Provided by: xserver-xorg-core_1.10.4-1ubuntu4_i386 bug

NAME

       exa - new 2D acceleration architecture for X.Org

DESCRIPTION

       EXA  provides  a  simple  API  for  video  drivers  to implement for 2D
       acceleration.  It is a module loaded by drivers, and is not intended to
       be  loaded on its own.  See your driver's manual page for how to enable
       EXA.

       The EXA architecture  is  designed  to  make  accelerating  the  Render
       extension  simple  and  efficient,  and  results in various performance
       tradeoffs compared to XAA.  Some xorg.conf options  are  available  for
       debugging  performance  issues  or driver rendering problems.  They are
       not intended for general use.

       Option "EXANoComposite" "boolean"
              Disables acceleration of the Composite operation,  which  is  at
              the heart of the Render extension.  Not related to the Composite
              extension.  Default: No.

       Option "EXANoUploadToScreen" "boolean"
              Disables  acceleration  of  uploading   pixmap   data   to   the
              framebuffer. Default: No.

       Option "EXANoDownloadFromScreen" "boolean"
              Disables  acceleration  of  downloading  of pixmap data from the
              framebuffer.  NOTE:  Not  usable  with  drivers  which  rely  on
              DownloadFromScreen succeeding.  Default: No.

       Option "MigrationHeuristic" "anystr"
              Chooses  an  alternate pixmap migration heuristic, for debugging
              purposes.  The default is intended to be the best performing one
              for general use, though others may help with specific use cases.
              Available  options  include  "always",  "greedy",  and  "smart".
              Default: always.

SEE ALSO

       Xorg(1), xorg.conf(5).

AUTHORS

       Authors  include:  Keith  Packard,  Eric Anholt, Zack Rusin, and Michel
       Danzer