"
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#include "src/gpu/GrOpFlushState.h"
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#include "src/gpu/GrOpsRenderPass.h"
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#include "src/gpu/GrPipeline.h"
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#include "src/gpu/GrProcessor.h"
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#include "src/gpu/GrProcessorSet.h"
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#include "src/gpu/GrProgramInfo.h"
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#include "src/gpu/GrRecordingContextPriv.h"
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#include "src/gpu/GrResourceProvider.h"
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#include "src/gpu/GrSamplerState.h"
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#include "src/gpu/GrShaderCaps.h"
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#include "src/gpu/GrShaderVar.h"
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#include "src/gpu/GrSurfaceProxy.h"
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#include "src/gpu/GrTextureProxy.h"
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#include "src/gpu/KeyBuilder.h"
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#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
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#include "src/gpu/glsl/GrGLSLVarying.h"
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#include "src/gpu/ops/GrDrawOp.h"
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#include "src/gpu/ops/GrOp.h"
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#include "src/gpu/v1/SurfaceDrawContext_v1.h"
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#include "tools/gpu/ProxyUtils.h"
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#include <memory>
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#include <utility>
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class GrAppliedClip;
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class GrGLSLProgramDataManager;
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namespace {
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static constexpr GrGeometryProcessor::Attribute gVertex =
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{"position", kFloat2_GrVertexAttribType, SkSLType::kFloat2};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// SkSL code.
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class ClockwiseTestProcessor : public GrGeometryProcessor {
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public:
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static GrGeometryProcessor* Make(SkArenaAlloc* arena, bool readSkFragCoord) {
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return arena->make([&](void* ptr) {
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return new (ptr) ClockwiseTestProcessor(readSkFragCoord);
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});
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}
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const char* name() const final { return "ClockwiseTestProcessor"; }
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void addToKey(const GrShaderCaps&, skgpu::KeyBuilder* b) const final {
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b->add32(fReadSkFragCoord);
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}
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std::unique_ptr<ProgramImpl> makeProgramImpl(const GrShaderCaps&) const final;
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bool readSkFragCoord() const { return fReadSkFragCoord; }
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private:
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ClockwiseTestProcessor(bool readSkFragCoord)
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: GrGeometryProcessor(kClockwiseTestProcessor_ClassID)
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, fReadSkFragCoord(readSkFragCoord) {
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this->setVertexAttributesWithImplicitOffsets(&gVertex, 1);
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}
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const bool fReadSkFragCoord;
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using INHERITED = GrGeometryProcessor;
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};
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std::unique_ptr<GrGeometryProcessor::ProgramImpl> ClockwiseTestProcessor::makeProgramImpl(
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const GrShaderCaps&) const {
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class Impl : public ProgramImpl {
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public:
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void setData(const GrGLSLProgramDataManager&,
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const GrShaderCaps&,
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const GrGeometryProcessor&) override {}
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private:
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void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
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const ClockwiseTestProcessor& proc = args.fGeomProc.cast<ClockwiseTestProcessor>();
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args.fVaryingHandler->emitAttributes(proc);
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gpArgs->fPositionVar.set(SkSLType::kFloat2, "position");
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args.fFragBuilder->codeAppendf(
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"half4 %s = sk_Clockwise ? half4(0,1,0,1) : half4(1,0,0,1);",
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args.fOutputColor);
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if (!proc.readSkFragCoord()) {
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args.fFragBuilder->codeAppendf("const half4 %s = half4(1);", args.fOutputCoverage);
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} else {
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// Verify layout(origin_upper_left) on gl_FragCoord does not affect gl_FrontFacing.
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args.fFragBuilder->codeAppendf("half4 %s = half4(min(half(sk_FragCoord.y), 1));",
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args.fOutputCoverage);
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}
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}
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};
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return std::make_unique<Impl>();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Draw Op.
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class ClockwiseTestOp : public GrDrawOp {
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public:
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DEFINE_OP_CLASS_ID
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static GrOp::Owner Make(GrRecordingContext* context,
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bool readSkFragCoord, int y = 0) {
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return GrOp::Make<ClockwiseTestOp>(context, readSkFragCoord, y);
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}
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private:
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ClockwiseTestOp(bool readSkFragCoord, float y)
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: GrDrawOp(ClassID())
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, fReadSkFragCoord(readSkFragCoord)
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, fY(y) {
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this->setBounds(SkRect::MakeXYWH(0, fY, 100, 100), HasAABloat::kNo, IsHairline::kNo);
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}
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const char* name() const override { return "ClockwiseTestOp"; }
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FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
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GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*, GrClampType) override {
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return GrProcessorSet::EmptySetAnalysis();
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}
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GrProgramInfo* createProgramInfo(const GrCaps* caps,
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SkArenaAlloc* arena,
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const GrSurfaceProxyView& writeView,
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bool usesMSAASurface,
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GrAppliedClip&& appliedClip,
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const GrDstProxyView& dstProxyView,
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GrXferBarrierFlags renderPassXferBarriers,
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GrLoadOp colorLoadOp) const {
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GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(arena, fReadSkFragCoord);
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return sk_gpu_test::CreateProgramInfo(caps, arena, writeView, usesMSAASurface,
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std::move(appliedClip), dstProxyView,
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geomProc, SkBlendMode::kPlus,
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GrPrimitiveType::kTriangleStrip,
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renderPassXferBarriers, colorLoadOp);
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}
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GrProgramInfo* createProgramInfo(GrOpFlushState* flushState) const {
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return this->createProgramInfo(&flushState->caps(),
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flushState->allocator(),
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flushState->writeView(),
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flushState->usesMSAASurface(),
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flushState->detachAppliedClip(),
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flushState->dstProxyView(),
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flushState->renderPassBarriers(),
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flushState->colorLoadOp());
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}
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void onPrePrepare(GrRecordingContext* context,
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const GrSurfaceProxyView& writeView,
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GrAppliedClip* clip,
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const GrDstProxyView& dstProxyView,
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GrXferBarrierFlags renderPassXferBarriers,
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GrLoadOp colorLoadOp) final {
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SkArenaAlloc* arena = context->priv().recordTimeAllocator();
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// DMSAA is not supported on DDL.
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bool usesMSAASurface = writeView.asRenderTargetProxy()->numSamples() > 1;
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// This is equivalent to a GrOpFlushState::detachAppliedClip
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GrAppliedClip appliedClip = clip ? std::move(*clip) : GrAppliedClip::Disabled();
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fProgramInfo = this->createProgramInfo(context->priv().caps(), arena, writeView,
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usesMSAASurface, std::move(appliedClip),
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dstProxyView, renderPassXferBarriers, colorLoadOp);
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context->priv().recordProgramInfo(fProgramInfo);
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}
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void onPrepare(GrOpFlushState* flushState) override {
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SkPoint vertices[4] = {
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{100, fY},
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{0, fY+100},
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{0, fY},
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{100, fY+100},
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};
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fVertexBuffer = flushState->resourceProvider()->createBuffer(
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sizeof(vertices), GrGpuBufferType::kVertex, kStatic_GrAccessPattern, vertices);
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}
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void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
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if (!fVertexBuffer) {
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return;
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}
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if (!fProgramInfo) {
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fProgramInfo = this->createProgramInfo(flushState);
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}
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flushState->bindPipeline(*fProgramInfo, SkRect::MakeXYWH(0, fY, 100, 100));
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flushState->bindBuffers(nullptr, nullptr, std::move(fVertexBuffer));
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flushState->draw(4, 0);
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}
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sk_sp<GrBuffer> fVertexBuffer;
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const bool fReadSkFragCoord;
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const float fY;
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// The program info (and both the GrPipeline and GrGeometryProcessor it relies on), when
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// allocated, are allocated in either the ddl-record-time or flush-time arena. It is the
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// arena's job to free up their memory so we just have a bare programInfo pointer here. We
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// don't even store the GrPipeline and GrGeometryProcessor pointers here bc they are
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// guaranteed to have the same lifetime as the program info.
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GrProgramInfo* fProgramInfo = nullptr;
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friend class ::GrOp; // for ctor
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using INHERITED = GrDrawOp;
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};
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} // namespace
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Test.
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namespace skiagm {
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/**
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* This is a GPU-backend specific test. It ensures that SkSL properly identifies clockwise-winding
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* triangles (sk_Clockwise), in terms of to Skia device space, in all backends and with all render
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* target origins. We draw clockwise triangles green and counter-clockwise red.
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*/
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class ClockwiseGM : public GpuGM {
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SkString onShortName() override { return SkString("clockwise"); }
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SkISize onISize() override { return {300, 200}; }
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DrawResult onDraw(GrRecordingContext*, SkCanvas*, SkString* errorMsg) override;
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};
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DrawResult ClockwiseGM::onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) {
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auto sdc = SkCanvasPriv::TopDeviceSurfaceDrawContext(canvas);
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if (!sdc) {
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*errorMsg = kErrorMsg_DrawSkippedGpuOnly;
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return DrawResult::kSkip;
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}
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sdc->clear(SK_PMColor4fBLACK);
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// Draw the test directly to the frame buffer.
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sdc->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
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sdc->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
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// Draw the test to an off-screen, top-down render target.
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GrColorType sdcColorType = sdc->colorInfo().colorType();
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if (auto topLeftSDC = skgpu::v1::SurfaceDrawContext::Make(
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rContext, sdcColorType, nullptr, SkBackingFit::kExact, {100, 200}, SkSurfaceProps(),
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1, GrMipmapped::kNo, GrProtected::kNo, kTopLeft_GrSurfaceOrigin,
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SkBudgeted::kYes)) {
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topLeftSDC->clear(SK_PMColor4fTRANSPARENT);
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topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
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topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
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sdc->drawTexture(nullptr,
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topLeftSDC->readSurfaceView(),
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sdc->colorInfo().alphaType(),
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GrSamplerState::Filter::kNearest,
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GrSamplerState::MipmapMode::kNone,
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SkBlendMode::kSrcOver,
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SK_PMColor4fWHITE,
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{0, 0, 100, 200},
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{100, 0, 200, 200},
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GrAA::kNo,
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GrQuadAAFlags::kNone,
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SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint,
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SkMatrix::I(),
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nullptr);
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}
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// Draw the test to an off-screen, bottom-up render target.
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if (auto topLeftSDC = skgpu::v1::SurfaceDrawContext::Make(
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rContext, sdcColorType, nullptr, SkBackingFit::kExact, {100, 200}, SkSurfaceProps(),
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1, GrMipmapped::kNo, GrProtected::kNo, kBottomLeft_GrSurfaceOrigin,
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SkBudgeted::kYes)) {
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topLeftSDC->clear(SK_PMColor4fTRANSPARENT);
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topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
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topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
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sdc->drawTexture(nullptr,
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topLeftSDC->readSurfaceView(),
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sdc->colorInfo().alphaType(),
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GrSamplerState::Filter::kNearest,
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GrSamplerState::MipmapMode::kNone,
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SkBlendMode::kSrcOver,
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SK_PMColor4fWHITE,
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{0, 0, 100, 200},
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{200, 0, 300, 200},
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GrAA::kNo,
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GrQuadAAFlags::kNone,
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SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint,
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SkMatrix::I(),
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nullptr);
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}
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return DrawResult::kOk;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new ClockwiseGM(); )
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} // namespace skiagm
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