From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sven Luther Subject: Re: Bug#226973: Re: Bug#226973: xserver-xfree86: [glint] second card at wrong resolution Date: Thu, 1 Apr 2004 08:51:02 +0200 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <20040401065102.GB637@lambda> References: <20040113160221.GA12752@iliana> <20040114211246.GA31567@scowler.net> <20040114211643.GA6793@iliana> <20040330153247.GB11287@scowler.net> <20040330165738.GC31639@lambda> <20040330230203.GA2568@scowler.net> <20040330230829.GA5257@lambda> <20040331161002.GB16669@scowler.net> <20040401064122.GH16695@deadbeast.net> Mime-Version: 1.0 Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1B8w2g-0004Ry-PQ for linux-fbdev-devel@lists.sourceforge.net; Wed, 31 Mar 2004 22:51:10 -0800 Received: from smtp1.wanadoo.fr ([193.252.22.30] helo=mwinf0102.wanadoo.fr) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.30) id 1B8w2g-0000X2-JZ for linux-fbdev-devel@lists.sourceforge.net; Wed, 31 Mar 2004 22:51:10 -0800 Content-Disposition: inline In-Reply-To: <20040401064122.GH16695@deadbeast.net> Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Branden Robinson Cc: Clint Adams , 226973@bugs.debian.org, Geert Uytterhoeven , Sven Luther , Linux Frame Buffer Device Development On Thu, Apr 01, 2004 at 01:41:22AM -0500, Branden Robinson wrote: > 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). Yeah, DWORDS, because they are stil living in the era of 16bit hardware :) > Other hardware tosses in a zero byte with every 32-bit "DWORD" transfer. Well, the permedia2 should support both formats, depending on chosen mode. Friendly, Sven Luther ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click