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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 "SkRecordOpts.h" | 8 #include "SkRecordOpts.h" |
9 | 9 |
10 #include "SkRecordPattern.h" | 10 #include "SkRecordPattern.h" |
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104 | 104 |
105 SkPaint* drawPaint = pattern->second<SkPaint>(); | 105 SkPaint* drawPaint = pattern->second<SkPaint>(); |
106 if (drawPaint == NULL) { | 106 if (drawPaint == NULL) { |
107 // We can just give the draw the SaveLayer's paint. | 107 // We can just give the draw the SaveLayer's paint. |
108 // TODO(mtklein): figure out how to do this clearly | 108 // TODO(mtklein): figure out how to do this clearly |
109 return false; | 109 return false; |
110 } | 110 } |
111 | 111 |
112 const uint32_t layerColor = layerPaint->getColor(); | 112 const uint32_t layerColor = layerPaint->getColor(); |
113 const uint32_t drawColor = drawPaint->getColor(); | 113 const uint32_t drawColor = drawPaint->getColor(); |
114 if (!IsOnlyAlpha(layerColor) || !IsOpaque(drawColor) || | 114 if (!IsOnlyAlpha(layerColor) || HasAnyEffect(*layerPaint) || CantFoldAlp ha(*drawPaint)) { |
115 HasAnyEffect(*layerPaint) || CantFoldAlpha(*drawPaint)) { | 115 // Too fancy for us. |
116 // Too fancy for us. Actually, as long as layerColor is just an alp ha | |
117 // we can blend it into drawColor's alpha; drawColor doesn't strictl y have to be opaque. | |
118 return false; | 116 return false; |
119 } | 117 } |
120 | 118 |
121 drawPaint->setColor(SkColorSetA(drawColor, SkColorGetA(layerColor))); | 119 drawPaint->setColor(SkColorSetA(drawColor, |
120 SkFloatToIntRound(SkColorGetA(drawColor) * | |
mtklein
2015/01/13 18:48:20
Let's use SkMulDiv255Round?
Kimmo Kinnunen
2015/01/14 13:07:51
Done.
| |
121 SkColorGetA(layerColor ) / 255.0f))); | |
122 return KillSaveLayerAndRestore(record, begin); | 122 return KillSaveLayerAndRestore(record, begin); |
123 } | 123 } |
124 | 124 |
125 static bool KillSaveLayerAndRestore(SkRecord* record, unsigned saveLayerInde x) { | 125 static bool KillSaveLayerAndRestore(SkRecord* record, unsigned saveLayerInde x) { |
126 record->replace<NoOp>(saveLayerIndex); // SaveLayer | 126 record->replace<NoOp>(saveLayerIndex); // SaveLayer |
127 record->replace<NoOp>(saveLayerIndex+2); // Restore | 127 record->replace<NoOp>(saveLayerIndex+2); // Restore |
128 return true; | 128 return true; |
129 } | 129 } |
130 | 130 |
131 static bool HasAnyEffect(const SkPaint& paint) { | 131 static bool HasAnyEffect(const SkPaint& paint) { |
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143 // path effect, mask filter and/or rasterizer. | 143 // path effect, mask filter and/or rasterizer. |
144 // TODO: most likely the looper and only some xfer modes are the hard | 144 // TODO: most likely the looper and only some xfer modes are the hard |
145 // constraints | 145 // constraints |
146 static bool CantFoldAlpha(const SkPaint& paint) { | 146 static bool CantFoldAlpha(const SkPaint& paint) { |
147 return paint.getXfermode() || | 147 return paint.getXfermode() || |
148 paint.getColorFilter() || | 148 paint.getColorFilter() || |
149 paint.getLooper() || | 149 paint.getLooper() || |
150 paint.getImageFilter(); | 150 paint.getImageFilter(); |
151 } | 151 } |
152 | 152 |
153 static bool IsOpaque(SkColor color) { | |
154 return SkColorGetA(color) == SK_AlphaOPAQUE; | |
155 } | |
156 static bool IsOnlyAlpha(SkColor color) { | 153 static bool IsOnlyAlpha(SkColor color) { |
157 return SK_ColorTRANSPARENT == SkColorSetA(color, SK_AlphaTRANSPARENT); | 154 return SK_ColorTRANSPARENT == SkColorSetA(color, SK_AlphaTRANSPARENT); |
158 } | 155 } |
159 }; | 156 }; |
160 void SkRecordNoopSaveLayerDrawRestores(SkRecord* record) { | 157 void SkRecordNoopSaveLayerDrawRestores(SkRecord* record) { |
161 SaveLayerDrawRestoreNooper pass; | 158 SaveLayerDrawRestoreNooper pass; |
162 apply(&pass, record); | 159 apply(&pass, record); |
163 } | 160 } |
164 | 161 |
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