al_scale_transform_3d - Allegro 5 API

       Combines the given transformation with a transformation which scales coordinates by the given vector.

       al_scale_transform_3d - Allegro 5 API

al_use_projection_transform(3alleg5)

Allegro reference manual                                                          al_scale_transform_3d(3alleg5)

       5.1.3

              #include <allegro5/allegro.h>

              void al_scale_transform_3d(ALLEGRO_TRANSFORM *trans, float sx, float sy,
                  float sz)