From owner-freebsd-multimedia Sun Sep 28 17:16:06 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id RAA02879 for multimedia-outgoing; Sun, 28 Sep 1997 17:16:06 -0700 (PDT) Received: from netwolf.NetMasters.Com (netwolf.netmasters.com [199.201.245.5]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id RAA02873 for ; Sun, 28 Sep 1997 17:16:04 -0700 (PDT) Received: from netwolf.NetMasters.Com (localhost.NetMasters.Com [127.0.0.1]) by netwolf.NetMasters.Com (8.8.7/8.7.3) with ESMTP id UAA13787; Sun, 28 Sep 1997 20:16:03 -0400 (EDT) Message-Id: <199709290016.UAA13787@netwolf.NetMasters.Com> X-Mailer: exmh version 1.6.9 8/22/96 To: multimedia@freebsd.org From: "Michael G. Petry" cc: arg@arg1.demon.co.uk Subject: Matrox Millenium with 8M and BT848 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 28 Sep 1997 20:16:03 -0400 Sender: owner-freebsd-multimedia@freebsd.org X-Loop: FreeBSD.org Precedence: bulk A couple of us with Matrox cardsan 8meg have seen a strange shifting of the video image when running fxtv. I'm running it at 1280x1024 in 24 bit mode with a Bpp of 4. In the course of trying to understand the problem, it seems the image is shifted by 256 pixels. What concerns me is 1280 - 1024 is where I came up with the guess of 256. (it use to run justfine in 1024x768) In TVCAPTUREStart of tvcapture.c I changed the folowing: video.addr = x->base_addr + (((g.y * x->pitch) + g.x + 256 ) * Bpp); ^^^^^ This is a real hack at looking for the root cause. I don't know if this is a Matrox peculiarity or not. Are any others running in a higher than 1024xXXXX mode on their video boards and experiencing an image shift? Thanks, Mike