[DirectX 6 Programmer's Reference] Introducing DirectX 6.1 (86.9565217391304%)
[DirectX October 2006 Documentation] Introducing DirectX 9.0 (57.7639751552795%)
DirectX SDK
[DirectX 7 Programmer's Reference] Introducing DirectX Foundation (54.7619047619048%)
Microsoft DirectX 7.0
[DirectX 8.1 C/C++ Programmer's Reference] Introducing DirectX 8.1 (50.6211180124224%)
DirectX 8.1 (C++)
[DirectX 8.1 Visual Basic Programmer's Reference] Introducing DirectX 8.1 (45.5128205128205%)
DirectX 8.1 (Visual Basic)
[DirectX 8.1 C/C++ Programmer's Reference] Introducing the CTransformFilter and CTransInPlaceFilter Classes (20.8154965753425%)
DirectX 8.1 (C++) > DirectShow > Using DirectShow > Writing DirectShow Filters > Writing Transform Filters > Using the CTransformFilter and CTransInPlaceFilter Transform Base Classes