| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkString.h" |
| #include "include/effects/SkLumaColorFilter.h" |
| #include "include/private/SkColorData.h" |
| #include "src/core/SkColorFilterBase.h" |
| #include "src/core/SkEffectPriv.h" |
| #include "src/core/SkRasterPipeline.h" |
| #include "src/core/SkVM.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "src/gpu/effects/generated/GrLumaColorFilterEffect.h" |
| #include "src/gpu/glsl/GrGLSLFragmentProcessor.h" |
| #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| #endif |
| |
| class SkLumaColorFilterImpl : public SkColorFilterBase { |
| public: |
| #if SK_SUPPORT_GPU |
| GrFPResult asFragmentProcessor(std::unique_ptr<GrFragmentProcessor> inputFP, |
| GrRecordingContext*, const GrColorInfo&) const override { |
| return GrFPSuccess(GrLumaColorFilterEffect::Make(std::move(inputFP))); |
| } |
| #endif |
| |
| static sk_sp<SkFlattenable> CreateProc(SkReadBuffer&) { |
| return SkLumaColorFilter::Make(); |
| } |
| |
| protected: |
| void flatten(SkWriteBuffer&) const override {} |
| |
| private: |
| Factory getFactory() const override { return CreateProc; } |
| const char* getTypeName() const override { return "SkLumaColorFilter"; } |
| |
| bool onAppendStages(const SkStageRec& rec, bool shaderIsOpaque) const override { |
| rec.fPipeline->append(SkRasterPipeline::bt709_luminance_or_luma_to_alpha); |
| rec.fPipeline->append(SkRasterPipeline::clamp_0); |
| rec.fPipeline->append(SkRasterPipeline::clamp_1); |
| return true; |
| } |
| |
| skvm::Color onProgram(skvm::Builder* p, skvm::Color c, SkColorSpace*, skvm::Uniforms*, |
| SkArenaAlloc*) const override { |
| return { |
| p->splat(0.0f), |
| p->splat(0.0f), |
| p->splat(0.0f), |
| clamp01(c.r * 0.2126f + c.g * 0.7152f + c.b * 0.0722f), |
| }; |
| } |
| |
| using INHERITED = SkColorFilterBase; |
| }; |
| |
| sk_sp<SkColorFilter> SkLumaColorFilter::Make() { |
| return sk_sp<SkColorFilter>(new SkLumaColorFilterImpl); |
| } |
| |
| void SkLumaColorFilter::RegisterFlattenable() { |
| SkFlattenable::Register("SkLumaColorFilter", SkLumaColorFilterImpl::CreateProc); |
| } |