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Exporting particle system to ORBX without packing to .abc

Posted: Wed Jun 01, 2022 10:08 am
by jobigoud
Hi,
Is there a way to disable the packaging into Alembic scene when exporting to ORBX?

I have a scene with a vegetation system built on top of Blender particle system.
When I open the Nodegraph window on the Blender side it is organized as plain geometry assets connected to scatter nodes: perfect.
When I do File > Export > Octane Orbx (.orbx) and open the result in Octane standalone, all the geometry is packed into a single Scene node called "geometry.abc".

I would find it more convenient to still have access to all the individual geometry and scatter nodes directly so I can further tweak them or swap the assets for others.
I would also expect it to be more robust to export exactly the graph the Blender side is using for rendering.
Maybe there is some other setting or an underlying reason I'm missing?

Thanks

Re: Exporting particle system to ORBX without packing to .abc

Posted: Wed Jun 01, 2022 12:36 pm
by jobigoud
For anyone looking to do the same, I found the following work around: from the Octane Nodegraph window inside Blender, select everything and save as ORBX directly from the context menu of the Nodegraph. This creates an ORBX with the right geometry nodes.

Re: Exporting particle system to ORBX without packing to .abc

Posted: Thu Jun 02, 2022 2:54 am
by abstrax
Be aware though that mesh nodes will be stored as OBJ files, which can't store:
- animations
- hair
- sphere primitives
- motion triangles
- multiple UVs
and probably a bunch of other things I have missed.

Re: Exporting particle system to ORBX without packing to .abc

Posted: Thu Jun 02, 2022 8:15 am
by jobigoud
Thanks, I didn't realize this was a global thing not related to the Blender plugin.
In my case the scattered assets are simple geometry so exporting as OBJ works well enough.