| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkComposeShader_DEFINED |
| #define SkComposeShader_DEFINED |
| |
| #include "include/core/SkBlendMode.h" |
| #include "src/shaders/SkShaderBase.h" |
| |
| class SkShader_Blend final : public SkShaderBase { |
| public: |
| SkShader_Blend(SkBlendMode mode, sk_sp<SkShader> dst, sk_sp<SkShader> src) |
| : fDst(std::move(dst)) |
| , fSrc(std::move(src)) |
| , fMode(mode) |
| {} |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; |
| #endif |
| |
| protected: |
| SkShader_Blend(SkReadBuffer&); |
| void flatten(SkWriteBuffer&) const override; |
| bool onAppendStages(const SkStageRec&) const override; |
| skvm::Color onProgram(skvm::Builder*, skvm::Coord device, skvm::Coord local, skvm::Color paint, |
| const SkMatrixProvider&, const SkMatrix* localM, |
| SkFilterQuality, const SkColorInfo& dst, |
| skvm::Uniforms*, SkArenaAlloc*) const override; |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkShader_Blend) |
| |
| sk_sp<SkShader> fDst; |
| sk_sp<SkShader> fSrc; |
| const SkBlendMode fMode; |
| |
| typedef SkShaderBase INHERITED; |
| }; |
| |
| class SkShader_Lerp final : public SkShaderBase { |
| public: |
| SkShader_Lerp(float weight, sk_sp<SkShader> dst, sk_sp<SkShader> src) |
| : fDst(std::move(dst)) |
| , fSrc(std::move(src)) |
| , fWeight(weight) |
| { |
| SkASSERT(weight >= 0 && weight <= 1); |
| } |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; |
| #endif |
| |
| protected: |
| SkShader_Lerp(SkReadBuffer&); |
| void flatten(SkWriteBuffer&) const override; |
| bool onAppendStages(const SkStageRec&) const override; |
| skvm::Color onProgram(skvm::Builder*, skvm::Coord device, skvm::Coord local, skvm::Color paint, |
| const SkMatrixProvider&, const SkMatrix* localM, |
| SkFilterQuality, const SkColorInfo& dst, |
| skvm::Uniforms*, SkArenaAlloc*) const override; |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkShader_Lerp) |
| |
| sk_sp<SkShader> fDst; |
| sk_sp<SkShader> fSrc; |
| const float fWeight; |
| |
| typedef SkShaderBase INHERITED; |
| }; |
| |
| #endif |