I noticed in RenderQueue.java there is multi pass support for transparent objects. Would it be faster to render everything expect transparent objects then use frame buffer to do the transparent effects? This would allow you do to front to back rendering on transparent objects right? Also what is actually going to be done to put multi pass support into jme? Do you have the framework laid out?
Front to back rendering is actually a bit more complicated than simply rendering them in the right order… that's why the multipass is needed. As far as the multipass structure… stay tuned. Now that third person is done, I'll be beginning multipass next week.