opengl32: Correctly size and position opengl child windows

Willie Sippel willie at
Wed Oct 11 16:42:16 CDT 2006

Am Freitag, 6. Oktober 2006 18:09 schrieb Willie Sippel:
> Am Freitag, 6. Oktober 2006 15:26 schrieb Ulrich Czekalla:
> >  From our discussions at wineconf we concluded that overriding the
> > various functions such as glViewport and glScissor will get us there for
> > most applications.
> >
> > The only thing this will not do is handle the case where a child window
> > overlaps a opengl child window. In this case the best solution is to use
> > a glX extension that would allow us to provide a clip region to clip the
> > overlapping child windows. The big question is this really necessary. 
> > How many applications make use of this? I don't know the answer.
> I'd test your patch myself, but OpenGL in Wine is completely broken for me
> for a few weeks now, and I have no idea how to fix it (D3D works just fine,
> though)...
OK, just tested your patch with DAZ|Studio - quite an improvement! A few 
graphic glitches, like a disappearing menu bar (basically any part of the 
main window _except_ for the OpenGL viewport disappears randomly - you can 
still click on the buttons, but you can't see them). But I didn't notice any 
problems with floating (overlapping) child windows, they don't disappear and 
seem to work pretty much as expected!? It's a little sluggish, but I can't 
tell if that's due to your patch, or maybe DAZ|Studio really is that slow. 

Anyway, once the glitches I mentioned are sorted out and this patch gets 
committed, quite a few Wine users should be very happy!


Willie Sippel

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