---
title: MTLBlendFactor.unspecialized
framework: metal
role: symbol
role_heading: Case
path: metal/mtlblendfactor/unspecialized
---

# MTLBlendFactor.unspecialized

Defers assigning the blend factor.

## Declaration

```swift
case unspecialized
```

## Discussion

Discussion Until you specialize this value in the pipeline state, it: behaves as MTLBlendFactorOne for sourceRGBBlendFactor and sourceAlphaBlendFactor behaves as MTLBlendFactorZero for destinationRGBBlendFactor and destinationAlphaBlendFactor