Upres CVEX volume

[ITdreamer]

Hi

I have sphere turned into vdb.  The camera is inside the sphere. The VDB resolution is not too high to get much details.

I've created CVEX shader with noise mapped to density and applied it to volume VOP. I've also created a VEX Volume Procedural and mapped it to CVEX, and in the Render panel of the Sphere I set Procedural Shader to VEX Volume Procedural.

From this moment I thought, that the resolution of the VDB is not matter, because of CVEX shader, but I was wrong. If I decrease the resolution of the VDB I get less detailed result in the render.

What am I doing wrong? How can I get high detailed volume on render without increasing the resolution of the VDB?

Thanks

I've attached my simple scene.

1.hip

[ITdreamer]

I seems nobody knows )) Or the problem is too complicated to try to explain what's the problem

[sekow]

had a quick glance, you have to apply that vex procedural volume to the obj.

you just rendering the lo res vdb.

 

and if you want to sample what you did in sops, you need to get it somehow into the cvex shader too.

 

check the file. 

1.hip

Edited February 7, 2016 by sekow

[ITdreamer]

Oh, thanks.

I'm trying to replicate what you've done.

As I understand, you've created new geo and mapped vex_volume_procedural to it. Looks like thats all.

 

I did the same, but I get a black screen ((.

[ITdreamer]

Oh, I found what was wrong.

 

Ok, thats clear for me.

 

Now how can I upres and get more details in render?

[MagicRej]

You can check the cloud rig from shelf. That good example from sesi. Hope this help you.