# AccelerateMatrixBuffer Implementations ## Topics ### Instance Methods [`func withUnsafeBufferPointer((UnsafeBufferPointer) throws -> R) rethrows -> R`](/documentation/Accelerate/vImage/PixelBuffer/withUnsafeBufferPointer(_:)) Calls the given closure with a pointer to the buffer’s contiguous storage. --- 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)