Subject: Re: Ultra 5 X11
To: Martin Husemann <firstname.lastname@example.org>
From: Gert Doering <email@example.com>
Date: 02/10/2005 13:48:36
thanks for your explanations. Some more questions, though :-)
On Thu, Feb 10, 2005 at 10:08:24AM +0100, Martin Husemann wrote:
> On Thu, Feb 10, 2005 at 09:57:49AM +0100, Gert Doering wrote:
> > How does "accellerated wscons" work? I thought wscons just presents
> > a dumb frame buffer device to the X server? Or can XFree86 figure out
> > "hey, behind this wscons, it's hiding an Mach64 chip, so let's use the
> > XFree86 hardware driver"?
> (a) wscons can use acceleration, if the kernel display driver provides
> them. Michael made machfb do so.
How are these acceleration functions accessed? Is it an ioctl() on the
Which "client" can/does make use of this acceleration? XFree86/wscons,
or "text mode console" output?
> (b) XFree just accesses the card directly (and uses acceleration too).
> The kernel driver only allows it to mmap the frame buffer *and*
> the controll registers.
So you would use the "ati" driver in XFree, and not "wscons"?
(Some background: I've tried to run XFree with the ati driver some months
ago, and it complained that it couldn't access the card, but I still don't
understand the puzzle enough to figure out what *should* have happened).
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Gert Doering - Munich, Germany firstname.lastname@example.org
fax: +49-89-35655025 email@example.com