---
title: screenSize
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlrasterizationratemap/screensize
---

# screenSize

The logical size, in pixels, of the viewport coordinate system.

## Declaration

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

## Mentioned in

Rendering with a rasterization rate map

## See Also

### Inspecting geometric and rendering properties

- [layerCount](metal/mtlrasterizationratemap/layercount.md)
- [physicalSize(layer:)](metal/mtlrasterizationratemap/physicalsize(layer:).md)
- [physicalGranularity](metal/mtlrasterizationratemap/physicalgranularity.md)