[Bug 55591] Castlevania: Lords of Shadow 2 has rendering glitches

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55591

--- Comment #3 from Zeb Figura  ---
To be clear, we could just fix this bug the obvious way: rename buffers on map
rather than unmap, and flush every time a draw is done if we don't have
coherent BOs. (At that point the only function of unmap is to release address
space if we aren't mapping persistently.)

But that's going to be a nontrivial amount of work, and it's going to touch
some very central code that could easily result in more accidental regressions.
I'd kind of like to get to the bottom of this before trying that.