Re: Hangup during pfswitch
John Rohlf (jrohlf++at++tubes)
Tue, 1 Mar 94 09:20:51 -0800
>I have a problem using Performer, which I
>hope someone will be able to explain. I
>have a pfswitch, which has two nodes, 0,1.
>When I switch on node 1 (node 0 being the
>default) the display hangs for up to 3 seconds, then
>it starts going again with the correct node switched in.
>Interestingly, the application process keeps
>going during the hangup. Indeed, printing the results of pfFrame,
>which appears to return the number of the rendered
>frame, then it returns as if the frames have been
>rendered. When I switch back to node 0 then there
>are no problems. Other aspects of this is that CPU
>usage seems to become very high during the hangup.
>I have a 4 150 MHZ cpu Onyx with VTX graphics. Does
>anyone have any explanations or advice?
You might have switched in geometry which contains textures.
The first time a texture is rendered it must be formatted by the GL which
takes a long time. When multiprocessing (which is the default for
your system) the application process is independent of the draw and
will continue even if the draw completely stops. pfFrame's return
value is the application processes' frame count, not the number of
frames rendered.
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on Mon Aug 10 1998 - 17:50:11 PDT