---
title: alphaBlendOperation
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlrenderpipelinecolorattachmentdescriptor/alphablendoperation
---

# alphaBlendOperation

The blend operation assigned for the alpha data.

## Declaration

```swift
var alphaBlendOperation: MTLBlendOperation { get set }
```

## Discussion

Discussion The default value is MTLBlendOperation.add.

## See Also

### Controlling blend operations

- [isBlendingEnabled](metal/mtlrenderpipelinecolorattachmentdescriptor/isblendingenabled.md)
- [rgbBlendOperation](metal/mtlrenderpipelinecolorattachmentdescriptor/rgbblendoperation.md)
- [MTLBlendOperation](metal/mtlblendoperation.md)