Sure, its nothing to rely on, but at least a nice demo and at least gives some indication where we are when it comes to shape rendering.
EXA: 32/85 (No AA / AA)
So for aliased rendering Java running the XRender pipeline is quite a good deal faster, but we are behind when it comes to antialiased rendering.
I guess a large amount of cycles accounts to xlib/xcb, we hit 17500 context switches per second, I filed a bug about the problem discussed recently: https://bugs.freedesktop.org/
This was on Xorg-1.4.99.05, so the EXA results are influenced by some performance problems that version has.
I'll have to ask zack, if he agrees source will be available soon.