[osg-users] [Toward BufferObject serialization] Geometry serializer FinishedObjectReadCallback???

[Julien Valentin]

Hi,all
I would like to provide osg TransformFeedback serialization feature but something weird forbid BufferObject serialization:
This callback calls setUseVertexBufferObjects(false) and just kill all BufferObject attached the geometry's BufferDatas


Code:
struct GeometryFinishedObjectReadCallback : public osgDB::FinishedObjectReadCallback
{
    virtual void objectRead(osgDB::InputStream&, osg::Object& obj)
    {
        osg::Geometry& geometry = static_cast<osg::Geometry&>(obj);
        if (geometry.getUseVertexBufferObjects())
        {
            geometry.setUseVertexBufferObjects(false);
            geometry.setUseVertexBufferObjects(true);
        }
    }
}; 


I don't understand the utility of this callback (surely because I want to remove it:) )
Does anyone know its purpose?

Thank you!

Cheers,
Julien

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http://forum.openscenegraph.org/viewtopic.php?p=67181#67181