3DMark2000 regression

[Stefan Dösinger]

Hi Dmitry,
Your "Do not play with WS_VISIBLE" 
patch(5ddac44dc2a6637613407fa900d3fafac37e70d8) in wined3d causes a 
regression with 3DMark2000. The rendering in this game is not visible. 
Readding the SWP_SHOWWINDOW flag to the SetWindowPos calls fixes the problem. 
But I have the impression that the main point of your patch was removing this 
flag, so I don't want to just add it again.

What were the reasons for removing the SWP_SHOWWINDOW flag?

Stefan