I came across the “Difference” blend mode and it’s pretty cool. It can be used to identify differences between two layers.
But this seems to break down when there are transparent pixels on the layers. The example below is just a single layer copied, and the “Difference” blend mode is selected for the top layer.
Are there any transparent-pixel-aware blend modes that can detect differences?
The Subtract blend mode can be useful for that but the result depends on the order of the two layers.
I don’t know how well it handles transparency.
@Eel_Dodg it would be great if you explained better what’s the problem, maybe sharing the example kra file because for the screenshot alone I’m not sure if it is that you just don’t like the result or if there is a real bug.
Also it is not clear what do you mean with transparent-pixel-aware, how is the alpha supposed to be used in the blending?
Color blend modes only mix the color components without knowledge of alpha values, then that mix is more or less present on the final result depending on how opaque the pixels are, the more opaque, the more visible is the color blend mode. Don’t know if that helps.
In case you haven’t so far, maybe you’ll take a look in our manual, where most of the blending modes are described?
Michelist
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