How to read the new (in 2026) roughness invert parameter

Developers Ruby API
1

Hello,

There is a new material parameter in SU 2026, which can invert the roughness map.

Is it possible to read the value of this flag from the Ruby API. I don’t see it in the docs.

Thanks,

Márton

2

I couldn’t find a way to do that. I alerted a couple of people about your question.

3

There also does not appear to be a workaround using the C API.

4

Thanks guys for the answers!

Is it possible that a 2026 update will solve it?

Márton

5

Only if they decide to expose the option this year.

6

We made a new bug report, SKOR-21138 in our system, to get this added to SketchUp. The invert roughness feature was added after the other PBR related parameters were added to the Ruby API, and adding that one too was overlooked.

I don’t know at what point SketchUp will be released with that change in it.

1 Like
7

Thanks!

M