Introduction to DirectX

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Introduction to DirectX
????? ???? http//debut.cis.nctu.edu.tw/ching
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Introduction

• Microsoft DirectX is a set of low-level API for
  creating games multimedia applications
• 2D, 3D, sound effect and music, input devices and
  network application

multiplayer games
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DirectX Components

• DirectX Graphics
• a API that combines DirectDraw Direct3D
• DirectInput
• for variety of input device
• DirectPlay
• multiplayer networked games
• DirectSound
• play and capture waveform audio

force-feedback technology
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DirectX Components

• DirectMusic
• Solution of musical and non-musical soundtracks
• DirectShow
• capture and playback of multimedia streams
• DirectSetup
• one-call installation of the DirectX components
• DirectMediaObject
• writing and using data-streaming objects

for video audio codec
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DirectDraw ?????
??????
???2D ?? ??? bitmap
GDI ???????, curves font, text ?
?????? DirectDraw, ??? HEL
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1
????????
Display Driver ?? ?????? DirectDraw ?? bit
??, DirectDraw ???? ?? ?????
http//msdn.microsoft.com/library/default.asp?url
/library/en-us/graphics/hh/graphics/ddraw_692bb5b3
-4ebd-4f1f-9bd1-c9970f2e3d4c.xml.asp?frametrue
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Direct3D ?????
??????? ???????
http//msdn.microsoft.com/library/default.asp?url
/library/en-us/directx9_c/directx/graphics/program
mingguide/gettingstarted/architecture.asp
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DirectSound ? DirectMusic
??????
??
??

• DirectSound ? DirectMusic ??????? DirectX
  Components
• ?????????. (?? play .wav)
• ???, DirectMusic ????????? wave ?? DirectSound ??
• DirectMusic ???????????
• Play Midi, ?????? audio source, ?? 3D ??

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???????
??????
Functionality DirectMusic DirectSound
?? wave ? Yes Yes
?? MIDI ? Yes No
?? DirectMusic Producer ?? Yes No
??????????? Yes No
??? Downloadable Sounds (DLS) Yes No

???????? Yes Yes
DLS ?? wave-table ???????? samples ????.
???????????, ??? MIDI ??? ????
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Download DirectX SDK
http//msdn.microsoft.com/library/default.asp?url
/downloads/list/directx.asp
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How to Build C Samples

• ??? DirectX SDK
• Sample ?????? DirectXHome\Samples\C?

???????, ?VC??????
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?????????

• ?????? video capture ???

2
?????
1
????? project
3
????
????? Visual Studio .Net ??? Visual Studio 6
??????
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• End