From owner-freebsd-multimedia Wed Nov 19 10:25:29 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id KAA08060 for multimedia-outgoing; Wed, 19 Nov 1997 10:25:29 -0800 (PST) (envelope-from owner-freebsd-multimedia) Received: from gdi.uoregon.edu (gdi.uoregon.edu [128.223.170.30]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id KAA08039 for ; Wed, 19 Nov 1997 10:25:21 -0800 (PST) (envelope-from dwhite@gdi.uoregon.edu) Received: from localhost (dwhite@localhost) by gdi.uoregon.edu (8.8.7/8.8.7) with SMTP id KAA03436; Wed, 19 Nov 1997 10:25:14 -0800 (PST) (envelope-from dwhite@gdi.uoregon.edu) Date: Wed, 19 Nov 1997 10:25:14 -0800 (PST) From: Doug White Reply-To: Doug White To: Charles Henrich cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: Faster X Updates In-Reply-To: <19971119101919.49668@crh.cl.msu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-multimedia@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 19 Nov 1997, Charles Henrich wrote: > I wrote a little test program that doesnt do anything but printf()'s to > the X screen. At best it appears to run at 1/50th a second. So my > question is, for the BrookTree drivers, are you eeking out a better > frame rate, and if so, how? The Brooktree video capture board writes data directly to the video card's framebuffer through a PCI-PCI transfer. It runs independently of XFree updates. the frame rate is somewhat dependent on how fast your machine can truck PCI data around and how long it takes the video card to redraw the display. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major