D3D8 Docs

Direct3D (or "Microsoft® Direct3D®" as the docs exclusively refer to it) is the hardware accelerated graphics component of DirectX, which is a pretty large collection of low level libraries for Windows. Documentation for Direct3D 9 is still pretty common, but Direct3D 8 is hard to come by. This page aims to collect all that information in one place.

• DirectX 8 documentation (unofficial mirror)
• Direct3D 9 documentation
• Display driver design guidelines
  • Direct3D Shader Codes - Essential to understand compiled/assembly VS and PS shaders.

Direct3D 8 headers:

• You can get the D3D8 headers from older versions of the DirectX 9 SDK.
• apitrace also maintains copies here

DirectX 8 SDK (including headers and original CHM docs):

• 8.1 Full - The full final DirectX 8 SDK with docs.
• 8.1b
• 8.1 Extras - (Includes Japanese docs, DX7 word docs, PDBs, 3ds Max/Maya Tools)
• 8.0a
• 8.0

You can generate HTML from chm docs using archmage and probably other tools.