# sortMeshInstances(_:indices:configuration:) Sorts the given mesh instances by sort category and, for transparent instances, by back-to-front distance from the camera. ``` static func sortMeshInstances(_ meshInstances: LowLevelMeshInstanceArray, indices: inout MutableSpan, configuration: LowLevelRenderer.SortConfiguration) ``` ## Parameters `meshInstances` The mesh instance array whose elements to sort. `indices` The index span to sort in place. `configuration` The sort configuration supplying the camera position. ## Discussion Call this before `render(using:_:)` to produce a draw order for the callback. Opaque instances sort before transparent ones; within transparent instances, farther instances sort before nearer ones. --- Copyright © 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)