[Gimp-user] How to create a live filter (e.g. drop shadow)

[AgeOfAsparagus <forums gimpusers com>]

HI!

Is there a way to create a live/active drop shadow filter, that changes when the
layer it is acting on also changes?

For example, If I have an empty layer with this "live" filter active on it
(whether it's part of a layer group or the layer above or some sort of bump map
thingy), then when I draw one the empty layer the drop shadow would
automatically be applied to whatever the current state of the layer is?

-- 
AgeOfAsparagus (via www.gimpusers.com/forums)