directx9官方,DirectX5

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Heres a breakdown of getting DirectX 9 and understanding DirectX 5:

1. DirectX 9 (Official):

No Longer Separate SDK: Microsoft hasnt offered a downloadable, full standalone SDK (Software Development Kit) installer for DirectX 9 for many years. Development shifted to newer versions integrated into modern Windows SDKs.

Runtime is Part of Windows: The core DirectX 9 runtime (the components needed to run games/apps using DX9) is built into Windows 10 and 11. It receives updates via Windows Update.

Legacy Redistributable (For Older OSes & Missing Files): If you need DX9 components on a very old OS (like XP, Vista, or sometimes Win7) or if a specific game/app complains about missing DX9 DLLs (`d3dx9_xx.dll`, `xinput1_3.dll`, `xactengine.dll`, etc.), you can install the DirectX End-User Runtime:

Official Download: [Microsoft Download Center: DirectX End-User Runtimes (June 2010)]

What it Does: This installer checks your system for the very specific legacy DirectX 9.0c runtime libraries (like the D3DX9 helper library, XInput 1.3, XACT, etc.) used by older games. It does NOT install the entire DX9 runtime core – thats part of Windows. It only adds missing legacy helper libraries.

When to Use: Primarily when an older game fails to start citing a missing `d3dx9_xx.dll`, `xinput1_3.dll`, or similar file. Running this installer often fixes that.

2. DirectX 5:

Extremely Obsolete: Released in 1997, DirectX 5 is ancient history in software terms.

No Official Support: Microsoft hasnt supported or distributed DirectX 5 for decades. It predates modern Windows releases (Win10/Win11).

Not Available: There is no official download source for DirectX 5 installers from Microsoft. Any site claiming to offer it is highly suspicious and likely distributing malware or abandonware illegally.

Why You Might See It: You might find DirectX 5 mentioned only in the context of:

Very old game requirements (mid-to-late 90s games).

Historical discussions about graphics APIs.

Extremely outdated system documentation.

Running DX5 Software: Running software requiring DX5 on modern Windows (10/11) is highly problematic. Your best bets are:

Virtual Machine: Run an old OS (like Windows 98) with DX5 installed within a VM (VirtualBox, VMware).

Source Ports/Remakes: Look for modern recreations or source ports of the old game that use newer APIs.

Emulators: DOS games requiring DX5 might run better under DOS emulators like DOSBox.

Wrappers (Risky & Complex): Tools like dgVoodoo 2 might attempt to translate old DX5 calls to DX11/12, but success is not guaranteed and requires significant technical tinkering.

Key Takeaways:

For DirectX 9: You dont usually need to install anything. The core is built into Windows 10/11. Use the June 2010 End-User Runtimes only if an old game complains about missing specific DLLs like `d3dx9_43.dll`.

For DirectX 5: Forget about finding an official installer. Its unsupported and unavailable. Focus on running the old software requiring it within a period-correct virtual machine or finding modern alternatives/ports. Avoid any download claiming to be DX5.