Hi, didn't quite know where to post this but here goes.
I stumbled over this Youtube video two weeks ago and wanted to see if this is of any interest to the devs of Corona:
Seems like a huge upgrade to how to handle caustics/speculars, even if it might be inaccurate
I do not know the inner workings of Corona so I'm not even sure if this is possible, or if you're already using something similar.
Anyway, keep up the good work!