GNU bug report logs - #32932
27.0.50; render bugs on macOS Mojave

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Message #276 received at 32932 <at> debbugs.gnu.org (full text, mbox):

From: Alan Third <alan <at> idiocy.org>
To: Robert Pluim <rpluim <at> gmail.com>
Cc: 32932 <at> debbugs.gnu.org
Subject: Re: bug#32932: 27.0.50; render bugs on macOS Mojave
Date: Tue, 12 Nov 2019 14:38:04 +0000

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On Tue, 12 Nov 2019, 13:28 Robert Pluim, <rpluim <at> gmail.com> wrote:

> >>>>> On Mon, 11 Nov 2019 18:16:22 +0000, Alan Third <alan <at> idiocy.org>
> said:
>     Alan> The main bit of the code is around the method
>     Alan> createDrawingBufferWithRect in nsterm.m. It’s a simple bitmap
> and it’s
>     Alan> very slow to draw to the screen (drawRect:). I think that there
> are
>     Alan> things that can be done with layers and CGLayers, but I never
> managed
>     Alan> to work out how it’s supposed to work, or if it’s even
> plausible. I
>     Alan> don’t know if AppKit can draw directly to CGLayers.
>
> Question #1: How do you know itʼs slow? Iʼve been using it since this
> morning, and it seems ok.
>

A couple of people tried it and found it slow. I run a fairly vanilla Emacs
and it looked ok to me, but if I full maximised it on my retina mac it was
visibly slower at things like scrolling than the current master branch.

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