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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 GrTInstanceBatch_DEFINED | 8 #ifndef GrTInstanceBatch_DEFINED |
9 #define GrTInstanceBatch_DEFINED | 9 #define GrTInstanceBatch_DEFINED |
10 | 10 |
11 #include "GrVertexBatch.h" | 11 #include "GrVertexBatch.h" |
12 | 12 |
13 #include "GrBatchFlushState.h" | 13 #include "GrBatchFlushState.h" |
14 | 14 |
15 /** | 15 /** |
16 * GrTInstanceBatch is an optional template to help with writing batches | 16 * GrTInstanceBatch is an optional template to help with writing batches |
17 * To use this template, The 'Impl' must define the following statics: | 17 * To use this template, The 'Impl' must define the following statics: |
18 * A Geometry struct | 18 * A Geometry struct |
19 * | 19 * |
20 * static const int kVertsPerInstance | 20 * static const int kVertsPerInstance |
21 * static const int kIndicesPerInstance | 21 * static const int kIndicesPerInstance |
22 * | 22 * |
23 * const char* Name() | 23 * const char* Name() |
24 * | 24 * |
| 25 * void InvariantOutputCoverage(GrInitInvariantOutput* out) |
| 26 * |
| 27 * void SetBounds(const Geometry& seedGeometry, SkRect* outBounds) |
| 28 * |
25 * bool CanCombine(const Geometry& mine, const Geometry& theirs, | 29 * bool CanCombine(const Geometry& mine, const Geometry& theirs, |
26 * const GrPipelineOptimizations&) | 30 * const GrPipelineOptimizations&) |
27 * | 31 * |
28 * const GrGeometryProcessor* CreateGP(const Geometry& seedGeometry, | 32 * const GrGeometryProcessor* CreateGP(const Geometry& seedGeometry, |
29 * const GrPipelineOptimizations& opts) | 33 * const GrPipelineOptimizations& opts) |
30 * | 34 * |
31 * const GrIndexBuffer* GetIndexBuffer(GrResourceProvider*) | 35 * const GrIndexBuffer* GetIndexBuffer(GrResourceProvider*) |
32 * | 36 * |
33 * Tesselate(intptr_t vertices, size_t vertexStride, const Geometry& geo, | 37 * Tesselate(intptr_t vertices, size_t vertexStride, const Geometry& geo, |
34 * const GrPipelineOptimizations& opts) | 38 * const GrPipelineOptimizations& opts) |
35 */ | 39 */ |
36 template <typename Impl> | 40 template <typename Impl> |
37 class GrTInstanceBatch : public GrVertexBatch { | 41 class GrTInstanceBatch : public GrVertexBatch { |
38 public: | 42 public: |
39 typedef typename Impl::Geometry Geometry; | 43 typedef typename Impl::Geometry Geometry; |
40 | 44 |
41 static GrTInstanceBatch* Create() { | 45 static GrTInstanceBatch* Create() { |
42 return SkNEW(GrTInstanceBatch); | 46 return SkNEW(GrTInstanceBatch); |
43 } | 47 } |
44 | 48 |
45 const char* name() const override { return Impl::Name(); } | 49 const char* name() const override { return Impl::Name(); } |
46 | 50 |
47 void getInvariantOutputColor(GrInitInvariantOutput* out) const override { | 51 void getInvariantOutputColor(GrInitInvariantOutput* out) const override { |
48 // When this is called on a batch, there is only one geometry bundle | 52 // When this is called on a batch, there is only one geometry bundle |
49 out->setKnownFourComponents(fGeoData[0].fColor); | 53 out->setKnownFourComponents(fGeoData[0].fColor); |
50 } | 54 } |
51 | 55 |
52 void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override { | 56 void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
53 out->setUnknownSingleComponent(); | 57 Impl::InitInvariantOutputCoverage(out); |
54 } | 58 } |
55 | 59 |
56 void initBatchTracker(const GrPipelineOptimizations& opt) override { | 60 void initBatchTracker(const GrPipelineOptimizations& opt) override { |
57 opt.getOverrideColorIfSet(&fGeoData[0].fColor); | 61 opt.getOverrideColorIfSet(&fGeoData[0].fColor); |
58 fOpts = opt; | 62 fOpts = opt; |
59 } | 63 } |
60 | 64 |
61 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } | 65 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } |
62 | 66 |
63 // to avoid even the initial copy of the struct, we have a getter for the fi
rst item which | 67 // to avoid even the initial copy of the struct, we have a getter for the fi
rst item which |
64 // is used to seed the batch with its initial geometry. After seeding, the
client should call | 68 // is used to seed the batch with its initial geometry. After seeding, the
client should call |
65 // init() so the Batch can initialize itself | 69 // init() so the Batch can initialize itself |
66 Geometry* geometry() { return &fGeoData[0]; } | 70 Geometry* geometry() { return &fGeoData[0]; } |
67 void init() { | 71 void init() { |
68 const Geometry& geo = fGeoData[0]; | 72 const Geometry& geo = fGeoData[0]; |
69 this->setBounds(geo.fDevRect); | 73 Impl::SetBounds(geo, &fBounds); |
70 } | 74 } |
71 | 75 |
72 private: | 76 private: |
73 GrTInstanceBatch() { | 77 GrTInstanceBatch() { |
74 this->initClassID<GrTInstanceBatch<Impl>>(); | 78 this->initClassID<GrTInstanceBatch<Impl>>(); |
75 | 79 |
76 // Push back an initial geometry | 80 // Push back an initial geometry |
77 fGeoData.push_back(); | 81 fGeoData.push_back(); |
78 } | 82 } |
79 | 83 |
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130 fGeoData.push_back_n(that->geoData()->count(), that->geoData()->begin())
; | 134 fGeoData.push_back_n(that->geoData()->count(), that->geoData()->begin())
; |
131 this->joinBounds(that->bounds()); | 135 this->joinBounds(that->bounds()); |
132 return true; | 136 return true; |
133 } | 137 } |
134 | 138 |
135 GrPipelineOptimizations fOpts; | 139 GrPipelineOptimizations fOpts; |
136 SkSTArray<1, Geometry, true> fGeoData; | 140 SkSTArray<1, Geometry, true> fGeoData; |
137 }; | 141 }; |
138 | 142 |
139 #endif | 143 #endif |
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