[Bug 12060] Direct3D window is not placed withing its parent window

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=12060

--- Comment #32 from Stefan Dösinger <stefan at codeweavers.com> ---
(In reply to Artem S. Tashkinov from comment #29)

> Yes, they are linked. BTW displacement is seemingly random from invocation
> to invocation. I've now launched it again and the displacement is so huge I
> can only see 10% of the visualization.

But once started up, the displacement stays constant regardless of where the
window is placed?

> > Does the problem also happen when you run winamp inside a virtual desktop?
> 
> What do you mean?

Winecfg->graphics->emulate a virtual desktop

Or wine explorer.exe /desktop=foo winamp.exe

What I want to get to with both questions: At least in ddraw (although reading
from the bug history I guess milkdrop uses d3d9), primary surface coordinates
are screen-relative, not window-relate. So when the app has a window placed at
123x3456 and wants to draw pixel 20x30 inside it, it actually draws pixel
(123+20 x 456+30), and wine sort of undoes this because in GL everything is
window-relative. We might get something wrong there in the way the application
has set up its drawing. Because window placement involves the window manager,
running inside a virtual desktop takes it out of the equation and lets wine do
things on its own.

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