I have a png texture looks like as below:
above snapshot was taken from Texture Editor, only toggle on Channel Green and Alpha:
In Texture Editor, it use sRGB configuration:
What I want your guys’ help is:
In a material, how can I combine the channel algorithm to get a node just preview like it is in the first picture?
I tried this method （from a youtube video）:
but as you see， the preview of subtract had red value. Not I want.
Use UE4 version 4.26 to try all of these.