[DirectX 7 Programmer's Reference] Viewport Scaling (25.1336898395722%)

Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Direct3D Immediate Mode Essentials > Geometry Pipeline > Viewports and Clipping

[DirectX 8.1 C/C++ Programmer's Reference] Viewport Scaling (25.0286478227655%)

DirectX 8.1 (C++) > DirectX Graphics > Programmers Guide > Using Direct3D > Viewports and Clipping

[DirectX 8.1 Visual Basic Programmer's Reference] Viewport Scaling (25.0286478227655%)

DirectX 8.1 (Visual Basic) > DirectX Graphics > Programmers Guide > Using Direct3D > Viewports and Clipping

[DirectX 7 Programmer's Reference] Viewport Rectangle (23.7448009506833%)

Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Direct3D Immediate Mode Essentials > Geometry Pipeline > Viewports and Clipping

[DirectX 8.1 C/C++ Programmer's Reference] Viewport Rectangle (23.6397589338766%)

DirectX 8.1 (C++) > DirectX Graphics > Programmers Guide > Using Direct3D > Viewports and Clipping

[DirectX 8.1 Visual Basic Programmer's Reference] Viewport Rectangle (23.6397589338766%)

DirectX 8.1 (Visual Basic) > DirectX Graphics > Programmers Guide > Using Direct3D > Viewports and Clipping

[DirectX 6 Programmer's Reference] Viewport Scaling (20.6507034632035%)

DirectX Foundation > Direct3D Immediate Mode > Direct3D Immediate Mode Essentials > The Geometry Pipeline > Viewports and Clipping > Clipping Volumes