how in a karma shader can I identify if a surface is receiving light from a source. Imagine things start to glow when ever a shadow covers them. I thought I could just brute force it and build something in sops, but I can't import LOP lights into a sop context.

There are AOV's that give you that type of info, but I actually want it in the shader, and not some comp post process.
Any ideas?

Thanks

Lighting is deferred in Karma: the material has no ability to do lighting or shadowing. A composite post process is probably the correct approach in this case--using the slap comp framework makes it possible to have a post process seamlessly applied without a separate step.

thank you for the info,