Volumetrics just go black

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lalllall
Posts: 20
Joined: Thu Sep 17, 2015 5:25 pm
Which 3D software do you use with Maxwell?: Cinema4D

Volumetrics just go black

Post by lalllall » Thu Oct 22, 2015 6:38 pm

I have a problem with volumetrics. When i just add a volumetric to a null and keep the values at the default it renders the why its suppose to but as soon
as a change a single parameter the render just go completly black. I work with 3.1 and cinema r14.
Anyone who knows how to solve this?

JDHill
Posts: 9499
Joined: Wed Nov 16, 2005 3:02 am
Which 3D software do you use with Maxwell?: Rhino
Location: desk #861

Re: Volumetrics just go black

Post by JDHill » Thu Oct 22, 2015 7:00 pm

First, please update your Maxwell Render installation, and Maxwell for Cinema plugin, to the current versions, which are available from your account at https://portal.nextlimit.com. Then, please make sure that you have assigned a material to the volumetric, and let me know if the issue still occurs.
Next Limit Team

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Neb
Posts: 130
Joined: Sun Dec 15, 2013 9:00 pm
Which 3D software do you use with Maxwell?: Cinema4D
Location: Poland
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Re: Volumetrics just go black

Post by Neb » Thu Oct 22, 2015 8:45 pm

Hi

The current Maxwell release Cinema plugin works with the voulmetric. The previous beta version had problems that volumetrics on null doesn't work. Now it works but I also achieved a black screen when I use 1 default value for the fog. With less values works fine ( honestly I use a minimal 0.001 value :) ). I'm going to test it. I always put very bright gray lambertian material to the fog object.

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Neb
Posts: 130
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Which 3D software do you use with Maxwell?: Cinema4D
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Re: Volumetrics just go black

Post by Neb » Thu Oct 22, 2015 10:34 pm

I made fast test. Please look at images below. First is for fog density at minimal possible value in Cinema ( it will be good to decrease it to achieve leff density too ). Next one is for 0,01 and the third for 0.1 value. The null covering the entire huge scene. Fog material on the last image. I apologize in advance if I miss something :)

Image

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Image

lalllall
Posts: 20
Joined: Thu Sep 17, 2015 5:25 pm
Which 3D software do you use with Maxwell?: Cinema4D

Re: Volumetrics just go black

Post by lalllall » Mon Nov 23, 2015 12:18 pm

I got it to work as well but it seems hard to get a volumetric light to work nicely. I real world fog is hardly seen by frontal lighting but this effect seems to be hard to replicate. I tried alot of diffrent
material options, with just transperancy and keeping reflectance zero at black but it stil doesnt really seem to work as it does in real life.

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