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Re: Change to NS drawing routines
From: |
Charles A. Roelli |
Subject: |
Re: Change to NS drawing routines |
Date: |
Sun, 12 Aug 2018 12:47:17 +0200 |
> Date: Sat, 11 Aug 2018 15:06:20 +0100
> From: Alan Third <address@hidden>
>
> The next version of macOS deprecates the method we use in the NS port
> to draw to the screen, specifically marking an NSView as ‘focused’ and
> then drawing to it. The ‘modern’ way is to only draw from within the
> ‘drawRect:’ method where ‘focusing’ is already done for you. There is
> some previous discussion here:
>
> https://lists.gnu.org/archive/html/emacs-devel/2018-07/msg00799.html
>
> I’ve created a new branch called scratch/ns-drawing which only draws
> from within drawRect by marking areas that are to be drawn as ‘dirty’
> and then, at the end of redisplay, forcing an update, which uses
> drawRect and expose_frame to redraw the relevant bits of the frame.
>
> I believe this is a somewhat controversial approach.
Why's that?
> My experience so far is that performance is not noticeably slower than
> master, however if someone with a slower Mac could try it that would
> be helpful.
I don't notice a speed difference compared to master on my slow box
running macOS 10.6. Do we have any benchmarks that we could use to
check?
Re: Change to NS drawing routines, Nick Helm, 2018/08/13
Re: Change to NS drawing routines, Van L, 2018/08/13