---
title: maxSampleCount
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlrasterizationratelayerdescriptor/maxsamplecount
---

# maxSampleCount

The maximum number of rows and columns in the layer map.

## Declaration

```swift
var maxSampleCount: MTLSize { get }
```

## Discussion

Discussion Its depth value is always 0.

## See Also

### Inspecting the layer rate function parameters

- [sampleCount](metal/mtlrasterizationratelayerdescriptor/samplecount.md)
- [horizontal](metal/mtlrasterizationratelayerdescriptor/horizontal.md)
- [vertical](metal/mtlrasterizationratelayerdescriptor/vertical.md)
- [MTLRasterizationRateSampleArray](metal/mtlrasterizationratesamplearray.md)