set_multiply_blender (3) - Linux Manuals
set_multiply_blender: Enables a multiply blender mode. Allegro game programming library.
Command to display set_multiply_blender manual in Linux: $ man 3 set_multiply_blender
NAME
set_multiply_blender - Enables a multiply blender mode. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
void set_multiply_blender(int r, int g, int b, int a);
DESCRIPTION
Enables a multiply blender mode for combining translucent or lit
truecolor pixels. Combines the source and destination images, multiplying
the colours to produce a darker colour. If a colour is multiplied by
white it remains unchanged; when multiplied by black it also becomes
black.
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