Re: Earthsky with 3 channels

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Angus Dorbie (dorbie++at++sgi.com)
Wed, 24 Mar 1999 10:59:28 -0800

MIGHT be that you haven't genlocked the pipes and you are seeing a few
millisecond delay between the vertical retrace on various pipes. This
creates the illusion that some of the channels are trailing behind the
others or that there is a spatial split across the channel boundary.

The other thing to check is the clear call in the draw callback for the
channels.

Cheers,Angus.

Joaquin Casillas wrote:
>
> Hello.
>
> I am working in a 3-channel visual simulation and I am having trouble
> with the pfEarthSky model (mode PFES_SKY_GRND or PFES_SKY_CLEAR).
> Whenever I do a 'hard' pitch turn, the earthsky model on the left and
> right channels are not drawing properly. It seems the framebuffer is not
> being cleared correctly in the ground area, like if I was using the
> PFES_SKY mode. The channels are arranged in a channel group, having the
> left and right channels a heading offset, and the earthsky model
> attached to the middle (master) channel.
>
> I am using Performer 2.2, Irix 6.5.1 on an Onyx2 IR.
>
> Any help would be appreciated.
>
> -----------------------------------------------
> Joaquin Casillas Melendez mailto:jcasilla++at++glup.irobot.uv.es
> LISITT (ARTEC) Phone: +34 6 364 2253
> Dept. Electr. & Informatics Addr: Poligono de la Coma s/n
> University of Valencia Valencia (SPAIN)
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-- 
"Only the mediocre are always at their best." -- Jean Giraudoux


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http://www.dorbie.com/

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