/**

 * Copy the current palette if the palette was updated.

 * Used by video-driver to get a current up-to-date version of the palette,

 * to avoid two threads accessing the same piece of memory (with a good chance

 * one is already updating the palette while the other is drawing based on it).

 * @param local_palette The location to copy the palette to.

 * @param force_copy Whether to ignore if there is an update for the palette.

 * @return True iff a copy was done.

 */

bool CopyPalette(Palette &local_palette, bool force_copy)

{

	if (!force_copy && _cur_palette.count_dirty == 0) return false;

	local_palette = _cur_palette;

	_cur_palette.count_dirty = 0;

	if (force_copy) {

		local_palette.first_dirty = 0;

		local_palette.count_dirty = 256;

	}

	return true;

}