Gabe Newell, President of Valve Software, has said that Microsoft’s choice to limit DirectX 10 to Windows Vista was “a terrible mistake”.

He said that the decision has affected the industry as a whole, as there are only a small percentage of players that can use DirectX 10. At least, that’s the case according to the latest Steam Survey, which has over one million samples.

Only 2.3 percent of users have a DirectX 10 capable PC – i.e. a system with a DirectX 10 graphics card that’s running Windows Vista. In total there are around eight percent of systems in the sample with Windows Vista installed, while over 90 percent of the sampled systems are still running Windows XP.

Apparently, when developing a cross-platform title, developers look for the lowest common denominator. Because DirectX 10 isn’t supported by neither Microsoft’s nor Sony’s latest consoles, developers are apparently reluctant to take it up according to Newell.

[VIA]