trusty (4) exa.4.gz

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 Dänzer