1/*
2 * Copyright 2012 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkLinearGradient_DEFINED
9#define SkLinearGradient_DEFINED
10
11#include "src/shaders/gradients/SkGradientShaderPriv.h"
12
13class SkLinearGradient : public SkGradientShaderBase {
14public:
15 SkLinearGradient(const SkPoint pts[2], const Descriptor&);
16
17 GradientType asAGradient(GradientInfo* info) const override;
18#if SK_SUPPORT_GPU
19 std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
20#endif
21
22protected:
23 SkLinearGradient(SkReadBuffer& buffer);
24 void flatten(SkWriteBuffer& buffer) const override;
25#ifdef SK_ENABLE_LEGACY_SHADERCONTEXT
26 Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override;
27#endif
28
29 void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline,
30 SkRasterPipeline* postPipeline) const final;
31
32 skvm::F32 transformT(skvm::Builder*, skvm::Uniforms*,
33 skvm::Coord coord, skvm::I32* mask) const final;
34
35private:
36 SK_FLATTENABLE_HOOKS(SkLinearGradient)
37
38 class LinearGradient4fContext;
39
40 friend class SkGradientShader;
41 typedef SkGradientShaderBase INHERITED;
42 const SkPoint fStart;
43 const SkPoint fEnd;
44};
45
46#endif
47