Displacement not rendering on subdivision model?

[dre4mer]

I'm not sure if this is something wrong or if i'm doing something wrong.

I have a model from mudbox lowest level, i'm trying to subdivide it to smooth it out a little. Because it's the lowest level it has kind of jagged looking faces. My displacement looks great on it, but it's on those jagged faces. But if I add subdivision to the model it appears to smooth out the displacement, pretty much removing it. Is this how it's supposed to work? I'm using Vray next.

Thanks for any assistance!

[dre4mer]

Setting subdivision and displacement bounds to explicit allows me to see it but just barely peaking through the subdivision. At least I know it's actually there. But how can I get it to look the way it's supposed to though?

[vlado]

This generally works fine for me. Can you post an example or send it to me at vlado@chaosgroup.com ?

Best regards,
Vlado

[Morbid Angel]

Displacement isn't as straight forward as you would expect. Did you export a 32 bit tif or exr for your displacement? Do you use udim tiles or a single tile? did you set your clipping boundaries? Is your scale the same between mudbox and maya? did you allow negative texture color in your file node?

[dre4mer]

Hi guys,

32 bit EXR from mudbox, set exr to allow negative colors, Scale identical between programs, the displacement only shows up on the SUB d model if I set explicit and it's odd looking.

Displacement is working great, it's if I try to use it with SUB that is the problem.

[dre4mer]

No one else has run into this? Is displacement supposed to work fine on SUBD surfaces? I'm going to have to use redshift if I can't get this to work in vray and i'd much rather use Vray!

[dre4mer]

ALRIGHT! After several hours of searching and trying things I found someone who had the same issue and their solution works!

https://forums.autodesk.com/t5/maya-...n/td-p/7849359

This seems like this problem could be fixed if there was a way to allow the min and max settings to be set to negative numbers? Instead of color selectors. Unless I just don't know the proper way to do it. He's using a multiply devide to "fool" the min max to go into the negative

[dgruwier]

If you switch the color picker to RGB instead of HSV, you can type in negative numbers.