Hi, I am getting a weird problem when trying to render multiple layers in my sprite engine. When I am standing still or moving horizontally, everything looks fine. When I move vertically, it displays feint black horizontal lines where the tiles are divided. Here is a screen shot trying to demonstrate it. I did not render ground terrain to try and demonstrate it better. The white lines are drawn about where the feint black lines would appear (its really every 64ish pixels, the separation of a tile). The ground tiles all render fine, and never have these issues. My guess is that something is getting cut off as I move vertically and its causing an error in the alpha blending.