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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 "GrAADistanceFieldPathRenderer.h" | 8 #include "GrAADistanceFieldPathRenderer.h" |
9 | 9 |
10 #include "GrBatchFlushState.h" | 10 #include "GrBatchFlushState.h" |
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74 } | 74 } |
75 delete fAtlas; | 75 delete fAtlas; |
76 | 76 |
77 #ifdef DF_PATH_TRACKING | 77 #ifdef DF_PATH_TRACKING |
78 SkDebugf("Cached paths: %d, freed paths: %d\n", g_NumCachedPaths, g_NumFreed
Paths); | 78 SkDebugf("Cached paths: %d, freed paths: %d\n", g_NumCachedPaths, g_NumFreed
Paths); |
79 #endif | 79 #endif |
80 } | 80 } |
81 | 81 |
82 //////////////////////////////////////////////////////////////////////////////// | 82 //////////////////////////////////////////////////////////////////////////////// |
83 bool GrAADistanceFieldPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) c
onst { | 83 bool GrAADistanceFieldPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) c
onst { |
84 // We don't currently apply the dash or factor it into the DF key. (skbug.co
m/5082) | 84 |
85 if (args.fStyle->pathEffect()) { | |
86 return false; | |
87 } | |
88 // TODO: Support inverse fill | 85 // TODO: Support inverse fill |
89 if (!args.fShaderCaps->shaderDerivativeSupport() || !args.fAntiAlias || | 86 if (!args.fShaderCaps->shaderDerivativeSupport() || !args.fAntiAlias || |
90 args.fStyle->isSimpleHairline() || args.fPath->isInverseFillType() || | 87 SkStrokeRec::kHairline_Style == args.fStroke->getStyle() || |
91 args.fPath->isVolatile()) { | 88 args.fPath->isInverseFillType() || args.fPath->isVolatile() || |
| 89 // We don't currently apply the dash or factor it into the DF key. (skbu
g.com/5082) |
| 90 args.fStroke->isDashed()) { |
92 return false; | 91 return false; |
93 } | 92 } |
94 | 93 |
95 // currently don't support perspective | 94 // currently don't support perspective |
96 if (args.fViewMatrix->hasPerspective()) { | 95 if (args.fViewMatrix->hasPerspective()) { |
97 return false; | 96 return false; |
98 } | 97 } |
99 | 98 |
100 // only support paths with bounds within kMediumMIP by kMediumMIP, | 99 // only support paths with bounds within kMediumMIP by kMediumMIP, |
101 // scaled to have bounds within 2.0f*kLargeMIP by 2.0f*kLargeMIP | 100 // scaled to have bounds within 2.0f*kLargeMIP by 2.0f*kLargeMIP |
102 // the goal is to accelerate rendering of lots of small paths that may be sc
aling | 101 // the goal is to accelerate rendering of lots of small paths that may be sc
aling |
103 SkScalar maxScale = args.fViewMatrix->getMaxScale(); | 102 SkScalar maxScale = args.fViewMatrix->getMaxScale(); |
104 #if 0 // This is more accurate but changes some GMs. TODO: Standalone change to
enable this. | |
105 SkRect bounds; | |
106 args.fStyle->adjustBounds(&bounds, args.fPath->getBounds()); | |
107 SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height()); | |
108 #else | |
109 const SkRect& bounds = args.fPath->getBounds(); | 103 const SkRect& bounds = args.fPath->getBounds(); |
110 SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height()); | 104 SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height()); |
111 const SkStrokeRec& stroke = args.fStyle->strokeRec(); | |
112 // Approximate stroked size by adding the maximum of the stroke width or 2x
the miter limit | 105 // Approximate stroked size by adding the maximum of the stroke width or 2x
the miter limit |
113 if (!stroke.isFillStyle()) { | 106 if (!args.fStroke->isFillStyle()) { |
114 SkScalar extraWidth = stroke.getWidth(); | 107 SkScalar extraWidth = args.fStroke->getWidth(); |
115 if (SkPaint::kMiter_Join == stroke.getJoin()) { | 108 if (SkPaint::kMiter_Join == args.fStroke->getJoin()) { |
116 extraWidth = SkTMax(extraWidth, 2.0f*stroke.getMiter()); | 109 extraWidth = SkTMax(extraWidth, 2.0f*args.fStroke->getMiter()); |
117 } | 110 } |
118 maxDim += extraWidth; | 111 maxDim += extraWidth; |
119 } | 112 } |
120 #endif | |
121 | 113 |
122 return maxDim <= kMediumMIP && maxDim * maxScale <= 2.0f*kLargeMIP; | 114 return maxDim <= kMediumMIP && maxDim * maxScale <= 2.0f*kLargeMIP; |
123 } | 115 } |
124 | 116 |
125 //////////////////////////////////////////////////////////////////////////////// | 117 //////////////////////////////////////////////////////////////////////////////// |
126 | 118 |
127 // padding around path bounds to allow for antialiased pixels | 119 // padding around path bounds to allow for antialiased pixels |
128 static const SkScalar kAntiAliasPad = 1.0f; | 120 static const SkScalar kAntiAliasPad = 1.0f; |
129 | 121 |
130 class AADistanceFieldPathBatch : public GrVertexBatch { | 122 class AADistanceFieldPathBatch : public GrVertexBatch { |
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553 fAtlas = args.fResourceProvider->createAtlas(kAlpha_8_GrPixelConfig, | 545 fAtlas = args.fResourceProvider->createAtlas(kAlpha_8_GrPixelConfig, |
554 ATLAS_TEXTURE_WIDTH, ATLAS_
TEXTURE_HEIGHT, | 546 ATLAS_TEXTURE_WIDTH, ATLAS_
TEXTURE_HEIGHT, |
555 NUM_PLOTS_X, NUM_PLOTS_Y, | 547 NUM_PLOTS_X, NUM_PLOTS_Y, |
556 &GrAADistanceFieldPathRende
rer::HandleEviction, | 548 &GrAADistanceFieldPathRende
rer::HandleEviction, |
557 (void*)this); | 549 (void*)this); |
558 if (!fAtlas) { | 550 if (!fAtlas) { |
559 return false; | 551 return false; |
560 } | 552 } |
561 } | 553 } |
562 | 554 |
563 // It's ok to ignore style's path effect because canDrawPath filtered out pa
th effects. | 555 AADistanceFieldPathBatch::Geometry geometry(*args.fStroke); |
564 AADistanceFieldPathBatch::Geometry geometry(args.fStyle->strokeRec()); | 556 if (SkStrokeRec::kFill_Style == args.fStroke->getStyle()) { |
565 if (args.fStyle->isSimpleFill()) { | |
566 geometry.fPath = *args.fPath; | 557 geometry.fPath = *args.fPath; |
567 } else { | 558 } else { |
568 args.fStyle->strokeRec().applyToPath(&geometry.fPath, *args.fPath); | 559 args.fStroke->applyToPath(&geometry.fPath, *args.fPath); |
569 } | 560 } |
570 geometry.fColor = args.fColor; | 561 geometry.fColor = args.fColor; |
571 geometry.fAntiAlias = args.fAntiAlias; | 562 geometry.fAntiAlias = args.fAntiAlias; |
572 // Note: this is the generation ID of the _original_ path. When a new path i
s | 563 // Note: this is the generation ID of the _original_ path. When a new path i
s |
573 // generated due to stroking it is important that the original path's id is
used | 564 // generated due to stroking it is important that the original path's id is
used |
574 // for caching. | 565 // for caching. |
575 geometry.fGenID = args.fPath->getGenerationID(); | 566 geometry.fGenID = args.fPath->getGenerationID(); |
576 | 567 |
577 SkAutoTUnref<GrDrawBatch> batch(AADistanceFieldPathBatch::Create(geometry, | 568 SkAutoTUnref<GrDrawBatch> batch(AADistanceFieldPathBatch::Create(geometry, |
578 *args.fView
Matrix, fAtlas, | 569 *args.fView
Matrix, fAtlas, |
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654 geometry.fGenID = random->nextU(); | 645 geometry.fGenID = random->nextU(); |
655 | 646 |
656 return AADistanceFieldPathBatch::Create(geometry, viewMatrix, | 647 return AADistanceFieldPathBatch::Create(geometry, viewMatrix, |
657 gTestStruct.fAtlas, | 648 gTestStruct.fAtlas, |
658 &gTestStruct.fPathCache, | 649 &gTestStruct.fPathCache, |
659 &gTestStruct.fPathList, | 650 &gTestStruct.fPathList, |
660 gammaCorrect); | 651 gammaCorrect); |
661 } | 652 } |
662 | 653 |
663 #endif | 654 #endif |
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