---
title: MTLMutability.immutable
framework: metal
role: symbol
role_heading: Case
path: metal/mtlmutability/immutable
---

# MTLMutability.immutable

An option that states that you can’t modify the buffer’s contents.

## Declaration

```swift
case immutable
```

## Mentioned in

Improving CPU performance by using argument buffers

## See Also

### Enumeration cases

- [MTLMutability.default](metal/mtlmutability/default.md)
- [MTLMutability.mutable](metal/mtlmutability/mutable.md)