Handles.DotHandleCap ztest issue

If you set "Handles.zTest = CompareFunction.Less" this has no effect on "Handles.DotHandleCap" it only works with "Handles.DotCap" but this function is obsolete.
So how can I solve this or is this a bug in Unity?


My test code:

Code (CSharp):

1.  [CustomEditor(typeof(MyTestCode))]
2. public class DotHandleTestEditor : Editor
3. {
4.      protected virtual void OnSceneGUI()
5.      {
6.          Handles.zTest = CompareFunction.Less;
7.  
8.          Quaternion lookAtRot = Quaternion.LookRotation(Camera.current.transform.position);
9.          float size = HandleUtility.GetHandleSize(Vector3.zero);
10.          if (Handles.Button(Vector3.zero, lookAtRot, size * 0.05f, size * 0.07f, Handles.DotCap))
11.              Debug.Log("zTest works fine on this one");
12.          lookAtRot = Quaternion.LookRotation(new Vector3(20, 0, 0) - Camera.current.transform.position);
13.          if (Handles.Button(new Vector3(1,0,0), lookAtRot, size * 0.05f, size * 0.07f, Handles.DotHandleCap))
14.              Debug.Log("zTest is not working on this one");
15.      }
16. }

 

Okey I dit some more research and I looked in de source code and I found this.

Code (CSharp):

1. //Unity 2018.1
2. public sealed class Handles
3. ...
4.  
5. [Obsolete("Use DotHandleCap instead")]
6. public static void DotCap(int controlID, Vector3 position, Quaternion rotation, float size)
7. {
8.     if (Event.current.type == EventType.Repaint)
9.     {
10.         position = Handles.matrix.MultiplyPoint(position);
11.         Vector3 b = Camera.current.transform.right * size;
12.         Vector3 b2 = Camera.current.transform.up * size;
13.         Color c = Handles.color * new Color(1f, 1f, 1f, 0.99f);
14.         HandleUtility.ApplyWireMaterial(Handles.zTest);
15.         GL.Begin(7);
16.         GL.Color(c);
17.         GL.Vertex(position + b + b2);
18.         GL.Vertex(position + b - b2);
19.         GL.Vertex(position - b - b2);
20.         GL.Vertex(position - b + b2);
21.         GL.End();
22.     }
23. }
24.  
25. public static void DotHandleCap(int controlID, Vector3 position, Quaternion rotation, float size, EventType eventType)
26. {
27.     if (eventType != EventType.Layout)
28.     {
29.         if (eventType == EventType.Repaint)
30.         {
31.             position = Handles.matrix.MultiplyPoint(position);
32.             Vector3 b = Camera.current.transform.right * size;
33.             Vector3 b2 = Camera.current.transform.up * size;
34.             Color c = Handles.color * new Color(1f, 1f, 1f, 0.99f);
35.             HandleUtility.ApplyWireMaterial();
36.             GL.Begin(7);
37.             GL.Color(c);
38.             GL.Vertex(position + b + b2);
39.             GL.Vertex(position + b - b2);
40.             GL.Vertex(position - b - b2);
41.             GL.Vertex(position - b + b2);
42.             GL.End();
43.         }
44.     }
45.     else
46.     {
47.         HandleUtility.AddControl(controlID, HandleUtility.DistanceToRectangle(position, rotation, size));
48.     }
49. }

As you can see DotCap uses the zTest

Code (CSharp):

1. HandleUtility.ApplyWireMaterial(Handles.zTest);

And DotHandleCap does not use the zTest

Code (CSharp):

1. HandleUtility.ApplyWireMaterial();

So I think the Unity team forgot to put it in there.