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| 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 | |
| 9 #ifndef GrAARectRenderer_DEFINED | |
| 10 #define GrAARectRenderer_DEFINED | |
| 11 | |
| 12 #include "GrRefCnt.h" | |
| 13 #include "SkMatrix.h" | |
| 14 #include "SkRect.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 GrRefCnt { | |
| 24 public: | |
| 25 SK_DECLARE_INST_COUNT(GrAARectRenderer) | |
| 26 | |
| 27 GrAARectRenderer() | |
| 28 : fAAFillRectIndexBuffer(NULL) | |
| 29 , fAAStrokeRectIndexBuffer(NULL) { | |
| 30 } | |
| 31 | |
| 32 void reset(); | |
| 33 | |
| 34 ~GrAARectRenderer() { | |
| 35 this->reset(); | |
| 36 } | |
| 37 | |
| 38 // TODO: potentialy fuse the fill & stroke methods and differentiate | |
| 39 // between them by passing in strokeWidth (<0 means fill). | |
| 40 | |
| 41 void fillAARect(GrGpu* gpu, | |
| 42 GrDrawTarget* target, | |
| 43 const SkRect& rect, | |
| 44 const SkMatrix& combinedMatrix, | |
| 45 const SkRect& devRect, | |
| 46 bool useVertexCoverage) { | |
| 47 #ifdef SHADER_AA_FILL_RECT | |
| 48 if (combinedMatrix.rectStaysRect()) { | |
| 49 this->shaderFillAlignedAARect(gpu, target, | |
| 50 rect, combinedMatrix); | |
| 51 } else { | |
| 52 this->shaderFillAARect(gpu, target, | |
| 53 rect, combinedMatrix); | |
| 54 } | |
| 55 #else | |
| 56 this->geometryFillAARect(gpu, target, | |
| 57 rect, combinedMatrix, | |
| 58 devRect, useVertexCoverage); | |
| 59 #endif | |
| 60 } | |
| 61 | |
| 62 void strokeAARect(GrGpu* gpu, | |
| 63 GrDrawTarget* target, | |
| 64 const SkRect& rect, | |
| 65 const SkMatrix& combinedMatrix, | |
| 66 const SkRect& devRect, | |
| 67 SkScalar width, | |
| 68 bool useVertexCoverage); | |
| 69 | |
| 70 // First rect is outer; second rect is inner | |
| 71 void fillAANestedRects(GrGpu* gpu, | |
| 72 GrDrawTarget* target, | |
| 73 const SkRect rects[2], | |
| 74 const SkMatrix& combinedMatrix, | |
| 75 bool useVertexCoverage); | |
| 76 | |
| 77 private: | |
| 78 GrIndexBuffer* fAAFillRectIndexBuffer; | |
| 79 GrIndexBuffer* fAAStrokeRectIndexBuffer; | |
| 80 | |
| 81 GrIndexBuffer* aaFillRectIndexBuffer(GrGpu* gpu); | |
| 82 | |
| 83 static int aaStrokeRectIndexCount(); | |
| 84 GrIndexBuffer* aaStrokeRectIndexBuffer(GrGpu* gpu); | |
| 85 | |
| 86 // TODO: Remove the useVertexCoverage boolean. Just use it all the time | |
| 87 // since we now have a coverage vertex attribute | |
| 88 void geometryFillAARect(GrGpu* gpu, | |
| 89 GrDrawTarget* target, | |
| 90 const SkRect& rect, | |
| 91 const SkMatrix& combinedMatrix, | |
| 92 const SkRect& devRect, | |
| 93 bool useVertexCoverage); | |
| 94 | |
| 95 void shaderFillAARect(GrGpu* gpu, | |
| 96 GrDrawTarget* target, | |
| 97 const SkRect& rect, | |
| 98 const SkMatrix& combinedMatrix); | |
| 99 | |
| 100 void shaderFillAlignedAARect(GrGpu* gpu, | |
| 101 GrDrawTarget* target, | |
| 102 const SkRect& rect, | |
| 103 const SkMatrix& combinedMatrix); | |
| 104 | |
| 105 void geometryStrokeAARect(GrGpu* gpu, | |
| 106 GrDrawTarget* target, | |
| 107 const SkRect& devOutside, | |
| 108 const SkRect& devInside, | |
| 109 bool useVertexCoverage); | |
| 110 | |
| 111 typedef GrRefCnt INHERITED; | |
| 112 }; | |
| 113 | |
| 114 #endif // GrAARectRenderer_DEFINED | |
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Chromium Code Reviews
Issue 23513016:
Move oval and rect renderer includes to private interface (Closed)
Base URL: https://skia.googlecode.com/svn/trunk