---
title: oldestFirst
framework: quartzcore
role: symbol
role_heading: Type Property
path: quartzcore/caemitterlayerrendermode/oldestfirst
---

# oldestFirst

Particles are rendered oldest first. This mode uses source-over compositing.

## Declaration

```swift
static let oldestFirst: CAEmitterLayerRenderMode
```

## See Also

### Constants

- [unordered](quartzcore/caemitterlayerrendermode/unordered.md)
- [oldestLast](quartzcore/caemitterlayerrendermode/oldestlast.md)
- [backToFront](quartzcore/caemitterlayerrendermode/backtofront.md)
- [additive](quartzcore/caemitterlayerrendermode/additive.md)