https://bugs.winehq.org/show_bug.cgi?id=39080
--- Comment #14 from Béla Gyebrószki gyebro69@gmail.com --- (In reply to Paul Gofman from comment #13)
Created attachment 63336 [details] wined3d: Ignore multisample quality for MULTISAMPLE_NONE in context_find_fbo_entry().
I tested the demo and could reproduce broken faces but not broken terrain. I did not go deep inside the game though.
The patch indeed fixes the issue with broken faces, but doesn't resolve the broken terrain bug. The later isn't present in the demo version.