---
title: destinationAlphaBlendFactor
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4renderpipelinecolorattachmentdescriptor/destinationalphablendfactor
---

# destinationAlphaBlendFactor

Configures the destination-alpha blend factor.

## Declaration

```swift
var destinationAlphaBlendFactor: MTLBlendFactor { get set }
```

## Discussion

Discussion This property defaults to MTLBlendFactorZero.