609f1597e4
All coord transforms were identity, so this enshrines that knowledge, then transitively removes a large amount of code. Bug: skia:10416 Change-Id: Iae4af9ca21590bced1ce9fce3ab807f6cceaebd4 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/300234 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
286 lines
12 KiB
C++
286 lines
12 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/GrContext.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/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/GrContextPriv.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/GrPrimitiveProcessor.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/GrRenderTargetContext.h"
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#include "src/gpu/GrRenderTargetContextPriv.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/glsl/GrGLSLFragmentShaderBuilder.h"
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#include "src/gpu/glsl/GrGLSLGeometryProcessor.h"
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#include "src/gpu/glsl/GrGLSLPrimitiveProcessor.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 "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, kFloat2_GrSLType};
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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 skiagm::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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void onDraw(GrRecordingContext*, GrRenderTargetContext*, SkCanvas*) override;
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};
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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<ClockwiseTestProcessor>(readSkFragCoord);
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}
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const char* name() const final { return "ClockwiseTestProcessor"; }
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void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const final {
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b->add32(fReadSkFragCoord);
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}
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GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const final;
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bool readSkFragCoord() const { return fReadSkFragCoord; }
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private:
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friend class ::SkArenaAlloc; // for access to ctor
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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->setVertexAttributes(&gVertex, 1);
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}
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const bool fReadSkFragCoord;
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typedef GrGeometryProcessor INHERITED;
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};
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class GLSLClockwiseTestProcessor : public GrGLSLGeometryProcessor {
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void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor&) override {}
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void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
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const ClockwiseTestProcessor& proc = args.fGP.cast<ClockwiseTestProcessor>();
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args.fVaryingHandler->emitAttributes(proc);
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gpArgs->fPositionVar.set(kFloat2_GrSLType, "position");
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args.fFragBuilder->codeAppendf(
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"%s = sk_Clockwise ? half4(0,1,0,1) : half4(1,0,0,1);", args.fOutputColor);
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if (!proc.readSkFragCoord()) {
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args.fFragBuilder->codeAppendf("%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("%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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GrGLSLPrimitiveProcessor* ClockwiseTestProcessor::createGLSLInstance(
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const GrShaderCaps&) const {
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return new GLSLClockwiseTestProcessor;
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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 std::unique_ptr<GrDrawOp> Make(GrRecordingContext* context,
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bool readSkFragCoord, int y = 0) {
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GrOpMemoryPool* pool = context->priv().opMemoryPool();
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return pool->allocate<ClockwiseTestOp>(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*,
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bool hasMixedSampledCoverage, 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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GrAppliedClip&& appliedClip,
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const GrXferProcessor::DstProxyView& dstProxyView) const {
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GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(arena, fReadSkFragCoord);
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return sk_gpu_test::CreateProgramInfo(caps, arena, writeView,
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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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}
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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->detachAppliedClip(),
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flushState->dstProxyView());
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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 GrXferProcessor::DstProxyView& dstProxyView) final {
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SkArenaAlloc* arena = context->priv().recordTimeAllocator();
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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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std::move(appliedClip), dstProxyView);
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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, fVertexBuffer.get());
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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 GrPrimitiveProcessor 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 GrPrimitiveProcessor 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 ::GrOpMemoryPool; // for ctor
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typedef GrDrawOp INHERITED;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Test.
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void ClockwiseGM::onDraw(GrRecordingContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas) {
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rtc->clear(SK_PMColor4fBLACK);
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// Draw the test directly to the frame buffer.
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rtc->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
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rtc->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100));
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// Draw the test to an off-screen, top-down render target.
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GrColorType rtcColorType = rtc->colorInfo().colorType();
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if (auto topLeftRTC = GrRenderTargetContext::Make(
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ctx, rtcColorType, nullptr, SkBackingFit::kExact, {100, 200}, 1,
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GrMipMapped::kNo, GrProtected::kNo, kTopLeft_GrSurfaceOrigin, SkBudgeted::kYes,
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nullptr)) {
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topLeftRTC->clear(SK_PMColor4fTRANSPARENT);
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topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
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topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100));
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rtc->drawTexture(nullptr, topLeftRTC->readSurfaceView(), rtc->colorInfo().alphaType(),
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GrSamplerState::Filter::kNearest, SkBlendMode::kSrcOver, SK_PMColor4fWHITE,
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{0, 0, 100, 200}, {100, 0, 200, 200}, GrAA::kNo, GrQuadAAFlags::kNone,
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SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint, 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 topLeftRTC = GrRenderTargetContext::Make(
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ctx, rtcColorType, nullptr, SkBackingFit::kExact, {100, 200}, 1,
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GrMipMapped::kNo, GrProtected::kNo, kBottomLeft_GrSurfaceOrigin, SkBudgeted::kYes,
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nullptr)) {
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topLeftRTC->clear(SK_PMColor4fTRANSPARENT);
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topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
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topLeftRTC->priv().testingOnly_addDrawOp(ClockwiseTestOp::Make(ctx, true, 100));
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rtc->drawTexture(nullptr, topLeftRTC->readSurfaceView(), rtc->colorInfo().alphaType(),
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GrSamplerState::Filter::kNearest, SkBlendMode::kSrcOver, SK_PMColor4fWHITE,
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{0, 0, 100, 200}, {200, 0, 300, 200}, GrAA::kNo, GrQuadAAFlags::kNone,
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SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint, SkMatrix::I(),
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nullptr);
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new ClockwiseGM(); )
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}
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