Understanding hybrid submaps

[Max_Caine]

I'm making a loading bay for a town map I'm working on, which combines industrial and town tile elements. I can do that on my local copy easily enough but if I want to make it portable, must I make a /tiles/town/foo/ for the tiles I'm taking from industrial?

[llunak]

Yes. Most images from tiles/ are packed into those atlasXY.png images, and since each of them takes 4MiB video memory, the game loads atlases only from the map's tileset.

Which is indeed an annoyance, but I'm not quite sure how to improve that.