Re: unpleasant flickering in terminal emacs

[Amos Bird]

Thanks. But it's emacs in the terminal which flickers, not in the 
GUI. I'm not
sure if the double buffering mechanism has anything to do with 
terminals.

regards,

Tim Visher <tim.visher@gmail.com> writes:

> I don't have an informed idea about whether you're suffering 
> from this (I
> never have) but your question tickled my memory.
>
> https://www.facebook.com/notes/daniel-colascione/buttery-smooth-emacs/10155313440066102/
>
> On Fri, Apr 27, 2018 at 7:58 AM, Amos Bird <amosbird@gmail.com> 
> wrote:
>
> > Hi,
> >
> > I'm using emacs master branch in terminal (alacritty). When 
> > moving
> > cursor with relative line number enabled or scrolling up/down, 
> > I get
> > unpleasant screen flickering. However, frame switch works fine, 
> > which
> > I suppose uses full rendering updates. It seems partial 
> > rendering
> > update doesn't work well. The author of alacritty mentioned one
> > possible cause : "flickering is typically caused by a program 
> > not
> > writing full updates to the pty. We drain all available bytes 
> > up to
> > like 64k before yielding for a render. It may be that we should 
> > add
> > some heuristic around time to prevent flickering from poorly 
> > behaved
> > terminal applications." So my question is, can I enable full 
> > updates
> > for every redisplay? Thanks!
> >
> > Here is a screencast of flickering.
> >
> > https://youtu.be/wv4QINKHDUY
> >
> > regards,
> >
> > --
> > Amos Bird
> > amosbird@gmail.com


--
Amos Bird
amosbird@gmail.com