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

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

--- Comment #213 from Roderick Colenbrander   2007-12-15 05:04:35 ---
According to Stefan Dosinger, Valve Hammer has a different kind of problem. It
renders to an oversized backbuffer and copies portions of it back to the main
window. So it is something else.