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1 /* | |
2 * Copyright 2015 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 GrColorProcessor_DEFINED | |
9 #define GrColorProcessor_DEFINED | |
10 | |
11 #include "GrFragmentProcessor.h" | |
12 | |
13 class GrInvariantOutput; | |
14 | |
15 /** | |
16 * This is a simple GrFragmentProcessor that simply outputs a constant color. It may do one of the | |
egdaniel
2015/03/04 20:22:34
maybe "This is a simple GrFragmentProcessor that s
bsalomon
2015/03/31 19:33:42
Done. :)
| |
17 * following with its input color: ignore it, multiply it by the constant color, multiply its alpha | |
egdaniel
2015/03/04 20:22:34
, or multiply
bsalomon
2015/03/31 19:33:42
Done.
| |
18 * by the constant color and ignore the input color's r, g, and b. | |
19 */ | |
20 class GrColorProcessor : public GrFragmentProcessor { | |
egdaniel
2015/03/04 20:22:34
Can we call this GrContColorProcessor, or somethin
bsalomon
2015/03/31 19:33:42
Done.
| |
21 public: | |
22 enum InputMode { | |
23 kIgnore_InputMode, | |
24 kModulateRGBA_InputMode, | |
25 kModulateA_InputMode, | |
26 | |
27 kLastInputMode = kModulateA_InputMode | |
28 }; | |
29 static const int kInputModeCnt = kLastInputMode + 1; | |
30 | |
31 static GrFragmentProcessor* Create(GrColor color, InputMode mode) { | |
32 return SkNEW_ARGS(GrColorProcessor, (color, mode)); | |
33 } | |
34 | |
35 ~GrColorProcessor() SK_OVERRIDE {} | |
36 | |
37 const char* name() const SK_OVERRIDE { return "Color"; } | |
38 | |
39 void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVE RRIDE; | |
40 | |
41 GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; | |
42 | |
43 GrColor color() const { return fColor; } | |
44 | |
45 InputMode inputMode() const { return fMode; } | |
46 | |
47 private: | |
48 GrColorProcessor(GrColor color, InputMode mode) : fColor(color), fMode(mode) { | |
49 this->initClassID<GrColorProcessor>(); | |
50 } | |
51 | |
52 bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE; | |
53 | |
54 void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE; | |
55 | |
56 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | |
57 | |
58 GrColor fColor; | |
59 InputMode fMode; | |
60 | |
61 typedef GrFragmentProcessor INHERITED; | |
62 }; | |
63 | |
64 #endif | |
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