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[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

Hi,

Say I have a Gl1_A functor for shapeA.
I derive shapeB : shapeA.

The rendering dispatch will be able to display shape B without the need 
of implementing a Gl1_B, that is very convenient in most cases (for 
instance, currently, Aabb functor for cylinders works with 
ChainedCylinders as well).

But what if I want to force a different functor for B? I just tried 
deriving Gl1_B : Gl1_A, but it seems Gl1_A will always be used to 
display B, witout looking down the inheritance tree. Is there a simple 
workaround?

Bruno