| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkImageShader_DEFINED |
| #define SkImageShader_DEFINED |
| |
| #include "include/core/SkImage.h" |
| #include "src/shaders/SkBitmapProcShader.h" |
| #include "src/shaders/SkShaderBase.h" |
| |
| // private subclass of SkStageUpdater |
| class SkImageStageUpdater; |
| |
| class SkImageShader : public SkShaderBase { |
| public: |
| static sk_sp<SkShader> Make(sk_sp<SkImage>, |
| SkTileMode tmx, |
| SkTileMode tmy, |
| const SkSamplingOptions&, |
| const SkMatrix* localMatrix, |
| bool clampAsIfUnpremul = false); |
| |
| bool isOpaque() const override; |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; |
| #endif |
| |
| static SkM44 CubicResamplerMatrix(float B, float C); |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkImageShader) |
| |
| SkImageShader(sk_sp<SkImage>, |
| SkTileMode tmx, |
| SkTileMode tmy, |
| const SkSamplingOptions&, |
| const SkMatrix* localMatrix, |
| bool clampAsIfUnpremul = false); |
| |
| void flatten(SkWriteBuffer&) const override; |
| #ifdef SK_ENABLE_LEGACY_SHADERCONTEXT |
| Context* onMakeContext(const ContextRec&, SkArenaAlloc* storage) const override; |
| #endif |
| SkImage* onIsAImage(SkMatrix*, SkTileMode*) const override; |
| |
| bool onAppendStages(const SkStageRec&) const override; |
| SkStageUpdater* onAppendUpdatableStages(const SkStageRec&) const override; |
| |
| skvm::Color onProgram(skvm::Builder*, skvm::Coord device, skvm::Coord local, skvm::Color paint, |
| const SkMatrixProvider&, const SkMatrix* localM, const SkColorInfo& dst, |
| skvm::Uniforms* uniforms, SkArenaAlloc*) const override; |
| |
| bool doStages(const SkStageRec&, SkImageStageUpdater* = nullptr) const; |
| |
| sk_sp<SkImage> fImage; |
| const SkSamplingOptions fSampling; |
| const SkTileMode fTileModeX; |
| const SkTileMode fTileModeY; |
| const bool fClampAsIfUnpremul; |
| |
| friend class SkShaderBase; |
| using INHERITED = SkShaderBase; |
| |
| // for legacy unflattening |
| static sk_sp<SkFlattenable> PreSamplingCreate(SkReadBuffer&); |
| }; |
| |
| #endif |