---
title: MPSAlphaType.premultiplied
framework: metalperformanceshaders
role: symbol
role_heading: Case
path: metalperformanceshaders/mpsalphatype/premultiplied
---

# MPSAlphaType.premultiplied

The image is premultiplied by alpha.

## Declaration

```swift
case premultiplied
```

## Discussion

Discussion The image uses premultiplied alpha. Alpha is not guaranteed to be 1.

## See Also

### Constants

- [MPSAlphaType.nonPremultiplied](metalperformanceshaders/mpsalphatype/nonpremultiplied.md)
- [MPSAlphaType.alphaIsOne](metalperformanceshaders/mpsalphatype/alphaisone.md)