exa(4) - Linux man page
Name
exa - new 2D acceleration architecture for X.OrgDescription
The EXA architecture is designed to make accelerating the Render extension simple and efficient, and results in various performance tradeoffs compared to XAA. Some 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 freamebuffer. Default: No.
- Option EXANoDownloadFromScreen boolean
- Disables acceleration of downloading of pixmap data from the framebuffer. NOTE: Not usable with drivers which rely on DownloadFromScreen succeeding. Default: No.
- Option EXAOptimizeMigration boolean
- Enables an additional optimization for migration of destination pixmaps. This may improve performance in some cases (e.g. when switching virtual desktops with no compositing manager) but causes corruption in others (e.g. when starting compiz). 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. Default: always.
