set_dodge_blender - Enables a dodge blender mode. Allegro game programming library.
#include <allegro.h> void set_dodge_blender(int r, int g, int b, int a);
Enables a dodge blender mode for combining translucent or lit truecolor pixels. The lightness of colours in the source lighten the colours of the destination. White has the most effect; black has none.
set_trans_blender(3alleg), drawing_mode(3alleg)