PBR and cell data for metallic & roughness

With PBR, is it possible to use cell data to specify metallic and roughness properties, instead of in the vtkProperty of the actor? Our actors typically have a vtkCompositePolyDataMapper2 taking as input vtkMultiBlockDataSet with blocks of varying materials. If each material (or material class, e.g. concrete, masonry, soil, rock, … ) would require its own actor this would increase the number of actors considerably.

Hi Andreas, did you find a solution? Im having the same issues here.

No I haven’t. Maybe @Michael has some suggestions?

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you can see answers here for what is supported and what is not.

I think that should still be fine performance wise, even though it is clearly not the cleanest way to tackle this issue.