Triplanar Texture Sliding

[DoubleTwistedCoil]

Have you tried to add an arbitrary UV map to the object? Octane could use it as a reference in animated meshes.

Thanks,
-Juanjo

I've tried and it doesn't work. What are my options? Correctlly unwrapping my geo is impossible i think. I was counting on Triplanar and now I'm in trouble.

[juanjgon]

Sorry, I'm afraid that there is no solution for this limitation yet. That's a common issue with all projections other than UV. Right now the only solution would be to bake the Triplanar Mapping to the UV, then use the result with a UV projection.
Triplanar projection is definitely dedicated to static or animated/non deformed meshes.

Thanks,
-Juanjo

[andrevieira]

Hi guys,

Still no solution to this? It would be super useful to stick the triplanar projection result to the mesh / UVs without the need to bake!
If there's no solution, a follow up question: Is it possible to bake the texture to UDIMs?

Thanks,
André

[juanjgon]

Nope, not yet, sorry. The support of the "rest" attribute is planned for Octane 2022.x, so hopefully, this could help with this issue.

Thanks,
-Juanjo

[jamnique]

Looks like the OSL solution proposed in this thread is working:
viewtopic.php?f=101&t=79837

[EyasArraf]

I agree with FakePilot on this one. While Redshift can have a Triplanar projection on deforming objects using a @rest attribute, Octane still misses this feature.
I think this feature should be suggested to Octane core devs again.

[Drone]

Hi, wondering if this feature has been implemented properly by now in Octane for Houdini?

It still doesn't seem to work in Octane 2025.1 based on the rest attribute and triplanar with rest checked.

[dom_otoy]

Hi, wondering if this feature has been implemented properly by now in Octane for Houdini?

It still doesn't seem to work in Octane 2025.1 based on the rest attribute and triplanar with rest checked.

Hey there!
Sorry for the delayed reply.
For rest to work, you have to enable it in the projection/triplanar node, but also set your rest attribute in the sop context on your geometry (for example using a rest sop node), and enable it in the object parameters.
Hope that helps!

[Drone]

Hey there!
Sorry for the delayed reply.
For rest to work, you have to enable it in the projection/triplanar node, but also set your rest attribute in the sop context on your geometry (for example using a rest sop node), and enable it in the object parameters.
Hope that helps!

Hi Dom, thanks for your reply - checking "Rest Position" in the Obj Params on the sop container seems to be what I was missing.
This works for me now, thanks a lot!