# aabbOffset

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

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Rendering](/engine/6000.7/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

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

### Remarks

This value counts AABB entries in the buffer, not bytes, so you don't need to change it if you change the [stride](/engine/6000.7/script-reference/unityengine/graphicsbuffer/stride.md) of [RayTracingAABBsInstanceConfig.aabbBuffer](/engine/6000.7/script-reference/unityengine/rendering/raytracingaabbsinstanceconfig/aabbbuffer.md).