So I've got two painted shaders named ROADS and TOWN.
TOWN is a painted area where building populations are to be "planted", while ROADS... yeah, you guessed it.
Question: How can I use the TOWN shader to mask the building population and at the same time exclude the ROADS shader from its coverage? Obviously, you don't want houses popping up in the middle of the main street...
I tried to merge both painted shaders via merge shader but, believe it or not, regardless of what option I chose and how I arranged both shaders I ended up with populations limited to the streets only... The TOWN shader was completely disregarded, whether it was difference, subtract or screen mixes...