code: func VertexArrayAttribFormat(vaobj uint32, attribindex uint32, size int32, xtype uint32, normalized bool, relativeoffset uint32) {
  	syscall.Syscall6(gpVertexArrayAttribFormat, 6, uintptr(vaobj), uintptr(attribindex), uintptr(size), uintptr(xtype), boolToUintptr(normalized), uintptr(relativeoffset))
  }
docs: // specify the organization of vertex arrays