// 'straight', then we need to blend transparent pixels with the
// clipped areas of this tile, because with the 'straight' blend
// method, even transparent pixels have an effect on the layers below
// 'straight', then we need to blend transparent pixels with the
// clipped areas of this tile, because with the 'straight' blend
// method, even transparent pixels have an effect on the layers below
// the area we're about to blit is transparent, so it doesn't
// matter whether we use 'straight' or 'straight onto' here
// the area we're about to blit is transparent, so it doesn't
// matter whether we use 'straight' or 'straight onto' here
/* This represents the area we're pasting into the tile,
* within the tile as a whole. Areas (A), (B), (C) and (D)
/* This represents the area we're pasting into the tile,
* within the tile as a whole. Areas (A), (B), (C) and (D)