Hi Tom Stellard!

Now I updated kernel to 3.13, drm from git, radeon x driver from git and mesa
from git with above patch. And patch really fixed problem with glamor rendering
:-)

Here is output from glxgears

$ glxgears 
Default raster_config = 0x124a
rb mask = 10
Final raster_config = 0x124f
Default raster_config = 0x124a
rb mask = 10
Final raster_config = 0x124f
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
270 frames in 5.0 seconds = 53.990 FPS
^C

Tested also with 3.14-rc1 kernel and still working. But with old kernels (3.11)
there is same problem and not working.