///<summary> Given a elementbuffer, fill with indexes from an array. Set ElementBuffer, ElementIndexSize, BaseIndexOffset, DrawCount </summary>
public void CreateElementIndexUShort(GLBuffer elementbuf, ushort[] indexes, int base_index = 0)
{
ElementBuffer = elementbuf;
ElementBuffer.AllocateFill(indexes);
ElementIndexSize = DrawElementsType.UnsignedShort;
BaseIndexOffset = base_index;
DrawCount = indexes.Length;
}
///<summary> Given a elementbuffer, fill with indexes from an array. Drawtype sets the element index size. Set ElementBuffer, ElementIndexSize, BaseIndexOffset, DrawCount </summary>
public void CreateElementIndex(GLBuffer elementbuf, uint[] eids, DrawElementsType drawtype, int base_index = 0)
{
ElementBuffer = elementbuf;
if (drawtype == DrawElementsType.UnsignedByte)
{
ElementBuffer.AllocateFill(eids.Select(x => (byte)x).ToArray());
}
else if (drawtype == DrawElementsType.UnsignedShort)
{
ElementBuffer.AllocateFill(eids.Select(x => (ushort)x).ToArray());
ElementIndexSize = DrawElementsType.UnsignedShort;
}
else
{
ElementBuffer.AllocateFill(eids.ToArray());
ElementIndexSize = DrawElementsType.UnsignedInt;
}
ElementIndexSize = drawtype;
BaseIndexOffset = base_index;
DrawCount = eids.Length;
}