[Bug 34051] Low FPS with winemac driver in Unreal Tournament GOTY

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=34051

--- Comment #10 from Ken Thomases <ken at codeweavers.com> 2013-10-13 00:21:34 CDT ---
Thanks.

First of all, I was incorrect in my previous analysis of the properties being
requested of the pixel format.  I had said that stereo was being requested, but
it wasn't.  I had assumed that the "flags" were being logged using hexadecimal
but it was using decimal.

It seems that the problem is that the game is requesting a depth buffer with 32
bits.  Your GPU does not support that but Apple's software renderer does.  See
the "Depth Buffer Modes" section toward the bottom of this table:
https://developer.apple.com/graphicsimaging/opengl/capabilities/GLInfo_1084.html

So, ChoosePixelFormat() is selecting a pixel format from the software renderer
as the best match to the request.  The question is why it's choosing
differently when using the X11 driver.  Could you collect a similar log with
that driver, please?


Also, you said you're not using Direct3D, but the log shows Direct3D being
used.  I'm not sure what explains that.


You also said that the reason for not using Direct3D is that you can't see the
game until you Command-Tab away and back but then the game doesn't use the
selected resolution.  Wine 1.7.4 includes a change to the Mac driver so that it
reapplies any custom resolution selection when you switch back.  So, it's worth
checking if that solves that particular part of the problem.

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