al_set_shader_int - Allegro 5 API

       Sets an integer uniform of the current target bitmap’s shader.

       Returns true on success.  Otherwise returns false, e.g. if the uniform by that name does not exist in the
       shader.

       al_set_shader_int - Allegro 5 API

al_use_shader(3alleg5)

Allegro reference manual                                                              al_set_shader_int(3alleg5)

       5.1.0

              #include <allegro5/allegro.h>

              bool al_set_shader_int(const char *name, int i)