From: Branden Robinson <branden@debian.org>
To: Clint Adams <schizo@debian.org>, 226973@bugs.debian.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Sven Luther <sven.luther@wanadoo.fr>,
Linux Frame Buffer Device Development
<linux-fbdev-devel@lists.sourceforge.net>
Subject: Re: Bug#226973: Re: Bug#226973: xserver-xfree86: [glint] second card at wrong resolution
Date: Thu, 1 Apr 2004 01:41:22 -0500 [thread overview]
Message-ID: <20040401064122.GH16695@deadbeast.net> (raw)
In-Reply-To: <20040331161002.GB16669@scowler.net>
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On Wed, Mar 31, 2004 at 11:10:02AM -0500, Clint Adams wrote:
> > If your graphics controller is limited by memory bandwidth, the maximum pixel
> > clock depends on the number of bits per pixels, since larger pixels mean more
> > memory bandwidth.
>
> I'm unclear on the differences between 24 bpp and 32 bpp and how this
> relates to internal pixmap format.
Some hardware uses a "packed-pixel format"; that is, 4 24-bit pixels are
encoded in 3 32-bit words (what Intel calls "DWORDS", I think).
Other hardware tosses in a zero byte with every 32-bit "DWORD" transfer.
--
G. Branden Robinson | The last time the Republican Party
Debian GNU/Linux | was on the right side of a social
branden@debian.org | issue, Abe Lincoln was president.
http://people.debian.org/~branden/ | -- Kirk Tofte
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next prev parent reply other threads:[~2004-04-01 6:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20040109163119.GA10151@scowler.net>
[not found] ` <20040112121558.GA24511@iliana>
[not found] ` <20040112215543.GB2150@scowler.net>
2004-01-13 7:41 ` Bug#226973: xserver-xfree86: [glint] second card at wrong resolution Sven Luther
2004-01-13 15:40 ` Clint Adams
2004-01-13 16:02 ` Sven Luther
2004-01-14 21:06 ` Clint Adams
2004-01-14 21:12 ` Sven Luther
2004-01-14 21:17 ` Clint Adams
2004-01-14 21:12 ` Clint Adams
2004-01-14 21:16 ` Sven Luther
2004-01-15 21:55 ` Clint Adams
2004-01-15 22:47 ` Clint Adams
2004-03-30 15:32 ` Clint Adams
2004-03-30 16:57 ` Sven Luther
2004-03-30 23:02 ` Clint Adams
2004-03-30 23:08 ` Sven Luther
2004-03-31 8:12 ` Geert Uytterhoeven
2004-03-31 16:10 ` Clint Adams
2004-04-01 6:41 ` Branden Robinson [this message]
2004-04-01 6:51 ` Bug#226973: " Sven Luther
2004-04-01 16:41 ` Branden Robinson
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