Basically this is really great (if they produce something useable), because now *all* drivers have solid XRender support:
- NVidia's proprietary drivers are best in class, doing even Trapezoids on the GPU (for GTX260++)
- All major open-source drivers (intel, radeon, nouveau) support XRender quite well
- Hopefully soon fglrx will accelerate it soon too.
So basically 95% of hw in use has drivers with quite good XRender support :)
And even on hardware/driver combos that don't accelerate it well, pixman fallbacks shouldn't be much slower than what java does with its X11 pipeline.
I would love to see it enabled in JDK7 by default, even it that would mean a lot of work + compatibility testing. JDK7 is still early enough to get serious testing. As optional pipeline, it seems notbody uses it (or it just works) ;)