re: IOCTL error (fwd)

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Lance R. Marrou (marrou++at++vsl.ist.ucf.edu)
Wed, 2 Nov 1994 16:16:43 -0500 (EST)

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In reply to: Chris Seal: "2 copies of 1 viewpoint"

Ok, I found out the source of my problem (which was outlined
in a previous message and included at the bottom here).

Here is an extraction from the Performer man page on pfGetPipe(),
et al.:

     The multiprocessing mode set by pfMultiprocess is used for all rendering
     pipelines. However, IRIS Performer never multi-threads the application
     process although the application may choose to do so. If the application
     itself multiprocesses, all IRIS Performer calls must be made from the
     process which calls pfConfig or results are undefined. When using multi-
     ple pipelines, the cull stage must be forked (PFMP_FORK_CULL). If not,
     IRIS Performer defaults to PFMP_APP_CULL_DRAW.

Thus, I cannot sproc a GUI, it must be run separately in another shell.

_______________________________________________________
IST __ E-mail: marrou++at++vsl.ist.ucf.edu
Visual / / ______ /\____ ______ ______
Systems / / / _ / / __ // ____// ____/
Lab / /__ / /_/ / / / / // /___ / __/_ R. Marrou
________/____//____/\\/_/ /_//_____//_____/____________

---------- Forwarded message ----------
Date: Tue, 1 Nov 1994 15:41:56 -0500 (EST)
From: Lance R. Marrou <marrou++at++grail.vsl.ist.ucf.edu>
To: Performer List <info-performer++at++sgi.com>
Subject: IOCTL error

Ok, I hope this is not a bogus question. I have an application
which sprocs the IG and GUI. The IG, of course, initializes and
runs Performer (right now only one process APPCULLDRAW). I want
the GUI to be able to use GL (or whatever, X). I understand the
drawbacks with respect to performance, but I at least want it
to work. Is this even possible?

I get some kind of IOCTL error from OpenRN -1 (I think). And then
the machines locks up ice cold. Only the on/off switch and reset
button work at that point (Which is why I cannot remember the
exact error statement :).

Next message: Jim Helman: "Re: pfmalloc error"
Previous message: Caroline Roback {70787}: "pfmalloc error"
In reply to: Chris Seal: "2 copies of 1 viewpoint"

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