This is basically a fresnel lens on steroids. Its basically taking a fresnel lens and bump mapping the depth buffer using a dithering shader. Ingenius! Likely t

This is basically a fresnel lens on steroids. Its basically taking a fresnel lens and bump mapping the depth buffer using a dithering shader. Ingenius! Likely to not be able to surpass 50% light though since that are fresnel lens limits as well, could be a mathematical law.