Various embodiments employ a graphics tiering approach that utilizes
multiple different tiers, each of which defines how a user interface is
presented to a user. In accordance with at least some embodiments, a
higher end tier is provided and utilizes a combination of both bitmaps
and realtime window geometry computations to provide a user interface
that can include both transparent and blurred user interface elements. In
addition, at least some additional tiers repurpose the higher end tier by
incorporating an opaque element behind the transparent element to satisfy
the limitations associated with the additional tiers.