[Bug 21165] Borderlands is ~3x slower under Wine (GeForce Go 7900 GS).

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=21165





--- Comment #32 from Erich Hoover <ehoover at mines.edu>  2010-08-24 09:57:24 ---
(In reply to comment #31)
> ...
> Changing settings seems to have little to no effect (resolution,
> game/foliage/texture quality, etc) all seem to be independent of framerate,
> which makes me feel that there's a bottleneck not directly related to the
> rendering.
> ...

Being cognizant of the performance issues we've all been experiencing I've been
formulating a theory as to their source.  After playing many times with my
father, and watching certain types of artifacts occur with different settings,
I am growing suspicious that somehow it is the processing of audio that is
causing the slowdown.

Evidence:
1) When loading games there is a black screen before the "wormhole effect" that
consumes roughly the same time as the effect itself.
2) Only when playing using the ALSA driver do I see the "zoom crosshair doesn't
show up" bug, and when I do see the crosshair under these conditions it is
always timed with the end of an audio event (ie. hearing gunshots or
footsteps).
3) When standing still the framerate appears to be much better than when
walking, and it is even worse when two people are walking within earshot of
each other.

I don't exactly have the time to track this down right now (I have a backlog of
patches I need to update), but I'm hoping this information will be useful to
someone else.

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