at my development team we are also trying to get wpf to render on a
d3d surface...if we don't find a way we simply can't use it...that
would be a real pitty!
what we curently are trying to do, is to open a wpf form in background
(behind our fullscreen d3d device), grab the frames rendered to the
desktop (via screenshot methods and/or print methods) and copy them
into texture buffer!
lets see if it works...but we would prefer a cleaner solution provided
by the wpf api itself!
ps: another idea was to steal the surface from the wpf device at low
level on driver
/gpu basis...that would be a real hack!