Support `CursorRayPlugin` choose the camera

[attila-lin]

I found if I have two cameras(One for 3D scene, one for 2D UI), the CursorRayPlugin will work fail.

I can't find the solution for this situation.

May add a component to disallow the camera.

[thmxv]

Hi,

The correct solution would be to use the deferred API and mark which camera you want to use with the RaycastSource component.

Another, very bad, way to work around the issue would be to change the order the cameras are added to the world. Add the camera you want to use first. But this is very unreliable.