///<summary> A set of rectangle indexes of reccount rectangles, with a restart after each rectangle, in short indexes </summary>
public void CreateRectangleElementIndexUShort(GLBuffer elementbuf, int reccount, uint restartindex = 0xffff)
{
ElementBuffer = elementbuf;
ElementBuffer.FillRectangularIndicesShort(reccount, restartindex);
ElementIndexSize = DrawElementsType.UnsignedShort;
DrawCount = ElementBuffer.Length - 1;
}
