drawable - CAMetalLayer nextDrawable delay with Core Animation operation

Question

I have a video player demo that render frame with 60fps. Player use custom UIView with CAMetalLayer back it, and video rendering run in background thread.

most time, player work fine. BUT, if some animation trigger, such as, 180 device rotation, even if home indicator hide/show, will cause render frame rate down to 40fps. nextDrawable blocked 1/30 sec, 1/60 sec, 1/30 sec, 1/60 sec , etc.

Anyone see this issue and figure out it?

Answer 1

等待大神答复