---
title: red
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtltextureswizzlechannels/red
---

# red

The data copied to the first output channel.

## Declaration

```swift
var red: MTLTextureSwizzle
```

## See Also

### Specifying swizzle values

- [green](metal/mtltextureswizzlechannels/green.md)
- [blue](metal/mtltextureswizzlechannels/blue.md)
- [alpha](metal/mtltextureswizzlechannels/alpha.md)