[Bug 27959] Starcraft 2 & CnC Generals Zero Hour: performance regression using NVidia proprietary drivers

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27959

--- Comment #7 from Steven <redalert.commander at gmail.com> 2011-08-12 17:26:13 CDT ---
I did more tests today using "export WINEDEBUG=+fps". (tested on C&C generals:
Zero hour) picked framerate is a good average. Only checked the game menu, as
it is illustrative enough.

Normal framerate:
trace:fps:X11DRV_SwapBuffers @ approx 30.62fps, total 22.05fps
trace:fps:swapchain_gl_present 0x621bcf8 @ approx 30.62fps

With offending patch:
trace:fps:X11DRV_SwapBuffers @ approx 1.94fps, total 13.56fps
trace:fps:swapchain_gl_present 0x6162510 @ approx 1.94fps

which is frankly speaking a huge difference.

I did notice something else that might help debugging this, I have a dual
monitor setup, but use 3 monitors, yet only 2 at the same time. So I change
xorg configs when I switch between them.

When using separate x screens, the framerate is normal, both with and without
the offending commit.
When using xinerama, framerate without offending patch is normal, yet slow with
the patch applied.

@Joel "iLag" Hammond: can you confirm this behavior?

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