Bug Handles.ztest doesn't work as advertise

The docs say Handles.zTest can be used to control the depth pass handling of handles:

https://docs.unity3d.com/ScriptReference/Handles-zTest.html

I find this not to be true. I can set Handles.zTest to CompareFunction.LessEqual and it's no different than if it is set to CompareFunction.Always. I've tried it on Handles.DrawLine, DrawBezier and DrawWireDisc. None of which respect the depth buffer.

I do not that if I set it to CompareFunction.Never, then it doesn't draw anything. So it seems like something is going on in there under the hood, just not what one expects.

Am I missing something or is this a bug?

 

Hello @nsxdavid,
I've also faced the same problem, did you find a solution?
Or maybe Unity Devs could help?

Code (CSharp):

1. Handles.zTest = UnityEngine.Rendering.CompareFunction.LessEqual;
2. if (Handles.Button(position, Quaternion.identity, handleSize, pickSize, Handles.SphereHandleCap)) {
3.     // ...
4. }

The highlighted sphere must be hidden, but it remains drawn on screen.


Editor version: 2022.1.0b14.2951
Render Pipeline: Built In Render Pipeline

And also handles are ignoring z depth of each other:

 

Looks like zTest is not working only in Built In Render Pipeline, because here what happens if I use URP.