| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPictureShader_DEFINED |
| #define SkPictureShader_DEFINED |
| |
| #include "include/core/SkTileMode.h" |
| #include "src/shaders/SkShaderBase.h" |
| #include <atomic> |
| |
| class SkArenaAlloc; |
| class SkBitmap; |
| class SkPicture; |
| |
| /* |
| * An SkPictureShader can be used to draw SkPicture-based patterns. |
| * |
| * The SkPicture is first rendered into a tile, which is then used to shade the area according |
| * to specified tiling rules. |
| */ |
| class SkPictureShader : public SkShaderBase { |
| public: |
| static sk_sp<SkShader> Make(sk_sp<SkPicture>, SkTileMode, SkTileMode, SkFilterMode, |
| const SkMatrix*, const SkRect*); |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override; |
| #endif |
| |
| protected: |
| SkPictureShader(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, const SkColorInfo& dst, |
| skvm::Uniforms* uniforms, SkArenaAlloc* alloc) const override; |
| |
| #ifdef SK_ENABLE_LEGACY_SHADERCONTEXT |
| Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override; |
| #endif |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkPictureShader) |
| |
| SkPictureShader(sk_sp<SkPicture>, SkTileMode, SkTileMode, SkFilterMode, |
| const SkMatrix*, const SkRect*); |
| |
| sk_sp<SkShader> rasterShader(const SkMatrix&, SkTCopyOnFirstWrite<SkMatrix>* localMatrix, |
| SkColorType dstColorType, SkColorSpace* dstColorSpace) const; |
| |
| class PictureShaderContext : public Context { |
| public: |
| PictureShaderContext( |
| const SkPictureShader&, const ContextRec&, sk_sp<SkShader> bitmapShader, SkArenaAlloc*); |
| |
| uint32_t getFlags() const override; |
| |
| void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; |
| |
| sk_sp<SkShader> fBitmapShader; |
| SkShaderBase::Context* fBitmapShaderContext; |
| void* fBitmapShaderContextStorage; |
| |
| using INHERITED = Context; |
| }; |
| |
| sk_sp<SkPicture> fPicture; |
| SkRect fTile; |
| SkTileMode fTmx, fTmy; |
| SkFilterMode fFilter; |
| |
| using INHERITED = SkShaderBase; |
| }; |
| |
| #endif // SkPictureShader_DEFINED |