How to add Occlusion culling to GridMap？

Help Shaders
1

Godot Version

V4.2.2.stable

Question

I use the gridmap node, the node property Mesh Library is set to a block_library.tres that I defined.

          ===block.tscn
          =Node3d
          ==MeshInstance3D
          ====StaticBody3D
          =====CollisionShape3D
          ==OccluderInstance3D

将其导出为.tres后，用到gridmap无法实现CollisionShape3D的遮挡剔除