Date: Sun, 28 Sep 1997 22:38:06 -0600 (MDT) From: Kenneth Merry <ken@plutotech.com> To: petry@NetMasters.Com (Michael G. Petry) Cc: multimedia@FreeBSD.ORG, arg@arg1.demon.co.uk Subject: Re: Matrox Millenium with 8M and BT848 Message-ID: <199709290438.WAA23378@pluto.plutotech.com> In-Reply-To: <199709290016.UAA13787@netwolf.NetMasters.Com> from "Michael G. Petry" at "Sep 28, 97 08:16:03 pm"
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Michael G. Petry wrote... > > 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? I have a Millennium with 8MB of WRAM, and I've seen the same shift problem under XFree86 in direct video mode. IIRC, it does run normally at 1024x768, but not at 1280x1024. Right now I'm running with AcceleratedX in XImage mode. It works fine... Ken -- Kenneth Merry ken@plutotech.com
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