[osg-users] Slow optimization and OpenFlight

[Robert Osfield]

Hi Andreas,

Did you try OSG-3.4.x?  I'm wondering about when the regression in
performance might have happened.

I have downloaded the file and will have a look.

Robert.

On 17 November 2017 at 16:14, Andreas Ekstrand
<andreas.ekstrand at remograph.com> wrote:
> Hi,
>
> I'm still struggling with migrating from old OSG 3.2.1 to the latest
> developer release, now 3.5.8.
>
> I stumbled upon a rather serious performance issue here. When loading an
> OpenFlight model with a large number of polygons, the optimization carried
> out in the OpenFlight plugin is unacceptably slow in 3.5.8. It seems the
> culprit is MergeGeometryVisitor.
>
> Here is an example with 150 000 polygons, it takes about 12s to load in
> osgviewer 3.2.1 here and what feels like forever to load in 3.5.8:
> https://www.dropbox.com/s/lmapv0iatn20d1q/house_150k.flt
>
> Has anyone seen this before? Any ideas how I can get it to behave like
> before?
>
> Regards,
> Andreas
>
>
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