Question AR: shader to receive light in AR?

edit: SOLVED.


Hi I want to make a shader that processes incoming light as an additive shader.
This image is just a plane with a standard material receiving light from the point light:



This is a photoshop of the effect I'm looking for. So yeah, basically "an additive shader for light".


How would I make this?
Preferably it would also do occlusion and receive shadows. Like this one.

 

Oh, suddenly got it by setting a standard PBR shader graph to surface:transparent and blend: additive.
Let's see what this looks like in AR.