20 struct SkEdge {  struct
27     SkEdge* fNext;  argument
28     SkEdge* fPrev;  argument
30     SkFixed fX;
31     SkFixed fDX;
32     int32_t fFirstY;
33     int32_t fLastY;
34     int8_t fCurveCount;    // only used by kQuad(+) and kCubic(-)
35     uint8_t fCurveShift;    // appled to all Dx/DDx/DDDx except for fCubicDShift exception
36     uint8_t fCubicDShift;   // applied to fCDx and fCDy only in cubic
37     int8_t  fWinding;       // 1 or -1
67 struct SkQuadraticEdge : public SkEdge {  argument