1 /* 2 * Copyright 2024 Google LLC 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 skgpu_graphite_RasterPathUtils_DEFINED 9 #define skgpu_graphite_RasterPathUtils_DEFINED 10 11 #include "include/private/base/SkNoncopyable.h" 12 #include "src/base/SkVx.h" 13 #include "src/core/SkAutoPixmapStorage.h" 14 #include "src/core/SkDrawBase.h" 15 #include "src/core/SkRasterClip.h" 16 #include "src/gpu/ResourceKey.h" 17 18 namespace skgpu::graphite { 19 20 class Shape; 21 class Transform; 22 23 /** 24 * The RasterMaskHelper helps generate masks using the software rendering 25 * path. It is intended to be used as: 26 * 27 * RasterMaskHelper helper(pixmapstorage); 28 * helper.init(...); 29 * helper.drawShape(...); 30 * 31 * The result of this process will be the mask rendered in the Pixmap, 32 * at the upper left hand corner of the bounds. 33 * 34 * TODO: this could be extended to support clip masks, similar to GrSWMaskHelper. 35 */ 36 37 class RasterMaskHelper : SkNoncopyable { 38 public: RasterMaskHelper(SkAutoPixmapStorage * pixels)39 RasterMaskHelper(SkAutoPixmapStorage* pixels) : fPixels(pixels) {} 40 41 bool init(SkISize pixmapSize); 42 43 // Draw a single shape into the bitmap (as a path) at location resultBounds 44 void drawShape(const Shape& shape, 45 const Transform& transform, 46 const SkStrokeRec& strokeRec, 47 const SkIRect& resultBounds); 48 49 private: 50 SkAutoPixmapStorage* fPixels; 51 SkDrawBase fDraw; 52 SkRasterClip fRasterClip; 53 }; 54 55 skgpu::UniqueKey GeneratePathMaskKey(const Shape& shape, 56 const Transform& transform, 57 const SkStrokeRec& strokeRec, 58 skvx::half2 maskOrigin, 59 skvx::half2 maskSize); 60 } // namespace skgpu::graphite 61 62 #endif // skgpu_graphite_RasterPathUtils_DEFINED 63