[DirectX 5 Programmer's Reference] Software Emulation (100%)

DirectX Foundation > DirectDraw > DirectDraw Architecture

[DirectX 7 Programmer's Reference] Software Emulation (78.5714285714286%)

Microsoft DirectX 7.0 > DirectDraw > DirectDraw Architecture

[DirectX 3 Programmer's Reference] Software Emulation (51.6153381642512%)

DirectSound > DirectSound Architecture > Object Types

[DirectX 2 Programmer's Reference] Software Emulation (49.3236714975845%)

DirectSound > Overview > Object Types

[DirectX 5 Programmer's Reference] Software versus Hardware (32.4222080136402%)

DirectX Foundation > Direct3D Immediate Mode > Direct3D Immediate-Mode Essentials > Performance Optimization

[DirectX October 2006 Documentation] Software Shaders (29.0700483091787%)

DirectX Graphics > Direct3D 9 > Reference > Asm Shader Reference