[Bug 45901] Avoid GPU synchronization due to GPU-CPU transfer (Overwatch)

https://bugs.winehq.org/show_bug.cgi?id=45901

--- Comment #11 from Henri Verbeet  ---
So with what's currently in Wine, this should be resolved everywhere except on
the Gallium-based Mesa drivers, right? I'm tempted to just nominate the final
patch in the series for staging. Not so much because there's anything wrong
with the patch itself, but because it's essentially a workaround for a
shortcoming in the driver.

If you could send a patch or bug report to Mesa, that would be great. If not,
one of us can look into it; I think it should be reasonably straightforward.