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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 GrAAStrokeRectBatch_DEFINED | 8 #ifndef GrAAStrokeRectBatch_DEFINED |
9 #define GrAAStrokeRectBatch_DEFINED | 9 #define GrAAStrokeRectBatch_DEFINED |
10 | 10 |
11 #include "GrColor.h" | 11 #include "GrColor.h" |
12 #include "GrTypes.h" | |
13 #include "GrVertexBatch.h" | |
14 #include "SkMatrix.h" | |
15 #include "SkRect.h" | |
16 | 12 |
| 13 class GrDrawBatch; |
17 class GrResourceProvider; | 14 class GrResourceProvider; |
| 15 class SkMatrix; |
| 16 struct SkRect; |
18 | 17 |
19 class GrAAStrokeRectBatch : public GrVertexBatch { | 18 namespace GrAAStrokeRectBatch { |
20 public: | |
21 DEFINE_BATCH_CLASS_ID | |
22 | 19 |
23 // TODO support AA rotated stroke rects by copying around view matrices | 20 GrDrawBatch* Create(GrColor color, |
24 struct Geometry { | 21 const SkMatrix& viewMatrix, |
25 GrColor fColor; | 22 const SkRect& devOutside, |
26 SkRect fDevOutside; | 23 const SkRect& devOutsideAssist, |
27 SkRect fDevOutsideAssist; | 24 const SkRect& devInside, |
28 SkRect fDevInside; | 25 bool miterStroke); |
29 bool fMiterStroke; | |
30 }; | |
31 | 26 |
32 static GrDrawBatch* Create(const Geometry& geometry, const SkMatrix& viewMat
rix) { | |
33 return new GrAAStrokeRectBatch(geometry, viewMatrix); | |
34 } | |
35 | |
36 const char* name() const override { return "AAStrokeRect"; } | |
37 | |
38 void getInvariantOutputColor(GrInitInvariantOutput* out) const override { | |
39 // When this is called on a batch, there is only one geometry bundle | |
40 out->setKnownFourComponents(fGeoData[0].fColor); | |
41 } | |
42 | |
43 void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override { | |
44 out->setUnknownSingleComponent(); | |
45 } | |
46 | |
47 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } | |
48 | |
49 private: | |
50 void onPrepareDraws(Target*) override; | |
51 void initBatchTracker(const GrPipelineOptimizations&) override; | |
52 | |
53 GrAAStrokeRectBatch(const Geometry& geometry, const SkMatrix& viewMatrix) | |
54 : INHERITED(ClassID()) { | |
55 fBatch.fViewMatrix = viewMatrix; | |
56 fGeoData.push_back(geometry); | |
57 | |
58 // If we have miterstroke then we inset devOutside and outset devOutside
Assist, so we need | |
59 // the join for proper bounds | |
60 fBounds = geometry.fDevOutside; | |
61 fBounds.join(geometry.fDevOutsideAssist); | |
62 } | |
63 | |
64 | |
65 static const int kMiterIndexCnt = 3 * 24; | |
66 static const int kMiterVertexCnt = 16; | |
67 static const int kNumMiterRectsInIndexBuffer = 256; | |
68 | |
69 static const int kBevelIndexCnt = 48 + 36 + 24; | |
70 static const int kBevelVertexCnt = 24; | |
71 static const int kNumBevelRectsInIndexBuffer = 256; | |
72 | |
73 static const GrIndexBuffer* GetIndexBuffer(GrResourceProvider* resourceProvi
der, | |
74 bool miterStroke); | |
75 | |
76 GrColor color() const { return fBatch.fColor; } | |
77 bool usesLocalCoords() const { return fBatch.fUsesLocalCoords; } | |
78 bool canTweakAlphaForCoverage() const { return fBatch.fCanTweakAlphaForCover
age; } | |
79 bool colorIgnored() const { return fBatch.fColorIgnored; } | |
80 const SkMatrix& viewMatrix() const { return fBatch.fViewMatrix; } | |
81 bool miterStroke() const { return fBatch.fMiterStroke; } | |
82 bool coverageIgnored() const { return fBatch.fCoverageIgnored; } | |
83 | |
84 bool onCombineIfPossible(GrBatch* t, const GrCaps&) override; | |
85 | |
86 void generateAAStrokeRectGeometry(void* vertices, | |
87 size_t offset, | |
88 size_t vertexStride, | |
89 int outerVertexNum, | |
90 int innerVertexNum, | |
91 GrColor color, | |
92 const SkRect& devOutside, | |
93 const SkRect& devOutsideAssist, | |
94 const SkRect& devInside, | |
95 bool miterStroke, | |
96 bool tweakAlphaForCoverage) const; | |
97 | |
98 struct BatchTracker { | |
99 SkMatrix fViewMatrix; | |
100 GrColor fColor; | |
101 bool fUsesLocalCoords; | |
102 bool fColorIgnored; | |
103 bool fCoverageIgnored; | |
104 bool fMiterStroke; | |
105 bool fCanTweakAlphaForCoverage; | |
106 }; | |
107 | |
108 BatchTracker fBatch; | |
109 SkSTArray<1, Geometry, true> fGeoData; | |
110 | |
111 typedef GrVertexBatch INHERITED; | |
112 }; | 27 }; |
113 | 28 |
114 | |
115 #endif | 29 #endif |
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