---
title: CGImageAlphaInfo.premultipliedFirst
framework: coregraphics
role: symbol
role_heading: Case
path: coregraphics/cgimagealphainfo/premultipliedfirst
---

# CGImageAlphaInfo.premultipliedFirst

The alpha component is stored in the most significant bits of each pixel and the color components have already been multiplied by this alpha value. For example, premultiplied ARGB.

## Declaration

```swift
case premultipliedFirst
```

## See Also

### Constants

- [CGImageAlphaInfo.first](coregraphics/cgimagealphainfo/first.md)
- [CGImageAlphaInfo.last](coregraphics/cgimagealphainfo/last.md)
- [CGImageAlphaInfo.none](coregraphics/cgimagealphainfo/none.md)
- [CGImageAlphaInfo.noneSkipFirst](coregraphics/cgimagealphainfo/noneskipfirst.md)
- [CGImageAlphaInfo.alphaOnly](coregraphics/cgimagealphainfo/alphaonly.md)
- [CGImageAlphaInfo.noneSkipLast](coregraphics/cgimagealphainfo/noneskiplast.md)
- [CGImageAlphaInfo.premultipliedLast](coregraphics/cgimagealphainfo/premultipliedlast.md)