enum OdOpenGLAffection { OdOpenGLAffection_Attributes = 0x01, OdOpenGLAffection_Colors = (0x01 << 1), OdOpenGLAffection_Materials = (0x01 << 2), OdOpenGLAffection_Arrays = (0x01 << 3), OdOpenGLAffection_Geometry = (0x01 << 4) };