Lightmass Character Indirect Detail Volume与Lightmass Importance Volume作用相似，区别在于后者的作用区域只在地面到角色高度之间，而前者的作用区域是整个Volume。

Lightmass Character Indirect Detail Volume
https://docs.unrealengine.com/en-us/Engine/Actors/Volumes#lightmasscharacterindirectdetailvolume

Volume - Lightmass Character Indirect Detail in Unreal Engine 4
https://www.youtube.com/watch?v=_WrCZ3b2Yys

[UE4]Lighting筆記-Indirect Lighting Cache(間接光照緩存)
https://home.gamer.com.tw/creationDetail.php?sn=3315244

十年饮冰，难凉热血。----梁启超《饮冰室全集》