[Bug 45932] Assassin' s Creed gameplay freezes after looking around with mouse

https://bugs.winehq.org/show_bug.cgi?id=45932

--- Comment #15 from Andrew Wesie  ---
(In reply to Józef Kucia from comment #14)
> I think our usage of query buffer objects might be invalid, e.g. the OpenGL
> spec says:
>
> "If MAP_COHERENT_BIT is set and the server does a write, the applica-
> tion must call FenceSync with SYNC_GPU_COMMANDS_COMPLETE (or
> Finish). Then the CPU will see the writes after the sync is complete."

Thanks for reminding me of that.

This new patch hopefully resolves the issue on NVIDIA then. It looks a bit
strange, e.g. we issue a fence then immediately delete it, but that is all that
is required from my testing.