[Brlcad-tracker] [ brlcad-Support Requests-1392029 ] Raytrace Issue

[SourceForge.net <no...@so...>]

Support Requests item #1392029, was opened at 2005-12-28 10:23
Message generated for change (Comment added) made by stanlje
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=640803&aid=1392029&group_id=105292

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Raytrace
Group: release 7.6
>Status: Open
Resolution: None
Priority: 5
Submitted By: James Stanley (stanlje)
Assigned to: Sean Morrison (brlcad)
Summary: Raytrace Issue

Initial Comment:
I had the systems administrator load BRL-CAD 7.6.4 on 
one of our 8 node linux servers running Red Hat 
Enterprise Linux AS release 3 (Taroon Update 6).  My 
client is a Dell PC (Windows XP) running X32 version
6 Build 1. Since BRL-CAD is new, I have been running 
the tutorial in volume II.  In lessons 4 and 5, it 
appears the raytrace does not work since, nothing 
appears to be happening when I press the button.  I 
have tried to change the background but again, it 
appears nothing happens in the GUI window.  The 
command line window states "..RayTracing Complete" or 
something along those lines.  Please help.

----------------------------------------------------------------------

>Comment By: James Stanley (stanlje)
Date: 2005-12-29 10:59

Message:
Logged In: YES 
user_id=1411147

Thank you for all of your help.  The rt -F/dev/Xl -s800 
worked.  Attached please find the bmp file with that 
rendering.... apparently the ogll (Open GL) did not work.  
Attached you will find another file that has that 
rendering.  It had the framebuffer with no object in it.  
I ran fbhelp and included it as well in the Wordpad file.

The Wordpad file provides the response with each entry 
after it ran.  I also ran ./sierpinski3d with response 
Xlib: connection to ":0.0" refused by server, Xlib: No 
protocol specified but it renders the 3d screensaver.

I would appreciate any suggestions or fixes that you may 
have.  I am not very Open GL savy...

Thanks and Cheers,
James


----------------------------------------------------------------------

Comment By: Sean Morrison (brlcad)
Date: 2005-12-28 22:58

Message:
Logged In: YES 
user_id=785737

There could be several causes for what seems to be "nothing happening" in 
the GUI window.  Start out with a quick test of the raytracer by itself first, 
going to a plain X11 window.  Run this in the mged command window:

rt -F/dev/Xl -s800

(That's dev ex-ell, not dev ex-one)
That rt line should render to an 800x800 lingering X11 framebuffer window.  
If it does work, try this next:

rt -F/dev/ogll -s800

That should render to a lingering OpenGL X11 framebuffer window.  The 
mged graphics window is OpenGL by default for 7.6.4 under Linux, so I 
suspect that's what's failing.  There can, however, be many causes for it to 
fail.

Let me know how those two tests turn out.  If anything, the first should 
provide a means forward while the issue can be looked into.  If either fails, it 
would also help if you run "fbhelp" from outside of mged and provide the 
output here as well.

Cheers!

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=640803&aid=1392029&group_id=105292