---
title: MTLReadWriteTextureTier.tier1
framework: metal
role: symbol
role_heading: Case
path: metal/mtlreadwritetexturetier/tier1
---

# MTLReadWriteTextureTier.tier1

Indicates the system supports tier 1 read-write textures.

## Declaration

```swift
case tier1
```

## Discussion

Discussion Tier 1 read-write textures support the following pixel formats: MTLPixelFormat.r32Float MTLPixelFormat.r32Uint MTLPixelFormat.r32Sint

## See Also

### Enumeration cases

- [MTLReadWriteTextureTier.tier2](metal/mtlreadwritetexturetier/tier2.md)
- [MTLReadWriteTextureTier.tierNone](metal/mtlreadwritetexturetier/tiernone.md)