Why doesn't my URP overlay camera render?

Overlay must be added to a Base camera's Stack list. Camera Render Type = Overlay (not Base). Without the stack reference, the overlay floats untracked and never renders.

What's a typical use?

Weapon viewmodel rendering with separate near plane to avoid clipping. Base camera renders world; Overlay renders weapon over without z-conflicts.

Each overlay adds a render pass. Keep stacks under 3 cameras for typical games. Camera Stack ordering is bottom-up: index 0 is Base; subsequent layered.

Fix: URP Camera Stack Overlay Not Rendering

Quick answer: Overlay camera Render Type = Overlay. Add to Base camera’s Stack list.

Weapon viewmodel camera doesn’t render. Base camera ignores it. Overlay must be explicitly stacked.

The Fix

BaseCamera (Camera component):
  Render Type:        Base
  Stack:
    + WeaponViewmodelCamera

WeaponViewmodelCamera:
  Render Type:        Overlay
  Culling Mask:       Weapon
  Clear Depth:        true

Stack drives layered rendering. Overlay’s output composites onto Base’s color target.

Verifying

Weapon visible without clipping into world. Frame Debugger shows overlay pass after Base.

“Stack the overlay. Composite layered.”

Related Issues

For URP feature order, see order. For Render Objects mask, see mask.

Stack on Base. Overlay renders.