---------- Forwarded message ----------
From: James J Greensky <gsky51@xxxxxxxxx>
Date: Jan 18, 2007 4:08 PM
Subject: Re: dbe and glx, same machine different processes, affecting each other
To: Marc Aurele La France <tsi@xxxxxxxxxxx>
Marc Aurele La France wrote:
> On Thu, 18 Jan 2007, James J Greensky wrote:
>
>> i have recently been developing application in linux, specifically a
>> imageviewer application, and since all i had to do was blit a 2d
>> image to the screen i programmed it entirely in xlib using the dbe
>> and mit-shm extension. it works very well. Now the reason for this
>> app was in a rendering cluster, machines(including the same one as
>> the displaying machine) would volume render a piece of the total
>> image and send it on to the machine that was the display. The
>> rendering code utilizes opengl and glx. Now if I run the display on
>> a different machine without a rendering code running, the imageviewer
>> app works very well. The problems comes about when I have an
>> instance of the rendering code up, my imageviewer app is no longer
>> double buffered, but appears to be copied into the frame buffer. I
>> have tried many ideas to correct this, as I thought that maybe the
>> rendering code was using to much card memory and booting imageviewer
>> out of the card. Now I did not write the rendering code, but the
>> developer insists that he is reducing the memory footprint of this
>> app, but the problem persists. I would very much like to hear any
>> suggestions or insight into my problem, as like I said, I am only a
>> budding x developer, first got my feet wet just 1 1/2 months ago.
>> Thanks in advance.
>
> Do any of your image viewer's calls to Xdbe* functions return an
> error? If so, which one(s)?
>
> Marc.
>
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>
no i do not believe any errors are returned, i have not changed the
default handler for regular errors, as i figured it would show them in
the xterm window if they occurred. i will update the code to list
regular errors in the log file and see if any show up, but no, i do not
see any errors occuring in the dbe code. I would say no errors are
returning, will reply again if i see something in the log file.
jim.
