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View Thread: WGF / Windows Graphics Foundation & DX chat transcription
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    Anandtech WinHEC wrapup article has some interesting info regarding  WGF 1.0 (DX 9.L?) / WGF 2.0 ("DX10")

    it was stressed that Microsoft doesn't want software developers to have to cater to multiple hardware paths in order to get good performance. In fact, they went so far as to say that they wanted a tight enough spec so that WGF 2.0 hardware would all support the same features implemented in the same way. Foreshadowing this, all capability bits have been eliminated from WGF 2.0 (meaning that either hardware will or will not support exactly the same set of functions as all other WGF 2.0 hardware).