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 SkSweepGradient_DEFINED
9#define SkSweepGradient_DEFINED
10
11#include "src/shaders/gradients/SkGradientShaderPriv.h"
12
13class SkSweepGradient final : public SkGradientShaderBase {
14public:
15 SkSweepGradient(const SkPoint& center, SkScalar t0, SkScalar t1, const Descriptor&);
16
17 GradientType asAGradient(GradientInfo* info) const override;
18
19#if SK_SUPPORT_GPU
20 std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
21#endif
22
23 SkScalar getTBias() const { return fTBias; }
24
25 SkScalar getTScale() const { return fTScale; }
26
27protected:
28 void flatten(SkWriteBuffer& buffer) const override;
29
30 void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline,
31 SkRasterPipeline* postPipeline) const override;
32
33 skvm::F32 transformT(skvm::Builder*, skvm::Uniforms*,
34 skvm::F32 x, skvm::F32 y, skvm::I32* mask) const final;
35private:
36 SK_FLATTENABLE_HOOKS(SkSweepGradient)
37
38 const SkPoint fCenter;
39 const SkScalar fTBias,
40 fTScale;
41
42 friend class SkGradientShader;
43 typedef SkGradientShaderBase INHERITED;
44};
45
46#endif
47