UnityCACAO-HDRP17/com.unity.render-pipelines.high-definition/Documentation~/realtime-shadows.md

Realtime shadows

Create and control shadows that HDRP updates at runtime.

Page	Description
Set a shadow update mode	Control when HDRP updates shadow maps.
Use shadowmasks	Combine baked and real-time shadows at runtime and render shadows in the far distance.
Use ray-traced shadows	Use shadows that HDRP traces with individual rays.