Re: [pm2fb] update 990110 - first public release ;)

[Sven LUTHER <luther@maxime.u-strasbg.fr>]

On Wed, Jan 20, 1999 at 01:17:16PM +0100, Geert Uytterhoeven wrote:
> On Wed, 20 Jan 1999, Sven LUTHER wrote:
> > but then since i first booted in this mode, the bottom line of the
> > screen don't get erased anymore, very anoying, particularly
> > because it worked fine before.
> 
> I guess a problem with the clear_margins routine?
> 
> > also, Ilario and Geert, am i right in thinking that the pm2fb
> > initialize the permedia2 chip correclty, and that, when trying to
> > accelerate X i could use it directly, without having to do
> > initialization.
> 
> Yes. The X server must not do video mode initialization, but call the frame
> buffer device instead.
> 
> > also there is a whole part missing in the xfree pm2 accel servers,
> > so i don't know if it would be a good idea to use them.
> > 
> > Ilario, you released the pm2 includes uinder the GPL to go into
> > the kernel, is it ok to put them also in X ? 
> 
> I don't think that's a good idea: we want to be _integrated_ with XFree86, not
> diverge from them. So IMHO we should use the XFree86 include definitions for
> Permedia2.

Yes, ... i guess you are right, ...

but half the stuff from hw/xfree86/accel/glint is missing, i am not even sure
you can build an accelerated server from the 3.3.3.1 source, i asked on the
xfree-glint list, but got no response yet, so ...

> 
> BTW, Gerd Knorr added fbdev support to XF86_SVGA. Currently it supports Matrox
> only (or no accel on other boards) in fbdev mode, but it's a good start.
> Starting from that is probably the best way to have as much acceleration
> support as possible. The unified XFree86 4.0 will be much more similar to the
> current XF86_SVGA than to the other current accelerated servers like
> XF86_{Mach64,S3,S3V}. Adding more accel code to XF68_FBDev is a waste of time.
> 
> Yes, I really should try to get XF86_SVGA working on my CHRP box. Once we have
> it working for one chipset, the others should follow soon. XF86_SVGA does
> support not only Permedia2, but also ATI Mach64, S3 Trio64 and S3 ViRGE.
> 
> The only things lacking in a fbdev'ed XF86_SVGA for us are the missing support
> for Amiga and Atari bitplanes.
> 
> XF86_SVGA has another advantages for PPC: since it works on the `plain'
> chipset, too, we can have a unified X server that uses fbdev where available,
> and bangs the hardware completely where not (e.g. the PPC PReP boxes with S3 or
> Cirrus Logic).
> 
> Sven: I'll forward Gerd's patches.

Does that mean that i could build a XF86_SVGA server that will work on with my bvision ?

but it still don't solve the problem of the missing glint stuff.

and playing with my stuff, will permit me to experiment, and later i can merge with the other stuff,
or maybee 4.0 (for when it is scheduled ?)

Friendly,

Sven LUTHER

[[ This message was sent via the linuxppc-dev mailing list. Replies are ]]
[[ not forced back to the list, so be sure to  Cc linuxppc-dev  if your ]]
[[ reply is of general interest. To unsubscribe from linuxppc-dev, send ]]
[[ the message 'unsubscribe' to linuxppc-dev-request@lists.linuxppc.org ]]