# aabbOffset

> The index of the first AABB Unity uses from RayTracingAABBsInstanceConfig.aabbBuffer.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Rendering](/engine/6000.0/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public uint aabbOffset { readonly get; set; }
```