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# MTLAccelerationStructureBoundingBoxGeometryDescriptor

A description of a list of bounding boxes to turn into an acceleration structure.

```
class MTLAccelerationStructureBoundingBoxGeometryDescriptor
```

## Topics

### Creating a bounding box geometry descriptor

[`descriptor`](/documentation/Metal/MTLAccelerationStructureBoundingBoxGeometryDescriptor/descriptor)

Creates a new bounding box descriptor.

### Specifying the number of bounding boxes

[`boundingBoxCount`](/documentation/Metal/MTLAccelerationStructureBoundingBoxGeometryDescriptor/boundingBoxCount)

The number of bounding boxes in the bounding box buffer.

### Specifying bounding boxes data

[`boundingBoxBuffer`](/documentation/Metal/MTLAccelerationStructureBoundingBoxGeometryDescriptor/boundingBoxBuffer)

A buffer that contains an array of bounding box structures.

[`boundingBoxBufferOffset`](/documentation/Metal/MTLAccelerationStructureBoundingBoxGeometryDescriptor/boundingBoxBufferOffset)

The offset, in bytes, to the first bounding box in the buffer.

[`boundingBoxStride`](/documentation/Metal/MTLAccelerationStructureBoundingBoxGeometryDescriptor/boundingBoxStride)

The stride, in bytes, between bounding boxes in the buffer.


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