GetPixelRGBO     8597 coders/png.c                          GetPixelRGBO(q, transparent);
GetPixelRGBO     8619 coders/png.c                          GetPixelRGBO(q, transparent+i);
GetPixelRGBO     8629 coders/png.c                          GetPixelRGBO(q, semitransparent);
GetPixelRGBO     8645 coders/png.c                          GetPixelRGBO(q, semitransparent+i);