Vray for Grasshopper untrimmed surfaces

[Pbuskermolen]

I am trying to render radiance meshes from Ladybug. For this, I wrote a small grasshopper script to go from mesh to brep and to extract colour information. However, this leads to trimmed surfaces that apparently V-ray within Grasshopper can't handle (see image). Doing the same thing in Rhino works fine. Any idea how to work around this issue?

Also, the render returns with just a single colour for the geometry, while I connected 207 surfaces and 207 colours to the V-ray geometry component. Any tips?

[Peter.Chaushev]

Hello,

The V-Ray Material input in Grasshopper does not currently support multiple colors.
As for the rest of your problem, could you please share the project for investigation (either through PM here or in email addressed to support@chaosgroup.com with a mention of this forum thread).

Kind regards,
Peter

[Peter.Chaushev]

Thank you for providing the project files!
V-Ray renders the input geometry as is (in this case, untrimmed faces). You can link the mesh node directly to the V-Ray Geometry's Geo input and it will render the faces properly trimmed.
I've logged a ticket about support for direct vertex color rendering in Grasshopper. However, I cannot yet state whether this will be included in the upcoming update or the one after.

Kind regards,
Peter

[Pbuskermolen]

Thanks for the replies! Would be a very powerful combination to use Ladybug and V-ray alongside each other in the future. When is the next update scheduled for?

[Peter.Chaushev]

There is no release date set yet. The team is actively engaged in bug-fixing so timetable is still shifting.

Kind regards,
Peter