[audidude]

Surprisingly, still GTK 3 which means software rendering.

If they get it to GTK 4 and recent WebKit release they'll get a lot of DMA-BUF usage to bring many of those WebKit->GTK->Compositor copies to 1 (or in some offloading cases, zero).

[NewJazz]

Hopefully none of the "extensibility" is tied to gtk3. AIUI gimp and inkscape extensibility is what kept them using python2 for so long.