Question Finally got working stencil on HDRP Lit with light/shadows (See an objects through other objects)

Hello, finally I got working stencil on HDRP Lit with light and shadows but this solution have one strange bug, maybe you can understand why it happening because I really dont know how fix this.



Here is repo with modificated lit shader: https://github.com/mirgorodalexander/Stencil-HDRP

What I've done:
- Remove string to got custom settings in shader

Code (CSharp):

1. CustomEditor "Rendering.HighDefinition.LitGUI"

- Add this strings in properties section

Code (CSharp):

1. _StencilMask("Stencil Mask", Int) = 0
2. _StencilWriteMask("Stencil Write Mask", Int) = 0
3. [Enum(UnityEngine.Rendering.CompareFunction)] _Compare("Compare", Int) = 0
4. [Enum(UnityEngine.Rendering.StencilOp)] _Pass("Pass", Int) = 0

- In "GBuffer" pass replace Stencil with this

Code (CSharp):

1. Stencil
2. {
3.     WriteMask [_StencilWriteMask]
4.     Ref [_StencilMask]
5.     Comp [_Compare]
6.     Pass [_Pass]
7. }

- In "MotionVectors" pass replace Stencil with this

Code (CSharp):

1. Stencil
2. {
3.     WriteMask [_StencilWriteMask]
4.     Ref [_StencilMask]
5.     Comp [_Compare]
6.     Pass [_Pass]
7. }

Next I create two materials "Inside" and "Outside"
Inside properties:

Outside propeties:


And that's it, it working, but have strange bug, at some positions of "Camera" and "Editor Camera" inside objects disappeard, I don't know why, maybe you can understand how fix this?

Here is the BUG:

 

maybe technical support unity will write something? Epic keeps running away ...

 

I don't know why they blink, but objects may disappear if bounding box is outside of camera frustum

 

I downloaded your project. initially shader didn't work so i added back custom setting and set surface type to transperent, then disable that line again and got shader to somewhat work, then i add you stencil code to "TransparentDepthPrepass" and "DepthOnly". Now it seems to work complitly fine, dont see blinking or any other bugs. Using unity 2022.1.8

 

I Made a working shader with the help of your post and amplify shader editor.
at first i also had the flickering issue but i fixed by increasing the render queue of the inside objects.

i will attach the unity package here. or Github link.
note that there are two shaders and the only difference is the "inside" shader does have higher render queue in shader because i could not figure out how to expose the render queue into material inspector.

 

Can you attach a screenshot of the pass setting in ASE?
because this is what i got from my side

 

I'm trying to get this stencil to work on backfaces for a cross-section shader and PassBack Replace isn't working. It seems like no matter what I try, I can't get the stencil buffer to write the ref value to the backfacing pixels.