Hi Sergey,

My overlay node isn't under a camera node, but is it possible that the
overlay projection mecanism is using a camera with subgraph attached to it
and so the update traversal doesn't reach the subgraph ??

Best regards,

2011/2/21 Sergey Polischuk <pol...@yandex.ru>

> Hi, Alexandre.
>
> If your overlay subgraph is under osg camera, then update traversals dont
> reach there, they stop at camera node.
> You can try to add this uniform to stateset of some node before camera in
> scene graph, so it will be updated and shouldn't break anything.
>
> Cheers, Sergey.
>
>
> 21.02.2011, 17:57, "Alexandre Amalric" <alex.pix...@gmail.com>:
>
> Hi osg-users,
>
> I recently tried to attach a fragment shader to a node and set it as an
> overlay subgraph.
> My shader is using a uniform that I want to update, so I attached a derived
> osg::Uniform::Callback  to it but this one is never called.
>
> When the same node is added to the scenegraph and not only as an overlay
> subgraph the callback is called.
>
> Is it possible that the updatevisitor is never called on models wich belong
> to an overlay subgraph ??
>
> For info, I'm using osg 2.8.3.
>
> Kind regards,
>
> --
> Alexandre AMALRIC                   Ingénieur R&D
> ===================================
> PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille
> http://www.pixxim.fr
>
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-- 
Alexandre AMALRIC                   Ingénieur R&D
===================================
PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille
http://www.pixxim.fr
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