Re: geoset lists

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Michael Jones (mtj++at++babar)
Thu, 9 Feb 1995 16:26:02 -0800

On Feb 9, 3:41pm, Lance R. Marrou wrote:
> Subject: geoset lists
:If I change the value in a geoset list (say a vertex coordinate, a strip
length
:for triangle strips, or something else) will it take effect immediately? Or
:do I need to call pfGSetPrimLengths() and pfGSetAttr() again? I would think
:the function calls are not necessary, but I would like confirmation. Thanks.

IRIS Performer does not cache any of the values in the geoset
data arrays, so if you make a change it will have immediate
effect. (So immediate that you may not be able to perform the
write to X, Y and Z before the draw process comes along and
uses your new X with the old Y and Z when multiprocessing).

Take a look at the lake demo that shipped with 1.0 and 1.1
(if you still have these laying about). This demo shows how
to do multiprocessed real-time updates in sp and mp modes.

-- 


Be seeing you,      Phone:415.390.1455  Fax:415.965.2658 M/S:8U-590
Michael T. Jones    Silicon Graphics, Advanced Graphics Division
mtj++at++sgi.com         2011 N. Shoreline Blvd., Mtn. View, CA 94039-7311

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