Bug#1078210: src:gtk4: Please enable vulkan backend

[Simon McVittie]

Control: tags -1 + moreinfo

On Thu, 08 Aug 2024 at 11:32:17 +0200, Matthias Geiger wrote:
> GTK4 has gained support for using Vulkan as backend remderer [0]
> Please consider enabling it (see attached patch).
> 
> [0] https://blog.gtk.org/2024/01/28/new-renderers-for-gtk/

It has -Dauto_features=enabled, so it should already be enabled for Linux
non-udeb builds? The amd64 buildd log says:

  Features
    Vulkan support      : true

(But it's intentional that it's disabled for the udeb build, along
with many other normal features like Wayland and GStreamer. If we ever
manage to get d-i moved to Gtk 3 and then Gtk 4, we're unlikely to get
a libvulkan1-udeb.)

    smcv