Summary:
Apple suggested to this new API on iOS 10+.
> // Any new bitmap drawing code is encouraged to use UIGraphicsImageRenderer in lieu of this API.
WWDC18 Reference: https://developer.apple.com/videos/play/wwdc2018/219/
> Use UIGraphicsImageRenderer to create and draw to an image buffer
Supports Wide Color, unlike UIGraphicsBeginImageContext()
Combine with UIImageView for efficient offscreen rendering
Per https://nshipster.com/image-resizing/#performance-benchmarks, the new API runs even faster than the C version, probably due to more smart context reuses/management.
Changelog:
[iOS][Changed] - Adopt UIGraphicsImageRenderer API
Reviewed By: philIip
Differential Revision: D35699584
fbshipit-source-id: 7a1e2109d5e121fb396c1014f4ed0a892211b0cc
d70d7fd0b3