exa(4) - man - phpman

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 effi‐
       cient, 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".   De‐
              fault: 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 21.1.4                                   EXA(4)