[xmonad] [OT] background image

[Roman Cheplyaka]

I'm investigating how to make per-workspace backgrounds.
On xmonad side solution is pretty simple using logHook (thanks
#xmonad-ers for hints!)

The other problem is the speed. Currently I use "qiv -z" to update the
background (big jpeg photo) and it takes about 0.7-0.8s.
Preliminary converting it to the size of display (1280x1024) gives
0.3-0.4s. It's still barely acceptable.

So, how can I do better? Does X renders jpeg itself, or qiv converts
jpeg to some other format? Then preliminary converting would also save
the time.

Any suggestions are welcome.

-- 
Roman I. Cheplyaka (aka Feuerbach @ IRC)
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