BitmapActionReload
enum llbitmap_action action = BitmapActionReload;
[BitmapActionReload] = BitNone,
[BitmapActionReload] = BitNone,
[BitmapActionReload] = BitNeedSync,
[BitmapActionReload] = BitNone,
[BitmapActionReload] = BitNeedSync,
[BitmapActionReload] = BitUnwritten,
[BitmapActionReload] = BitUnwritten,
[BitmapActionReload] = BitNone,