43 lines
1.8 KiB
Groff
43 lines
1.8 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. It
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is a module loaded by drivers, 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 and
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efficient, and results in various performance tradeoffs compared to XAA. Some
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__xconfigfile__ options are available for debugging performance issues or
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driver rendering problems. 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, which is at the heart of
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the Render extension. Not related to the Composite extension. 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. 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, for debugging purposes. The
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default is intended to be the best performing one for general use, though others
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may help with specific use cases. Available options include \*qalways\*q,
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\*qgreedy\*q, and \*qsmart\*q. Default: always.
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.SH "SEE ALSO"
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.BR __xservername__ (__appmansuffix__),
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.BR __xconfigfile__(__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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