skia2/bench/VertexColorSpaceBench.cpp

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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "bench/Benchmark.h"
#include "include/core/SkString.h"
#include "include/gpu/GrContext.h"
#include "include/private/SkHalf.h"
#include "src/core/SkColorSpacePriv.h"
#include "src/gpu/GrContextPriv.h"
#include "src/gpu/GrGeometryProcessor.h"
#include "src/gpu/GrMemoryPool.h"
#include "src/gpu/GrRenderTargetContext.h"
#include "src/gpu/GrRenderTargetContextPriv.h"
#include "src/gpu/SkGr.h"
#include "src/gpu/glsl/GrGLSLColorSpaceXformHelper.h"
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/glsl/GrGLSLGeometryProcessor.h"
#include "src/gpu/glsl/GrGLSLVarying.h"
#include "src/gpu/glsl/GrGLSLVertexGeoBuilder.h"
#include "src/gpu/ops/GrMeshDrawOp.h"
namespace {
enum Mode {
kBaseline_Mode, // Do the wrong thing, but quickly.
kFloat_Mode, // Transform colors on CPU, use float4 attributes.
kHalf_Mode, // Transform colors on CPU, use half4 attributes.
kShader_Mode, // Use ubyte4 attributes, transform colors on GPU (vertex shader).
};
class GP : public GrGeometryProcessor {
public:
GP(Mode mode, sk_sp<GrColorSpaceXform> colorSpaceXform)
: INHERITED(kVertexColorSpaceBenchGP_ClassID)
, fMode(mode)
, fColorSpaceXform(std::move(colorSpaceXform)) {
fInPosition = {"inPosition", kFloat2_GrVertexAttribType, kFloat2_GrSLType};
switch (fMode) {
case kBaseline_Mode:
case kShader_Mode:
fInColor = {"inColor", kUByte4_norm_GrVertexAttribType, kHalf4_GrSLType};
break;
case kFloat_Mode:
fInColor = {"inColor", kFloat4_GrVertexAttribType, kHalf4_GrSLType};
break;
case kHalf_Mode:
fInColor = {"inColor", kHalf4_GrVertexAttribType, kHalf4_GrSLType};
break;
}
this->setVertexAttributes(&fInPosition, 2);
}
const char* name() const override { return "VertexColorXformGP"; }
GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const override {
class GLSLGP : public GrGLSLGeometryProcessor {
public:
void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
const GP& gp = args.fGP.cast<GP>();
GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
varyingHandler->emitAttributes(gp);
// Setup color
GrGLSLVarying varying(kHalf4_GrSLType);
varyingHandler->addVarying("color", &varying);
vertBuilder->codeAppendf("half4 color = %s;", gp.fInColor.name());
if (kShader_Mode == gp.fMode) {
fColorSpaceHelper.emitCode(uniformHandler, gp.fColorSpaceXform.get(),
kVertex_GrShaderFlag);
SkString xformedColor;
vertBuilder->appendColorGamutXform(&xformedColor, "color", &fColorSpaceHelper);
vertBuilder->codeAppendf("color = %s;", xformedColor.c_str());
vertBuilder->codeAppend("color = half4(color.rgb * color.a, color.a);");
}
vertBuilder->codeAppendf("%s = color;", varying.vsOut());
fragBuilder->codeAppendf("%s = %s;", args.fOutputColor, varying.fsIn());
// Position
this->writeOutputPosition(args.fVertBuilder, gpArgs, gp.fInPosition.name());
// Coverage
fragBuilder->codeAppendf("%s = half4(1);", args.fOutputCoverage);
}
void setData(const GrGLSLProgramDataManager& pdman,
const GrPrimitiveProcessor& primProc,
FPCoordTransformIter&&) override {
const GP& gp = primProc.cast<GP>();
fColorSpaceHelper.setData(pdman, gp.fColorSpaceXform.get());
}
GrGLSLColorSpaceXformHelper fColorSpaceHelper;
};
return new GLSLGP();
}
void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const override {
b->add32(fMode);
b->add32(GrColorSpaceXform::XformKey(fColorSpaceXform.get()));
}
private:
Mode fMode;
sk_sp<GrColorSpaceXform> fColorSpaceXform;
Attribute fInPosition;
Attribute fInColor;
typedef GrGeometryProcessor INHERITED;
};
class Op : public GrMeshDrawOp {
public:
DEFINE_OP_CLASS_ID
const char* name() const override { return "VertColorXformOp"; }
Op(GrColor color)
: INHERITED(ClassID())
, fMode(kBaseline_Mode)
, fColor(color) {
this->setBounds(SkRect::MakeWH(100.f, 100.f), HasAABloat::kNo, IsHairline::kNo);
}
Op(const SkColor4f& color4f, Mode mode)
: INHERITED(ClassID())
, fMode(mode)
, fColor4f(color4f) {
SkASSERT(kFloat_Mode == fMode || kHalf_Mode == mode);
this->setBounds(SkRect::MakeWH(100.f, 100.f), HasAABloat::kNo, IsHairline::kNo);
}
Op(GrColor color, sk_sp<GrColorSpaceXform> colorSpaceXform)
: INHERITED(ClassID())
, fMode(kShader_Mode)
, fColor(color)
, fColorSpaceXform(std::move(colorSpaceXform)) {
this->setBounds(SkRect::MakeWH(100.f, 100.f), HasAABloat::kNo, IsHairline::kNo);
}
FixedFunctionFlags fixedFunctionFlags() const override {
return FixedFunctionFlags::kNone;
}
GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*,
bool hasMixedSampledCoverage, GrClampType) override {
return GrProcessorSet::EmptySetAnalysis();
}
private:
friend class ::GrOpMemoryPool;
void onPrepareDraws(Target* target) override {
sk_sp<GrGeometryProcessor> gp(new GP(fMode, fColorSpaceXform));
size_t vertexStride = gp->vertexStride();
const int kVertexCount = 1024;
sk_sp<const GrBuffer> vertexBuffer;
int firstVertex = 0;
void* verts = target->makeVertexSpace(vertexStride, kVertexCount, &vertexBuffer,
&firstVertex);
if (!verts) {
return;
}
const float dx = 100.0f / kVertexCount;
if (kFloat_Mode == fMode) {
struct V {
SkPoint fPos;
SkColor4f fColor;
};
SkASSERT(sizeof(V) == vertexStride);
V* v = (V*)verts;
for (int i = 0; i < kVertexCount; i += 2) {
v[i + 0].fPos.set(dx * i, 0.0f);
v[i + 0].fColor = fColor4f;
v[i + 1].fPos.set(dx * i, 100.0f);
v[i + 1].fColor = fColor4f;
}
} else if (kHalf_Mode == fMode) {
struct V {
SkPoint fPos;
uint64_t fColor;
};
SkASSERT(sizeof(V) == vertexStride);
uint64_t color;
Sk4h halfColor = SkFloatToHalf_finite_ftz(Sk4f::Load(&fColor4f));
color = (uint64_t)halfColor[0] << 48 |
(uint64_t)halfColor[1] << 32 |
(uint64_t)halfColor[2] << 16 |
(uint64_t)halfColor[3] << 0;
V* v = (V*)verts;
for (int i = 0; i < kVertexCount; i += 2) {
v[i + 0].fPos.set(dx * i, 0.0f);
v[i + 0].fColor = color;
v[i + 1].fPos.set(dx * i, 100.0f);
v[i + 1].fColor = color;
}
} else {
struct V {
SkPoint fPos;
GrColor fColor;
};
SkASSERT(sizeof(V) == vertexStride);
V* v = (V*)verts;
for (int i = 0; i < kVertexCount; i += 2) {
v[i + 0].fPos.set(dx * i, 0.0f);
v[i + 0].fColor = fColor;
v[i + 1].fPos.set(dx * i, 100.0f);
v[i + 1].fColor = fColor;
}
}
GrMesh* mesh = target->allocMesh(GrPrimitiveType::kTriangleStrip);
mesh->setNonIndexedNonInstanced(kVertexCount);
mesh->setVertexData(std::move(vertexBuffer), firstVertex);
target->recordDraw(gp, mesh, 1, GrPrimitiveType::kTriangleStrip);
}
void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
flushState->executeDrawsAndUploadsForMeshDrawOp(
this, chainBounds, GrProcessorSet::MakeEmptySet());
}
Mode fMode;
GrColor fColor;
SkColor4f fColor4f;
sk_sp<GrColorSpaceXform> fColorSpaceXform;
typedef GrMeshDrawOp INHERITED;
};
}
class VertexColorSpaceBench : public Benchmark {
public:
VertexColorSpaceBench(Mode mode, const char* name) : fMode(mode) {
fName = "vertexcolorspace";
fName.appendf("_%s", name);
}
bool isSuitableFor(Backend backend) override { return kGPU_Backend == backend; }
const char* onGetName() override { return fName.c_str(); }
void onDraw(int loops, SkCanvas* canvas) override {
GrContext* context = canvas->getGrContext();
SkASSERT(context);
if (kHalf_Mode == fMode &&
!context->priv().caps()->halfFloatVertexAttributeSupport()) {
return;
}
GrOpMemoryPool* pool = context->priv().opMemoryPool();
auto p3 = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB,
SkNamedGamut::kDCIP3);
auto xform = GrColorSpaceXform::Make(sk_srgb_singleton(), kUnpremul_SkAlphaType,
p3.get(), kUnpremul_SkAlphaType);
SkRandom r;
const int kDrawsPerLoop = 32;
for (int i = 0; i < loops; ++i) {
auto rtc = context->priv().makeDeferredRenderTargetContext(
SkBackingFit::kApprox, 100, 100, GrColorType::kRGBA_8888, p3);
SkASSERT(rtc);
for (int j = 0; j < kDrawsPerLoop; ++j) {
SkColor c = r.nextU();
std::unique_ptr<GrDrawOp> op = nullptr;
switch (fMode) {
case kBaseline_Mode:
op = pool->allocate<Op>(SkColorToPremulGrColor(c));
break;
case kShader_Mode:
op = pool->allocate<Op>(SkColorToUnpremulGrColor(c), xform);
break;
case kHalf_Mode:
case kFloat_Mode: {
SkColor4f c4f = SkColor4f::FromColor(c);
c4f = xform->apply(c4f);
op = pool->allocate<Op>(c4f, fMode);
}
}
rtc->priv().testingOnly_addDrawOp(std::move(op));
}
context->flush();
}
}
private:
SkString fName;
Mode fMode;
typedef Benchmark INHERITED;
};
DEF_BENCH(return new VertexColorSpaceBench(kBaseline_Mode, "baseline"));
DEF_BENCH(return new VertexColorSpaceBench(kFloat_Mode, "float"));
DEF_BENCH(return new VertexColorSpaceBench(kHalf_Mode, "half"));
DEF_BENCH(return new VertexColorSpaceBench(kShader_Mode, "shader"));