Hi @aMahvan,
It’s pretty tricky to texture the sides of OSM buildings, but it should be possible to emulate the effect you’re looking for with materials.
The main issue is that the side textures must be world-aligned or otherwise using triplanar mapping, because the buildings don’t have UVs. The WorldAlignedTexture node can get you most of the way there. However, since the buildings are all part of the same tileset, they’ll all apply the textures in the same way, which can look undesirable. Essentially, the material can’t know where the edges, top, or bottom of the building is, so features like windows likely won’t look natural on all buildings in an area.
If you’re only interested in working with a few buildings, you can probably tweak the spacing and scaling until you get something passable.
This thread discusses world-aligned textures on OSM buildings and some of the limitations.
Can you share more information about your application? I might be able to give more specific advice if you’re trying to optimize for certain scenarios.
-Alex