debian man page for color_map

color_map(3alleg4)						  Allegro manual						color_map(3alleg4)

NAME
       color_map - Global pointer to the color mapping table. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       extern COLOR_MAP *color_map;

DESCRIPTION
       Global  pointer	to  the color mapping table. You must allocate your own COLOR_MAP either statically or dynamically and set color_map to it
       before using any translucent or lit drawing functions in a 256-color video mode! Example:

	  color_map = malloc(sizeof(COLOR_MAP));
	  if (!color_map)
	     abort_on_error("Not enough memory for color map!");

SEE ALSO
       create_color_table(3alleg4),	   create_light_table(3alleg4),        create_trans_table(3alleg4),	    create_blender_table(3alleg4),
       set_trans_blender(3alleg4),   draw_trans_sprite(3alleg4),  draw_lit_sprite(3alleg4),  draw_gouraud_sprite(3alleg4),  drawing_mode(3alleg4),
       ex3d(3alleg4), excolmap(3alleg4), exlights(3alleg4), exshade(3alleg4), extrans(3alleg4)

Allegro 							   version 4.4.2						color_map(3alleg4)