Upleft: 		Upright:		Downleft:		Downright:
2 pixels upleft		2 pixels up, 1 right	1 pixel down, 2 left	1 pixel downright
1 pixel  upleft		1 pixel upright		1 pixel downleft	1 pixel downright
1 pixel  upleft		1 pixel upright		1 pixel downleft	1 pixel downright
1 pixel  upleft		1 pixel up, 2 right	2 pixels down, 1 left	2 pixels down, 2 pixels right
Repeat			Repeat			Repeat