David Luff wrote:
> William McRaven wrote:
> > I downloaded the CVS last week .. tues or wed .. and installed it.
> >
> > The frame rate went to.. very bad. basically made flightgear
> > unflyable.. It also made regular flightgear unflyable .. the screen
> > jumping every 1 or 2 seconds.. and also other 3d programs started
> > doing the same.. TuxKart and TuxRacer..
>
> OK, that's it!!! - ATC did *not* break TuxRacer ;-)
I'll bet he installed the 4191 NVidia drivers at the same time. The
current version has terrible 2D performance issues. NVidia yanked the
XAA acceleration architecture and replaced it with their own, which is
only partially accelerated so far. In particular, the RENDER
extension is handled with a software fallback.
So anything that tries to draw to the screen with RENDER causes
0.1-0.3 second pauses as the X Server enters a tight software loop
blitting to the framebuffer. This includes text output (!) on the
gnome-terminal application shipped with most distributions. So if you
run FlightGear or other 3D apps from a gnome-terminal, you're hosed.
I work around this by running 3D apps from an xterm instead.
Andy
--
Andrew J. Ross Beyond the Ordinary Plausibility Productions
Sole Proprietor Beneath the Infinite Hillsboro, OR
Experience... the Plausible?
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