Finally, some leaves. In this image you can see how trees look once the crown blobs have been seeded with branch instances. It is a very early test, but I thought it may help you see beyond the green blobs in all my previous tree screenshots.
This renders in realtime. I took the screenshot from my experimental HTTP streamer Sputnik. The lighting is very primitive. This will improve a lot with the radiosity solution.
I have been playing under this forest for a while now. I will post a video when I get some time.
As usual I look forward to your suggestions and ideas. I want to thank Robin Green for pointing a nice method to smooth normals. I'm already using portions of that.