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texturing volume medium

Posted: Sat May 26, 2018 2:32 pm
by nKo
Hello,
I tried to connect some procedural noise to the scattering input of a volumetric medium and it seem to does'nt work.
I can connect it, but no matter what i change, I don't see the texture.
How can I achieve it ?

I don't want to use any vdb file as a volume, I just want a textured volume as a medium.
any help ?

Cheers

Re: texturing volume medium

Posted: Sat May 26, 2018 5:13 pm
by Phil_RA
Not sure what your exact setup is, but assuming you are not using a voxelized volume I don't think it works. I remember trying to use an RGB texture in scattering and could not, probably because your texture would only be used on the surface. It wouldn't know what the scattering value is as it goes through the medium; let's say it's red on one side and blue on the other, when the ray enters the medium through the blue side, when will it be going through red scattering? It would stay blue all the way and only be able to sample the red on exit.