Date: Mon, 29 Sep 1997 20:08:41 -0400 From: Randall Hopper <rhh@ct.picker.com> To: "Michael G. Petry" <petry@NetMasters.Com>, Kenneth Merry <ken@plutotech.com> Cc: multimedia@FreeBSD.ORG, Amancio Hasty <hasty@rah.star-gate.com> Subject: Re: Matrox Millenium with 8M and BT848 Message-ID: <19970929200841.34122@ct.picker.com> In-Reply-To: <199709290016.UAA13787@netwolf.NetMasters.Com>; from Michael G. Petry on Sun, Sep 28, 1997 at 08:16:03PM -0400 References: <199709290016.UAA13787@netwolf.NetMasters.Com>
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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.
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?)?
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)?
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"?
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 );
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.
Hey Amancio. You've got a Millenium, right? Do you see this too (or can
you run at 1280x1024x24bpp)?
Randall
Michael G. Petry:
|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?
Kenneth Merry:
|Michael G. Petry wrote...
| 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.
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