[DirectX 7 Programmer's Reference] Filter Sample (22.0227121764768%)

Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Direct3D Immediate Mode Tools and Samples > Direct3D Immediate Mode C++ Samples

[DirectX 6 Programmer's Reference] Filter Sample (21.5500293691037%)

DirectX Foundation > Direct3D Immediate Mode > Direct3D Immediate Mode Samples

[DirectX October 2006 Documentation] Filter (15.4002926421405%)

DirectX SDK > Introducing DirectX 9.0 > Namespaces > Microsoft.DirectX.Direct3D > Enumerations