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Firefox supports GPU accelleration on nouveau and all Mesa drivers from Mesa 8.0 forward.

• staktrace 8y ago
  Not by default. GPU acceleration is off by default in Firefox on Linux. Distros may change that in their bundles, but the official builds have it turned off.
  • Sir_Cmpwn 8y ago
    Do you have a source for this? This page disagrees: https://wiki.mozilla.org/Blocklisting/Blocked_Graphics_Drivers#On_X11 https://wiki.mozilla.org/Blocklisting/Blocked_Graphics_Drive... My unmodified Firefox stable channel on Linux has WebGL enabled OOTB and my distro does not have any specific flags specified for WebGL (or GL in general) in the package.
    • staktrace 8y ago
      The page you linked to says: > GL layers acceleration is not yet enabled by default (see bug 594876). You can enable it by setting layers.acceleration.force-enabled=true in about:config. That means off by default. Also maybe relevant is that I'm on the Firefox Graphics team so I have some knowledge of this. If you want to verify, download a stock Firefox build from Mozilla, run it on a new profile, and check what it says for Compositing in the Graphics section. OpenGL means acceleration, Basic means software.
      • staktrace 8y ago
        That should say "... Graphics section of about:support"