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 "GrRect.h" 13 #include "GrRefCnt.h" 14 15 class GrGpu; 16 class GrDrawTarget; 17 class GrIndexBuffer; 18 19 /* 20 * This class wraps helper functions that draw AA rects (filled & stroked) 21 */ 22 class GrAARectRenderer : public GrRefCnt { 23 public: 24 SK_DECLARE_INST_COUNT(GrAARectRenderer) 25 26 GrAARectRenderer() 27 : fAAFillRectIndexBuffer(NULL) 28 , fAAStrokeRectIndexBuffer(NULL) { 29 } 30 31 void reset(); 32 33 ~GrAARectRenderer() { 34 this->reset(); 35 } 36 37 // TODO: potentialy fuse the fill & stroke methods and differentiate 38 // btween them by passing in strokeWidth (<0 means fill). 39 40 // TODO: Remove the useVertexCoverage boolean. Just use it all the time 41 // since we now have a coverage vertex attribute 42 void fillAARect(GrGpu* gpu, 43 GrDrawTarget* target, 44 const GrRect& devRect, 45 bool useVertexCoverage); 46 47 void strokeAARect(GrGpu* gpu, 48 GrDrawTarget* target, 49 const GrRect& devRect, 50 const GrVec& devStrokeSize, 51 bool useVertexCoverage); 52 53 private: 54 GrIndexBuffer* fAAFillRectIndexBuffer; 55 GrIndexBuffer* fAAStrokeRectIndexBuffer; 56 57 GrIndexBuffer* aaFillRectIndexBuffer(GrGpu* gpu); 58 59 static int aaStrokeRectIndexCount(); 60 GrIndexBuffer* aaStrokeRectIndexBuffer(GrGpu* gpu); 61 62 typedef GrRefCnt INHERITED; 63 }; 64 65 #endif // GrAARectRenderer_DEFINED 66
