SO you're totally right, it's using the same UV lookup. Here be my shader: ......................................... Shader "Transparent/Diffuse + Extra Alpha" { Properties { _Color ("Main Color", Color) = (1,1,1,1) _MainTex ("Base (RGB) Trans (A)", 2D) = "white" {} _AlphaMap ("Additional Alpha Map (Greyscale)", 2D) =…