Re: master 1555453694: Implement `alpha-background' on non-Cairo builds

[Po Lu]

Jose A Ortega Ruiz <jao@gnu.org> writes:

> (what is it supposed to happen with --with-x-toolkit=no then?)

It should work there, since Emacs is the only program talking to X,
without libraries such as Xt interfering.

> 24.

That means it is disabled correctly.  `alpha-background' requires a
visual with an alpha channel, which on modern X servers is typically
32-bit.

> nonetheless, after your update yesterday to apply a mask to images, and
> a recompilation, alpha-background stopped working at all both in lucid
> and no toolkit, which i guess is what you expect, even with a compositor
> like compton.  if that's so, all is well.  i am actually happy with
> alpha for my use cases (alpha-background is working well in wayland
> with a pgtk build, when i'm not in x11).

That's nice to see, thanks.