Setting BRDF Model material option from Unity

mmortall · Fri May 03, 2019 2:27 pm

Hello. I am trying to set BRDF Model option in Octane for some materials.

As I understand UnityMaterial class is responsible for this.
But UnityMaterial class have methods to set shader properties and features only. But I see no way to set node parameters like BRDF Model, Sheen etc.
I see that there are some PinId related to BRDF (P_BRDF = 357) but UnityMaterial is not a Node class so I cannot use PinId to set this parameter for UnityMaterial.

jakemetz · Mon May 06, 2019 10:17 pm

+1 I'm also experiencing this issue and it's causing some problems in our workflow. When the BRDF parameter defaults to "Octane" it comes off as unrealistically glossy and there's no way to control it. We need to set it to GGX in order to have it be a realistic material but there doesn't seem to be a way to do this. It does seem to have an option in the Blender plugin, but no luck in Unity... Please advise!

Tue May 07, 2019 1:45 pm

This is currently not possible to do from code or unity.
Ill check if it is possible to add this.

jakemetz · Tue May 07, 2019 4:02 pm

That would be amazing. Thank you, Chris. That's been one of our biggest blockers for quite some time now so it would be a huge improvement for us. Happy to provide any other information if it would be helpful.

Jake

jakemetz11 · Mon May 13, 2019 7:17 pm

Hi Chris,

Just curious if you've been able to find out if this is possible to add or not? Would sure help us out a lot to know if this was something that was going to be possible soon or if we have to find another path forward. Thanks!

Tue May 21, 2019 11:06 am

jakemetz11 wrote:Hi Chris,

Just curious if you've been able to find out if this is possible to add or not? Would sure help us out a lot to know if this was something that was going to be possible soon or if we have to find another path forward. Thanks!

I'll add this to the next build. It will probebly be added in the following weeks.