static extern int drmModePageFlip(int fd, uint crtc_id, uint fb_id, PageFlipFlags flags, ref int user_data);
public static extern int ModePageFlip(int fd, int crtc_id, int fb_id, PageFlipFlags flags, IntPtr user_data);
public static int PageFlip(int fd, uint crtc_id, uint fb_id, PageFlipFlags flags, ref int user_data) => drmModePageFlip(fd, crtc_id, fb_id, flags, ref user_data);