NSCompositingOperation.sourceOver
The source image wherever it is opaque, and the destination image elsewhere.
Declaration
case sourceOverDiscussion
The source image is applied using the formula R = S + D*(1-Sa).
See Also
Operations for Compositing
NSCompositingOperation.clearNSCompositingOperation.copyNSCompositingOperation.sourceInNSCompositingOperation.sourceOutNSCompositingOperation.sourceAtopNSCompositingOperation.destinationOverNSCompositingOperation.destinationInNSCompositingOperation.destinationOutNSCompositingOperation.destinationAtopNSCompositingOperation.xorNSCompositingOperation.plusDarkerNSCompositingOperation.plusLighterNSCompositingOperation.multiplyNSCompositingOperation.screenNSCompositingOperation.overlay