15     SkIRect fSubset;  member
18         return fID == rhs.fID && fSubset == rhs.fSubset;
31             fSubset = {0, 0, 0, 0};  in fImage()
37             fSubset = fImage->bounds();  in fImage()
39             SkASSERT(!fSubset.isEmpty());  in fImage()
41             fSubset = subset;  in fImage()
42             if (!fSubset.intersect(fImage->bounds())) {  in fImage()
44                 fSubset = {0, 0, 0, 0};  in fImage()
56     SkISize dimensions() const { return fSubset.size(); }  in dimensions()
59         return fSubset == fImage->bounds() ? fImage : fImage->makeSubset(fSubset);  in makeImage()
62     SkBitmapKey getKey() const { return SkBitmapKey{fSubset, fID}; }  in getKey()
66         SkRect src = SkRect::Make(fSubset),  in draw()
72     SkIRect fSubset;