Re: About RM's and channels

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Rob Jenkins (robj++at++sgi.com)
Fri, 02 Oct 1998 12:04:19 +0100

Joaquin Casillas Melendez wrote:
>
> Hello pfAll.
>
> We are developing a visual application with 4 channel output that will
> run on a 4RM's Onyx2 IR. We want to have a resolution of 3840x1024
> managed by the first three channels, and the fourth one overlapping
> 1280x1024 of that area.
>
> Is it possible to have a resolution of 1280x1024 in each channel?
>
> I can't prove it because our Onyx2 only have 2 RM' and 2 channels, and I
> can get as much 2 1024x768 channels covering the entire frame buffer.
>
> Any comment about this issue will be appreciated.

ircombine can be installed and run on any SGI machine, if you run it up
and select a 'target' of 'user defined HW' then edit that HW to have
4RMs ( and 8 channels in your case ) you can try this kind of thing for
yourself. I only tried quickly but I reckon you could only do
4x1280x1024 if you drop the swapbuffer rate to 50hz else you exceed
bandwidth limits. If you ask for 'deepest' pixels, you get medium depth
I think. The max managed area size is 3840 ( which fits OK with what I
think you were describing above with the overlap ).

Cheers
Rob

> Thanks.
>
> -----------------------------------------------
> Joaquin Casillas Melendez mailto:jcasilla++at++glup.irobot.uv.es
> LISITT (ARTEC) Phone: +34 6 360 4484
> Dept. Electr. & Informatics Addr: Poligono de la Coma s/n
> University of Valencia Valencia (SPAIN)
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-- 
________________________________________________________________
Rob Jenkins	Silicon Graphics 	mailto:robj++at++sgi.com

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