Post by Internet Janitor in Problems with nearest-neighbor scaling?

Viewing post in Problems with nearest-neighbor scaling?

I'm not observing the problem you describe with `canvas.scale[]`; Are you using native-decker, or web-decker? Can you provide a minimal example which reproduces the issue?

The 1-bit patterns are "logical colors" and are intended to remain the same when images are stretched/rotated/translated. If you have an image with these patterns on a Canvas widget and you wish to "flatten" them to patterns 0/1, you can use `canvas.invert[]`. Note that this is much more complicated if an image also contains animated patterns and/or color: see the implementation of the pdf module for a more complete solution: https://github.com/JohnEarnest/Decker/blob/main/examples/decks/pdf.deck#L186-L198

Robot Face154 days ago

It happens on native-decker for windows and on web-decker. I'm not at my computer right now, I can strip my project down to a minimal example later today. It's not a canvas which I'm scaling, it's an image interface created by app.render[], if that's relevant.

Robot Face154 days ago

Actually, the version I have up on itch already is pretty minimal if you ignore everything except the "Save card as image" button. If you want to look at it it's https://robotface.itch.io/btcg-card-maker , I set it so you can see it with the password "decker"

Check the v character in the "Level" label in the top left of the card, for example

If you still want a minimal example I can provide that later today

Robot Face154 days ago

Okay, I uploaded a minimal example as "example.deck" at the link I gave you, and I think I also figured out maybe why you weren't seeing it: the artifacts appear at some resolutions and not others. I tried reproducing it with a small canvas, but it worked fine until I made the canvas the same size as my card template.