DirectX 9.0 is the latest evolution of the Microsoft 3D graphics technology for Windows. Direct3D, a major component of the DirectX Graphics subsystem, has evolved so rapidly in the last few years that the underlying programming paradigm has changed quite a bit from its origin. This article introduces the fundamental concepts of the unmanaged Direct3D architecture and illustrates how the managed Direct3D layer abstracts the unmanaged layer. Also, the author describes the Geometry, Texture, Device, and other classes and uses code from the Samples SDK.
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