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skia2/gm/attributes.cpp
Greg Daniel 719239cd69 Move all Ganesh source files into ganesh subdirectory. 
Change-Id: I238d29ba0250224fa593845ae65192653f58faff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/528156
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
2022-04-07 21:06:50 +00:00

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/*
* Copyright 2021 Google LLC
*
* 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/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/gpu/GrRecordingContext.h"
#include "src/core/SkCanvasPriv.h"
#include "src/gpu/KeyBuilder.h"
#include "src/gpu/ganesh/GrBuffer.h"
#include "src/gpu/ganesh/GrGeometryProcessor.h"
#include "src/gpu/ganesh/GrGpuBuffer.h"
#include "src/gpu/ganesh/GrOpFlushState.h"
#include "src/gpu/ganesh/GrProcessor.h"
#include "src/gpu/ganesh/GrProcessorSet.h"
#include "src/gpu/ganesh/GrProgramInfo.h"
#include "src/gpu/ganesh/GrResourceProvider.h"
#include "src/gpu/ganesh/GrShaderVar.h"
#include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/ganesh/glsl/GrGLSLVertexGeoBuilder.h"
#include "src/gpu/ganesh/ops/GrDrawOp.h"
#include "src/gpu/ganesh/ops/GrOp.h"
#include "src/gpu/ganesh/v1/SurfaceDrawContext_v1.h"
#include "tools/gpu/ProxyUtils.h"
#include <memory>
#include <vector>
class GrAppliedClip;
class GrGLSLProgramDataManager;
namespace {
enum class AttrMode {
kAuto,
kManual,
kWacky
};
class AttributeTestProcessor : public GrGeometryProcessor {
public:
static GrGeometryProcessor* Make(SkArenaAlloc* arena, AttrMode mode) {
return arena->make([&](void* ptr) { return new (ptr) AttributeTestProcessor(mode); });
}
const char* name() const final { return "AttributeTestProcessor"; }
void addToKey(const GrShaderCaps&, skgpu::KeyBuilder* b) const final {
b->add32(static_cast<uint32_t>(fMode));
}
std::unique_ptr<ProgramImpl> makeProgramImpl(const GrShaderCaps&) const final;
private:
AttributeTestProcessor(AttrMode mode)
: GrGeometryProcessor(kAttributeTestProcessor_ClassID), fMode(mode) {
switch (fMode) {
case AttrMode::kAuto:
fAttributes.emplace_back("pos", kFloat2_GrVertexAttribType, SkSLType::kFloat2);
fAttributes.emplace_back("color", kUByte4_norm_GrVertexAttribType,
SkSLType::kHalf4);
this->setVertexAttributesWithImplicitOffsets(fAttributes.data(),
fAttributes.size());
break;
case AttrMode::kManual:
// Same result as kAuto but with explicitly specified offsets and stride.
fAttributes.emplace_back("pos", kFloat2_GrVertexAttribType, SkSLType::kFloat2, 0);
fAttributes.emplace_back("color", kUByte4_norm_GrVertexAttribType,
SkSLType::kHalf4, 8);
this->setVertexAttributes(fAttributes.data(), fAttributes.size(), 12);
break;
case AttrMode::kWacky:
// 0 thru 7 : float2 aliased to "pos0" and "pos1"
// 8 thru 11: pad
// 12 thru 15: unorm4 "color"
// 16 thru 19: pad
fAttributes.emplace_back("pos0", kFloat2_GrVertexAttribType, SkSLType::kFloat2, 0);
fAttributes.emplace_back("pos1", kFloat2_GrVertexAttribType, SkSLType::kFloat2, 0);
fAttributes.emplace_back("color", kUByte4_norm_GrVertexAttribType,
SkSLType::kHalf4, 12);
this->setVertexAttributes(fAttributes.data(), fAttributes.size(), 20);
break;
}
}
const AttrMode fMode;
std::vector<Attribute> fAttributes;
using INHERITED = GrGeometryProcessor;
};
std::unique_ptr<GrGeometryProcessor::ProgramImpl> AttributeTestProcessor::makeProgramImpl(
const GrShaderCaps&) const {
class Impl : public ProgramImpl {
public:
void setData(const GrGLSLProgramDataManager&,
const GrShaderCaps&,
const GrGeometryProcessor&) override {}
private:
void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
const AttributeTestProcessor& proc = args.fGeomProc.cast<AttributeTestProcessor>();
args.fVaryingHandler->emitAttributes(proc);
if (proc.fMode == AttrMode::kWacky) {
args.fVertBuilder->codeAppend("float2 pos = pos0 + pos1;");
}
args.fFragBuilder->codeAppendf("half4 %s;", args.fOutputColor);
args.fVaryingHandler->addPassThroughAttribute(GrShaderVar("color", SkSLType::kHalf4),
args.fOutputColor);
gpArgs->fPositionVar.set(SkSLType::kFloat2, "pos");
args.fFragBuilder->codeAppendf("const half4 %s = half4(1);", args.fOutputCoverage);
}
};
return std::make_unique<Impl>();
}
class AttributeTestOp : public GrDrawOp {
public:
DEFINE_OP_CLASS_ID
static GrOp::Owner Make(GrRecordingContext* context, AttrMode mode, const SkRect& r) {
return GrOp::Make<AttributeTestOp>(context, mode, r);
}
private:
AttributeTestOp(AttrMode mode, SkRect rect) : GrDrawOp(ClassID()), fMode(mode), fRect(rect) {
this->setBounds(fRect, HasAABloat::kNo, IsHairline::kNo);
}
const char* name() const override { return "AttributeTestOp"; }
FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*, GrClampType) override {
return GrProcessorSet::EmptySetAnalysis();
}
GrProgramInfo* createProgramInfo(const GrCaps* caps,
SkArenaAlloc* arena,
const GrSurfaceProxyView& writeView,
bool usesMSAASurface,
GrAppliedClip&& appliedClip,
const GrDstProxyView& dstProxyView,
GrXferBarrierFlags renderPassXferBarriers,
GrLoadOp colorLoadOp) const {
GrGeometryProcessor* geomProc = AttributeTestProcessor::Make(arena, fMode);
return sk_gpu_test::CreateProgramInfo(caps,
arena,
writeView,
usesMSAASurface,
std::move(appliedClip),
dstProxyView,
geomProc,
SkBlendMode::kSrcOver,
GrPrimitiveType::kTriangleStrip,
renderPassXferBarriers,
colorLoadOp);
}
GrProgramInfo* createProgramInfo(GrOpFlushState* flushState) const {
return this->createProgramInfo(&flushState->caps(),
flushState->allocator(),
flushState->writeView(),
flushState->usesMSAASurface(),
flushState->detachAppliedClip(),
flushState->dstProxyView(),
flushState->renderPassBarriers(),
flushState->colorLoadOp());
}
void onPrePrepare(GrRecordingContext* context,
const GrSurfaceProxyView& writeView,
GrAppliedClip* clip,
const GrDstProxyView& dstProxyView,
GrXferBarrierFlags renderPassXferBarriers,
GrLoadOp colorLoadOp) final {
SkArenaAlloc* arena = context->priv().recordTimeAllocator();
// DMSAA is not supported on DDL.
bool usesMSAASurface = writeView.asRenderTargetProxy()->numSamples() > 1;
// This is equivalent to a GrOpFlushState::detachAppliedClip
GrAppliedClip appliedClip = clip ? std::move(*clip) : GrAppliedClip::Disabled();
fProgramInfo = this->createProgramInfo(context->priv().caps(),
arena,
writeView,
usesMSAASurface,
std::move(appliedClip),
dstProxyView,
renderPassXferBarriers,
colorLoadOp);
context->priv().recordProgramInfo(fProgramInfo);
}
template <typename V> void makeVB(GrOpFlushState* flushState, const SkRect rect) {
V v[4];
v[0].p = {rect.left() , rect.top() };
v[1].p = {rect.right(), rect.top() };
v[2].p = {rect.left() , rect.bottom()};
v[3].p = {rect.right(), rect.bottom()};
v[0].color = SK_ColorRED;
v[1].color = SK_ColorGREEN;
v[2].color = SK_ColorYELLOW;
v[3].color = SK_ColorMAGENTA;
fVertexBuffer = flushState->resourceProvider()->createBuffer(
sizeof(v), GrGpuBufferType::kVertex, kStatic_GrAccessPattern, v);
}
void onPrepare(GrOpFlushState* flushState) override {
if (fMode == AttrMode::kWacky) {
struct V {
SkPoint p;
uint32_t pad0;
uint32_t color;
uint32_t pad1;
};
SkRect rect {fRect.fLeft/2.f, fRect.fTop/2.f, fRect.fRight/2.f, fRect.fBottom/2.f};
this->makeVB<V>(flushState, rect);
} else {
struct V {
SkPoint p;
uint32_t color;
};
this->makeVB<V>(flushState, fRect);
}
}
void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
if (!fVertexBuffer) {
return;
}
if (!fProgramInfo) {
fProgramInfo = this->createProgramInfo(flushState);
}
flushState->bindPipeline(*fProgramInfo, fRect);
flushState->bindBuffers(nullptr, nullptr, std::move(fVertexBuffer));
flushState->draw(4, 0);
}
sk_sp<GrBuffer> fVertexBuffer;
const AttrMode fMode;
const SkRect fRect;
// 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;
};
} // namespace
namespace skiagm {
/**
* This is a GPU-backend specific test that exercises explicit and implicit attribute offsets and
* strides.
*/
class AttributesGM : public GpuGM {
SkString onShortName() override { return SkString("attributes"); }
SkISize onISize() override { return {120, 340}; }
DrawResult onDraw(GrRecordingContext*, SkCanvas*, SkString* errorMsg) override;
};
DrawResult AttributesGM::onDraw(GrRecordingContext* rc, SkCanvas* canvas, SkString* errorMsg) {
auto sdc = SkCanvasPriv::TopDeviceSurfaceDrawContext(canvas);
if (!sdc) {
*errorMsg = kErrorMsg_DrawSkippedGpuOnly;
return DrawResult::kSkip;
}
sdc->clear(SK_PMColor4fBLACK);
// Draw the test directly to the frame buffer.
auto r = SkRect::MakeXYWH(10, 10, 100, 100);
for (AttrMode m : {AttrMode::kAuto, AttrMode::kManual, AttrMode::kWacky}) {
sdc->addDrawOp(AttributeTestOp::Make(rc, m, r));
r.offset(0, 110);
}
return DrawResult::kOk;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
DEF_GM( return new AttributesGM(); )
} // namespace skiagm
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