I understand the concept of thickness maps.
however I cant find any clear documentation explaining how to use transmission maps or thickness maps.
for example.
recently I made a paper lanten, I used emission maps...
https://www.artstation.com/artwork/k4QVDlhowever originally I wanted to make a very thin paper with an candle mesh emitting light inside the lanten mesh, I was told that transmission maps would be appropriate for this.
however Im not sure how to use them. are they grayscale or rgb?
if I add a transmission output node in SD, I notice no change to the rendered substance.
If I export this as a sbsar to Substance Painter, and add an new channel in SP (transmission) what else should do I do?
