setOpacity        766 magick/accelerate-private.h 			  setOpacity(&p,ClampToQuantum(mwcGenerateDifferentialNoise(&rng,getOpacity(p),noise_type,attenuate)));
setOpacity       1328 magick/accelerate-private.h       setOpacity(&outputPixel, ClampToQuantum(getOpacityF4(composite)));