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EXA(4)			   Kernel Interfaces Manual			EXA(4)

       exa - new 2D acceleration architecture for X.Org

       EXA  provides a simple API for video drivers to implement for 2D	accel-
       eration.	 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

       The EXA architecture is designed	to make	accelerating the Render	exten-
       sion 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	frame-
	      buffer. Default: No.

       Option "EXANoDownloadFromScreen"	"boolean"
	      Disables	acceleration  of  downloading  of pixmap data from the
	      framebuffer.  NOTE: Not usable with drivers which	rely on	 Down-
	      loadFromScreen 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.

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

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

X Version 11		      xorg-server 1.20.9			EXA(4)


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