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

/*
 * Copyright 2015 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/GrCustomXfermode.h"

#include "include/core/SkBlendMode.h"
#include "include/core/SkRefCnt.h"
#include "include/private/base/SkAssert.h"
#include "src/base/SkRandom.h"
#include "src/gpu/Blend.h"
#include "src/gpu/KeyBuilder.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrProcessorAnalysis.h"
#include "src/gpu/ganesh/GrProcessorUnitTest.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/GrGLSLUniformHandler.h"

#include <memory>
#include <string>

class GrGLSLProgramDataManager;
enum class GrClampType;

bool GrCustomXfermode::IsSupportedMode(SkBlendMode mode) { … }

///////////////////////////////////////////////////////////////////////////////
// Static helpers
///////////////////////////////////////////////////////////////////////////////

static constexpr skgpu::BlendEquation hw_blend_equation(SkBlendMode mode) { … }

static bool can_use_hw_blend_equation(skgpu::BlendEquation equation,
                                      GrProcessorAnalysisCoverage coverage, const GrCaps& caps) { … }

///////////////////////////////////////////////////////////////////////////////
// Xfer Processor
///////////////////////////////////////////////////////////////////////////////

class CustomXP : public GrXferProcessor { … };

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

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

bool CustomXP::onIsEqual(const GrXferProcessor& other) const { … }

GrXferBarrierType CustomXP::xferBarrierType(const GrCaps& caps) const { … }

void CustomXP::onGetBlendInfo(skgpu::BlendInfo* blendInfo) const { … }

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

// See the comment above GrXPFactory's definition about this warning suppression.
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
#endif
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnon-virtual-dtor"
#endif
class CustomXPFactory : public GrXPFactory { … };
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

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

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

GR_DEFINE_XP_FACTORY_TEST(…)
#if defined(GPU_TEST_UTILS)
const GrXPFactory* CustomXPFactory::TestGet(GrProcessorTestData* d) {
    int mode = d->fRandom->nextRangeU((int)SkBlendMode::kLastCoeffMode + 1,
                                      (int)SkBlendMode::kLastSeparableMode);

    return GrCustomXfermode::Get((SkBlendMode)mode);
}
#endif

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

const GrXPFactory* GrCustomXfermode::Get(SkBlendMode mode) { … }