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To: Randall Hopper <rhh@ct.picker.com>
cc: Kenneth Merry <ken@plutotech.com>, multimedia@FreeBSD.ORG,
        Amancio Hasty <hasty@rah.star-gate.com>
From: "Michael G Petry" <petry@DITTO.NetMasters.com>
Subject: Re: Matrox Millenium with 8M and BT848 
In-reply-to: Your message of "Mon, 29 Sep 1997 20:08:41 EDT."
             <19970929200841.34122@ct.picker.com> 
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Date: Mon, 29 Sep 1997 21:51:14 -0400
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>      I gather the video block on the Millenium @ 1280 looks fine (solid,
> rectangular, correct colors); it just not in the window frame.  It's off to
> the left.  And only does this in 1280x1024, not 1024x768.

Yep.  That's it.

>      A few questions that'll help nail down the problem.  
> 
> 1) With the "+ 256" you added, is the video inside the window frame no
>    matter how high or low the TV window is on your screen (e.g. try
>    "-geometry +100+0" and "-geometry +100+800" -- do both these look OK?)?

Both look ok.  I can move the windo around the window and it tracks just fine.

> 2) Please add this line after the line you patched:
> 
>         printf( "geometry = X %4d, Y %4d, Bpp %d\n", g.x, g.y, Bpp );
> 
>    and try "-geometry +0+700".  Does it print something very close to "X 1,
>    Y 780, Bpp 4" (the location of the video window relative to the root
>    window)?  

petry@netwolf[94]$ ./fxtv -geometry +0+700
geometry = X    5, Y  781, Bpp 4

> 
>    For calibration, does -geometry +0+0 give you an Fxtv window in the
>    upper-left corner of the desktop and print out something very close to
>    "X 1, Y 80, Bpp 4"?

petry@netwolf[95]$ ./fxtv -geometry +0+0
geometry = X    5, Y   81, Bpp 4

> 3) See if this makes any difference:
> 
>     --- xutil.c.ORIG        Mon Sep 29 18:21:43 1997
>     +++ xutil.c     Mon Sep 29 18:21:51 1997
>     @@ -735 +735 @@
>     -    XUTILGetVisualBpp( display, vi, &Bpp, NULL );
>     +    XUTILGetVisualBpp( display, vi, NULL, &Bpp );

No difference.

> DGA pitch is right, or you wouldn't see a solid rectangular video block.
> Could be that XTranslateCoordinates doesn't work correctly on Milleniums
> for 1280x1024x24bpp.
> 
> BTW, please try this on XFree 3.3.1.  

XFree86 Version 3.3.1 / X Window System
(protocol Version 11, revision 0, vendor release 6300)
Release Date: August 4 1997
	.
	.
(--) SVGA: PCI: Matrox MGA 2064W rev 1, Memory @ 0xe0800000, 0xe0000000
(--) SVGA: Linear framebuffer at 0xE0000000
(--) SVGA: MMIO registers at 0xE0800000

> 
> Hey Amancio.  You've got a Millenium, right?  Do you see this too (or can
> you run at 1280x1024x24bpp)?

It feels like there may be a 1024 byte offset from the beginning of the linear 
frame buffer.  When I first go the board and ran in 1600x1200 mode the video 
was shifted
both horizontally and vertically (I guess pitch was wrong). I'll try it agai 
and
let you know if it gives anything interesting.