# aabbBuffer

> The GraphicsBuffer that defines a list of axis-aligned bounding boxes (AABBs).

## Definition

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

```csharp
public GraphicsBuffer aabbBuffer { readonly get; set; }
```

### Remarks

Every element in the buffer starts with the minimum and maximum corners of one AABB, as six float values in the following order: minX, minY, minZ, maxX, maxY, maxZ.

The buffer stride must be at least 24 bytes and a multiple of 8 bytes. Use a stride larger than 24 bytes to store additional data after the minimum and maximum corners, for example a color for each AABB. Unity ignores this additional data when it builds the acceleration structure. To use the data, bind the buffer to a shader. To index the buffer, add [RayTracingAABBsInstanceConfig.aabbOffset](/engine/6000.7/script-reference/unityengine/rendering/raytracingaabbsinstanceconfig/aabboffset.md) to the AABB index.