[DirectX 8.1 Visual Basic Programmer's Reference] rsq (100%)

DirectX 8.1 (Visual Basic) > DirectX Graphics > Reference > Vertex Shader Reference > Instructions

[DirectX October 2006 Documentation] rsq - vs (46.2938963210702%)

DirectX Graphics > Direct3D 9 > Reference > Asm Shader Reference > Vertex Shaders > Vertex Shader Instructions

[DirectX October 2006 Documentation] rsq - ps (41.320652173913%)

DirectX Graphics > Direct3D 9 > Reference > Asm Shader Reference > Pixel Shaders > Pixel Shader Instructions