IL-2: BoS: Wrong mipmap tiling

[kissklas]

IL-2: Battle of Stalingrad seems to render the wrong terrain mipmap tiles (from the second level of detail and out), when using SoftTH.

It also looks as if the tiles are in use several times over, outwards into the distance.

Additionally, I think I observed geometry popping in and out as well. Can't say too certain without more testing. Might be related to LoD handeling as well?

Attached screenshots from afar and near. The same area.