set_color_blender - Enables a color blender mode. Allegro game programming library.

       Enables  a color blender mode for combining translucent or lit truecolor pixels. Applies only the hue and
       saturation of the source image to the destination image. The luminance of the destination  image  is  not
       affected.

       set_color_blender - Enables a color blender mode. Allegro game programming library.

set_trans_blender(3alleg4), drawing_mode(3alleg4)

Allegro                                           version 4.4.3                       set_color_blender(3alleg4)

#include<allegro.h>voidset_color_blender(intr,intg,intb,inta);