How do I enable Glamor mode which accelerates 2D graphics with OpenGL on Ubuntu?
See Choose acceleration method on Arch Linux wiki.
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GLAMOR is an acceleration library merged into the X.Org Server 1.16 that provides 2D acceleration implemented over OpenGL so X.Org DDX drivers no longer need to implement 2D-specific code-paths. GLAMOR is designed to be universal amongst OpenGL / OpenGL ES supported hardware.
For Trusty the package to install is:
sudo apt-get install xserver-xorg-video-glamoregl
And you also have to manually edit /usr/share/X11/xorg.conf.d/glamoregl.conf to enable it.
Sylvain Pineau
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