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(Unverified)Nov 27th 2009 9:38PM

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The straight facts: the Gecko renderer Firefox is using is Cairo, a 2D abstraction layer for rendering to multiple kinds of destination. It already has an OpenGL backend, which should be a lot faster than Direct2D but perhaps it's only in use on Linux?

But the main thing I was going to say was that because it's an abstraction layer, all you need to write is a Cairo backend for Direct2D. Presumably someone on the Cairo project would have been working on this already, and it's not considered as something Firefox themselves would need to write (someone from the project might write it, but the code would still end up in Cairo, not Firefox itself.)

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