[DirectX 8.1 C/C++ Programmer's Reference] Volume Envelope Effect (17.6255829956419%)

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[DirectX 8.1 C/C++ Programmer's Reference] Volume Property (16.9612068965517%)

DirectX 8.1 (C++) > DirectShow > DirectShow Reference > MSWebDVD ActiveX Control > MSWebDVD Object

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DirectX 8.1 (C++) > DirectX Graphics > Programmers Guide > Using Direct3D > Textures

[DirectX 8.1 Visual Basic Programmer's Reference] Volume Texture Resources (15.8957548536656%)

DirectX 8.1 (Visual Basic) > DirectX Graphics > Programmers Guide > Using Direct3D > Textures