Why does my URP Render Objects feature draw nothing?

Layer Mask must include the actual layer of the target meshes. LightMode tag in the override material pass must match the feature's tags (UniversalForward by default). One mismatch and the renderer skips.

How do I check pass tags?

Open the override shader / Shader Graph → Inspector → Pass Tags. UniversalForward is the standard for URP. SRPDefaultUnlit or custom names need explicit Override Shader Tag in the feature.

Override Material vs Override Shader?

Material wholesale-replaces; useful for outline/x-ray. Shader keeps original material properties but swaps shader; cleaner for variant rendering.

Fix: URP Render Objects Feature Renders Nothing

Quick answer: Layer Mask = target layer. Override Pass Tag matches your shader pass (UniversalForward typical).

You add a Render Objects feature for an outline pass. Frame Debugger shows zero draws. Layer Mask was “Default” but enemies live on layer Enemy.

The Fix

URP Renderer Asset → Render Objects:
  Filters:
    Queue:                Opaque
    Layer Mask:           Enemy   // match target layer
    LightMode Tags:       UniversalForward
  Overrides:
    Material:             M_Outline (with UniversalForward pass)

Outline shader graph:
  Pass Tags:              LightMode = UniversalForward

Both filters must agree. Frame Debugger shows the feature's pass with non-zero draws after fix.

Verifying

Enable feature: outline draws. Disable: outline gone. Mismatched tag: empty pass.

“Layer right. Tag right. Pass renders.”

Related Issues

For URP feature order, see order. For URP decal on skinned, see URP decal.

Layer + tag. Pass draws.