# PBR Materials in a MultiblockDataset

**URL:** https://discourse.vtk.org/t/pbr-materials-in-a-multiblockdataset/9816
**Category:** Development
**Created:** [November 14, 2022, 2:48pm UTC](https://discourse.vtk.org/t/pbr-materials-in-a-multiblockdataset/9816 "2022-11-14T14:48:24Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Thiago\_Neves](https://discourse.vtk.org/user_avatar/discourse.vtk.org/thiago_neves/32/4886_2.png) [@Thiago\_Neves](https://discourse.vtk.org/u/Thiago_Neves)
#### Post date: [November 14, 2022, 3:01pm UTC](https://discourse.vtk.org/t/pbr-materials-in-a-multiblockdataset/9816/3 "2022-11-14T15:01:47Z")

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Its directly related to this post, i believe he is having the same issue but he is trying to solve in a different way, it would work for me too, associating the pbr attributes to celldata.

> [@PBR and cell data for metallic & roughness](https://discourse.vtk.org/t/pbr-and-cell-data-for-metallic-roughness/8867):
>
> 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.

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