How do I filter a view with a field on a group the current user is in? The site I'm working on will have many OG groups, each with a list of topics relevant to their members. I would like to show content to the logged in user that is about their group's relevant topics.

I started by creating a vocabulary (Topic) and two content types (Group and Post). Group and Post both have a term reference field that lists Topic terms (groups have topics that are relevant to the group, and posts have topics about which they're written).

How can I create a view that shows only posts with at least one Topic term in common with the logged in user's group's Topic list?
It looks like this may not be possible with the current stable release of OG (7.x-1.3). I think it would require at least the patch from issue #1341990 along with the patch from this comment on issue #1151648, but I'm completely new to Drupal so it's not unlikely that I'm missing something.