All-
Figured I'd drop a pointer a a set of filter wrapper I wrote a while back:
http://registry.gimp.org/node/14256These provide seamless/tile-able versions of a bunch of handy filters that normally "break" a tile-able pattern.
Basically, it enlarger the layer to a 3x3 copy of the original image than runs the filter in interactive mode and crops it back down after, maintaining tile-ability. (thought this does slow the filter processing down as it is working on a much larger image)
IT adds the following:
Filters >Distorts >Tileable Emboss
Filters >Blur >Tileable Motion Blur
Filters >Distorts >Tileable Wind
Filters >Light and Shadow >Tileable Sparkle
Filters >Noise >Tileable Slur
Filters >Noise >Tileable Spread
Filters >Artistic >Tileable Cubism
Filters >Artistic >Tileable Oilify
Filters >Artistic >Tileable Photocopy
Filters >Artistic >Tileable Softglow
-Rob A>