Premultiplied alpha in sprites?

[mrkarate]

I’m having some problems working with sprites. Here i’m pointing to a sprite of a perfectly white circle against a white background from a texture atlas in PNG with no compression, but I see dark edges on the border of the circle.

When working with textures in 3d modes I can solve this type of problems unchecking the Premultiplied alpha option in the opacity section of the material, but I don’t have that option when working with sprites.

Any ideas?

Thanks in advance

[yaustar]

Artifacts on our 2D assets

Looking at the hair example, this is the issue here: [image] So let’s download it and get it into GIMP. Once loaded into GIMP, change to RGB mode: [image] Go to the channels tab here: [image] And toggle Alpha channel off. This means that we will only edit the other channels RGB: [image] If we hide the Alpha channel, you can see there the pixels that transparent on that edge are white hence the white artifact when rendering with linear filtering: [20200920-2230] To fix this, we can us…

[mrkarate]

Thanks Yaustar, this helped me find a solution using Photoshop.

I duplicated the RGB layer to create a new alpha channel. Then I applied a 1-pixel Stroke (set to Outside) on the RGB layer. That slightly extruded the image while keeping the alpha channel at its original size, and fixed the issue.