Subsurface Scattering in Unity3D URP
Study Ref : https://www.slideshare.net/colinbb/co...
Study Ref2 : https://www.alanzucconi.com/2017/08/3...
Modify from URP Template: https://gist.github.com/phi-lira
Instead of implement on surface shader, I choose to re-implement it in vertex-fragment shader,
in order to having a deep understand of it. still not sure....
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