[DirectX 2 Programmer's Reference] RGBA_GETALPHA (100%)

Direct3D > Immediate-Mode Reference > Macros

[DirectX 5 Programmer's Reference] RGBA_GETALPHA (83.695652173913%)

DirectX Foundation > Direct3D Immediate Mode > Immediate-Mode Reference > Macros

[DirectX 6 Programmer's Reference] RGBA_GETALPHA (76.1198945981555%)

DirectX Foundation > Direct3D Immediate Mode > Direct3D Immediate Mode Reference > Macros

[DirectX 7 Programmer's Reference] RGBA_GETALPHA (70.8041958041958%)

Microsoft DirectX 7.0 > Direct3D > Direct3D Immediate Mode > Direct3D Immediate Mode Reference > Direct3D Immediate Mode C/C++ Reference > Macros