support for building:material=timber_framing

[Sinuhe20]

you could use a simple texture like Kendzi3D has:

It's a widely used material value (0.24 %):

https://taginfo.openstreetmap.org/keys/?key=building%3Amaterial#values

[tordanik]

I agree this material is worth supporting, but I haven't found suitable public domain textures yet which meet minimum quality standards (such as PBR support and decent resolution).