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  trade-
       offs  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 DownloadFrom-
	      Screen 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

X Version 11							xorg-server 1.12.4							    EXA(4)