1. Managed DirectX
Joe Gavin

2. About DirectX Introduced in 1995
Provides an interface between software and hardware
Allows software to use hardware acceleration
Constantly updated for new hardware and technologies

3. Managed DirectX Interfaces
Direct3D
DirectDraw
DirectPlay
DirectSound
DirectInput
AudioVideoPlayback

4. Direct3D
Object to be drawn
Environment
Camera
Lighting

6. DirectDraw
Works with older hardware when only 2D images are being displayed
Works with two surfaces
Primary Surface
Back Buffer
Draw to the back buffer and
Then flip it with the primary surface

8. DirectPlay Used for multiplayer gaming
Allows programmers to use whatever network connections a computer has to send and receive game data from other players
Offers prebuilt functionality to go
on top of a connection

9. DirectSound Allows for advanced control of sounds to be played back
Sounds can be located in a
specific 3D location
Sounds can change when the
source or the listener moves
Gives control over properties like
pan and frequency

10. DirectInput Used to get input from the user Can be set up in two ways
Polling loop
Implemented in the main code loop
State of input is checked with every frame render
Event loop
One thread keeps track of the state of the
device and when it changes it raises an event
Main application listens for the events

11. AudioVideoPlayback
Designed to be a simple to use interface that will play video and sound
Very easy to use but lacks the advanced controls of DirectSound
Allows videos to be very easily integrated into programs.

12. Questions?