Bug: UI's "raycast target" property ignored.

Hi,

while working with the XR Interaction Toolkit, I encountered the following behaviour:
UI elements, that have their "raycast target" property disabled, still get detected by the TrackedDeviceGraphicRaycaster. This results in UI elements catching rays even if they shouldn't.

This bug has already been reported:
Issue ID: 1221300
Link: https://issuetracker.unity3d.com/is...react-to-ui-when-raycast-target-is-turned-off

Specs:
Unity 2019.3.5f1
XRI Toolkit 0.9.3

Can we expect the bug to be fixed soon, i.e. in the next package update?


Cheers

 

I'm using this workaround for now:

In TrackedDeviceGraphicRaycaster.cs, I added a check for the "raycast target" property to the SortedRaycastGraphics method (see line 7).

Code (CSharp):

1. private void SortedRaycastGraphics(Canvas canvas, Ray ray, float maxDistance, LayerMask layerMask, List<RaycastHitData> results){
2.     var graphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
3.     s_SortedGraphics.Clear();
4.     for (int i = 0; i < graphics.Count; ++i){
5.         Graphic graphic = graphics[i];
6.        
7.         if (!graphic.raycastTarget) continue;
8. ...

Looking forward to the proper fix


Cheers

 

... and don't forget to embed the XRI Toolkit package. Otherwise your changes will get overriden every time you restart Unity.

• About embedding in general: https://docs.unity3d.com/Manual/upm-embed.html
• Embedding can also be done by script: https://docs.unity3d.com/Manual/upm-api.html#Embed

Cheers.

 

I've just found this is also a bug in the new Input System (v1.3.0) TrackedDeviceRaycaster component. Is this just an oversight?