Using camera RTT with postprocess may stretch the scene while resizing the canvas

Questions
1

I’m implementing a side-by-side stereo effect by col with three cameras，here‘s the demo：

it work well on my stereophonic 3d led screen.

but when resizing the canvas， the canvas content was stretched and not working as usual.
normal:

1
11151×1194 23.4 KB

stretched:

2
21776×1233 31.6 KB

how to solve this problem

2

Welcome aboard!

You need to resize your RTTs when the window is resized:

3

WoW!! thanks a lot