From owner-freebsd-multimedia  Tue May 19 16:19:17 1998
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Date: Tue, 19 May 1998 19:17:39 -0400
From: Randall Hopper <rhh@ct.picker.com>
To: tomppa@fidata.fi, Igor Nikolaev <igor@pu.ru>, multimedia@FreeBSD.ORG,
        Amancio Hasty <hasty@rah.star-gate.com>
Cc: freebsd-multimedia@FreeBSD.ORG
Subject: Re: fxtv and milenniumIIagp
Mail-Followup-To: tomppa@fidata.fi, Igor Nikolaev <igor@pu.ru>,
	multimedia@FreeBSD.ORG, Amancio Hasty <hasty@rah.star-gate.com>,
	freebsd-multimedia@FreeBSD.ORG
References: <19980518231539.40105@pu.ru>
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In-Reply-To: <19980518231539.40105@pu.ru>; from Igor Nikolaev on Mon, May 18, 1998 at 11:15:39PM +0400
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Tomi Vainio:
 |Igor Nikolaev writes:
 | > I have fxtv Version 0.46 and (working) milennium II AGP (Xfree 3.3.2).
 | > My videocard works in 32bpp mode (in 16bpp all o'k)
 | > 
 | > This is well know bug or unknown feature?
 | > 
 |
 |This is known feature and Randall is trying to find out why this
 |happens.  You can "fix" it by adding 256 to picture position.
 |tvcapture.c line 1509: 
 |video.addr      = x->base_addr + (g.y * x->pitch + g.x) * Bpp; ====>
 |video.addr      = x->base_addr + (g.y * x->pitch + g.x + 256) * Bpp;

Not much else I can do.  From what we've seen, sounds like an XFree86 bug
related to the Matrox 8Meg cards at 32bpp at desktops larger than 1024x768.

You and Michael needed the "+256" for 1280.  From Igor's pic, looks like
for 1600x1200 he needs (and likely you'd need) +640:

  video.addr      = x->base_addr + (g.y * x->pitch + g.x + 640) * Bpp;

Randall

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