53 lines
1.7 KiB
Groff
53 lines
1.7 KiB
Groff
.\" shorthand for double quote that works everywhere.
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.ds q \N'34'
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.TH EXA @drivermansuffix@ @vendorversion@
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.SH NAME
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exa \- new 2D acceleration architecture for X.Org
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.SH DESCRIPTION
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.B EXA
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provides a simple API for video drivers to implement for 2D acceleration.
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It is a module loaded by drivers,
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and is not intended to be loaded on its own.
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See your driver's manual page for how to enable
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.BR EXA .
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.PP
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The
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.B EXA
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architecture is designed to make accelerating the Render extension simple
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and efficient,
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and results in various performance tradeoffs compared to XAA.
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Some xorg.conf options are available for debugging performance issues
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or driver rendering problems.
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They are not intended for general use.
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.TP
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.BI "Option \*qEXANoComposite\*q \*q" boolean \*q
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Disables acceleration of the Composite operation,
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which is at the heart of the Render extension.
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Not related to the Composite extension.
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Default: No.
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.TP
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.BI "Option \*qEXANoUploadToScreen\*q \*q" boolean \*q
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Disables acceleration of uploading pixmap data to the framebuffer.
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Default: No.
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.TP
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.BI "Option \*qEXANoDownloadFromScreen\*q \*q" boolean \*q
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Disables acceleration of downloading of pixmap data from the framebuffer.
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.B NOTE:
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Not usable with drivers which rely on DownloadFromScreen succeeding.
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Default: No.
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.TP
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.BI "Option \*qMigrationHeuristic\*q \*q" anystr \*q
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Chooses an alternate pixmap migration heuristic,
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for debugging purposes.
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The default is intended to be the best performing one for general use,
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though others may help with specific use cases.
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Available options include \*qalways\*q,
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\*qgreedy\*q,
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and \*qsmart\*q.
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Default: always.
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.SH SEE ALSO
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.BR Xorg (@appmansuffix@),
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.BR xorg.conf (@filemansuffix@).
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.SH AUTHORS
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Authors include: Keith Packard, Eric Anholt, Zack Rusin, and Michel D\(:anzer
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