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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 #include "GrProcOptInfo.h" | 8 #include "GrProcOptInfo.h" |
9 | 9 |
10 #include "GrFragmentProcessor.h" | 10 #include "GrFragmentProcessor.h" |
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41 fInOut.reset(out); | 41 fInOut.reset(out); |
42 this->internalCalc(stages, stageCount, false); | 42 this->internalCalc(stages, stageCount, false); |
43 } | 43 } |
44 | 44 |
45 void GrProcOptInfo::internalCalc(const GrFragmentStage* stages, | 45 void GrProcOptInfo::internalCalc(const GrFragmentStage* stages, |
46 int stageCount, | 46 int stageCount, |
47 bool initWillReadFragmentPosition) { | 47 bool initWillReadFragmentPosition) { |
48 fFirstEffectStageIndex = 0; | 48 fFirstEffectStageIndex = 0; |
49 fInputColorIsUsed = true; | 49 fInputColorIsUsed = true; |
50 fInputColor = fInOut.color(); | 50 fInputColor = fInOut.color(); |
51 fReadsDst = false; | |
52 fReadsFragPosition = initWillReadFragmentPosition; | 51 fReadsFragPosition = initWillReadFragmentPosition; |
53 | 52 |
54 for (int i = 0; i < stageCount; ++i) { | 53 for (int i = 0; i < stageCount; ++i) { |
55 const GrFragmentProcessor* processor = stages[i].processor(); | 54 const GrFragmentProcessor* processor = stages[i].processor(); |
56 fInOut.resetWillUseInputColor(); | 55 fInOut.resetWillUseInputColor(); |
57 processor->computeInvariantOutput(&fInOut); | 56 processor->computeInvariantOutput(&fInOut); |
58 SkDEBUGCODE(fInOut.validate()); | 57 SkDEBUGCODE(fInOut.validate()); |
59 if (!fInOut.willUseInputColor()) { | 58 if (!fInOut.willUseInputColor()) { |
60 fFirstEffectStageIndex = i; | 59 fFirstEffectStageIndex = i; |
61 fInputColorIsUsed = false; | 60 fInputColorIsUsed = false; |
62 // Reset these since we don't care if previous stages read these val
ues | 61 // Reset these since we don't care if previous stages read these val
ues |
63 fReadsDst = false; | |
64 fReadsFragPosition = initWillReadFragmentPosition; | 62 fReadsFragPosition = initWillReadFragmentPosition; |
65 } | 63 } |
66 if (processor->willReadDstColor()) { | |
67 fReadsDst = true; | |
68 } | |
69 if (processor->willReadFragmentPosition()) { | 64 if (processor->willReadFragmentPosition()) { |
70 fReadsFragPosition = true; | 65 fReadsFragPosition = true; |
71 } | 66 } |
72 if (kRGBA_GrColorComponentFlags == fInOut.validFlags()) { | 67 if (kRGBA_GrColorComponentFlags == fInOut.validFlags()) { |
73 fFirstEffectStageIndex = i + 1; | 68 fFirstEffectStageIndex = i + 1; |
74 fInputColor = fInOut.color(); | 69 fInputColor = fInOut.color(); |
75 fInputColorIsUsed = true; | 70 fInputColorIsUsed = true; |
76 // Since we are clearing all previous color stages we are in a state
where we have found | 71 // Since we are clearing all previous color stages we are in a state
where we have found |
77 // zero stages that don't multiply the inputColor. | 72 // zero stages that don't multiply the inputColor. |
78 fInOut.resetNonMulStageFound(); | 73 fInOut.resetNonMulStageFound(); |
79 // Reset these since we don't care if previous stages read these val
ues | 74 // Reset these since we don't care if previous stages read these val
ues |
80 fReadsDst = false; | |
81 fReadsFragPosition = initWillReadFragmentPosition; | 75 fReadsFragPosition = initWillReadFragmentPosition; |
82 } | 76 } |
83 } | 77 } |
84 } | 78 } |
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