It seems to me you will need avisa for Poland. Very few countries in Europe don't require visas for RTD holders an even less countries for Reentry permits. For RTD holder no visa for Germany,Slovenia(GC),slovakia(GC),Croatia(GC) and Hungary didnt use to require it with GC but now I think they do since they joined the EU. Best of luck in your trip...
Well, just remember that it'll have to be for a country other than Germany. I asked the German consulate in San Francisco if they could just issue me a visa because I wanted to go to the Netherlands as well, but they said no. I would have preferred a German Schengen because the Dutch consulate takes SO LONG with my RTD. I don't know why, but I think it's because I don't have a job (I'm a student).