12-25-2016, 08:27 PM
You deserve an answer, but this being a new-ish forum not many game players around.
I know nothing about Unity and their requirements.
Looking at your reference, it takes an image from-this-to-this http://imgur.com/53peGRZ in PS using some sort of PS action file that is never going to work in Gimp.
There is a similar 'dilate' or 'erode' in Gimp but not using transparency. example
With transparency: http://imgur.com/6E8Vtex
transparency removed: http://imgur.com/yem0jDW
using Filters -> Generic -> Erode to shrink lighter areas: http://imgur.com/OTh3ZMn
and color-to-alpha to remove the white: http://imgur.com/G1OCpP1
A little like the the PS procedure. (but not much)
However, I do not think that is your problem
That indicates you have no anti-aliasing in your image
You might get a sensible answer if you post an example of your sprite / sprite-sheet, (zip it if required) and details of the image format, OS / version of Gimp.
I know nothing about Unity and their requirements.
Looking at your reference, it takes an image from-this-to-this http://imgur.com/53peGRZ in PS using some sort of PS action file that is never going to work in Gimp.
There is a similar 'dilate' or 'erode' in Gimp but not using transparency. example
With transparency: http://imgur.com/6E8Vtex
transparency removed: http://imgur.com/yem0jDW
using Filters -> Generic -> Erode to shrink lighter areas: http://imgur.com/OTh3ZMn
and color-to-alpha to remove the white: http://imgur.com/G1OCpP1
A little like the the PS procedure. (but not much)
However, I do not think that is your problem
Quote:.. have problem in Unity with sprites and transparent backgrounds. They have jagged edges...
That indicates you have no anti-aliasing in your image
You might get a sensible answer if you post an example of your sprite / sprite-sheet, (zip it if required) and details of the image format, OS / version of Gimp.