# cullMeshInstances(_:indices:configuration:) Culls mesh instances against a frustum and returns the surviving indices. ``` static func cullMeshInstances(_ meshInstances: LowLevelMeshInstanceArray, indices: Span, configuration: LowLevelRenderer.CullConfiguration) -> [Int] ``` ## Parameters `meshInstances` The mesh instance array to test. `indices` The candidate indices to test. `configuration` The cull configuration supplying the frustum planes. ## Return Value The indices of instances that are not culled, in input order. ## Discussion A convenience overload that allocates and returns the surviving indices as an array. --- 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)