📅  最后修改于: 2022-03-11 14:58:28.583000             🧑  作者: Mango
Roughness shows how sharp or blurry the reflections are while
specular shows how noticable or how bright they are.
In other words, specular doesnt change how the reflected image
looks but a low specular would make it very subtle and hard to
see while a high one would be very noticable (almost like a
transparancy value for the reflected image).