I am trying to achieve something like this in Karma XPU.

volume displacement in arnold [leegriggs.com]


Is there a way to do colored volumes with materialx and karma xpu yet?

I think you're stuck with Mantra for volume displacement

If you are looking for how to render a color volume in Karma, there is a "color with Cd volume" check box on the pyro shader. It's a little confusing; if you are using "Pyro Bake volume" to set up your shader, and have the "Diffuse Volume" set to Cd in the bindings, the pyro shader it creates doesn't have "color with Cd volume" turned on by default.

Hmm, for me in h20 checking that box still wouldn't color my volume.
A workaround was using "Karma Pyro Shader" instead of the "Pyro Shader" created by "Pyro Bake Volume". The checkbox there works.
Thanks for the tip still.