set_blender_mode - Specifies a custom set of truecolor blender routines. Allegro
game programming library.
#include <allegro.h>
void set_blender_mode(BLENDER_FUNC b15, b16, b24, int r, g, b,
a);
Specifies a custom set of truecolor blender routines, which can be used to
implement whatever special interpolation modes you need. This function shares
a single blender between the 24 and 32-bit modes.
set_blender_mode_ex(3), set_trans_blender(3), color_map(3),
draw_trans_sprite(3), draw_lit_sprite(3), drawing_mode(3)