Hi,

unfortunately it is a feature. Texture alphas are not taken into
account while querying the transparency state of a material.

We did it at one point in time but is was disabled, IIRC Dirk
did it and I forgot the reason ;-) so he might jump in to refresh
our memories ;-)).

One immediate workaround, add a little transparency to your
material ;-) so instead of 0 use 0.01, basically something larger than
osg::Eps should work and should not influence the final rendering
to much ;-))

gerrit



> Please see the attachment for a minimalist example. Is this currently
> possible with OpenSG, is it a missing feature, or is it a bug? :)
> 
> I use Gerrit's experimental VRML loader.
> 
> Thanks,
>       Akos



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