2. What is DirectX?
DirectX is built by Microsoft as a collection of API’s (Application Programming Interfaces) for the purpose of multimedia processing.
Basically it’s a technology which is helpful in creating special visual and audio effects while playing games.

3. DirectX Architecture The Graphics Device Interface (GDI) is a
Windows API and core OS component
responsible for representing graphical
objects and transmitting them to
output devices such as monitors and
printers.

4. DirectX Components DirectXGraphics
DirectDraw - A software interface that provides direct access to display devices while maintaining compatibility with the GDI and for transferring video processing from a PC's CPU to the video adapter.
Direct3D - An API for manipulating and displaying three- dimensional objects. Developed by Microsoft, Direct3D provides programmers with a way to develop 3-D programs that can use whatever graphics acceleration device is installed in the machine.

5. DirectX Components
DirectInput - provides advanced input for games and processes input from joysticks as well as other related devices including the mouse, keyboard, and force-feedback game controllers.
DirectPlay - supports game connections over a modem, the Internet, or LAN. DirectPlay simplifies access to communication services and provides a way for games to communicate with each other, independent of the protocol, or online service. 

6. DirectX Components DirectXAudio
DirectSound - provides a link between programs and an audio adapter's sound mixing, sound playback, and sound capture capabilities. DirectSound provides multimedia software programs with low-latency mixing, hardware acceleration, and access to the sound device.
DirectMusic - In combination with DirectSound, DirectMusic provides a complete solution for playing music and sound effects in games and other applications.

7. DirectX Components DirectShow
An architecture for streaming media on a Windows platform.
It provides high-quality capture and playback of multimedia streams. Screen Saver, Camera, etc.
DirectSetup
Extremely simple library of functions for installing DirectX on a machine. It also provides a way to check the version of DirectX that is present.

8. Version History DirectX 1.0 – Released in late 1995
DirectX – Windows 95 to Windows 98
DirectX Windows CE, introduced 2 new SDKs (DirectX SDK & DirectX Media SDK)
DirectX 7+ - Windows Me, Media SDK merged into DirectX API, DirectX Media deprecated
DirectX 8+ - Windows XP & Xbox, DirectDraw & Direct3D merged into DirectX Graphics API
DirectSound and DirectMusic merged into DirectX Audio API
DirectX 9+ - Windows XP SP2 & Xbox 360; High Level Shader Language (HLSL) • DirectX Windows Vista – biggest ever update, no backwards compatibility
DirectX Windows 7, Win 8, Win 8 RT, Win 8.1

9. DirectX 12 Goal – Achieve “console – level efficiency”
Integration across all Microsoft devices – phones, tablets, laptops,
desktops & Xbox
Lower level of hardware abstraction  improved multithread scaling &
CPU utilization
50-70% improvement in CPU utilization & performance
Support for over 70% currently existing video hardware
Visual richness through a significant decrease in API-related CPU
overhead
Synchronization across all Windows platforms

10. THANK YOU