DOKK / manpages / debian 10 / allegro5-doc / al_get_bitmap_depth.3alleg5.en
al_get_bitmap_depth(3alleg5) al_get_bitmap_depth(3alleg5)

al_get_bitmap_depth - Allegro 5 API

#include <allegro5/allegro.h>
int al_get_bitmap_depth(ALLEGRO_BITMAP *bitmap)
    

Return the depthbuffer depth used by this bitmap if it is used with al_set_target_bitmap(3alleg5).

5.2.1

[Unstable API]: This is an experimental feature and currently only works for the OpenGL backend.

Allegro reference manual