Date: Mon, 8 Mar 1999 10:15:09 -0500 (EST) From: Duane Currie <sandman@hub.org> To: The Hermit Hacker <scrappy@hub.org> Cc: freebsd-hackers@freebsd.org Subject: Re: GGI Message-ID: <Pine.BSF.4.05.9903081008530.71809-100000@hub.org> In-Reply-To: <Pine.BSF.4.05.9903081105160.7045-100000@thelab.hub.org>
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Not quite...
You can run it without any kernel support, but the 3dfx executables would
then have to be run with root privileges. There is a kernel driver that
executes the necessary code in privileged mode, but the program itself can
be run by any user. So, basically, to run the programs in user-land, you
have to use the device driver.
GGI seems to take a similar approach, but they might require kgi (the
kernel part of the interface) and not allow it to be done otherwise.
It all comes down to the fact that hardware operations generally have to
be done with privileged access, either as root or in the kernel. The
kernel is the better option mainly due to the fact that it allows access
by any user.
As usual, correct me if I'm wrong on any of this...
Duane
On Mon, 8 Mar 1999, The Hermit Hacker wrote:
>
> Again, questions I can't answer...
>
> One thing that I'm curious about...somewhere along the way, I read that
> the 3D stuff was 'kernel based'...basically, you needed kernel drivers to
> make use o fthe 3D acceleration features of the various cards ... is this
> not accurate?
>
> On Mon, 8 Mar 1999, Duane Currie wrote:
>
> >
> > FreeBSD supports it? kewl.
> > Is that through emulation or a port?
> >
> > Oh, actually another question: Do you support the card as a device so
> > non-root users can use it without making programs setuid?
> >
> > Duane
> >
> >
> > On Mon, 8 Mar 1999, The Hermit Hacker wrote:
> >
> > > On Sun, 7 Mar 1999, Mike Smith wrote:
> > >
> > > > > A friend just picked himself up a Voodoo2 card that Linux now supports and
> > > > > keeps cramming down the "FreeBSD doesn't support 3D accelleration" line
> > > > > down my throat :( My card is *supposedly* faster then what he has, from
> > > > > comparing specs...be great if I can slam it back down his throat :)
> > > >
> > > > Since the voodoo2 is a 3d card, and X is exclusively 2d, I can't quite
> > > > see how "supporting" this card actually achieves anything.
> > > >
> > > > If he's talking about GLIDE, you might mention that we support the
> > > > Linux GLIDE library...
> > >
> > > Well, let me CC him in...I don't follow Linux too closely, so don't feel
> > > that I can adequately comment on this...
> > >
> > > Marc G. Fournier
> > > Systems Administrator @ hub.org
> > > primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
> > >
> > >
> >
> >
>
> Marc G. Fournier
> Systems Administrator @ hub.org
> primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
>
>
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