[DirectX 2 Programmer's Reference] Software Emulation (79.1666666666667%)

DirectSound > Overview > Object Types

[DirectX 5 Programmer's Reference] Software Emulation (51.6153381642512%)

DirectX Foundation > DirectDraw > DirectDraw Architecture

[DirectX 6 Programmer's Reference] Software Emulation (51.6153381642512%)

DirectX Foundation > DirectDraw > DirectDraw Architecture

[DirectX 7 Programmer's Reference] Software Emulation (44.8693064182195%)

Microsoft DirectX 7.0 > DirectDraw > DirectDraw Architecture

[DirectX October 2006 Documentation] Software Shaders (34.1919191919192%)

DirectX Graphics > Direct3D 9 > Reference > Asm Shader Reference

[DirectX 5 Programmer's Reference] Software versus Hardware (27.7680093776641%)

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