Prevent the screen from being blanked by a screen saver.
Defined in SDL_video.h
void SDL_DisableScreenSaver(void);
If you disable the screensaver, it is automatically re-enabled when SDL quits.
The screensaver is disabled by default since SDL 2.0.2. Before SDL 2.0.2 the screensaver was enabled by default.
This function is available since SDL 2.0.0.