I need help wrapping a bitmap image around the window- what is supposed to happen is as it moves to the right and goes off screen, it reappears on the left side as if wrapped around. HELP! 
Draw it manually on each side when it reaches one of the edges.
more specifically …
use 2 quads and “link” their relative positions so that the second quad (with the same image) starts to appear as the other one starts to move offscreen …
try it with 2 pieces of paper to see what you need to do …
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