fli_pal_dirty_from man page

fli_pal_dirty_from, fli_pal_dirty_to — Indicate which parts of the palette have changed. Allegro game programming library.


#include <allegro.h>

extern int fli_pal_dirty_from;

extern int fli_pal_dirty_to;


These variables are set by next_fli_frame() to indicate which part of the fli_palette has changed since the last call to reset_fli_variables(). If fli_pal_dirty_from is greater than fli_pal_dirty_to, the palette has not changed, otherwise colors fli_pal_dirty_from to fli_pal_dirty_to (inclusive) have altered. You can use these when updating the hardware palette, to avoid unnecessary calls to set_palette(). Example:

if (fli_pal_dirty_from <= fli_pal_dirty_to)
   set_palette_range(fli_palette, fli_pal_dirty_from,
                     fli_pal_dirty_to, 1);

See Also

fli_palette(3), reset_fli_variables(3)

Referenced By

fli_palette(3), reset_fli_variables(3).

Explore man page connections for fli_pal_dirty_from(3).

fli_pal_dirty_to(3) is an alias of fli_pal_dirty_from(3).

Allegro version 4.4.2 Allegro manual