.\" Generated by the Allegro makedoc utility
.TH fli_pal_dirty_from 3alleg4 "version 4.4.3" "Allegro" "Allegro manual"
.SH NAME
fli_pal_dirty_from, fli_pal_dirty_to \- Indicate which parts of the palette have changed. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B extern int fli_pal_dirty_from;

.B extern int fli_pal_dirty_to;
.SH DESCRIPTION
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:

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

.SH SEE ALSO
.BR fli_palette (3alleg4),
.BR reset_fli_variables (3alleg4)