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bug#42406: Mouse-wheel scrolling can be flickering
From: |
Eli Zaretskii |
Subject: |
bug#42406: Mouse-wheel scrolling can be flickering |
Date: |
Mon, 14 Dec 2020 22:54:33 +0200 |
> Date: Mon, 14 Dec 2020 20:25:30 +0000
> From: Alan Third <alan@idiocy.org>
> Cc: konrad.podczeck@univie.ac.at, 42406@debbugs.gnu.org
>
> > However, this bug report said that scrolling becomes slower and slower
> > with time, and that is not expected, and I see no direct relation
> > between that and flickering. Can we please go back to that aspect of
> > the problem? It shouldn't happen.
>
> I don't see any flickering. I only see the performance reduction when
> multiple frames are open.
If the performance hit is only a function of how many frames are
there, then this is expected. I thought the performance got worse
with time, but maybe I misunderstood.
> If we MUST redraw these when nothing on the frame is to be updated,
> then I don't see there's very much we can do.
The problem is, we don't know whether something's changed.
OTOH, continuous scrolling is not supposed to be a frequent use
pattern in Emacs.
> Perhaps I should get rid of the internal border code, it's new to the
> NS port in Emacs 28.
You could definitely make it optional, so that people who'd like
faster redisplay could decide whether they are okay with giving up the
internal border.
- bug#42406: Mouse-wheel scrolling can be flickering, (continued)
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, martin rudalics, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering, Konrad Podczeck, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering, Alan Third, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering,
Eli Zaretskii <=
- bug#42406: Mouse-wheel scrolling can be flickering, Alan Third, 2020/12/14
- bug#42406: Mouse-wheel scrolling can be flickering, martin rudalics, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, Alan Third, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, martin rudalics, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, Alan Third, 2020/12/15
- bug#42406: Mouse-wheel scrolling can be flickering, martin rudalics, 2020/12/16
- bug#42406: Mouse-wheel scrolling can be flickering, Alan Third, 2020/12/16
- bug#42406: Mouse-wheel scrolling can be flickering, Stefan Monnier, 2020/12/17
- bug#42406: Mouse-wheel scrolling can be flickering, Eli Zaretskii, 2020/12/17
- bug#42406: Mouse-wheel scrolling can be flickering, Stefan Monnier, 2020/12/17