MTLBlendOperation.reverseSubtract
Subtract a portion of the source values from a portion of the destination pixel values.
Declaration
case reverseSubtractDiscussion
RGB = Dest.rgb * DBF - Source.rgb * SBF
A = Dest.a * DBF - Source.a * SBF
Subtract a portion of the source values from a portion of the destination pixel values.
case reverseSubtractRGB = Dest.rgb * DBF - Source.rgb * SBF
A = Dest.a * DBF - Source.a * SBF