The number of mipmap levels contained in the texture image data.
- iOS 9.0+
- macOS 10.11+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- Model I/O
Mipmapping is a technique that uses multiple sizes of a texture image to increase rendering performance. If this property’s value is zero, the texture contains a single image, whose size matches the
dimensions property. If this value is 1, the texture contains an additional image at half the original dimensions; if this value is 2, the texture contains images at the original size, at half size, and at quarter size; and so on.