Many developers descending on the Game Developers Conference (GDC) are expected to come toting prototype videogames, movies and virtual-reality goggles—updates of offerings that ignited a short-lived technology craze in the early 1990s.  Three-dimensional simulations enabled by special eyewear are expected to be a key in the this week in San Francisco. While Microsoft is expected to unveil DirectX 12 a new report suggests the Redmond software giant may have something to unveil in the ‘3-D’ space as well.  The Wall Street Journal reports: Microsoft has also developed 3-D virtual-reality devices, people familiar with the project say, and it has filed at least one patent for it so far. The software company has been developing the technology concurrently with a project known as “Fortaleza,” or “fortress” in Portuguese. The effort has been discussed as an attempt at creating a suite of experiences unique to Microsoft’s Xbox products, people who have been privy ...

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