---
title: "emitter::burst"
framework: Compute Graph
role: symbol
role_heading: Function
platforms: [iOS 27.0+, iPadOS 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/emitter/burst
---

# emitter::burst

Emit a single burst of particles when the system spawns.

## Declaration

```swift
void emitter::burst(uint burstSize)
```

## Parameters

- `burstSize`: Number of particles to emit at system creation or reset.

## Discussion

Discussion note: