Re: Emacs NS 'scratch/ns/draw-to-bitmap' branch performance

[Daniel Pittman <slippycheeze@google.com>]

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On Wed, Feb 5, 2020 at 6:10 PM Alan Third <alan@idiocy.org> wrote:

> On Wed, Feb 05, 2020 at 11:00:05AM -0500, Daniel Pittman wrote:
> > After building Emacs with the ns/draw-to-bitmap branch merged, on macOS
> > 10.15.2, I'm seeing some performance issues.  I'd like, Alan, to know how
> > you would prefer me to proceed in a way that best helps you (and anyone
> > else here) resolve them.
> Honestly, though, I’d be happy for you to have a look as we’re rather
> struggling. Using the offscreen bitmap means Emacs doesn’t have any
> odd graphical glitches. The other method, described here
>
>     https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32932#412
>
> does have serious glitches but has *much* better performance.


OK.  I'll see about spending some time in the area, see if I can't improve
performance for me and hopefully everyone else.  Thanks for the pointers
and patches, which I'll play around with, and see what comes of testing
them, and additional profiling.

I can't promise a strict timeline, as this is a personal time project, but
I'm definitely motivated to improve performance here.  I'll keep in touch
via the list on progress.  Thank you for your quick response.

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