Hello,

I am quiet new to Houdini. While trying to make something similar to this: https://vimeo.com/143350173 [vimeo.com] (The MultiColor Stuff)

I made this:

https://drive.google.com/file/d/0B0eRapWT4UuYRzdvS1MtQ2J6ajg/view?usp=sharing [drive.google.com]


Maya gets the density in Arnold, looks good, but i dont know how to get the Cd.x Cd.y Cd.z color to my Arnold Volume Shader Is that even possible? My solution without color Data would be exporting several Sims and then just shade each one in an different color in Arnold/Maya

Thanks in advance
Robin

You can use the vdb vector merge on your color vdb's in Houdini to combine them from Cd.x, Cd.y and Cd.z in to a Cd vector. Then in your arnold shader in Maya you should just be able to use a volume sample rgb node to bring in the Cd channel and a volume sample float node to bring in the density channel. You can then just plug the Cd in to the scattering Color on your volume collector and the density in to the scattering. (Also don't forget to set the grids parameter on your arnold volume shape to include density and Cd so it brings in both channels).

Cheers,

Tony

Thanks Tony

In the time a moderator set this qustion free I already found the solution myself, but I just used 3 Cd Vectors and 3 RGB Nodes.

Greetings
Robin