On all models except the floor and the ceiling there is a uv unwrapping .. There is no texture on the ceiling, just gray material .. On the floor there is a texture assigned .. In the screenshot I indicated how the coal material looks. It was made by standard maps. I did not remove the light and the camera in the scene. .Textures of different sizes .. There are 4096x4096, as well as 2048x2048 .. (jpg)..
vray 3.50.04..Gamma 2.2...3ds max 2017..