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

[Wine Bugs]

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





------- Additional Comments From willie(a)froq.net  2006-23-04 11:07 -------
OpenGL can draw to either a X window, a GLX pixmap, or a Pbuffer. GLX pixmaps 
and Pbuffers are offscreen. See "Course 24: OpenGL and Window System 
Integration, Siggraph 1997":
http://www.mesa3d.org/brianp/sig97/glxport.htm#Pixmaps
And:
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=man&fnam...

I have no idea if this helps, though. According to the linked article, direct 
rendering is usually not available for GLX pixmaps (but the article is quite 
old, so this might have changed). No idea about Pbuffers. It is possible to 
copy the content of the pixmap anywhere you want, though, as far as I 
understood the docs. 

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