# GetActiveTrailVertexStreams(List<ParticleSystemVertexStream>)

> Queries which trail Vertex Shader streams are enabled on the ParticleSystemRenderer.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public void GetActiveTrailVertexStreams(List<ParticleSystemVertexStream> streams)
```

### Parameters

**** (\[List\<ParticleSystemVertexStream>]\(https\://learn.microsoft.com/dotnet/api/system.collections.generic.list-1)): The array of streams to populate.

### Remarks

Additional Resources: [ParticleSystemRenderer.SetActiveTrailVertexStreams](/engine/6000.6/script-reference/unityengine/particlesystemrenderer/setactivetrailvertexstreams.md).