We've been writing a lot about GLAMOR (and doing performance tests) with this universal 2D GPU acceleration code making very good progress for the X.Org Server 1.16 release this summer.
Keith Packard penned a new blog post last night to provide a status update on his work and that of Eric Anholt. The main takeaway from the blog post is "I’ve hacked up the intel driver to bypass all of the UXA paths when Glamor is enabled so I’m currently running an X server that uses only Glamor for all rendering. There are still too many fall backs, and performance for some operations is not what I’d like, but it’s entirely usable. It supports DRI3, so I even have GL applications running."
Additionally, in ending, "I’m pretty sure we’ll have the code in good enough shape to merge before the window closes for X server 1.16. Eric is in charge of the glamor tree, so it’s up to him when stuff is pulled in. He and Markus Wick have also been generating code and reviewing stuff, but we could always use additional testing and review to make the code as good as possible before the merge window closes. Markus has expressed an interest in working on Glamor as a part of the X.org summer of code this year; there’s clearly plenty of work to do here, Eric and I haven’t touched the render acceleration stuff at all, and that code could definitely use some updating to use more modern GL features. If that works as well as the core rendering code changes, then we can look forward to a Glamor which offers GPU-limited performance for classic X applications, without requiring GPU-specific drivers for every generation of every chip."