[Chimera-users] chimera --stereo crash

Greg Couch gregc at cgl.ucsf.edu
Mon Jan 24 16:36:01 PST 2005

A quibble, chimera is not crashing, it's just refusing to run.

So the likely reason that midas worked and chimera doesn't, is that 
chimera doesn't support split-screen stereo where you lose half of the 
screen's vertical resolution and midas does.  You can confirm this by 
checking the output of the /usr/sbin/glxinfo program.  The st/ro column 
will have a 'y' in it for the visuals that support good stereo.  You can 
also give the -v option to glxinfo and grep for 'stereo=' -- in your case 
I would expect that they are all 'stereo=0'.  If I am wrong, then there 
will be a few 'stereo=1' entries (and it would be a bug that chimera 
refuses to start up).

Depending on the particular IRIX computer you have, you might be able to 
get the good stereo by lowering the default screen resolution and 
restarting the X server by logging out and back in (try 1024x768 first, or 
if you're using an O2, configure the framebuffer to 32+32 mode).  If that 
doesn't work, your next solution would be to find an IRIX computer with 
better graphics or switch to a PC with a workstation-class graphics card 
with stereo support.

See <http://www.cgl.ucsf.edu/chimera/1.2065/irix.html> for a few more 

 	Hope this helps,

 	Greg Couch
 	UCSF Computer Graphics Lab
 	gregc at cgl.ucsf.edu

On Mon, 24 Jan 2005, Liu, Hao-Yang wrote:

> Dear Sir/Madam,
> I am running chimera in IRIX, and when I am trying to run "chimera 
> --stereo", I got this message:
> Unable to find hardware stereo support (Togl: couldn't get visual)
> and when I click ok, the program just quit.
> I can use the normal (mono) mode in chimera. and I think I had the 
> hardware, because I use midas a lot, and never had problem in midas.
> Could you tell me how can I use the stereo mode in chimera? What am I 
> missing?
> Thanks
> Hao-Yang Liu

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