Camera Rendering Control

• Include layers: Camera.cullingMask = LayerMask.GetMask("Default", "UI")
• Exclude layers: Camera.cullingMask &= LayerMask.GetMask("UI")
• Combine multiple layers with commas in GetMask()
• Note: Culling affects rendering only, not physics!

Advanced Layer Queries

• Create layer masks: LayerMask.GetMask() or (1 << layerNumber)
• Find objects by layer: Physics.OverlapSphere(position, radius, layerMask)
• Filter results with layerMask parameter
• Use OverlapSphereNonAlloc() to prevent garbage collection

Pro Tips:

• Tags for identification, layers for interaction/rendering rules
• Cache results from Find methods in Awake()/Start()
• Set IgnoreLayerCollision at startup, not every frame
• Define layer constants in a static class for consistency