Modo zbrush octane displacement map issue.

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Modo zbrush octane displacement map issue.

Postby Greggers » Fri Mar 03, 2017 12:30 am

Greggers Fri Mar 03, 2017 12:30 am
Hi guys, I could really do with some advice if possible.

I have a mesh from zbrush which is high geometry and even decimating it will kill modo so I am using a displacement map. The map works in the modo render and in vray, you can notice the holes where the eyes should be but when I render it in octane there is displacement but of little effect. I didn't play with any vray setting or add a vray material i just set the displacement distance in modo to 1m which is a normal workflow coming from zbrush. I have set up octane and adjusted the power of the map but still it doesn't give me the detail i get from vray or modo.
I looked around the forums and I found someone talking about octane and modo displacement so I tried changing the kernel settings and the octane preference settings the way they mentioned i.e. - modo render cache on/off and octane - enable/disable poly displacement and still it won't budge.
I would really like to use octane for this one as I only just bought it and I want to use it in my workflow.

Thank you to any guidance or advice, it will help immensely for future projects.
Gregg
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Screen Shot 2017-03-03 at 00.20.30.png
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Screen Shot 2017-03-03 at 00.25.19.png
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Re: Modo zbrush octane displacement map issue.

Postby face_off » Fri Mar 03, 2017 2:22 am

face_off Fri Mar 03, 2017 2:22 am
May I suggest trying with the new Octane 3.06 build of the plugin (pre-release available at https://render.otoy.com/forum/viewtopic.php?f=34&t=55078&p=306464#p306464), since Octane 3.06 contains some displacement mapping improvements. Also be aware that very long, thin triangles with displacement may cause artifacts in Octane.

Paul
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Re: Modo zbrush octane displacement map issue.

Postby Greggers » Fri Mar 03, 2017 8:09 am

Greggers Fri Mar 03, 2017 8:09 am
I am on OSX Mate. When will this build be available?
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Re: Modo zbrush octane displacement map issue.

Postby face_off » Fri Mar 03, 2017 8:24 am

face_off Fri Mar 03, 2017 8:24 am
I am on OSX Mate. When will this build be available?
I will do the OSX build once the release is ready. I am aware of an issue with Octane 3.06 TEST 2, so it will need to wait until TEST 3.

Paul
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Re: Modo zbrush octane displacement map issue.

Postby Greggers » Fri Mar 03, 2017 9:59 am

Greggers Fri Mar 03, 2017 9:59 am
Cool, cheers.
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Re: Modo zbrush octane displacement map issue.

Postby Rafael-Vallaperde » Thu Mar 30, 2017 7:49 pm

Rafael-Vallaperde Thu Mar 30, 2017 7:49 pm
Hey guys! +1 here, i am using the Cinema4D plugin, so this is probably an issue related to the standalone.
Have a look:

Untitled-17_small.jpg

Untitled-17_crop-1-beauty.jpg

Untitled-17_crop-1-clay.jpg

Untitled-17_crop-2-beauty.jpg

Untitled-17_crop-2-clay.jpg

Untitled-17_crop-3-beauty.jpg

Untitled-17_crop-3-clay.jpg


Any ideas on how to solve this?

Cheers!
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Re: Modo zbrush octane displacement map issue.

Postby face_off » Thu Mar 30, 2017 9:15 pm

face_off Thu Mar 30, 2017 9:15 pm
Hi Raf. Very long, thin polygons can create displacement artifacts. Have you tried the latest 3.06 build? It contains some displacement mapping improvements.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke
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Re: Modo zbrush octane displacement map issue.

Postby Rafael-Vallaperde » Fri Apr 07, 2017 8:01 pm

Rafael-Vallaperde Fri Apr 07, 2017 8:01 pm
Hello Paul! Long time no see!

Yeah, this test has been generated on V 3.06 test 2.
The polygon spacing is pretty god(a la zremesher) it shouldn't be there because of weird ration on polygon's lenght.

Any ideas on this? it seems like a core problem and not a plugin issue.

Cheers! :D
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Re: Modo zbrush octane displacement map issue.

Postby face_off » Fri Apr 07, 2017 8:50 pm

face_off Fri Apr 07, 2017 8:50 pm
Any ideas on this? it seems like a core problem and not a plugin issue.
Raf - I suggest you post an ORBX demonstrating the problem to the Octane Standalone 3.06 TEST 4 thread, where the Otoy devs can take a closer look.

Paul
Win7/Win10/Mavericks/Mint 17 - GTX550Ti/GT640M
Octane Plugin Support : Poser, ArchiCAD, Revit, Inventor, AutoCAD, Rhino, Modo, Nuke
Pls read before submitting a support question
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