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CREATE_LIGHT_TABLE(3ALLEG4) - Linux manual page online | Library functions

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

version 4.4.2
create_light_table(3alleg4) Allegro manual create_light_table(3alleg4)


create_light_table - Fills a color mapping table for lighting effects. Allegro game pro‐ gramming library.


#include <allegro.h> void create_light_table(COLOR_MAP *table, const PALETTE pal, int r, g, b, void (*call‐ back)(int pos));


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 between 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 conver‐ sions. If the callback function is not NULL, it will be called 256 times during the calcu‐ lation, allowing you to display 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);


color_map(3alleg4), create_trans_table(3alleg4), create_color_table(3alleg4), cre‐ ate_blender_table(3alleg4), draw_trans_sprite(3alleg4), draw_lit_sprite(3alleg4), draw_gouraud_sprite(3alleg4), rgb_map(3alleg4), ex3d(3alleg4), exshade(3alleg4), extrans(3alleg4)
Allegro version 4.4.2 create_light_table(3alleg4)
This manual Reference Other manuals
create_light_table(3alleg4) referred by color_map(3alleg4) | create_blender_table(3alleg4) | create_color_table(3alleg4) | create_trans_table(3alleg4) | ex3d(3alleg4) | exshade(3alleg4) | extrans(3alleg4)
refer to color_map(3alleg4) | create_color_table(3alleg4) | create_trans_table(3alleg4) | draw_gouraud_sprite(3alleg4) | draw_lit_sprite(3alleg4) | draw_trans_sprite(3alleg4) | ex3d(3alleg4) | exshade(3alleg4) | extrans(3alleg4) | rgb_map(3alleg4)
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