al_reset_bitmap_blender - Allegro 5 API

       Resets  the  blender  for this bitmap to the default.  After resetting the bitmap blender, the values set
       for al_set_bitmap_blender(3alleg5)/al_set_separate_bitmap_blender(3alleg5) will be used instead.

       al_reset_bitmap_blender - Allegro 5 API

al_set_bitmap_blender(3alleg5)

Allegro reference manual                                                        al_reset_bitmap_blender(3alleg5)

       5.2.5

              [UnstableAPI]: New API.

              #include <allegro5/allegro.h>

              void al_reset_bitmap_blender(void)