I'm trying to render something in Karma to test out volume lights, it is a fire sim and i want volume lights in it.
For Mantra, i'm simply using a geo light with the point cloud settings (16 point samples)on my pyro sim.
For Karma, i'm sopimporting the pyro sim, giving it it's materials and then using a rendergeometrysettings with treat as light enabled with the following settings: Light source diffuse 16 and light source specular 1.
For render settings, Mantra is set to default and completely untouched, i'm getting 57 seconds on this one frame.
For Karma, primary samples are set to 20 (from the 9 default) and minimum samples is set to 1. (Motion blur and depth of field options are also unchecked) and i'm getting a noisier result as well as a longer render time at 1 minute and 37 seconds.
I've attached both frames, as well as the way the stages is currently set up.
Am i doing something wrong with trying to render a volume light this way through Karma, or does Karma suffer when it comes to geo/volumes lights as a whole?
Thanks
(First pic is mantra, second is karma)