Mutter/Clutter Work Leads To New GLX Extension
Written by Michael Larabel in GNOME on 16 November 2009 at 08:10 PM EST. 2 Comments
Following a meeting last week between Jesse Barnes, Chris Wilson, and Kristian Høgsberg with developers working on the Clutter tool-kit and GNOME's Mutter window manager, there is a new GLX extension that has been proposed as a result. Jesse Barnes has announced their work on the GLX_INTEL_swap_event extension, which helps GLX integrate better with glib style event loops.

GLX_INTEL_swap_event basically notifies the client when a buffer swap has been completed. The benefit of this extension is that glXSwapBuffers call can be made a-synchronous so that the client can continue on doing other work, but then will be notified when the swap has taken place so that it can return to preparing the next buffer. It's really quite simple.

This buffer swap event extension specification can be read at FreeDesktop.org in its current form. Jesse has code that introduces GLX_INTEL_swap_event in his Git repositories for glxproto, dri2proto, the X.Org Server, and Mesa for the Intel Linux graphics stack. His RFC message can be found on the X.Org mailing list.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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