{
    "mode": "man",
    "parameter": "EXA",
    "section": "4",
    "url": "https://www.chedong.com/phpMan.php/man/EXA/4/json",
    "generated": "2026-10-20T09:03:46Z",
    "sections": {
        "NAME": {
            "content": "exa - new 2D acceleration architecture for X.Org\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "EXA provides a simple API for video drivers to implement for 2D acceleration.  It is a module\nloaded  by  drivers,  and  is not intended to be loaded on its own.  See your driver's manual\npage for how to enable EXA.\n\nThe EXA architecture is designed to make accelerating the Render extension simple  and  effi‐\ncient,  and results in various performance tradeoffs compared to XAA.  Some xorg.conf options\nare available for debugging performance issues or driver rendering problems.   They  are  not\nintended for general use.\n\nOption \"EXANoComposite\" \"boolean\"\nDisables  acceleration of the Composite operation, which is at the heart of the Render\nextension.  Not related to the Composite extension.  Default: No.\n\nOption \"EXANoUploadToScreen\" \"boolean\"\nDisables acceleration of uploading pixmap data to the framebuffer. Default: No.\n\nOption \"EXANoDownloadFromScreen\" \"boolean\"\nDisables acceleration of downloading of pixmap data from the framebuffer.   NOTE:  Not\nusable with drivers which rely on DownloadFromScreen succeeding.  Default: No.\n\nOption \"MigrationHeuristic\" \"anystr\"\nChooses  an alternate pixmap migration heuristic, for debugging purposes.  The default\nis intended to be the best performing one for general use, though others may help with\nspecific use cases.  Available options include \"always\", \"greedy\", and  \"smart\".   De‐\nfault: always.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "Xorg(1), xorg.conf(5).\n",
            "subsections": []
        },
        "AUTHORS": {
            "content": "Authors include: Keith Packard, Eric Anholt, Zack Rusin, and Michel Dänzer\n\nX Version 11                             xorg-server 21.1.11                                  EXA(4)",
            "subsections": []
        }
    },
    "summary": "exa - new 2D acceleration architecture for X.Org",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "Xorg",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/Xorg/1/json"
        },
        {
            "name": "xorg.conf",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/xorg.conf/5/json"
        }
    ]
}