Displacement not working

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Displacement not working

Postby jim99 » Thu Aug 03, 2017 5:25 am

jim99 Thu Aug 03, 2017 5:25 am
Hi Guys,

I have tired all options remodel, uv and change numbers of settings but we couldn't solve this displacement tearing/ black edges
can someone enlighten me pls thanks !

Please see image for details, I have also uploaded a file.
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settings.JPG
settings1.JPG
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Re: Displacement not working

Postby paride4331 » Thu Aug 03, 2017 7:06 am

paride4331 Thu Aug 03, 2017 7:06 am
Hi Jim99,
This issue depends on UVmap; to get good displacement effect you need a correct object UVmap.
As you can see in screenshots A (only Octane material) there are rough map errors.
In screenshots B applying a standard 3dsMAx cubic UVmap, something improves.
To get a perfect mapping, you have to unwrap your model.
Alternatively, you could use as a workaround (sometimes it works) a smooth modifier and working with mid-level in displacement node.
Regards
Paride
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01.jpg
02.jpg
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Re: Displacement not working

Postby jim99 » Tue Aug 08, 2017 12:50 am

jim99 Tue Aug 08, 2017 12:50 am
Hi Paride,

Thanks for your reply ! We did unwrap it in maya, just wondering whats a correct uv for solve this kid of issue? We want to paint the diffuse map so standard box UV in max is not helping too much..

We found this tearing/black edges happens more at hard edge surfaces, In Vray there is a option
" keep continuity" which solve this kind of issues. Is there anything like that in Octane we can use?

I noticed your octane displacement setting is bit different from our ones, we are on 3.05.3-4.30 version will this be a cause for this problem?

Cheers

J
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Re: Displacement not working

Postby paride4331 » Tue Aug 08, 2017 8:26 am

paride4331 Tue Aug 08, 2017 8:26 am
Hi jimm99,
As you can see in your screenshot, there are uv textures issues, you can fix it and displacement using unwrapping mode:
https://www.3dtotal.com/tutorial/2177-k ... unwrapping
Regards
Paride
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00unw.jpg
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Re: Displacement not working

Postby jim99 » Wed Aug 09, 2017 1:59 am

jim99 Wed Aug 09, 2017 1:59 am
Thanks for this, I will looking into it .
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