Be sure to check out the shadow demo that this is based on:

After posting my shadow experiment, Patrick Matte posed a question wondering if I would be able to do real-time reflections in a similar manner. The next day I had it done, along with some nice iterations along the way: orthographic and perspective projection (I can release those later if anyone really wants them). I’ve been sitting on it every since and finally decided I would take the time to write a little description into how its done and give the code to those who are interested (and I fixed up some code for backface culling in the reflection this morning).

• View the reflections demo
• View the reflections post
• View the shadow demo
• View the shadow post