---
title: rasterizationRateMap
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelrenderer/output-swift.struct/rasterizationratemap
---

# rasterizationRateMap

The rasterization rate map to use when rendering.

## Declaration

```swift
var rasterizationRateMap: (any MTLRasterizationRateMap)? { get set }
```

## Discussion

Discussion Corresponds to MTLRenderPassDescriptor.rasterizationRateMap.

## See Also

### Setting the viewport

- [viewports](realitykit/lowlevelrenderer/output-swift.struct/viewports.md)
- [scissorRects](realitykit/lowlevelrenderer/output-swift.struct/scissorrects.md)