---
title: "init(sourceAtlasReference:)"
framework: realitykit
role: symbol
role_heading: Initializer
path: "realitykit/lightmapresource/indirectdiffuseirradiancebakedescriptor/init(sourceatlasreference:)"
---

# init(sourceAtlasReference:)

## Declaration

```swift
init(sourceAtlasReference: LightmapResource.AtlasReference)
```