[DirectX 6 Programmer's Reference] Billboard Sample (68.5945483466692%)
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[DirectX 8.1 C/C++ Programmer's Reference] Billboard Sample (41.9412175841126%)
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[DirectX 8.1 Visual Basic Programmer's Reference] Billboard Sample (41.9412175841126%)
DirectX 8.1 (Visual Basic) > DirectX Graphics > Programmers Guide > Samples