PBR Render node: add more models (at least a cube)
The PBR Render node is getting more features and it's incredibly useful to get good renders easily, but it still has a lot of shortcomings.
Aside from sphere and plane, there are no options for other models.
A cube (rounded or not) would cover a lot of scenarios.
(it would also be nice to get a cleaner image - right now there are a lot of artifacts caused by reflections I suppose)
(it would also be nice to have a mask of the DOF to be used for image editing - ie adding clarity)