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Intel UXA Acceleration Performance

Dec 29, 2008, 19:32 (0 Talkback[s])
(Other stories by Michael Larabel)

[ Thanks to Michael Larabel for this link. ]

"UXA was introduced in early August to allow 2D pixmaps to become GEM objects. The EXA API was used as the basis of forming UXA but the code was then stripped away and replaced with code to support the Graphics Execution Manager for managing its memory. A month later it was clarified by Keith Packard at the X Developers' Summit with his UXA intentions. At that time he stated the UMA Acceleration Architecture will be discontinued and the GEM changes merged back into EXA once they decide how to split the pixmap management and acceleration architecture components. Keith hoped to have this revised EXA work done for X Server 1.6, but that hasn't been completed in time.

"The UXA support is currently living within the xf86-video-intel 2.5 and xf86-video-video-intel 2.6 drivers and does require the Linux 2.6.28 kernel or later for the Graphics Execution Manager support. By default the Intel driver continues to use EXA so the AccelMethod option within the xorg.conf must be set to UXA."

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