1 | /* |
2 | * Copyright 2019 Google LLC |
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 | /************************************************************************************************** |
9 | *** This file was autogenerated from GrRGBToHSLFilterEffect.fp; do not modify. |
10 | **************************************************************************************************/ |
11 | #ifndef GrRGBToHSLFilterEffect_DEFINED |
12 | #define GrRGBToHSLFilterEffect_DEFINED |
13 | #include "include/core/SkTypes.h" |
14 | #include "include/core/SkM44.h" |
15 | |
16 | #include "src/gpu/GrCoordTransform.h" |
17 | #include "src/gpu/GrFragmentProcessor.h" |
18 | class GrRGBToHSLFilterEffect : public GrFragmentProcessor { |
19 | public: |
20 | #include "include/private/SkColorData.h" |
21 | |
22 | SkPMColor4f constantOutputForConstantInput(const SkPMColor4f& c) const override { |
23 | const auto p = (c.fG < c.fB) ? SkPMColor4f{c.fB, c.fG, -1, 2 / 3.f} |
24 | : SkPMColor4f{c.fG, c.fB, 0, -1 / 3.f}, |
25 | q = (c.fR < p[0]) ? SkPMColor4f{p[0], c.fR, p[1], p[3]} |
26 | : SkPMColor4f{c.fR, p[0], p[1], p[2]}; |
27 | |
28 | const auto eps = 0.0001f, // matching SkSL/ColorMatrix half4 epsilon |
29 | pmV = q[0], pmC = pmV - std::min(q[1], q[2]), pmL = pmV - pmC * 0.5f, |
30 | H = std::abs(q[3] + (q[1] - q[2]) / (pmC * 6 + eps)), |
31 | S = pmC / (c.fA + eps - std::abs(pmL * 2 - c.fA)), L = pmL / (c.fA + eps); |
32 | |
33 | return {H, S, L, c.fA}; |
34 | } |
35 | static std::unique_ptr<GrFragmentProcessor> Make() { |
36 | return std::unique_ptr<GrFragmentProcessor>(new GrRGBToHSLFilterEffect()); |
37 | } |
38 | GrRGBToHSLFilterEffect(const GrRGBToHSLFilterEffect& src); |
39 | std::unique_ptr<GrFragmentProcessor> clone() const override; |
40 | const char* name() const override { return "RGBToHSLFilterEffect" ; } |
41 | |
42 | private: |
43 | GrRGBToHSLFilterEffect() |
44 | : INHERITED(kGrRGBToHSLFilterEffect_ClassID, |
45 | (OptimizationFlags)(kConstantOutputForConstantInput_OptimizationFlag | |
46 | kPreservesOpaqueInput_OptimizationFlag)) {} |
47 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
48 | void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override; |
49 | bool onIsEqual(const GrFragmentProcessor&) const override; |
50 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST |
51 | typedef GrFragmentProcessor INHERITED; |
52 | }; |
53 | #endif |
54 | |