Expose a user parameter

1. Create the input

1. Open the Niagara System. In User Parameters, click + and search for TUNS Baked Surface (GPU).
2. Name the parameter BakedSurface. Expand it and set Surface to your saved TUNS Surface Bake.

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1. 1
   Add a user parameter

   Click + and choose TUNS Baked Surface (GPU).

2. 2
   Expand BakedSurface

   Open the parameter to assign its Surface field.

3. 3
   SamplingData binding

   Choose User.BakedSurface.

1

1. 1
   Surface

   Choose the baked Data Asset, not the source mesh or mask texture.

2. Bind and reuse it

1. Select the TUNS sampling module. Open the binding menu beside SamplingData and select User.BakedSurface.
2. Compile and save. For a different actor using the same system, select its Niagara component and assign a compatible bake in its user-parameter overrides.

BakedSurface is your chosen name. The SamplingData binding must match it. The supplied examples already define this parameter.