create_rgb_table - Man Page

#include <allegro.h>

void create_rgb_table(RGB_MAP *table, const PALETTE pal, void (*callback)(int pos));

Fills the specified RGB mapping table with lookup data for the specified  palette. If the callback function is not NULL, it will be called 256  times during the calculation, allowing you to display a progress  indicator. Example:

   RGB_MAP rgb_table;
   
   create_rgb_table(&rgb_table, palette, NULL);
   rgb_map = &rgb_table;

rgb_map(3), ex3d(3), excolmap(3), exrgbhsv(3), exshade(3), extrans(3)

ex3d(3), excolmap(3), exrgbhsv(3), exshade(3), extrans(3), rgb_map(3), RGB_MAP(3).