private void AdvanceSurface()
{
GuiModelSurface s = new GuiModelSurface();
if(_surfaces.Count > 0)
{
s.Color = _surface.Color;
s.Material = _surface.Material;
}
else
{
s.Color = new Vector4(1, 1, 1, 1);
s.Material = idE.RenderSystem.DefaultMaterial;
}
s.IndexCount = 0;
s.FirstIndex = _indexes.Count;
s.VertexCount = 0;
s.FirstVertex = _vertices.Count;
_surfaces.Add(s);
_surface = s;
}