al_set_new_bitmap_depth(3) al_set_new_bitmap_depth(3)

al_set_new_bitmap_depth - Allegro 5 API

#include <allegro5/allegro.h>
void al_set_new_bitmap_depth(int depth)
SETTER(new_bitmap_depth, depth)

Sets the depthbuffer depth used by newly created bitmaps (on the current thread) if they are used with al_set_target_bitmap(3). 0 means no depth-buffer will be created when drawing into the bitmap, which is the default.

5.2.1

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

Allegro reference manual