A variable specifying which render driver to use.
Defined in <SDL3/SDL_hints.h>
#define SDL_HINT_RENDER_DRIVER "SDL_RENDER_DRIVER"
If the application doesn't pick a specific renderer to use, this variable specifies the name of the preferred renderer. If the preferred renderer can't be initialized, creating a renderer will fail.
This variable is case insensitive and can be set to the following values:
The default varies by platform, but it's the first one in the list that is available on the current platform.
This hint should be set before creating a renderer.
This hint is available since SDL 3.1.3.