SubViewport, InputEvent Pressed and Area3D

[kevinloustau]

Godot version

v4.1.stable.official [9704596]

System information

Windows 11

Issue description

Hi,

After updating my project from godot 4.0.3 to 4.1, I noticed the SubViewport blocks the Input Events event pressed on my Area3D.

I made a small Godot project to test the issue with:

• two cubes rotating when we interact with their Area3D with the signal input_event.
• one is in front of the camera
• the other is from the SubViewport,

if the SubViewport is visible, only the content in the viewport receives the event pressed.
Important to note the mouse_entered signal works well.

I made a video to demonstrate the issue (the godot project is avalaible below):
https://drive.google.com/file/d/1gBgL_zsX0A8Y4mFQ0AwpIv0NDygISj_k/view?usp=sharing

Steps to reproduce

• Create a 3D scene, insert a mesh with an Area3D,
• Create a SubViewport and place another mesh using Area3D
• For the two Area3D, connect the signal input_event to a script, and get feedback on the InputEventMouseButton and event.pressed

Area3D code:

func _on_input_event(camera, event, position, normal, shape_idx):
	if event is InputEventMouseButton:
		if event.pressed:
			self.rotate(Vector3.UP,deg_to_rad(45));

func _on_mouse_entered():
	print("Mouse enter on: ", self.name)

Minimal reproduction project

SubViewportAndMouseArea.zip

[Sauermann]

I noticed the SubViewport blocks the Input Events event pressed

It would be more precise, that the SubViewportContainer blocks the Input Events. Control-Nodes always accept Mouse clicks, when their mouse-filter is set to PASS. So it is expected, that SubViewportContainer as a Control-Node does the same. This was a problem in the previous version, which lead to inconsistencies and got fixed in #57894.

What you want to achieve is no longer possible with SubViewportContainer but you can use Area2D instead.
Here is a demo-project to showcase one possible way, how this can be done: SubViewportAndMouseAreaWithChanges.zip

[kevinloustau]

Thank you @Sauermann for the explanations, I implemented what you showcase in the demo-project, and it is working perfectly!

[Sauermann]

I am glad to hear that. Closing this issue accordingly.