IRIX use vector-based icons. A number of vector-based icon sets are also available for window managers such as GNOME and KDE. With Windows, applications built using Windows Presentation Foundation (which is native to Windows Vista, but can be downloaded for Windows XP and Server 2003) are vector-based and scale losslessly based on Windows DPI settings. However, even without this, it has always been possible to build applications to be DPI-aware. Additionally, in Vista, the Desktop Window Manager detects when an app is not DPI aware and, if the computer is set to a different DPI than normal, uses bitmap scaling to render the window at a larger size. New version of AmigaOS 4.1 enhanced in 2008 its Workbench with 2D vector graphical interface based on Cairo libraries, but pragmatically integrated it with a 3D Compositing Engine based on Porter-Duff Routines. See also Sun Microsystems' NeWS (Network extensible Window System) DPI Resolution independence References Computer graphics