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rgb_map(3)			Allegro	manual			    rgb_map(3)

NAME
       rgb_map - Look up table to speed	up reducing RGB	values to palette col-
       ors. Allegro game programming library.

SYNOPSIS
       #include	<allegro.h>

       extern RGB_MAP *rgb_map;

DESCRIPTION
       To  speed up reducing RGB values	to 8-bit paletted colors, Allegro uses
       a 32k lookup table (5 bits for each color component). You must  set  up
       this  table  before  using the gouraud shading routines,	and if present
       the table will also vastly accelerate  the  makecol8()  and  some  cre-
       ate_*_table()  functions.  RGB  tables  can  be	precalculated with the
       rgbmap utility, or generated at runtime with create_rgb_table().

SEE ALSO
       create_rgb_table(3),    makecol8(3),    create_trans_table(3),	  cre-
       ate_light_table(3),    create_color_table(3),   ex3d(3),	  excolmap(3),
       exrgbhsv(3), exshade(3),	extrans(3)

Allegro				 version 4.4.3			    rgb_map(3)

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