Hi, so my goal is to render a little low-quality pyro sim without smoke using karma. The problem is that karma seems to load correctly the volume but won't apply any shader to it, making it invisible on the render.

I have tried multiple solutions such as:
- Assign material in LOPS (PyroShader, MtlxVolume)
- Import Volume/SOP in LOPnet
- PyroBake
- Convert to VDB

None of them is working, I'm probably missing something. Ty for the help.

PS: Don't mind the warning on karma node, there's just no camera.

Hi. Karma by default uses "density" field to sample and generate shading points. Since your volume has no density, you should switch the sampling field to a different field that contains data (use Render Geometry Settings LOP to set "Volume Sampling Field" parameter to "flame" for example). You'll also need to assign a pyro shader in order to produce emission.