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# vImage.ChannelOrdering

Constants that specify the channel ordering of a pixel buffer.

```
enum ChannelOrdering
```

## Topics

### Enumeration Cases

[`case ARGB`](/documentation/Accelerate/vImage/ChannelOrdering/ARGB)

The first channel is the alpha channel.

[`case RGBA`](/documentation/Accelerate/vImage/ChannelOrdering/RGBA)

The last channel is the alpha channel.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

---

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