[Gimp-docs] Options in blur filters

[Julien Hardelin <jhardlin orange fr>]

Hi all,

In several blur filters, we have the options "Use the selection as 
input" and "Use the entire layer as input".

I don't understand well these options. If I test "Use the entire layer 
as input" in Pixelize with a selection, I can see some slight 
differences in result, but I don't find, in result, colors that are in 
the layer outside the selection.

In my mind, in Pixelize, the color of a pixel is the mean of colors in 
the square it belongs to, and "use the entire layer as input" looks weird.

Can you enlighten me on this point?

Julien