Re: Scrolling commands and skipping redisplay, was: Re: emacs rendering comparisson between emacs23 and emacs26.3

[Eli Zaretskii]

> Cc: address@hidden, address@hidden, address@hidden,
>  address@hidden, address@hidden, address@hidden
> From: Dmitry Gutov <address@hidden>
> Date: Fri, 10 Apr 2020 15:38:05 +0300
> 
> But I'm comparing fast-but-imprecise-scrolling with jit-lock-defer-time 
> set to 0, which is supposed to be its direct counterpart. And the latter 
> adds flickering.
> 
> Higher values add flickering too, even more noticeably. But that seems 
> unavoidable.

It doesn't flicker here.  Maybe the double-buffering is the reason?

With -Og, if you set jit-lock-defer-time to 0.5, doesn't it scroll
much faster? does it flicker then?