[Bug 35718] Multiple games have extreme flicker, stutter, slowdown (Path of Exile, Roller Coaster Tycoon, Counter Strike: Global Offensive, Warframe, Crysis, Anno 1602, Splinter Cell: Blacklist)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=35718

--- Comment #112 from Alex Henrie <alexhenrie24 at gmail.com> ---
(In reply to Ken Thomases from comment #111)
> The pixel format dictates the fbconfig. The fbconfig dictates the visual.
> The visual is a property of the window set at creation.

OK, thanks for the answer. I read the wine-devel discussion from May 2014 as
well, and it sounds like we need more tests to determine whether native d3d
supports having multiples surfaces per window. If it does, then we can add
multiple surface support because some applications might need it anyway, then
capitalize on that feature to give user32 and d3d separate surfaces to avoid
context switching. If native d3d does not permit multiple surfaces, then maybe
we can cache the old X window in the X11 driver and just move it to the front
if the previous pixel format is needed again.

Unfortunately, I do not know how to write the tests we need for this. I might
be able to come up with something eventually, but it would be better if someone
familiar with d3d tackled this.

Sorry if these seem like stupid questions...this bug has attracted my interest
not because I particularly like messing with d3d code, but rather because the
problem here is so severe and there are a large number of applications
affected.

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