Re: Part of the screen does not get redrawn ....

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Rémi Arnaud (remi++at++remi.engr.sgi.com)
Thu, 18 Sep 1997 09:14:16 -0700 (PDT)

dcibiceli++at++etcusa.com wrote:
>
> Dear Performers,
> I am displaying a HUD (Heads Up Display). I have tied key
> combinations to test the pitch and roll movements. When I pitch up,
> some of the ladder ( roll angles drawn on the HUD ) gets printed on top of
> each other. It is as if a specific part of the screen ( horizontal band) does
> not get redrawn for specific pitch angles. Every thing drawn in that
> horizontal band of the screen does not get refreshed when a new frame is
> drawn. Thus numbers are printed on top of each other in that horizontal band.
> Any idea why that may happen... I am using the perfly source code with
> performer 2.1 .

 Maybe it gets refreshed, but not cleaned. I guess you are using some
 background polygon to clear the screen. see if the problem stays using
 clear.

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