Re: Question about Draw callback

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Angus Dorbie (dorbie++at++sgi.com)
Thu, 17 Dec 1998 13:29:24 -0800

Eddy Kuo wrote:
>
> Hello pfers.
>
> 1)
> Is there anyway to extract a draw callback routine, and call the
> routine explicitly.

Which one?

You could have a draw callback and wrap your own draw callback, which
would be exactly what you are talking about but is seems a little
redundant.

>
> 2)
> When I have a channel draw callback, and a node traversal draw callback,
> What is the order of these callbacks being called. (in a multiprocessors
> environment)

The channel draw callback calls pfDraw. In pfDraw, when the node is
reached
in the display list your node draw callbacks will be called before and
after
it is drawn.

>
> 3) Is there anyway to use single process in a multipipe mode

This would hose performance anyway, can't you run multithreaded
and lock down the draws to a single CPU? You get better
pipe utilization, particularly for fill limited scenarios.

Cheers,Angus.

>
> thanks in advance
>
> Ed.
>
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