set_screen_blender (3) - Linux Manuals
set_screen_blender: Enables a screen blender mode. Allegro game programming library.
Command to display set_screen_blender manual in Linux: $ man 3 set_screen_blender
NAME
set_screen_blender - Enables a screen blender mode. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
void set_screen_blender(int r, int g, int b, int a);
DESCRIPTION
Enables a screen blender mode for combining translucent or lit truecolor
pixels. This blender mode lightens the colour of the destination image by
multiplying the inverse of the source and destination colours. Sort of
like the opposite of the multiply blender mode.
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