# `GSDrawStackFeature.GSDrawStackFeatureSubtractionMasks`

*Type Property*

Subtraction masks are not pre-applied to the slice.

## Declaration

```swift
static var subtractionMasks: GSDrawStackFeature { get }
```

```objc
GSDrawStackFeatureSubtractionMasks
```

```python
GSDrawStackFeatureSubtractionMasks
```

## Discussion

Supporting this feature requires handling masks in `GSDrawSlice.masks` with mask of type of `GSMaskTypeSubtract`.