You made the depth sharpening shader which allows to control back- and foreground independently. If you could update this one to similar, that would be awesome.
Also, I assume you know that depth is calculated in planar coordinates which causes the depth based effects being further away in the edges of the screen. If those coordinates could be changed to polar coordinates, the result would look even more gorgeous. This question applies to the sharpen effect too.
But no fuss..it's already awesome!
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