---
title: maxVertexAmplificationCount
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4meshrenderpipelinedescriptor/maxvertexamplificationcount
---

# maxVertexAmplificationCount

Determines the maximum value that can you can pass as the pipeline’s amplification count.

## Declaration

```swift
var maxVertexAmplificationCount: Int { get set }
```

## Discussion

Discussion This property controls the maximum count you pass to setVertexAmplificationCount:viewMappings: when using vertex amplification with this pipeline.