The size (in pixels) of your tile images.
- iOS 7.0+
- macOS 10.9+
- tvOS 9.2+
On Retina displays, the images are rendered pixel for pixel and are not scaled. This means that if the tile size is 256 x 256 pixels and the scale factor is
2, the image would be rendered as if it were 128 x 128 points in size. This behavior causes the tile to appear smaller but preserves the original image data.
The default tile size is set to 256 x 256 pixels.