[DirectX 3 Programmer's Reference] Flat (79.1549789621318%)

Direct3D > Retained-Mode Overview > Introduction to Direct3D Retained-Mode Objects > IDirect3DRMWrap Interface

[DirectX 6 Programmer's Reference] Flat Shading (16.3333333333333%)

DirectX Foundation > Direct3D Immediate Mode > Getting Started with Immediate Mode > 3-D Coordinate Systems and Geometry > Shading > Shade Modes

[DirectX 7 Programmer's Reference] Flat Shading (15.3333333333333%)

Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Getting Started with Immediate Mode > 3-D Coordinate Systems and Geometry > Shading > Shading Modes