1/*
2 * Copyright 2016 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 Sk4fLinearGradient_DEFINED
9#define Sk4fLinearGradient_DEFINED
10
11#include "src/shaders/gradients/Sk4fGradientBase.h"
12#include "src/shaders/gradients/SkLinearGradient.h"
13
14class SkLinearGradient::
15LinearGradient4fContext final : public GradientShaderBase4fContext {
16public:
17    LinearGradient4fContext(const SkLinearGradient&, const ContextRec&);
18
19    void shadeSpan(int x, int y, SkPMColor dst[], int count) override;
20
21private:
22    using INHERITED = GradientShaderBase4fContext;
23
24    template<ApplyPremul, SkTileMode>
25    class LinearIntervalProcessor;
26
27    template <ApplyPremul premul>
28    void shadePremulSpan(int x, int y, SkPMColor dst[], int count,
29                         float bias0, float bias1) const;
30
31    template <ApplyPremul premul, SkTileMode tileMode>
32    void shadeSpanInternal(int x, int y, SkPMColor dst[], int count,
33                           float bias0, float bias1) const;
34
35    const Sk4fGradientInterval* findInterval(SkScalar fx) const;
36
37    mutable const Sk4fGradientInterval* fCachedInterval;
38};
39
40#endif // Sk4fLinearGradient_DEFINED
41