Block the calling thread until the next vsync happens on the specified display.
#include <screen/screen.h>
int screen_wait_vsync(screen_display_t display)
An instance of the display on which to perform the the vsync operation.
Function Type: Immediate Execution
This function blocks the calling thread and returns when the next vsync operation occurs on the specified display.
0 if a vsync operation occurred, or -1 of an error occurred (errno is set; refer to /usr/include/errno.h for more details).