This is a plugin that inverts transparency with a color fill and then blurs it to make both a background fill and inner glow combined. In simple terms it renders a fill expected on the background layer below on layers above.

Please imagine a three layer setup based on the image provided
Layer 3: a turtle removed from the background (duplicate)
Layer 2: a turtle removed from the background
Layer 1: the turtle with the background



Apply the effect on layer 3 and make sure to take advantage of the image upload feature that currently only works in Gimp 2.10. Layer 3 is above all other layers, that is what gives it the name "background on top"


Download here


https://github.com/LinuxBeaver/Gimp_Bac ... yer_on_top


Location to put binaries

Windows

C:\Users\(USERNAME)\AppData\Local\gegl-0.4\plug-ins

Linux

/home/(USERNAME)/.local/share/gegl-0.4/plug-ins

Linux (Flatpak includes Chromebook)

/home/(USERNAME)/.var/app/org.gimp.GIMP/data/gegl-0.4/plug-ins


Then Restart Gimp and go to GEGL Operation and look for "Background on top"
If you use Gimp 2.99.16+ it will be under filters>Light and Shadow but 2.99 WILL NOT work with the image file upload feature.


So yeah, this plugin is really interesting because it is a mix between a background fill and an inner glow effect. Feel free to talk about it or do whatever you want with it in the comments section.