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1 | .\" shorthand for double quote that works everywhere. |
2 | .ds q \N'34' | |
3 | .TH EXA __drivermansuffix__ __vendorversion__ | |
4 | .SH NAME | |
5 | exa \- new 2D acceleration architecture for X.Org | |
6 | .SH DESCRIPTION | |
7 | .B EXA | |
8 | provides a simple API for video drivers to implement for 2D acceleration. It | |
9 | is a module loaded by drivers, and is not intended to be loaded on its own. | |
10 | See your driver's manual page for how to enable | |
11 | .BR EXA . | |
12 | .PP | |
13 | The | |
14 | .B EXA | |
15 | architecture is designed to make accelerating the Render extension simple and | |
16 | efficient, and results in various performance tradeoffs compared to XAA. Some | |
17 | xorg.conf options are available for debugging performance issues or | |
18 | driver rendering problems. They are not intended for general use. | |
19 | .TP | |
20 | .BI "Option \*qEXANoComposite\*q \*q" boolean \*q | |
21 | Disables acceleration of the Composite operation, which is at the heart of | |
22 | the Render extension. Not related to the Composite extension. Default: No. | |
23 | .TP | |
24 | .BI "Option \*qEXANoUploadToScreen\*q \*q" boolean \*q | |
25 | Disables acceleration of uploading pixmap data to the framebuffer. Default: No. | |
26 | .TP | |
27 | .BI "Option \*qEXANoDownloadFromScreen\*q \*q" boolean \*q | |
28 | Disables acceleration of downloading of pixmap data from the framebuffer. | |
29 | .B NOTE: | |
30 | Not usable with drivers which rely on DownloadFromScreen succeeding. | |
31 | Default: No. | |
32 | .TP | |
33 | .BI "Option \*qMigrationHeuristic\*q \*q" anystr \*q | |
34 | Chooses an alternate pixmap migration heuristic, for debugging purposes. The | |
35 | default is intended to be the best performing one for general use, though others | |
36 | may help with specific use cases. Available options include \*qalways\*q, | |
37 | \*qgreedy\*q, and \*qsmart\*q. Default: always. | |
38 | .SH "SEE ALSO" | |
39 | .BR Xorg (__appmansuffix__), | |
40 | .BR xorg.conf(__filemansuffix__). | |
41 | .SH AUTHORS | |
42 | Authors include: Keith Packard, Eric Anholt, Zack Rusin, and Michel D\(:anzer |