Mixed Model Problem

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Micheal J. Williams (mwilliam++at++ldsa.com)
Fri, 23 Jun 1995 13:29:32 -0400

    I know there have to be people out here who are using
performer in mixed-model applications. We recently changed
an application into mixed-mode so that we could access the
X-events associated with the window. We are now seeing
some odd effects, and we don't know if they are related.

    We are on an indigo2 extreme, using performer 1.2 under
IRIX 5.2. The program is written in ada. I notice also
that we use the xlib procedure XOPENDISPLAY to create the
display rather than using pfuOpenXDisplay. We send this
to pfuGLXCreateWindow. I don't anticipate that this would
be our problem, but you may tell me different.

   The application has flight format models moving over
a rasterized database. We use lrectwrite to put up the
ground map, and performer displays the models over that.
Now and then we notice that a plane appears to jump
backwards as though an extra swapbuffer were performed,
and we were jumping back to the previous display.

   Gldebug gives me warnings with every color set, saying
that I am not in RGB mode. With every swapbuffer, it warns
me that I an not in double buffer mode. The doublebuffer
and RGBmode calls had to be removed for the mixed model,
but they are set to true in the creation of the GLX window.
Is this gldebugs problem or is the program actually trying
to run in the wrong mode?

   I appreciate any input you have.

Mike Williams
mwilliam++at++ldsa.com

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