Thank you.It really worked.
Enable “Render customDepth pass” for the scene objects(staticMeshActor) I want,add a “PostProcess Volume” with details:“Blendable”-> add this metarial,I delete some unuseful op.
this pre one
But, I need to know how to add a post process without any BP(including material editor). I now hlsl much than BP.Most time I’m using a Cpp and DX to finish to a shader which can write a special effect I want and be debugged well