I dunno about broke, if they had backported the DirectX stuff to XP there would not have been a breakage. But MS tried to use DX10 as an upsell of Vista, thus m

I dunno about broke, if they had backported the DirectX stuff to XP there would not have been a breakage. But MS tried to use DX10 as an upsell of Vista, thus making DX9 the last directX version on XP. What we ended up with was a whole host of game engines that stuck with DX9 to try to reach the largest possible market.