exa

EXA(4)                      Kernel Interfaces Manual                      EXA(4)



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



X Version 11                   xorg-server 1.20.9                         EXA(4)