Re: deleting pfLight's

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John Rohlf (jrohlf++at++tubes)
Sun, 30 Oct 94 12:12:44 PST

>
> Does pfDelete work properly on pfLights? It doesn't seem to do all the necessary
> deletion. Calling pfLightOff( light ) before pfDelete( light ) seems to have an
> infuence, but I still get errors.
>

        pfLights are "reference-counted" by the GL when they are bound
to a target like LIGHT1. Performer does not keep track of these references
so if you delete a currently-bound light you will have problems.
This is why calling pfLightOff( light ) before pfDelete( light ) helps.

        The remaining problems might be due to pipelined multiprocessing
where the pfLight is in use by later pipeline stages for a couple of
frames after you delete it. The workaround is to pfLightOff() then
wait a couple frames before deleting. However, I will investigate the
possibility of pfDelete() automatically delaying the deletion for you.
Note that pfDelete already does this for pfNodes.

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