Allegro 5 api
#include <allegro5/allegro.h> ALLEGRO_BITMAP *al_clone_bitmap(ALLEGRO_BITMAP *bitmap)
Create a new bitmap with al_create_bitmap(3alleg5), and copy the pixel data from the old bitmap across.
al_create_bitmap(3alleg5), al_set_new_bitmap_format(3alleg5), al_set_new_bitmap_flags(3alleg5)