Other shaders have handheld dynamic lights built in which is good because it's not laggy like lambdynamiclights which is the only way to get dynamic lights with this shader on iris right now.

Hello. There is no way to implement dynamic lights from the shader. The shaders that simulate this effect only illuminate depending on the distance to the camera when they have a luminous object in their hand, but they do not really obey the lights.

I'll consider including it, though I'm a bit short on time right now, and have other changes pending first.

A dynamic light simulation was added in the latest version.