Re: [Linux-fbdev-devel] CRTC scanout buffer types

[Jon Smirl <jonsmirl@gmail.com>]

On 8/8/05, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Sun, 7 Aug 2005, Jon Smirl wrote:
> > On 8/7/05, Antonino A. Daplas <adaplas@gmail.com> wrote:
> > > Vladimir Dergachev wrote:
> > > >> I agree that something like the above is acceptable, exept that we need
> > > >> an extra field for offset and another if indexed color or not. So
> > > >> something like:
> > > >>
> > > >> A:2/0/R:10/2/G:10/12/B:10/22//I
> >
> > The offsets are not needed as part of the input, they should be part
> > of the output display. It is the chip driver that will determine the
> > offsets, not the user.
> 
> So you cannot select between RGB and BGR on hardware that allows to select
> that?

If you need that fine of control use the ioctl instead of sysfs.

> > The only exception I can think of is that the radeon hardware can
> > control which nibble is used in 4bpp. I'd say if you need that kind of
> 
> This is something completely different, since each nibble is a different pixel.
> 
> Gr{oetje,eeting}s,
> 
>                                                 Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                                             -- Linus Torvalds
> 
> 
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-- 
Jon Smirl
jonsmirl@gmail.com


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