[Bug 25912] Google SketchUp 7/8 one mouse event behind with binary drivers from Nvidia

https://bugs.winehq.org/show_bug.cgi?id=25912

--- Comment #49 from Ruslan Kabatsayev  ---
I'd like to note that I've tried avoiding the Qt dependency, but when I tried
using GLUT or even plain WGL API, I failed to reproduce the problem — in both
these case the updates are as expected.

Also, if I add a call to swapBuffers() after glEnd(), the problem doesn't
reproduce. But as the Qt docs say, swapBuffers() is already called by default
by the caller of paintGL(), so this "fixing" call is extraneous.