Re: Image remapping for panoramic rendering

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Nigel Caughey (ncaughey++at++tvnz.co.nz)
Sun, 13 Jun 1999 20:38:19 +0000


Hi Angus,

> There is no genlock in on the O2 so as I suggested you need to genlock
> the ONYX2 to the sync from the O2. It's all video sync anyway so from a
> software point of view there should be no discernable difference.

This is not strictly true, there is genlock for the video output of the O2, but
not for
the graphics pipe (& yes this is very annoying).

> This would mean getting separate sync and repeating that to the Genlock
> In on the iR pipe.
>
> The O2 video does support video in and MAYBE it would tie 60Hz video to
> the ntsc input and you could then vampire the NTSC from the iR composite
> out and feed that into the O2 analog, but I doubt the O2 actually syncs
> it's video to ntsc in.

Well it definitely does to PAL, so I would be very surprised if not to ntsc, but
as
I said before remember that the graphics pipe is not genlocked to the video pipe,

so you will drop frames & the only locked signal is the video out (as opposed to
monitor).

> > Can you explain that in a little more detail?
> >
> > I'm generating my sync on my Onyx2, pipe0, and I want my O2's to sync to it.

I've cut in a bit late, but I suspect you want to sync the monitor outputs in
which case
Angus is totally correct, the graphics pipe on an O2 is not genlockable (well you
can actually
set the kernel variable, but all hell breaks lose).

Cheers

Nigel

--
Nigel Caughey                         Ph:+64 4 6190906
Software Engineer                    Fax:+64 4 6190483
TVNZ New Media                      Cell:+64 21 746945
Avalon TV Studios                  Email:ncaughey++at++tvnz.co.nz
New Zealand                          WWW:http://www.weatherscape.co.nz/

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