Martin Gräßlin has now written a follow-up blog post to clear up some of the KWin / OpenGL problems. In this new blog post he covers the OpenGL frame-buffer object and GLSL (GL Shading Language) changes done within KWin for KDE SC 4.5, the lack of communication between KWin and Mesa developers, Mesa shipping broken extensions, and the OpenGL 3.x compositing support in KDE 4.7, among other related items.
Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.