[Bug 41930] Civilization III Complete shows black terrain (Wine compiled with OSMesa support)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=41930

--- Comment #50 from Scott  ---
(In reply to Bryan Varner from comment #46)
> For anyone who wants to play along, I'm working on a patch to mesa here:
>
> https://gitlab.freedesktop.org/bvarner/mesa/-/tree/feature/osmesa-preserve-
> buffer
>
> With the changes from that branch, the game no longer crashes.
>
> The GL rendered elements seem like they may be in inverse byte order from
> what is expected.
>
> There are some other visual elements that get messed up from time to time
> (city name blocks) as well.

Tried compiling your fix but no luck, has trouble finding clang. Any chance you
might do a merge request so we can avoid work-arounds?