From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Smirl Subject: Re: waitforVBlank, how does this even work? Date: Wed, 2 Mar 2005 14:06:08 -0500 Message-ID: <9e473391050302110615272990@mail.gmail.com> References: <9e473391050301215019081bce@mail.gmail.com> <9e47339105030209302701e9b5@mail.gmail.com> <200503021308.23110.sellers-eric@rogers.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit 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 1D6ZAg-0005oW-3q for linux-fbdev-devel@lists.sourceforge.net; Wed, 02 Mar 2005 11:06:10 -0800 Received: from rproxy.gmail.com ([64.233.170.200]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1D6ZAf-00029a-KL for linux-fbdev-devel@lists.sourceforge.net; Wed, 02 Mar 2005 11:06:10 -0800 Received: by rproxy.gmail.com with SMTP id z35so355864rne for ; Wed, 02 Mar 2005 11:06:09 -0800 (PST) In-Reply-To: <200503021308.23110.sellers-eric@rogers.com> Sender: linux-fbdev-devel-admin@lists.sourceforge.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" To: Eric Sellers Cc: Vladimir Dergachev , fbdev , DRI developer's list On Wed, 2 Mar 2005 13:08:23 -0500, Eric Sellers wrote: > You can use my module with or without X > (right now it only supports the older mach64 cards) > > The only problem is there is no way of telling X where > the capture buffers are. So you might get some corruption on screen when X > uses that memory and it gets overwritten by a frame and then copied back. > > The more memory you have the less you will notice this. > (so if you have a 4 meg card, you might want to keep your resolution and bit > depth down) > > If there was a userspace program that could allocate the end of video memory > there would be no problem. I'm working on the radeon fbdev and DRM drivers currently. I can fix the memory management for V4L if there is a radeon driver available. > > Eric > -- Jon Smirl jonsmirl@gmail.com ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click