Marmoset Toolbag - Reflex sight effect

[翻译] : 只是在Marmoset上玩弄，看看能否制作出更逼真的反射瞄准镜效果。实现起来相当简单，如果有人感兴趣，我会分享一下制作材料的步骤。

Just playing around with Marmoset to see if I could make a more realistic reflex sight effect.  Is pretty simple to achieve, will post a breakdown on how to make the material if anyone is interested.