Is it possible to have multiple PhysicsRaycasters on a Camera for different layers?

I'm trying to have events working on triggers with colliders in different layers, which are overlapping each other from camera.

What I tried:
* Attach 2 PhysicsRaycasters on a Camera
* One uses UI mask
* Another uses MyOwnMask mask
I have 2 plane colliders in the world, one is for panning camera, in UI mask; another is for placing buildings, in MyOwnMask mask. They are geometrically the same plane, but may or may not be enabled at the same time.

The problem I have is when they are both enabled, I can't get events triggered for both of them correctly. I.e. only one of them randomly got triggered.

I guess the PhysicsRaycasters summarize the raycast hit results and pick only the closest one.
Are there currently anyway to trigger events on overlapping objects?

Thanks!

 

EDIT: Ignore this post, I obviously messed up culling mask with physics

Have you tried using two camera for that maybe? If camera's Culling Mask is set to single layer only (like MyOwnMask) it wont be obstructed by anything else.

 

Thanks Andrew for taking time. Not sure if I misunderstand your meaning, but I think Culling Mask only affects rendering. Raycasts are in the collider world.

What I ended up doing right now as a (hopefully temporary) solution was to remove the camera panning plane, and put that in a TouchInputManager, managed with Input class. So that the building placing plane could be freely used for events. (Use one PhysicsRaycaster)

Another possible solution I come up with is to discard PhysicsRaycaster, but use Physics.Raycast in conjunction with GraphicsRaycaster to fine tune which layer to interact with, and connect those with home brew events. (Use no PhysicsRaycaster)

But since EventSystem has much potential and is easy to configure, I prefer using them as much as possible.