A variable that specifies a video backend to use.
Defined in <SDL3/SDL_hints.h>
#define SDL_HINT_VIDEO_DRIVER "SDL_VIDEO_DRIVER"
By default, SDL will try all available video backends in a reasonable order until it finds one that can work, but this hint allows the app or user to force a specific target, such as "x11" if, say, you are on Wayland but want to try talking to the X server instead.
This hint should be set before SDL is initialized.
This hint is available since SDL 3.0.0.