---
title: SCNParticleBlendMode.alpha
framework: scenekit
role: symbol
role_heading: Case
path: scenekit/scnparticleblendmode/alpha
---

# SCNParticleBlendMode.alpha

The source and destination colors are blended by multiplying the source alpha value.

## Declaration

```swift
case alpha
```

## See Also

### Constants

- [SCNParticleBlendMode.additive](scenekit/scnparticleblendmode/additive.md)
- [SCNParticleBlendMode.subtract](scenekit/scnparticleblendmode/subtract.md)
- [SCNParticleBlendMode.multiply](scenekit/scnparticleblendmode/multiply.md)
- [SCNParticleBlendMode.screen](scenekit/scnparticleblendmode/screen.md)
- [SCNParticleBlendMode.replace](scenekit/scnparticleblendmode/replace.md)