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skia2/gm/clockwise.cpp
Chris Dalton f5b87f9b11 Make SkSurfaceProps non-optional for SDCs and SkSpecialImages 
This ensures we don't lose the original SkSurfaceProps when creating
image filters, etc.

Bug: skia:11396
Change-Id: I6b412361c1005138278a1396faa7f7e069ec7eb2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/397291
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
2021-04-20 16:22:46 +00:00

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/*
* 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/GrRecordingContext.h"
#include "include/gpu/GrTypes.h"
#include "include/private/GrTypesPriv.h"
#include "include/private/SkColorData.h"
#include "src/gpu/GrBuffer.h"
#include "src/gpu/GrCaps.h"
#include "src/gpu/GrColorSpaceXform.h"
#include "src/gpu/GrDirectContextPriv.h"
#include "src/gpu/GrGeometryProcessor.h"
#include "src/gpu/GrGpuBuffer.h"
#include "src/gpu/GrMemoryPool.h"
#include "src/gpu/GrOpFlushState.h"
#include "src/gpu/GrOpsRenderPass.h"
#include "src/gpu/GrPipeline.h"
#include "src/gpu/GrProcessor.h"
#include "src/gpu/GrProcessorSet.h"
#include "src/gpu/GrProgramInfo.h"
#include "src/gpu/GrRecordingContextPriv.h"
#include "src/gpu/GrResourceProvider.h"
#include "src/gpu/GrSamplerState.h"
#include "src/gpu/GrShaderCaps.h"
#include "src/gpu/GrShaderVar.h"
#include "src/gpu/GrSurfaceDrawContext.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/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(GrRecordingContext*, GrSurfaceDrawContext*, SkCanvas*) override;
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// SkSL code.
class ClockwiseTestProcessor : public GrGeometryProcessor {
public:
static GrGeometryProcessor* Make(SkArenaAlloc* arena, bool readSkFragCoord) {
return arena->make([&](void* ptr) {
return new (ptr) ClockwiseTestProcessor(readSkFragCoord);
});
}
const char* name() const final { return "ClockwiseTestProcessor"; }
void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const final {
b->add32(fReadSkFragCoord);
}
GrGLSLGeometryProcessor* createGLSLInstance(const GrShaderCaps&) const final;
bool readSkFragCoord() const { return fReadSkFragCoord; }
private:
ClockwiseTestProcessor(bool readSkFragCoord)
: GrGeometryProcessor(kClockwiseTestProcessor_ClassID)
, fReadSkFragCoord(readSkFragCoord) {
this->setVertexAttributes(&gVertex, 1);
}
const bool fReadSkFragCoord;
using INHERITED = GrGeometryProcessor;
};
class GLSLClockwiseTestProcessor : public GrGLSLGeometryProcessor {
void setData(const GrGLSLProgramDataManager&,
const GrShaderCaps&,
const GrGeometryProcessor&) override {}
void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
const ClockwiseTestProcessor& proc = args.fGeomProc.cast<ClockwiseTestProcessor>();
args.fVaryingHandler->emitAttributes(proc);
gpArgs->fPositionVar.set(kFloat2_GrSLType, "position");
args.fFragBuilder->codeAppendf(
"half4 %s = sk_Clockwise ? half4(0,1,0,1) : half4(1,0,0,1);",
args.fOutputColor);
if (!proc.readSkFragCoord()) {
args.fFragBuilder->codeAppendf("const half4 %s = half4(1);", args.fOutputCoverage);
} else {
// Verify layout(origin_upper_left) on gl_FragCoord does not affect gl_FrontFacing.
args.fFragBuilder->codeAppendf("half4 %s = half4(min(half(sk_FragCoord.y), 1));",
args.fOutputCoverage);
}
}
};
GrGLSLGeometryProcessor* ClockwiseTestProcessor::createGLSLInstance(const GrShaderCaps&) const {
return new GLSLClockwiseTestProcessor;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Draw Op.
class ClockwiseTestOp : public GrDrawOp {
public:
DEFINE_OP_CLASS_ID
static GrOp::Owner Make(GrRecordingContext* context,
bool readSkFragCoord, int y = 0) {
return GrOp::Make<ClockwiseTestOp>(context, 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();
}
GrProgramInfo* createProgramInfo(const GrCaps* caps,
SkArenaAlloc* arena,
const GrSurfaceProxyView& writeView,
GrAppliedClip&& appliedClip,
const GrXferProcessor::DstProxyView& dstProxyView,
GrXferBarrierFlags renderPassXferBarriers,
GrLoadOp colorLoadOp) const {
GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(arena, fReadSkFragCoord);
return sk_gpu_test::CreateProgramInfo(caps, arena, writeView,
std::move(appliedClip), dstProxyView,
geomProc, SkBlendMode::kPlus,
GrPrimitiveType::kTriangleStrip,
renderPassXferBarriers, colorLoadOp);
}
GrProgramInfo* createProgramInfo(GrOpFlushState* flushState) const {
return this->createProgramInfo(&flushState->caps(),
flushState->allocator(),
flushState->writeView(),
flushState->detachAppliedClip(),
flushState->dstProxyView(),
flushState->renderPassBarriers(),
flushState->colorLoadOp());
}
void onPrePrepare(GrRecordingContext* context,
const GrSurfaceProxyView& writeView,
GrAppliedClip* clip,
const GrXferProcessor::DstProxyView& dstProxyView,
GrXferBarrierFlags renderPassXferBarriers,
GrLoadOp colorLoadOp) final {
SkArenaAlloc* arena = context->priv().recordTimeAllocator();
// This is equivalent to a GrOpFlushState::detachAppliedClip
GrAppliedClip appliedClip = clip ? std::move(*clip) : GrAppliedClip::Disabled();
fProgramInfo = this->createProgramInfo(context->priv().caps(), arena, writeView,
std::move(appliedClip), dstProxyView,
renderPassXferBarriers, colorLoadOp);
context->priv().recordProgramInfo(fProgramInfo);
}
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) {
fProgramInfo = this->createProgramInfo(flushState);
}
flushState->bindPipeline(*fProgramInfo, SkRect::MakeXYWH(0, fY, 100, 100));
flushState->bindBuffers(nullptr, nullptr, std::move(fVertexBuffer));
flushState->draw(4, 0);
}
sk_sp<GrBuffer> fVertexBuffer;
const bool fReadSkFragCoord;
const float fY;
// The program info (and both the GrPipeline and GrGeometryProcessor 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 GrGeometryProcessor pointers here bc they are
// guaranteed to have the same lifetime as the program info.
GrProgramInfo* fProgramInfo = nullptr;
friend class ::GrOp; // for ctor
using INHERITED = GrDrawOp;
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Test.
void ClockwiseGM::onDraw(GrRecordingContext* ctx, GrSurfaceDrawContext* rtc, SkCanvas* canvas) {
rtc->clear(SK_PMColor4fBLACK);
// Draw the test directly to the frame buffer.
rtc->addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
rtc->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 = GrSurfaceDrawContext::Make(
ctx, rtcColorType, nullptr, SkBackingFit::kExact, {100, 200}, SkSurfaceProps(),
1, GrMipmapped::kNo, GrProtected::kNo, kTopLeft_GrSurfaceOrigin,
SkBudgeted::kYes)) {
topLeftRTC->clear(SK_PMColor4fTRANSPARENT);
topLeftRTC->addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
topLeftRTC->addDrawOp(ClockwiseTestOp::Make(ctx, true, 100));
rtc->drawTexture(nullptr,
topLeftRTC->readSurfaceView(),
rtc->colorInfo().alphaType(),
GrSamplerState::Filter::kNearest,
GrSamplerState::MipmapMode::kNone,
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 = GrSurfaceDrawContext::Make(
ctx, rtcColorType, nullptr, SkBackingFit::kExact, {100, 200}, SkSurfaceProps(),
1, GrMipmapped::kNo, GrProtected::kNo, kBottomLeft_GrSurfaceOrigin,
SkBudgeted::kYes)) {
topLeftRTC->clear(SK_PMColor4fTRANSPARENT);
topLeftRTC->addDrawOp(ClockwiseTestOp::Make(ctx, false, 0));
topLeftRTC->addDrawOp(ClockwiseTestOp::Make(ctx, true, 100));
rtc->drawTexture(nullptr,
topLeftRTC->readSurfaceView(),
rtc->colorInfo().alphaType(),
GrSamplerState::Filter::kNearest,
GrSamplerState::MipmapMode::kNone,
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(); )
} // namespace
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