OTOY Forums

hello,

is there a way to add volumetric to a light or to the global scene (fog) when using IBL?

thanks

Yes. It's been a while since I've done this - but from memory you add a cube around the render area and set it up with a specular material with a scatter. The camera must be outside the cube. Check the Tutorials forums, or search for fog. It works really nicely, but takes some time to learn the setup.

Paul

Ok, thanks Paul

I tried searching but can not for the life of me figure out how to set up volumetrics. Simsen, did you get this to work at all? I will keep searching..

I have attached a Modo sample scene.

Camera must be out of the "fog box" ("Cube 2" in this case). The emitter is inside (but probably not mandatory).

Set hotpixel to 0 and caustic blur to 1. Use Path Tracing.

The fog material probably needs Scatter < Absorption. Set Reflection as 0 (black), Transmission as 1 (white), Index 0.

Paul

Got it. Thanks. I had to adjust a few things but copied your material exactly. Thanks!!