<!--
{
  "availability" : [
    "iOS: 26.0.0 -",
    "iPadOS: 26.0.0 -",
    "macCatalyst: 26.0.0 -",
    "macOS: 26.0.0 -",
    "tvOS: 26.0.0 -",
    "visionOS: 26.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "RealityKit",
  "identifier" : "/documentation/RealityKit/LowLevelInstanceData/init(instanceCount:)",
  "metadataVersion" : "0.1.0",
  "role" : "Initializer",
  "symbol" : {
    "kind" : "Initializer",
    "modules" : [
      "RealityKit"
    ],
    "preciseIdentifier" : "s:17RealityFoundation20LowLevelInstanceDataC13instanceCountACSi_tKcfc"
  },
  "title" : "init(instanceCount:)"
}
-->

# init(instanceCount:)

Creates a low-level instance data object with an instance count.

```
convenience init(instanceCount: Int) throws
```

## Parameters

`instanceCount`

The number of instances in this instance data object.

## Discussion

This initializer also applies the instance count to [`instanceCapacity`](/documentation/RealityKit/LowLevelInstanceData/instanceCapacity).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)