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

# sourceRGBBlendFactor

The source blend factor (SBF) used by the RGB blend operation.

## Declaration

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

## Discussion

Discussion The default value is MTLBlendFactor.one.

## See Also

### Configuring blend factors

- [destinationAlphaBlendFactor](metal/mtlrenderpipelinecolorattachmentdescriptor/destinationalphablendfactor.md)
- [destinationRGBBlendFactor](metal/mtlrenderpipelinecolorattachmentdescriptor/destinationrgbblendfactor.md)
- [sourceAlphaBlendFactor](metal/mtlrenderpipelinecolorattachmentdescriptor/sourcealphablendfactor.md)
- [MTLBlendFactor](metal/mtlblendfactor.md)