A variable controlling whether the libdecor Wayland backend is allowed to be used.
Defined in SDL_hints.h
#define SDL_HINT_VIDEO_WAYLAND_ALLOW_LIBDECOR "SDL_VIDEO_WAYLAND_ALLOW_LIBDECOR"
This variable can be set to the following values:
libdecor is used over xdg-shell when xdg-decoration protocol is unavailable.