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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 |
| (...skipping 15 matching lines...) Expand all Loading... |
| 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(GrProcessorDataManager*, GrTexture*
, | 36 static const GrFragmentProcessor* Create(GrTexture*, bool swapRedAndBlue, PM
Conversion, |
| 37 bool swapRedAndBlue, PMConversion,
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 bool swapsRedAndBlue() const { return fSwapRedAndBlue; } | 41 bool swapsRedAndBlue() const { return fSwapRedAndBlue; } |
| 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 |
| 48 // multiple times for a given context. | 48 // multiple times for a given context. |
| 49 static void TestForPreservingPMConversions(GrContext* context, | 49 static void TestForPreservingPMConversions(GrContext* context, |
| 50 PMConversion* PMToUPMRule, | 50 PMConversion* PMToUPMRule, |
| 51 PMConversion* UPMToPMRule); | 51 PMConversion* UPMToPMRule); |
| 52 | 52 |
| 53 private: | 53 private: |
| 54 GrConfigConversionEffect(GrProcessorDataManager*, | 54 GrConfigConversionEffect(GrTexture*, |
| 55 GrTexture*, | |
| 56 bool swapRedAndBlue, | 55 bool swapRedAndBlue, |
| 57 PMConversion pmConversion, | 56 PMConversion pmConversion, |
| 58 const SkMatrix& matrix); | 57 const SkMatrix& matrix); |
| 59 | 58 |
| 60 GrGLFragmentProcessor* onCreateGLInstance() const override; | 59 GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 61 | 60 |
| 62 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; | 61 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; |
| 63 | 62 |
| 64 bool onIsEqual(const GrFragmentProcessor&) const override; | 63 bool onIsEqual(const GrFragmentProcessor&) const override; |
| 65 | 64 |
| 66 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; | 65 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| 67 | 66 |
| 68 bool fSwapRedAndBlue; | 67 bool fSwapRedAndBlue; |
| 69 PMConversion fPMConversion; | 68 PMConversion fPMConversion; |
| 70 | 69 |
| 71 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 70 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 72 | 71 |
| 73 typedef GrSingleTextureEffect INHERITED; | 72 typedef GrSingleTextureEffect INHERITED; |
| 74 }; | 73 }; |
| 75 | 74 |
| 76 #endif | 75 #endif |
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