QSurfaceDataItem
clone()
final QSurfaceDataItem
itemAt(int rowIndex, int columnIndex)
itemAt(QPoint position)
final void
assign(QSurfaceDataItem other)
setItem(int rowIndex, int columnIndex, QSurfaceDataItem item)
setItem(QPoint position, QSurfaceDataItem item)
QSurfaceDataItem(QSurfaceDataItem other)