Hi,

I have a scene with 10 lights. I want 10 passes with illumination by each individual light.
I know that for 3 point lighting we can use RGB method. But that won't help with more than 3 lights. I am trying to do it with mantra node and Extra Image Planes option. There is an option called, Export variable for each Light. I am giving “Cf” as a vex variable and “ Export variable for each Light” ON. It creates 10 channels but no information in it.

Plz reply if anybody knows how to do it.

Message passing using categories in the illuminace loop??
the problem with this is that you need to modify the shader to get it working.

Are you viewing the results in the ip viewer? Click on “adapt to full pixel range” and see if there is anything visible then.