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# setIntersectionFunctionTable(_:index:)

Encodes a reference to a ray-tracing intersection-function table into the argument buffer.

```
func setIntersectionFunctionTable(_ intersectionFunctionTable: (any MTLIntersectionFunctionTable)?, index: Int)
```

## Parameters

`intersectionFunctionTable`

An intersection-function table the method encodes.

`index`

An index of an intersection-function table within the argument buffer.
The value corresponds to either the index ID of a declaration in
Metal Shading Language (MSL) or the [`index`](/documentation/Metal/MTLArgumentDescriptor/index) property of
an [`MTLArgumentDescriptor`](/documentation/Metal/MTLArgumentDescriptor) instance.

## Discussion

---

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