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1 /* | |
2 * Copyright 2011 Google Inc. | |
mtklein
2014/08/02 14:06:28
2014?
| |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #include "SkPaint.h" | |
9 #include "SkPathEffect.h" | |
10 #include "SkPictureContentInfo.h" | |
11 | |
12 bool SkPictureContentInfo::suitableForGpuRasterization(GrContext* context, const char **reason, | |
13 int sampleCount) const { | |
14 // TODO: the heuristic used here needs to be refined | |
15 static const int kNumPaintWithPathEffectUsesTol = 1; | |
16 static const int kNumAAConcavePaths = 5; | |
17 | |
18 SkASSERT(fNumAAHairlineConcavePaths <= fNumAAConcavePaths); | |
19 | |
20 int numNonDashedPathEffects = fNumPaintWithPathEffectUses - | |
21 fNumFastPathDashEffects; | |
22 | |
23 bool suitableForDash = (0 == fNumPaintWithPathEffectUses) || | |
24 (numNonDashedPathEffects < kNumPaintWithPathEffectUse sTol | |
25 && 0 == sampleCount); | |
26 | |
27 bool ret = suitableForDash && | |
28 (fNumAAConcavePaths - fNumAAHairlineConcavePaths) | |
29 < kNumAAConcavePaths; | |
30 if (!ret && NULL != reason) { | |
31 if (!suitableForDash) { | |
32 if (0 != sampleCount) { | |
33 *reason = "Can't use multisample on dash effect."; | |
34 } else { | |
35 *reason = "Too many non dashed path effects."; | |
36 } | |
37 } else if ((fNumAAConcavePaths - fNumAAHairlineConcavePaths) | |
38 >= kNumAAConcavePaths) { | |
39 *reason = "Too many anti-aliased concave paths."; | |
40 } else { | |
41 *reason = "Unknown reason for GPU unsuitability."; | |
42 } | |
43 } | |
44 return ret; | |
45 } | |
46 | |
47 void SkPictureContentInfo::onDrawPoints(size_t count, const SkPaint& paint) { | |
48 if (paint.getPathEffect() != NULL) { | |
49 SkPathEffect::DashInfo info; | |
50 SkPathEffect::DashType dashType = paint.getPathEffect()->asADash(&info); | |
51 if (2 == count && SkPaint::kRound_Cap != paint.getStrokeCap() && | |
52 SkPathEffect::kDash_DashType == dashType && 2 == info.fCount) { | |
53 ++fNumFastPathDashEffects; | |
54 } | |
55 } | |
56 } | |
57 | |
58 void SkPictureContentInfo::onDrawPath(const SkPath& path, const SkPaint& paint) { | |
59 if (paint.isAntiAlias() && !path.isConvex()) { | |
60 ++fNumAAConcavePaths; | |
61 | |
62 if (SkPaint::kStroke_Style == paint.getStyle() && | |
63 0 == paint.getStrokeWidth()) { | |
64 ++fNumAAHairlineConcavePaths; | |
65 } | |
66 } | |
67 } | |
68 | |
69 void SkPictureContentInfo::onAddPaintPtr(const SkPaint* paint) { | |
70 if (NULL != paint && NULL != paint->getPathEffect()) { | |
71 ++fNumPaintWithPathEffectUses; | |
72 } | |
73 } | |
74 | |
75 void SkPictureContentInfo::set(const SkPictureContentInfo& src) { | |
76 fNumOperations = src.fNumOperations; | |
77 fNumTexts = src.fNumTexts; | |
78 fNumPaintWithPathEffectUses = src.fNumPaintWithPathEffectUses; | |
79 fNumFastPathDashEffects = src.fNumFastPathDashEffects; | |
80 fNumAAConcavePaths = src.fNumAAConcavePaths; | |
81 fNumAAHairlineConcavePaths = src.fNumAAHairlineConcavePaths; | |
82 } | |
83 | |
84 void SkPictureContentInfo::reset() { | |
85 fNumOperations = 0; | |
86 fNumTexts = 0; | |
87 fNumPaintWithPathEffectUses = 0; | |
88 fNumFastPathDashEffects = 0; | |
89 fNumAAConcavePaths = 0; | |
90 fNumAAHairlineConcavePaths = 0; | |
91 } | |
92 | |
93 void SkPictureContentInfo::swap(SkPictureContentInfo* other) { | |
94 SkTSwap(fNumOperations, other->fNumOperations); | |
95 SkTSwap(fNumTexts, other->fNumTexts); | |
96 SkTSwap(fNumFastPathDashEffects, other->fNumFastPathDashEffects); | |
97 SkTSwap(fNumAAConcavePaths, other->fNumAAConcavePaths); | |
98 SkTSwap(fNumAAHairlineConcavePaths, other->fNumAAHairlineConcavePaths); | |
99 } | |
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