Yes, macOS relies very heavily on CALayer to accomplish smooth scrolling, largely because much of the content of those layers is software-rendered. One thing th

Yes, macOS relies very heavily on CALayer to accomplish smooth scrolling, largely because much of the content of those layers is software-rendered. One thing that I find interesting is the subtle effect this has on the aesthetics of macOS (and iOS also) - lots of semitransparent planes sliding over each other and fading, very few other things that would be expensive in that model. I think this is a bad approach on modern hardware, for the reasons kllrnohj stated.