public void DrawInstancedTriangles(string objectName, int triangleCount, int instanceCount)
{
if (!_objectsHandleDictionary.ContainsKey(objectName))
{
throw new ApplicationException("Object must be added to the renderer before drawing");
}
GL.BindVertexArray(_objectsHandleDictionary[objectName].ObjectHandle);
GL.DrawElementsInstanced(BeginMode.Triangles, triangleCount, DrawElementsType.UnsignedInt, IntPtr.Zero, instanceCount);
}