Why doesn't my SubGraph property show up on the parent graph?

Properties on the SubGraph's Blackboard must be checked Exposed. Otherwise they're internal-only. Save the SubGraph, then in the parent right-click the SubGraph node and Update From SubGraph.

Differences between Property and Keyword?

Properties (float/color/texture) propagate to material inspector. Keywords toggle shader variants and need separate exposure on the parent. Both must be Exposed in their SubGraph.

Sometimes the parent caches the SubGraph signature. Reimport the SubGraph asset (right-click → Reimport) and reopen the parent.

Fix: Shader Graph SubGraph Property Not Exposed

Quick answer: SubGraph Blackboard → property → tick Exposed. Save SubGraph. In parent: right-click SubGraph node → Update From SubGraph.

Authored an emissive subgraph with a Color property. Used in 5 materials. Color slot doesn’t appear on any. The property wasn’t marked Exposed.

The Fix

SubGraph (EmissivePulse.shadersubgraph):
  Blackboard:
    Color "_Color":
      Exposed:    true
      Reference:  _PulseColor
  Save (Ctrl+S)

Parent shader graph:
  Right-click SubGraph node → Update From SubGraph
  _Color now appears as material property

Material inspector shows the property after the Update step. Save again at parent level.

Verifying

Open material using parent shader. _Color slot visible. Change value: previews update.

“Exposed in SubGraph. Update parent. Material sees.”

Related Issues

For Shader Graph keyword type, see keyword type. For Shader Graph custom function, see custom function.

Exposed flag. Update propagates.