idk

Runtime/Engine/Code/Shaders/StencilMask.shader

@@ -0,0 +1,22 @@
+Shader "Unlit/StencilMask" {
+    Properties {
+        [IntRange] _StencilID("Stencil ID", Range(0, 255)) = 0
+    }
+    SubShader {
+        Tags {
+            "RenderType"="Opaque"
+            "Queue"="Geometry-1"
+            "RenderPipeline" = "UniversalPipeline"
+        }
+
+        Pass {
+            Blend Zero One
+            ZWrite Off
+            Stencil {
+                Ref [_StencilID]
+                Comp Always
+                Pass Replace
+            }
+        }
+    }
+}