[3ds max] OpenSubdiv issue

Lether

I'm learning how to use open subdiv in max. As you can see on the image below I run into a visual issue...

I tried all the sliders but it didn't help to solve my problem and watch documentation on youtube but no one have the same issue. I'm pretty sure it's super simple to solve but...

Do you have an idea about it?
Thanks  by advance

musashidan

You need to crease the edges on the flat where the 90 degrees meets. There is too much tension on the surface. Opensubdiv(and creasing generally) is not a perfect solution in every situation, especially where E-poles (3 valance), N-poles (5 valance), and sparse topology are concerned. You may often need to add edgeloops to support the surface just as you do with physical sub-d modeling, just not as many.

E and N poles are vital as it is veritably impossible to model without them. >5 valance poles are to be avoided altogether on non-flat surfaces to avoid smoothing artifacts.

Lether

Thank you for the reply Musashidan. I 'll take care about that for the future then.  

musashidan

No problem, do some research on sub-d surfaces. 30 min reading could save you hours of frustration.

Lether

Ahaha okay. It defenitively worth it so. I will check some documentation right now Thanks again for tips !

Scruples

You could try creasing the verts, although you'll probably just be exchanging one artifact for another.

Lether

Ahaha okay. It defenitively worth it so. I will check some documentation right now

Lether

@Scruples
No actually, i didn't know it was possible. I'll make a try too. Thanks for idea