Rest fields via VRayProxy

[daviddeacon]

Hi,

It would be really useful if the VRayProxy loader would take into account the rest data that Houdini can create when exporting abc files.

My main use case would be for use with the VRayTriPlanar node, as it works great for texturing RBD destruction sims but the textures don't go along with the animation. This is still the case if exporting a deforming and none deforming abc file.

This would greatly improve my workflow and avoid less attractive work arounds.

Thanks,
David

[vlado]

You should be able to use the rest data for procedural textures (noises etc) just fine. For the triplanar texture however, things are a bit more complicated as it needs the rest normals and not the rest positions.

Best regards,
Vlado

[daviddeacon]

You should be able to use the rest data for procedural textures (noises etc) just fine. For the triplanar texture however, things are a bit more complicated as it needs the rest normals and not the rest positions.

Best regards,
Vlado

By the looks of it Houdini can add rest normals via the rest position sop. It adds them as a point attribute called "rnml". Would this just work or would it need work on the VRay side?

Thanks.

[vlado]

By the looks of it Houdini can add rest normals via the rest position sop. It adds them as a point attribute called "rnml". Would this just work or would it need work on the VRay side?

Some work will be needed on the V-Ray side, but it's not too difficult. Can you attach an example Alembic that I can use for tests?

Best regards,
Vlado

[daviddeacon]

Sure, here are two different Alembic caches, One deforming geo, and one as geo with transform data.

https://www.dropbox.com/s/md86y3fxy2...put_deform.abc

https://www.dropbox.com/s/3pe7joudad..._transform.abc

Both were exported with rest and rnml attributes.

Let me know if you want any more samples.

Thanks,
David.