Volume Shader as Clouds

Maxon Cinema 4D (Export script developed by abstrax, Integrated Plugin developed by aoktar)

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devstarn1_2
Licensed Customer
Posts: 5
Joined: Tue Sep 01, 2020 9:15 pm

Good day, I've been working on a render for planet Earth. I used a octane fog volume to generate the atmosphere, and a sphere with a cloud map texture for the clouds, but someone suggested I use a volume for the clouds instead of just a sphere with a material. I attempted to use an 8k cloud map texture from NASA blue marble into the texture field in the generate tab of the fog volume shader, but whenever I render the look is very poor and looks warped. It seems to function well enough with a noise shader through Cinema 4D's built in feature.

The first example sphere is with a basic built in noise shader, which shows it functioning. The second is with the nasa cloud map.

Though my settings in the example reflect no render multiplier and a low voxel count, my settings at render time were approx 3cm for Voxel Grid and 10 max for the multiplier which should be more than enough to provide quality? My computer begins to chug going any lower much past this number.

Any help is appreciated!
Attachments
example1cloudsphere.jpg
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bepeg4d
Octane Guru
Posts: 10365
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Hi,
in Volume object, the noise works in 3D space, while your texture needs a Spherical projection.

Have a look at this example using the c4d Volume Builder:
F51FCBC2-7FE8-4687-9420-4FA41C50D548.jpeg
There are two spheres to create a caved volume sphere, and a Shader Field, to get the texture projected in Spherical projection.

ciao,
Beppe
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