How does Blizzard manage to support Mac OS and Windows in their games?

Posted by begray on Game Development See other posts from Game Development or by begray
Published on 2011-01-04T10:04:17Z Indexed on 2011/01/04 11:58 UTC
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engine

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Windows

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macos

I've always thought, that using Direct X for Windows was the most powerful, easy and modern method to create games with modern graphics nowdays. And knowing, that it's only Windows I thinks it's pretty difficult to make something similar on other platforms (Mac OS to be exact). But Blizzard somehow managed to deliver Starcraft 2 for Mac OS, and Diablo 3 will be available for Mac too.

So what I'm interested in is information about:

what technologies are they using for their game engines?
are they using one engine for both games (Starcraft 2 and Diablo 3)? Or develop custom for each game?
what are they paying in terms of time and money for Mac OS support?

Thanks

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