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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 GrConfigConversionEffect_DEFINED | 8 #ifndef GrConfigConversionEffect_DEFINED |
9 #define GrConfigConversionEffect_DEFINED | 9 #define GrConfigConversionEffect_DEFINED |
10 | 10 |
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26 enum PMConversion { | 26 enum PMConversion { |
27 kNone_PMConversion = 0, | 27 kNone_PMConversion = 0, |
28 kMulByAlpha_RoundUp_PMConversion, | 28 kMulByAlpha_RoundUp_PMConversion, |
29 kMulByAlpha_RoundDown_PMConversion, | 29 kMulByAlpha_RoundDown_PMConversion, |
30 kDivByAlpha_RoundUp_PMConversion, | 30 kDivByAlpha_RoundUp_PMConversion, |
31 kDivByAlpha_RoundDown_PMConversion, | 31 kDivByAlpha_RoundDown_PMConversion, |
32 | 32 |
33 kPMConversionCnt | 33 kPMConversionCnt |
34 }; | 34 }; |
35 | 35 |
36 static const GrFragmentProcessor* Create(GrTexture*, const GrSwizzle&, PMCon
version, | 36 static sk_sp<GrFragmentProcessor> Make(GrTexture*, const GrSwizzle&, PMConve
rsion, |
37 const SkMatrix&); | 37 const SkMatrix&); |
38 | 38 |
39 const char* name() const override { return "Config Conversion"; } | 39 const char* name() const override { return "Config Conversion"; } |
40 | 40 |
41 const GrSwizzle& swizzle() const { return fSwizzle; } | 41 const GrSwizzle& swizzle() const { return fSwizzle; } |
42 PMConversion pmConversion() const { return fPMConversion; } | 42 PMConversion pmConversion() const { return fPMConversion; } |
43 | 43 |
44 // This function determines whether it is possible to choose PM->UPM and UPM
->PM conversions | 44 // This function determines whether it is possible to choose PM->UPM and UPM
->PM conversions |
45 // for which in any PM->UPM->PM->UPM sequence the two UPM values are the sam
e. This means that | 45 // for which in any PM->UPM->PM->UPM sequence the two UPM values are the sam
e. This means that |
46 // if pixels are read back to a UPM buffer, written back to PM to the GPU, a
nd read back again | 46 // if pixels are read back to a UPM buffer, written back to PM to the GPU, a
nd read back again |
47 // both reads will produce the same result. This test is quite expensive and
should not be run | 47 // both reads will produce the same result. This test is quite expensive and
should not be run |
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66 | 66 |
67 GrSwizzle fSwizzle; | 67 GrSwizzle fSwizzle; |
68 PMConversion fPMConversion; | 68 PMConversion fPMConversion; |
69 | 69 |
70 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 70 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
71 | 71 |
72 typedef GrSingleTextureEffect INHERITED; | 72 typedef GrSingleTextureEffect INHERITED; |
73 }; | 73 }; |
74 | 74 |
75 #endif | 75 #endif |
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