Subdivide alembic hair in vrayproxy

V-Ray V-Ray for Maya Requests
1

It would be a super nice feature if it was possible to subdivide alembic hairs in vrayproxy.

2

Yes, I think it’s somewhere on the “to do” list so hopefully we’ll get to it soon.

Best regards,
Vlado

3

Hi,

Any news on when this feature will be available?

Thanks!

4

Apparently we added the option in 3ds Max, let me ask about Maya.

Best regards,
Vlado

5

Aha, I must have overlooked the feature and the fact that this post is in a maya-thread. It is indeed there (in 3ds Max).

However, (and this might also be relevant to the maya implementation of this feature): when tessellating the hair, vertex color channels and other additional channel info change in an undesired fashion.
I exported curves/hair form Houdini with a gradient mapped vertex color along curve-length. Imported in 3ds Max 2017 (vray 3.60.02) with VrayProxy, added a basic shader with a vertex color map in the diffuse. rendered and it looks as expected. But when turning on tesselate hair, it does not interpolate the vertex-data but does something else. As you can see on these screenshots.

I also added a zip with the ABC-file. test_v04_.zip

Any ideas on what’s happening?

NoTesselation_v01.jpg
NoTesselation_v01.jpg1054×474 99 KB
Tesselation_v01.jpg
Tesselation_v01.jpg1054×474 92.8 KB
.

Cheers,
Tim

NoTesselation_v01.jpg
NoTesselation_v01.jpg1054×474 99 KB

Tesselation_v01.jpg
Tesselation_v01.jpg1054×474 92.8 KB

test_v04_.zip (1.17 MB)

6

Is there an update on this issue?

It would be great not to have to subdivide the curves before exporting from Houdini, as this heavily increases filesizes.

--
Jacob
Head of Pipeline @ Ghost VFX

7

This is fixed and included in the Update 2 release that came out yesterday. V-Ray Next for Maya Update 2 now available - Announcements - Chaos Forum