Layer

The Layer property of the Node is an unsigned 32-bit integer, supporting up to 32 different types of Layer, which can be set in Project -> Project Settings -> Layers in the menu bar above the editor. The developer can customize the Layer 0 ~ 19, and the remaining 12 Layers are the engine's built-in ones.

The Visibility property of the Camera and the Layer property of the Node are both used to control the visibility of nodes. However, a node can only be seen by the camera if the Layer property set in the node is included in the Visibility of the camera. The Visibility property of the camera uses bitwise operators (such as | and &) to determine whether a node's Layer should be visible, and supports selecting multiple Layers at the same time. See the Camera — Set the Visibility property documentation for details.

The engine's built-in Layers

Property	Description	Property Value
NONE	Set all invisible	0
IGNORE_RAYCAST	Setting to ignore ray detection	1 << 20
GIZMOS	Set gizmo information visible	1 << 21
EDITOR	Set editor visible	1 << 22
UI_3D	Set the 3D UI node to be visible	1 << 23
SCENE_GIZMO	Set scene gizmo visible	1 << 24
UI_2D	Set 2D UI nodes visible	1 << 25
PROFILER	Set the profiler node to be visible	1 << 28
DEFAULT	Set the default node to be visible	1 << 30
ALL	Set all nodes to be visible	0xffffffff

User-defined Layers