| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkNormalMapSource_DEFINED |
| #define SkNormalMapSource_DEFINED |
| |
| #include "src/core/SkNormalSource.h" |
| |
| class SkNormalMapSourceImpl : public SkNormalSource { |
| public: |
| SkNormalMapSourceImpl(sk_sp<SkShader> mapShader, const SkMatrix& invCTM) |
| : fMapShader(std::move(mapShader)) |
| , fInvCTM(invCTM) {} |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs& args) const override; |
| #endif |
| |
| SkNormalSource::Provider* asProvider(const SkShaderBase::ContextRec& rec, |
| SkArenaAlloc* alloc) const override; |
| |
| protected: |
| void flatten(SkWriteBuffer& buf) const override; |
| |
| bool computeNormTotalInverse(const SkShaderBase::ContextRec& rec, |
| SkMatrix* normTotalInverse) const; |
| |
| private: |
| SK_FLATTENABLE_HOOKS(SkNormalMapSourceImpl) |
| |
| class Provider : public SkNormalSource::Provider { |
| public: |
| Provider(const SkNormalMapSourceImpl& source, SkShaderBase::Context* mapContext); |
| |
| void fillScanLine(int x, int y, SkPoint3 output[], int count) const override; |
| |
| private: |
| const SkNormalMapSourceImpl& fSource; |
| SkShaderBase::Context* fMapContext; |
| |
| typedef SkNormalSource::Provider INHERITED; |
| }; |
| |
| sk_sp<SkShader> fMapShader; |
| SkMatrix fInvCTM; // Inverse of the canvas total matrix, used for rotating normals. |
| |
| friend class SkNormalSource; |
| |
| typedef SkNormalSource INHERITED; |
| }; |
| |
| #endif |
| |