{
// check if tile bitmap has limited C64 style colors
tile_surface_c64 = get_tile_surface_c64(bitmap->surface, scale_down_factor);
{
// check if tile bitmap has limited C64 style colors
tile_surface_c64 = get_tile_surface_c64(bitmap->surface, scale_down_factor);
// store reference tile bitmap from current artwork set (may be changed later)
gd_tile_bitmap_reference = bitmap;
// store reference tile bitmap from current artwork set (may be changed later)
gd_tile_bitmap_reference = bitmap;