What i want to do is a knife! which the metal part reflect the environment... and the rest (non metal) not!!!
Just that..
I have the knife skin, and the 2nd skin is a grayscale pic where the metal part is poited to the white part of the 2nd skin..
I have the cubic environment shader script i just want to know where the alpha map is used!! where i put it.. and how to control it like 100% or 0% ... Cause only the metal reflect environment..
PLease help me!