KDE/Kwin included this only recently
[url]https://www.phoronix.com/scan.php?page=news_item&px=EGLStreams-Merged-KWin-5.16[/url]
Gnome/mutter had this for some time but not in a stable manner so this was often disabled by distros.
Don’t know of any other WMs supporting eglstreams.