---
title: "init(perPartData:)"
framework: realitykit
role: symbol
role_heading: Initializer
path: "realitykit/lightmapresource/entitylightmapdescriptor/init(perpartdata:)"
---

# init(perPartData:)

## Declaration

```swift
init(perPartData: [LightmapResource.MeshPartLightmapDescriptor]) throws
```