Let’s say we want to save resources (uploading less textures, sprite sheets) and time.
We don’t want to play with GIMP, Photoshop or whatever you use.
We have to grab a random decal (Let’s say, a weapon thumbnail) and generate an outline for it, so it looks nice.
Example from The Binding of Isaac: Rebirth
- White outlines only appear when item is fully charged.
- They’re automatically created for the item.
- I’m not fully sure how transparency works there.
It might bring some trouble with transparency, knowing my luck - but let’s think about optional anti-aliasing.
If you guys made glow effect for neons, then a GUI segment could be even simplier!
Let’s remember about borders and other stuff 