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Re: Help with X on iBook?

From: Sven LUTHER <luther@dpt-info.u-strasbg.fr>
To: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Sven LUTHER <luther@dpt-info.u-strasbg.fr>, Kin Chung <khchung001@hotmail.com>, debian-powerpc@lists.debian.org
Subject: Re: Help with X on iBook?
Date: Fri, 16 Mar 2001 12:58:32 +0100

On Fri, Mar 16, 2001 at 12:51:50PM +0100, Geert Uytterhoeven wrote:
> On Fri, 16 Mar 2001, Sven LUTHER wrote:
> > should work fine. Anyway, we never trully use 32 depth, since this is just 24 > > depth + 8bit alpha channel. I think some board support a color depth of 30
> > (10bit per component), or maybe even 36, but never 32.
> Hmm, I'm not that sure there are no RGB11/11/10 or RGB10/12/10 boards...

Well, in any case, i can assure you there are non such in an iBook.

That's for sure.  The best that the chip can do is 8x8x8 with 8 bits
pad to speed-up graphics handling.  Mind you, I can't see much of a
need for RGB 11/11/10 or RGB 10/12/10.  Seems like overkill to me,
given that the reported human sensitivity is only about 100 shades.
Of course, one can easily find better uses for 8 bits rather than
wasting them as padding (eg special effects) :-p.


Kin Hoong
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