---
title: sourceRGBBlendFactor
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4renderpipelinecolorattachmentdescriptor/sourcergbblendfactor
---

# sourceRGBBlendFactor

Configures the source RGB blend factor.

## Declaration

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

## Discussion

Discussion This property defaults to MTLBlendFactorOne.