Re: wireframe framerate on envelopes

[Oz Adi <oz(at)broadcast.co.il>]

thanks for the explanation :)


Andy Nicholas wrote:
> If you use GeoApprox, it's having to do the subdivision on every frame
> because the envelope operator is modifying the mesh, that's why it's so
> much slower.
>
> The GeoApprox subdivision happens at the very end of the mesh evaluation
> i.e. after all the animation modifiers, shape modifiers, etc. Whereas the
> Local Subdivide operator works on the Modelling stack, i.e. before the
> envelope. If it were possible to put that operator after the envelope
> operator, you'd probably get the same reduced performance as the
> GeoApprox.
>
> Andy
>
>
>   
> > I know there was a lot of talk about the issue of XSI's performance with
> > envelopes.
> >
> > I found something interesting, I took the default low-res  man, with the
> > default rig, and did some test animation.
> >
> > If I up the GeoAprox twice, so it's on 2, I get about 8 fps in hidden
> > line.
> > If I zero it back, but then I select all polygons, and "Local Subdivide"
> > the mesh twice, I get 18 fps.
> > In both methods, I get ~38144 triangles (in the second method I get 38148)
> >
> > I wonder why is  it harder for XSI to play simplified wireframe, than
> > playing a much dense mesh...
> >
> > I guess that why sometimes, people think Maya's play rate is better, in
> > Maya most "envelopes" are more dense
> > because there is no GeoAproximation.
> >
> > BTW with GeoAprox at zero, it played 30 fps.
> >
> > cheers,
> > Oz.
> > www.ozadi.com
> >
> >
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> >     
>
>
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