mix

fun mix(dst: RgbaArray, dstX: Int, src: RgbaPremultipliedArray, srcX: Int, count: Int)
fun mix(dst: RgbaPremultipliedArray, dstX: Int, src: RgbaPremultipliedArray, srcX: Int, count: Int)
fun mix(tgt: RgbaPremultipliedArray, tgtX: Int, dst: RgbaPremultipliedArray, dstX: Int, src: RgbaPremultipliedArray, srcX: Int, count: Int)
fun RGBA.mix(other: RGBA, ratio: Ratio): RGBA