Re: macOS metal rendering engine in mac port

[Aaron Jensen]

On Sun, May 30, 2021 at 2:36 AM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Aaron Jensen <aaronjensen@gmail.com>
> > Date: Sun, 30 May 2021 00:04:43 -0700
> > Cc: Alan Third <alan@idiocy.org>, emacs-devel@gnu.org
> >
> > If I run the test on line 499 of xdisp.c I get:
> >
> > Native, hash, no line numbers: 3756ms
> > Native, hash, line numbers: 4185ms
> >
> > Native, alist, no line numbers: 4810ms
> > Native, alist, line numbers: 7173ms
>
> In an unoptimized build, "emacs -Q", without native-compilation, I get
> 26.39 and 27.22 sec, respectively.

My emacs -Q is 6s and 6.32s, respectively.

> > It's not my faces though, it's my header line that's causing that many
> > calls, possibly because it's triggering a redraw because the column
> > changed? I'm not sure how mode/header lines work when they update.
>
> You have the column displayed on your header-line?

Yes, I do, though maybe that's a bad idea. Does that cause a full
redisplay when typing rather than just updating the individual line?