Optimizations for Firefox on Linux

user.js

// Force-enable hardware acceleration.
// Setting MOZ_USE_OMTC=1 is necessary.
// http://en.librehat.com/blog/force-enable-hardware-acceleration-in-firefox-on-linux/
user_pref("webgl.force-enabled", true);
user_pref("layers.acceleration.force-enabled", true);
user_pref("layers.offmainthreadcomposition.enabled;true", true);
user_pref("layers.offmainthreadcomposition.async-animations", true);

// Force-enable Skia backend for Azure
// https://bugzilla.mozilla.org/show_bug.cgi?id=740200#c44
user_pref("gfx.content.azure.backends", "skia");
user_pref("gfx.canvas.azure.backends", "skia");