Phoronix: ApiTrace 2.0 Brings OpenGL 4.2, Faster Performance

Earlier this year Zack Rusin introduced ApiTrace as a new way to debug graphics drivers and other areas of the graphics stack. ApiTrace is an open-source utility that allows capturing DirectX/OpenGL API calls and to analyze them later on in a step-by-step manner. There's also other features like real-time editing of shaders and making other tweaks to how the calls are executed. ApiTrace even has a nice GUI too. Zack has now announced ApiTrace 2.0 and it makes this very useful graphics utility even much better...

http://www.phoronix.com/vr.php?view=OTk1MQ