Hi,
I am looking to make a material that reflects light right back towards the incoming light vector, like reflective paint on the streets.
I am looking to recreate this material behavior, not hacking it with emissive dynamic materials.
In daylight the material looks like any other, but by night it becomes much brighter than the surrounding materials when the player shines a light on it from the players perspective.
Here are some references:
(amazingly bad photoshop by the paint producer
less bad, but looks emissive
The question is, how can I make a material reflect the brightness of incoming light right back towards the incoming light vector ?
I am not talking about mirrors or shininess, purely brightness.