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# MTLVertexBufferLayoutDescriptor

An object that configures how a render pipeline fetches data to send to the vertex function.

```
class MTLVertexBufferLayoutDescriptor
```

## Topics

### Organizing the vertex buffer layout

[`stepFunction`](/documentation/Metal/MTLVertexBufferLayoutDescriptor/stepFunction)

The circumstances under which the vertex and its attributes are presented to the vertex function.

[`stepRate`](/documentation/Metal/MTLVertexBufferLayoutDescriptor/stepRate)

The interval at which the vertex and its attributes are presented to the vertex function.

[`stride`](/documentation/Metal/MTLVertexBufferLayoutDescriptor/stride)

The number of bytes between the first byte of two consecutive vertices in a buffer.

[`MTLVertexStepFunction`](/documentation/Metal/MTLVertexStepFunction)

The frequency with which the vertex function or post-tessellation vertex function fetches attribute data.


---

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