I'm currently trying to texture a series of walls, all different lengths, but wish to use the same portion of a texture to cover them all. I know that I can split up the walls into roughly equal panels, or spread out the wall UVs to various sizes until they repeat as necessary, but my goal is to keep the polycount low, as well as keep the texture usage to a minimum. My goal is to dedicate a strip of my main texture (say 128x1024 of a 1024^2 texture) to a repeating wall panel, and then tile that across my walls using different materials. Other portions of the texture will cover windows, floor tiles (which similarly need to repeat, though in two directions), posters, and fake room renders I'll be scribbling in myself.
Is it possible to repeat just a portion of a texture map across a large face?