| 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 |