@ kDifference
rc = s + d - 2*(min(s*da, d*sa)), ra = kSrcOver
constexpr SkColor SK_ColorYELLOW
constexpr SkColor SK_ColorBLUE
static void draw(SkCanvas *canvas, SkRect &target, int x, int y)
void drawPaint(const SkPaint &paint)
static sk_sp< SkShader > MakeRadial(const SkPoint ¢er, SkScalar radius, const SkColor colors[], const SkScalar pos[], int count, SkTileMode mode, uint32_t flags=0, const SkMatrix *localMatrix=nullptr)
PODArray< SkColor > colors
SK_API sk_sp< SkShader > Blend(SkBlendMode mode, sk_sp< SkShader > dst, sk_sp< SkShader > src)
SK_API sk_sp< SkShader > MakeTurbulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY, int numOctaves, SkScalar seed, const SkISize *tileSize=nullptr)
REG_FIDDLE(skpaint_compose, 256, 256, false, 0)
static constexpr SkPoint Make(float x, float y)