Hello, all. I'm having an issue with mantra, and maybe someone can adress it. I'm trying to render smoke inside a glass sphere, which is just a mantra surface with refraction enabled and some reflections. The smoke was done with a billowy smoke sim, and, when I assign a billowy smoke shader, everything seems fine, and mantra renders all elements correctly. The problem is that I would like to use a fireball shader, but once I asign it to my smoke, it doesn't render inside the glass. I'm not sure what I'm doing wrong. I'm kind of new to houdini so it would be of real help if someone could answer this.

Thanks, in advance, and sorry for any bad english

Cheers.

Which Mantra renderer are you using?

Raytrace or PBR should both work fine.