Works well with Chrome and Firefox on Linux correctly on two tested systems (AMD Jaguar based Netbook, Intel i540M (Ironlake) Laptop (OpenGL-2.1)) with open source GPU drivers.

However, CPU useage on Firefox is about 2x of what I get with Chrome.
I already filed a bug against Firefox, feel free to communicate the technical details with them: https://bugzilla.mozilla.org/show_bug.cgi?id=1375844