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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkNormalSource_DEFINED | 8 #ifndef SkNormalSource_DEFINED |
9 #define SkNormalSource_DEFINED | 9 #define SkNormalSource_DEFINED |
10 | 10 |
11 #include "SkFlattenable.h" | 11 #include "SkFlattenable.h" |
12 | 12 |
13 /** Abstract class that generates or reads in normals for use by SkLightingShade
r. | 13 /** Abstract class that generates or reads in normals for use by SkLightingShade
r. |
14 */ | 14 */ |
15 class SK_API SkNormalSource : public SkFlattenable { | 15 class SK_API SkNormalSource : public SkFlattenable { |
16 public: | 16 public: |
17 virtual ~SkNormalSource() override; | 17 virtual ~SkNormalSource() override; |
18 | 18 |
19 #if SK_SUPPORT_GPU | 19 #if SK_SUPPORT_GPU |
20 /** Returns a fragment processor that takes no input and outputs a normal (a
lready rotated) | 20 /** Returns a fragment processor that takes no input and outputs a normal (a
lready rotated) |
21 as its output color. To be used as a child fragment processor. | 21 as its output color. To be used as a child fragment processor. |
22 */ | 22 */ |
23 virtual sk_sp<GrFragmentProcessor> asFragmentProcessor( | 23 virtual sk_sp<GrFragmentProcessor> asFragmentProcessor(const SkShader::AsFPA
rgs&) const = 0; |
24 GrContext* context, | |
25 const SkMatrix& viewM, | |
26 const SkMatrix* localMatrix, | |
27 SkFilterQuality filterQuality, | |
28 SkSourceGammaTreatment gammaTreatment) const = 0; | |
29 #endif | 24 #endif |
30 | 25 |
31 class Provider { | 26 class Provider { |
32 public: | 27 public: |
33 virtual ~Provider() {}; | 28 virtual ~Provider() {}; |
34 | 29 |
35 /** Called for each span of the object being drawn on the CPU. Your subc
lass should set | 30 /** Called for each span of the object being drawn on the CPU. Your subc
lass should set |
36 the appropriate normals that correspond to the specified device coor
dinates. | 31 the appropriate normals that correspond to the specified device coor
dinates. |
37 */ | 32 */ |
38 virtual void fillScanLine(int x, int y, SkPoint3 output[], int count) co
nst = 0; | 33 virtual void fillScanLine(int x, int y, SkPoint3 output[], int count) co
nst = 0; |
(...skipping 28 matching lines...) Expand all Loading... |
67 | 62 |
68 /** Returns a normal source that provides straight-up normals only (0, 0, 1)
. | 63 /** Returns a normal source that provides straight-up normals only (0, 0, 1)
. |
69 */ | 64 */ |
70 static sk_sp<SkNormalSource> MakeFlat(); | 65 static sk_sp<SkNormalSource> MakeFlat(); |
71 | 66 |
72 SK_DEFINE_FLATTENABLE_TYPE(SkNormalSource) | 67 SK_DEFINE_FLATTENABLE_TYPE(SkNormalSource) |
73 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() | 68 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |
74 }; | 69 }; |
75 | 70 |
76 #endif | 71 #endif |
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