Direct X is a set of APIs (application program interfaces) developed by Microsoft. It provides software developers with resources to write Windows-based applications that access hardware features of a computer without knowing exactly what hardware will be installed when the program eventually runs. By using the interfaces provided by DirectX, software developers can take advantage of hardware features without being concerned about the implementation details of that hardware.
The full benefit of DirectX is most evident in PC games. Unlike console gaming machines such as the PlayStation or GameCube, for example, computer game developers are producing a game that needs to be designed to work well on a variety of systems — as opposed to one system that is the same for all end-users.
PC game developers need to ensure that their game will run on any system and include support for a large number of different hardware devices, such as the video adapter and sound card, as well as gaming peripherals such as joysticks and racing wheels. Developers also need to ensure their game will work with hardware products that may not even hit the retail sector until after their game is released.
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