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### DRI Extension
#### What does the XFree86 DRI extension?
The XFree86-DRI X server extension is basically used for communication between the other DRI components (the X server, the kernel module, _libGL.so_ and the 3D DRI drivers).
The XFree86-DRI module maintains DRI-specific data structures related to screens, windows, and rendering contexts. When the user moves a window, for example, the other DRI components need to be informed so that rendering appears in the right place.
#### Where does the XFree86 DRI extension resides?
The DRI extension module usually resides at _/usr/X``11R6/lib/modules/extensions/libdri.a_.
The DRI extension source code resides at [[xc/programs/Xserver/GL/dri/|http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/dri/xc/xc/programs/Xserver/GL/dri/]] .
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