Houdini – Rendering NURBS / Bezier with Redshift
My geometry disappeared from the render view and it took me a while to understand why… In fact it was because the primitive type of my geometry was not Polygon anymore.
To render NURBS/Beziers with Redshift, you will need to add a node convert before render your geometry.
Network view

Convert Node parameters
Keep convert to Polygon to see your geometry in the renderview.

Resources
https://www.facebook.com/groups/RedshiftRender/permalink/369007023548514/
I tried also to render my objects as Strands but it didn’t work for me. But it’s interesting to know that it exists and it may work for you.