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# highQualityDownsample

A Boolean value to control the quality of image downsampling operations performed by the
Core Image context.

```
static let highQualityDownsample: CIContextOption
```

## Discussion

The higher quality behavior performs downsampling operations in multiple passes
in order to reduce aliasing artifacts.

The lower quality behavior performs downsampling operations a single pass
in order to improve performance.

If the value for this option is:

- True: The higher quality behavior will be used.
- False: The lower quality behavior will be used.
- Not specified: the default behavior is True on macOS and False on other platforms.

> Note:
> 
> - This option does affect how ``/CIImage/imageByApplyingTransform:`` operations are performed by the context.
> - This option does not affect how ``/CIImage/imageByApplyingTransform:highQualityDownsample:`` behaves.

---

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