Subdivision and OpenSubdiv Attributes - Preserve geometry borders

[jacoblaerdal]

Case:
If you have a plane and add "Subdivision Attributes" to the plane. (https://docs.chaosgroup.com/display/...YA/Subdivision)

Question:
How do you preserve geometry borders? (I know you can make hard edges to the geometry. But this doesn't give me 100% sharp edges.

Is this possible to do this with Subdivision Attributes? I know you can do it with OpenSubdiv Attributes (Osd Preserve geometry borders – specifies whether geometry borders are preserved or not).



Best regards
Jacob Hansen

[Morbid Angel]

I'm not sure about your case exactly without seeing a sample scene, however you can specify an edge using crease edge tool, then opensubdiv will recognize that and keep it sharp.

Imho the preserve geometry border should preserve edges of the geometry which are open, however it seems it does not.

[jacoblaerdal]

... sample scene

http://www.wireguruji.dk/vray/OpenSu...ubdivision.zip

[vlado]

We have no option to preserve geometry borders with V-Ray subdivision. You will have to use OpenSubdiv in that case.

Best regards,
Vlado

[jacoblaerdal]

...Thanks for the reply. And good to know.

In future releases i hope that Subdivision Attributes will be able to Preserve geometry borders. So it´s possible to take advantages of view-dependent rendering and Preserve geometry borders.

Best regards
Jacob Hansen
Laerdal Copenhagen

[vlado]

Yes, I will make a note about it.

Best regards,
Vlado

[jacoblaerdal]

I also hope that Subdivision Attributes will be able to render with Crease

[vlado]

This we won't do, unfortunately. You'll have to use OpenSubdiv for that.

Best regards,
Vlado

[jacoblaerdal]

... roger

Best regards
Jacob Hansen