---
title: vImage.CompositeMode.nonpremultipliedToPremultiplied
framework: accelerate
role: symbol
role_heading: Case
path: accelerate/vimage/compositemode/nonpremultipliedtopremultiplied
---

# vImage.CompositeMode.nonpremultipliedToPremultiplied

Blends a nonpremultiplied top image into a premultiplied bottom image and returns a premultiplied result.

## Declaration

```swift
case nonpremultipliedToPremultiplied
```

## See Also

### Enumeration Cases

- [vImage.CompositeMode.nonpremultiplied](accelerate/vimage/compositemode/nonpremultiplied.md)
- [vImage.CompositeMode.premultiplied](accelerate/vimage/compositemode/premultiplied.md)
- [vImage.CompositeMode.premultipliedWithConstantAlpha(_:)](accelerate/vimage/compositemode/premultipliedwithconstantalpha(_:).md)