Re: unpleasant flickering in terminal emacs

[Amos Bird <amosbird@gmail.com>]

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