chromium/third_party/skia/src/gpu/ganesh/effects/GrPorterDuffXferProcessor.cpp

/*
 * Copyright 2014 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/gpu/ganesh/effects/GrPorterDuffXferProcessor.h"

#include "include/core/SkBlendMode.h"
#include "include/core/SkColor.h"
#include "include/private/SkColorData.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkFloatingPoint.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/base/SkRandom.h"
#include "src/core/SkSLTypeShared.h"
#include "src/gpu/Blend.h"
#include "src/gpu/BlendFormula.h"
#include "src/gpu/KeyBuilder.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrProcessorAnalysis.h"
#include "src/gpu/ganesh/GrShaderCaps.h"
#include "src/gpu/ganesh/GrXferProcessor.h"
#include "src/gpu/ganesh/glsl/GrGLSLBlend.h"
#include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/ganesh/glsl/GrGLSLProgramDataManager.h"
#include "src/gpu/ganesh/glsl/GrGLSLUniformHandler.h"

#include <cstring>
#include <memory>
#include <string>

BlendFormula;

class PorterDuffXferProcessor : public GrXferProcessor { … };

///////////////////////////////////////////////////////////////////////////////

static void append_color_output(const PorterDuffXferProcessor& xp,
                                GrGLSLXPFragmentBuilder* fragBuilder,
                                BlendFormula::OutputType outputType, const char* output,
                                const char* inColor, const char* inCoverage) { … }

void PorterDuffXferProcessor::onAddToKey(const GrShaderCaps&, skgpu::KeyBuilder* b) const { … }

std::unique_ptr<GrXferProcessor::ProgramImpl> PorterDuffXferProcessor::makeProgramImpl() const { … }

///////////////////////////////////////////////////////////////////////////////

class ShaderPDXferProcessor : public GrXferProcessor { … };

///////////////////////////////////////////////////////////////////////////////


void ShaderPDXferProcessor::onAddToKey(const GrShaderCaps&, skgpu::KeyBuilder* b) const { … }

std::unique_ptr<GrXferProcessor::ProgramImpl> ShaderPDXferProcessor::makeProgramImpl() const { … }

///////////////////////////////////////////////////////////////////////////////

class PDLCDXferProcessor : public GrXferProcessor { … };

PDLCDXferProcessor::PDLCDXferProcessor(const SkPMColor4f& blendConstant, float alpha)
    : … { … }

sk_sp<const GrXferProcessor> PDLCDXferProcessor::Make(SkBlendMode mode,
                                                      const GrProcessorAnalysisColor& color) { … }

std::unique_ptr<GrXferProcessor::ProgramImpl> PDLCDXferProcessor::makeProgramImpl() const { … }

///////////////////////////////////////////////////////////////////////////////

constexpr GrPorterDuffXPFactory::GrPorterDuffXPFactory(SkBlendMode xfermode)
        : … { … }

const GrXPFactory* GrPorterDuffXPFactory::Get(SkBlendMode blendMode) { … }

sk_sp<const GrXferProcessor> GrPorterDuffXPFactory::makeXferProcessor(
        const GrProcessorAnalysisColor& color, GrProcessorAnalysisCoverage coverage,
        const GrCaps& caps, GrClampType clampType) const { … }

static inline GrXPFactory::AnalysisProperties analysis_properties(
        const GrProcessorAnalysisColor& color, const GrProcessorAnalysisCoverage& coverage,
        const GrCaps& caps, GrClampType clampType, SkBlendMode mode) { … }

GrXPFactory::AnalysisProperties GrPorterDuffXPFactory::analysisProperties(
        const GrProcessorAnalysisColor& color,
        const GrProcessorAnalysisCoverage& coverage,
        const GrCaps& caps,
        GrClampType clampType) const { … }

GR_DEFINE_XP_FACTORY_TEST(…)

#if defined(GPU_TEST_UTILS)
const GrXPFactory* GrPorterDuffXPFactory::TestGet(GrProcessorTestData* d) {
    SkBlendMode mode = SkBlendMode(d->fRandom->nextULessThan((int)SkBlendMode::kLastCoeffMode));
    return GrPorterDuffXPFactory::Get(mode);
}
#endif

void GrPorterDuffXPFactory::TestGetXPOutputTypes(const GrXferProcessor* xp,
                                                 int* outPrimary,
                                                 int* outSecondary) { … }

////////////////////////////////////////////////////////////////////////////////////////////////
// SrcOver Global functions
////////////////////////////////////////////////////////////////////////////////////////////////
const GrXferProcessor& GrPorterDuffXPFactory::SimpleSrcOverXP() { … }

sk_sp<const GrXferProcessor> GrPorterDuffXPFactory::MakeSrcOverXferProcessor(
        const GrProcessorAnalysisColor& color, GrProcessorAnalysisCoverage coverage,
        const GrCaps& caps) { … }

sk_sp<const GrXferProcessor> GrPorterDuffXPFactory::MakeNoCoverageXP(SkBlendMode blendmode) { … }

GrXPFactory::AnalysisProperties GrPorterDuffXPFactory::SrcOverAnalysisProperties(
        const GrProcessorAnalysisColor& color,
        const GrProcessorAnalysisCoverage& coverage,
        const GrCaps& caps,
        GrClampType clampType) { … }