Viewports and Clipping

This section discusses the last stage of the geometry pipeline: clipping. The discussion is organized into the following topics:

• What Is a Viewport?
• Clipping Volumes
• Viewport Scaling
• Using Viewports

Direct3D implements clipping by way of a COM object representing a viewport's functionality and exposing interfaces to allow you to manipulate the object. The IDirect3DViewport3 interface is the newest interface to the viewport object.