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displacements

Posted: Wed Nov 04, 2015 5:41 pm
by pryzm
Running into a little issue with rendering. It seems that octane doesn't want to keep the displacement information after render. Example, I have some suckers on octopus tentacles that are created using displacements on the material. I open IPR and the displacements are reversed (suckers go in instead of out). It seems that in order for it to work correctly, I have to change the subdivision order from Last to After Displacement and then back to Last. Sometimes that doesn't work, so I change the amount of subdivisions to a higher or lower number. Those are the options I play with when it's not working and for the most part I can get it to work, but it's frustrating to have to keep messing with those in order to get a consistent render.

The only thing I'm changing between renders is the animation, I'm not changing any of the materials. I've tried this both with Full Scene Update, and Updated Scene settings and it does seem consistent between the IPR, F9, and F10 renders.

thanks,

bruce

Re: displacements

Posted: Wed Nov 04, 2015 5:44 pm
by juanjgon
Are you using the LW displacement? ... perhaps you could try the Octane native displacement.

This kind of issues sounds to me like a LightWave problem. If you are using the LW displacement, do you know if the LW native render engine shows the same problem?

-Juanjo

Re: displacements

Posted: Wed Nov 04, 2015 9:04 pm
by pryzm
as far as I know, I'm not. I'm using the Octane displacement node in the Materials node editor. Maybe LW is confused as to which one to use?
Octane_displacement_issue.jpg

Re: displacements

Posted: Wed Nov 04, 2015 9:21 pm
by juanjgon
If you are using the Octane displacement for rendering you must disable all the native LW displacement options. Octane can render the LW displacement without problems, but if you have both LW and Octane displacement in the same object you are going to apply the displacement twice, so you can get any kind of weird effect.

-Juanjo

Re: displacements

Posted: Wed Nov 04, 2015 9:55 pm
by pryzm
yeah, I'm not using any LW displacement, only Octane...

I was thinking LW might be confused (even though I'm not using the native displacement).

Re: displacements

Posted: Wed Nov 04, 2015 10:00 pm
by juanjgon
Weird ... can you send me a sample scene with this problem?

-Juanjo

Re: displacements

Posted: Wed Nov 04, 2015 10:07 pm
by pryzm
yeah, it is...on its way. thanks for looking at it.

bruce