set_dissolve_blender - Enables a dissolve blender mode. Allegro game programming
library.
#include <allegro.h>
void set_dissolve_blender(int r, int g, int b, int a);
Enables a dissolve blender mode for combining translucent or lit truecolor
pixels. Randomly replaces the colours of some pixels in the destination image
with those of the source image. The number of pixels replaced depends on the
alpha value (higher value, more pixels replaced; you get the idea :).
set_trans_blender(3), drawing_mode(3)