public void GradientLine(int x1, int y1, int x2, int y2, ColorInstance col1, ColorInstance col2)
{
Vertex[] _verts = new Vertex[2];
_verts[0] = new Vertex(new Vector2f(x1, y1), col1.GetColor());
_verts[1] = new Vertex(new Vector2f(x2, y2), col2.GetColor());
_myBatch.AddVerts(_verts, 2, PrimitiveType.Lines);
_changed = true;
}