[Bug 2398] OpenGL is only used on top level windows so child windows get overdrawn

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2398

------- Additional Comments From [e-mail]  2006-21-12 10:04 -------
Works fine with NVIDIA 1.0-9631 on xserver-xorg 7.1.0-7.
> From what I can tell the difference is that glXSwapBuffers honours glViewport

using the NVidia driver (along with its gl libraries) but it's not necessarly
honoured by other drivers. I need to investigate a bit further ...