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comparison: gfx/skia/trunk/src/gpu/GrAARectRenderer.h
gfx/skia/trunk/src/gpu/GrAARectRenderer.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:02344f24e05f |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 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 #ifndef GrAARectRenderer_DEFINED | |
| 9 #define GrAARectRenderer_DEFINED | |
| 10 | |
| 11 #include "SkMatrix.h" | |
| 12 #include "SkRect.h" | |
| 13 #include "SkRefCnt.h" | |
| 14 #include "SkStrokeRec.h" | |
| 15 | |
| 16 class GrGpu; | |
| 17 class GrDrawTarget; | |
| 18 class GrIndexBuffer; | |
| 19 | |
| 20 /* | |
| 21 * This class wraps helper functions that draw AA rects (filled & stroked) | |
| 22 */ | |
| 23 class GrAARectRenderer : public SkRefCnt { | |
| 24 public: | |
| 25 SK_DECLARE_INST_COUNT(GrAARectRenderer) | |
| 26 | |
| 27 GrAARectRenderer() | |
| 28 : fAAFillRectIndexBuffer(NULL) | |
| 29 , fAAMiterStrokeRectIndexBuffer(NULL) | |
| 30 , fAABevelStrokeRectIndexBuffer(NULL) { | |
| 31 } | |
| 32 | |
| 33 void reset(); | |
| 34 | |
| 35 ~GrAARectRenderer() { | |
| 36 this->reset(); | |
| 37 } | |
| 38 | |
| 39 // TODO: potentialy fuse the fill & stroke methods and differentiate | |
| 40 // between them by passing in stroke (==NULL means fill). | |
| 41 | |
| 42 void fillAARect(GrGpu* gpu, | |
| 43 GrDrawTarget* target, | |
| 44 const SkRect& rect, | |
| 45 const SkMatrix& combinedMatrix, | |
| 46 const SkRect& devRect, | |
| 47 bool useVertexCoverage) { | |
| 48 #ifdef SHADER_AA_FILL_RECT | |
| 49 if (combinedMatrix.rectStaysRect()) { | |
| 50 this->shaderFillAlignedAARect(gpu, target, | |
| 51 rect, combinedMatrix); | |
| 52 } else { | |
| 53 this->shaderFillAARect(gpu, target, | |
| 54 rect, combinedMatrix); | |
| 55 } | |
| 56 #else | |
| 57 this->geometryFillAARect(gpu, target, | |
| 58 rect, combinedMatrix, | |
| 59 devRect, useVertexCoverage); | |
| 60 #endif | |
| 61 } | |
| 62 | |
| 63 void strokeAARect(GrGpu* gpu, | |
| 64 GrDrawTarget* target, | |
| 65 const SkRect& rect, | |
| 66 const SkMatrix& combinedMatrix, | |
| 67 const SkRect& devRect, | |
| 68 const SkStrokeRec* stroke, | |
| 69 bool useVertexCoverage); | |
| 70 | |
| 71 // First rect is outer; second rect is inner | |
| 72 void fillAANestedRects(GrGpu* gpu, | |
| 73 GrDrawTarget* target, | |
| 74 const SkRect rects[2], | |
| 75 const SkMatrix& combinedMatrix, | |
| 76 bool useVertexCoverage); | |
| 77 | |
| 78 private: | |
| 79 GrIndexBuffer* fAAFillRectIndexBuffer; | |
| 80 GrIndexBuffer* fAAMiterStrokeRectIndexBuffer; | |
| 81 GrIndexBuffer* fAABevelStrokeRectIndexBuffer; | |
| 82 | |
| 83 GrIndexBuffer* aaFillRectIndexBuffer(GrGpu* gpu); | |
| 84 | |
| 85 static int aaStrokeRectIndexCount(bool miterStroke); | |
| 86 GrIndexBuffer* aaStrokeRectIndexBuffer(GrGpu* gpu, bool miterStroke); | |
| 87 | |
| 88 // TODO: Remove the useVertexCoverage boolean. Just use it all the time | |
| 89 // since we now have a coverage vertex attribute | |
| 90 void geometryFillAARect(GrGpu* gpu, | |
| 91 GrDrawTarget* target, | |
| 92 const SkRect& rect, | |
| 93 const SkMatrix& combinedMatrix, | |
| 94 const SkRect& devRect, | |
| 95 bool useVertexCoverage); | |
| 96 | |
| 97 void shaderFillAARect(GrGpu* gpu, | |
| 98 GrDrawTarget* target, | |
| 99 const SkRect& rect, | |
| 100 const SkMatrix& combinedMatrix); | |
| 101 | |
| 102 void shaderFillAlignedAARect(GrGpu* gpu, | |
| 103 GrDrawTarget* target, | |
| 104 const SkRect& rect, | |
| 105 const SkMatrix& combinedMatrix); | |
| 106 | |
| 107 void geometryStrokeAARect(GrGpu* gpu, | |
| 108 GrDrawTarget* target, | |
| 109 const SkRect& devOutside, | |
| 110 const SkRect& devOutsideAssist, | |
| 111 const SkRect& devInside, | |
| 112 bool useVertexCoverage, | |
| 113 bool miterStroke); | |
| 114 | |
| 115 typedef SkRefCnt INHERITED; | |
| 116 }; | |
| 117 | |
| 118 #endif // GrAARectRenderer_DEFINED |
