Where can I find the code used for surface blur in GIMP source code?
Is there any info besides from the source that tells me how all of the 5 options of GIMP High Pass mode works?
I plan to implement those two into Krita. Part of 2 has been almost done with nondestructive support. I’ll be able to do #1 as a filter mask/filter layer.
Bonus options, a way to replicate PS vibrance.