OTOY Forums

Hello,

I was curious if it was possible to mix smoke color in Octane, something like this:

https://vimeo.com/159419702

It is possible in Cycles if you assign color values to the density and temperature channels, but I'm not quite sure if this is possible in Octane?

If I create an x-particle setup with 2 emitters, one emitting blue smoke, and the second emitting yellow = would it be possible to achieve green smoke?

Anyone tried this before?

Thanks fam,
Bobby

So I'm not really sure that you can bring the color channel from the VDB export from X-particles in. However, you can create color ramps based on a specific value, in my case, I used density and a bunch of colors.
To achieve this look from a single VDB volume. As far as mixing the colors, you might be able to produce an optical illusion, which would be physically accurate since smoke never actually mixes together (it's particulate matter).

For XP, you'd have to have two separate cache exports as VDB, then bring them back in with two separate VDB loader objects. Color to taste and see what happens. Here's my result using the above method:

Scroll to the bottom of this page. It seems it's possible with OSL shaders. The link is from the new features link on the main main thread for Octane.

http://www.aoktar.com/octane/OCTANE%20H ... 20191.html

Sorry middle of the page. I can't seem to find a way to edit my post anymore.