# encodedLength The number of bytes required to store the encoded resources of an argument buffer. ``` var encodedLength: Int { get } ``` ## Discussion After creating an [`MTLArgumentEncoder`](/documentation/Metal/MTLArgumentEncoder) instance, use this value to create the [`MTLBuffer`](/documentation/Metal/MTLBuffer) instance that represents an argument buffer. ```swift id encoder = [_function newArgumentEncoderWithBufferIndex:0]; id buffer = [_device newBufferWithLength:encoder.encodedLength options:_options]; [encoder setArgumentBuffer:buffer offset:0]; ``` --- 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)