Re: [Plib-devel] [PATCH] crease for ac3d files and speedup

[Steve B. <sjb...@ai...>]

Mathias Fr=F6hlich wrote:

> But not for functions only operating on ssg*'s datastructures like=20
> ssgVtxTable::getNumColours(), ssgBranch::recalcBSphere(),

If recalcBSphere is being called in an otherwise static scene, there
is something very seriously wrong - either with the application or
with SSG.

The system is only supposed to recalc the bounding sphere if it's
been 'dirtied' by changing a low level vertex or moving a Transform
node.

The fact that:

> ssgEntity::dirtyBSphere(),

=2E..is also in your top ten list says there is certainly some kind of
a bug.  The only time the bsphere should be dirtied is for the
(presumably rare) moving models and things that move vertices
around outside of SSG.   Since moving models are usually put into
the tree very near the top in most applications, those are very
unlikely to cause much CPU time consumption.

This needs to be tracked down - recaclulating bounding spheres
needlessly will *cripple* performance.

---------------------------- Steve Baker -------------------------
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