05-26-2021, 09:38 AM
First of all give a screenshot of Gimp with the layers dock showing, something like this. https://i.imgur.com/DYZ6B4c.jpg
If any of the layers are outside the canvas area then enable View -> Show-All just so you can see them. https://i.imgur.com/HsS9F1z.jpg
From a couple of experiments with g'mic, as you found, it will crop off parts of the image according to layer sizes. In this case, best I can suggest is add a large layer that includes all other layers. Even that I think is a bit dodgy. The layer colour does matter and a transparent layer gives strange results. Best I got is with black. https://i.imgur.com/qKNDUZ2.jpg
...but give it a try https://i.imgur.com/U60qiQ3.jpg
My advice, g'mic filters are strange when it comes to transparency, Separate the operations. make a replacement face as a separate image, copy it into the main image and gmic seamless merge it. Keep it simple.
If any of the layers are outside the canvas area then enable View -> Show-All just so you can see them. https://i.imgur.com/HsS9F1z.jpg
From a couple of experiments with g'mic, as you found, it will crop off parts of the image according to layer sizes. In this case, best I can suggest is add a large layer that includes all other layers. Even that I think is a bit dodgy. The layer colour does matter and a transparent layer gives strange results. Best I got is with black. https://i.imgur.com/qKNDUZ2.jpg
...but give it a try https://i.imgur.com/U60qiQ3.jpg
My advice, g'mic filters are strange when it comes to transparency, Separate the operations. make a replacement face as a separate image, copy it into the main image and gmic seamless merge it. Keep it simple.