direct x & open al free download
Microsoft DirectX is a collection of application programming
interfaces (APIs) for handling tasks related to multimedia, especially game
programming and video, on Microsoft platforms. Originally, the names of these
APIs all began with Direct, such as Direct3D, DirectDraw, DirectMusic,
DirectPlay, DirectSound, and so forth. The name DirectX was coined as a
shorthand term for all of these APIs (the X standing in for the particular API
names) and soon became the name of the collection. When Microsoft later set out
to develop a gaming console, the X was used as the basis of the name Xbox to
indicate that the console was based on DirectX technology.[1] The X initial has
been carried forward in the naming of APIs designed for the Xbox such as XInput
and the Cross-platform Audio Creation Tool (XACT), while the DirectX pattern
has been continued for Windows APIs such as Direct2D and DirectWrite.
Direct3D (the 3D graphics API within DirectX) is widely used in
the development of video games for Microsoft Windows and the Xbox line of
consoles. Direct3D is also used by other software applications for
visualization and graphics tasks such as CAD/CAM engineering. As Direct3D is
the most widely publicized component of DirectX, it is common to see the names
"DirectX" and "Direct3D" used interchangeably.
The DirectX software development kit (SDK) consists of runtime
libraries in redistributable binary form, along with accompanying documentation
and headers for use in coding. Originally, the runtimes were only installed by
games or explicitly by the user. Windows 95 did not launch with DirectX, but
DirectX was included with Windows 95 OEM Service Release 2.[2] Windows 98 and
Windows NT 4.0 both shipped with DirectX, as has every version of Windows
released since. The SDK is available as a free download. While the runtimes are
proprietary, closed-source software, source code is provided for most of the
SDK samples. Starting with the release of Windows 8 Developer Preview, DirectX
SDK has been integrated into Windows SDK.[3]
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