GNU bug report logs - #42406
Mouse-wheel scrolling can be flickering

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From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: alan <at> idiocy.org, konrad.podczeck <at> univie.ac.at, 42406 <at> debbugs.gnu.org
Subject: bug#42406: Mouse-wheel scrolling can be flickering
Date: Thu, 17 Dec 2020 16:13:37 +0100

> set-window-start is how Lisp programs tell the display engine to
> scroll the display.  So if we agree that scrolling should trigger
> update of the frame's elements other than the selected window,

Personally I don't agree but happily leave this decision to others.

> then
> these calls to wset_update_mode_line are necessary and cannot be
> removed.
>
> As I said previously, patches are welcome to make the decision of what
> exactly needs to be redrawn more fine-grained than the current "either
> just the selected window or all the windows on all the frames" method.

We talk here about a workaround Konrad would use in his personal builds
to avoid that scrolling a window slows down his system until something
better is available.  Or what would you do in his place?

martin

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