UV smoothing and openSubD

[FSGFX]

is there a way to get same uv smoothing as maya and mudbox is doing with the standard vray subD..?

if i use openSubD its getting better...
are there any drawbacks if i use openSubD..? i know in the past i got a lot longer scene conversion times...

[vlado]

Can you post a file with that object? I would like us to check the UV layout.

Best regards,
Vlado

[FSGFX]

its just a cube with automatic mapping...

[FSGFX]

did again some subD tests..

and im still wondering wy is openSubD is talking so long for compiling the geo and taking five times more RAM.?
i have set both to max 4 subD...

in the help the opensubD settings arnt that helpfull...


here the log from vray subD...
[2017/Mar/4|20:21:36] V-Ray: Bitmap file "D:/......hdr" loaded.
[2017/Mar/4|20:21:36] V-Ray: (Estimated time remaining: 0h 0m 0.2s): 40 % completed
[2017/Mar/4|20:21:37] V-Ray: Compiling geometry...
[2017/Mar/4|20:21:37] V-Ray: (Estimated time remaining: 0h 0m 0.0s): 96 % completed
[2017/Mar/4|20:21:37] V-Ray: Bitmap file "D:/......<UDIM>.exr" loaded.
[2017/Mar/4|20:21:50] V-Ray: Using embree ray tracing.

and as you see opensubD is taking 16 sec...
[2017/Mar/4|20:18:38] V-Ray: Bitmap file "D:/.....hdr" loaded.
[2017/Mar/4|20:18:38] V-Ray: (Estimated time remaining: 0h 0m 0.0s): 40 % completed
[2017/Mar/4|20:18:39] V-Ray: Compiling geometry...
[2017/Mar/4|20:18:55] V-Ray: Bitmap file "D:/....<UDIM>.exr" loaded.
[2017/Mar/4|20:19:42] V-Ray: Using embree ray tracing.

[vlado]

We didn't code the OpenSubdiv library, so I can't really help. Hopefully the performance is improved in newer versions.

Best regards,
Vlado

[FSGFX]

thanks Vlado...
is there any way to use edge creasing with vray subD.?

[vlado]

is there any way to use edge creasing with vray subD.?

You can do one or two iterations of OpenSubdiv and use the V-Ray subdivisions for the rest.

Best regards,
Vlado

[FSGFX]

i get the feeling pixar is giving away only the leafs of the tree and keeping the more important trunk...
opnesubD should be more efficent and faster not the other way around...

[vlado]

i get the feeling pixar is giving away only the leafs of the tree and keeping the more important trunk...

And you would be correct The purpose of OpenSubdiv is to make it easier for 3D application to support OpenSubdiv in their viewports for modeling purposes, so that Pixar artists can use more tools. It's not designed to help other renderers.

Best regards,
Vlado