Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
create_light_table(3)		Allegro	manual		 create_light_table(3)

NAME
       create_light_table  - Fills a color mapping table for lighting effects.
       Allegro game programming	library.

SYNOPSIS
       #include	<allegro.h>

       void create_light_table(COLOR_MAP *table, const PALETTE pal, int	r,  g,
       b, void (*callback)(int pos));

DESCRIPTION
       Fills  the  specified  color  mapping  table with lookup	data for doing
       lighting	effects	with the specified palette. When combining the	colors
       c1  and	c2 with	this table, c1 is treated as a light level from	0-255.
       At light	level 255 the table will output	color c2 unchanged,  at	 light
       level  0	it will	output the r, g, b value you specify to	this function,
       and at intermediate light levels	it will	output a color	somewhere  be-
       tween the two extremes. The r, g, and b values are in the range 0-63.

       This  function  will  take  advantage  of the global rgb_ap variable to
       speed up	color conversions. If the callback function is	not  NULL,  it
       will  be	 called	256 times during the calculation, allowing you to dis-
       play a progress indicator. Example:

	  COLOR_MAP light_table;
	  ...
	  /* Build a color lookup table	for lighting effects. */
	  create_light_table(&light_table, pal,	0, 0, 0, NULL);

SEE ALSO
       color_map(3),   create_trans_table(3),	create_color_table(3),	  cre-
       ate_blender_table(3),	 draw_trans_sprite(3),	   draw_lit_sprite(3),
       draw_gouraud_sprite(3), rgb_map(3), ex3d(3), exshade(3),	extrans(3)

Allegro				 version 4.4.2		 create_light_table(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=create_light_table&sektion=3&manpath=FreeBSD+12.0-RELEASE+and+Ports>

home | help