(06-25-2023, 12:24 PM)Meitheal Wrote: OK, so while working on something unrelated involving transparency, I believe I have found the cause. The image I was working with had semi-transparent pixels along the edges that I was unaware of, and stacking two semi transparent pixels on top of one another causes them to fill each other in and look less transparent, this is why hiding one of the identical layers caused the image to change. What proves this is that changing which of the two layers is on top does not change how the image looks, so they are in fact identical.
Yes, when you stack glass panes you discover than glass isn't 100% transparent either
Otherwise, pretty well explained on Wikipedia