Skins using incorrect transparent pixels show artifacts

[enoslayd]

Describe the bug: there are artifacts on followpoints. in the screenshots, in stable, it appears as circles, even zoomed in. in lazer master, the followpoints appears like diamond and if zoomed in, theres something on its edge and on its latest release, it is much worse with a black border around. doesnt happen on classic and default skin and i cant test other skins since i dont have many skins installed.

Edit: on a closer look, both lazer versions has black border on it
Edit2: im retarted, i forgot that the black border is part of the followpoint. although the artifacts on the edges is not

Screenshots or videos showing encountered issue:
Lazer (master):

Lazer on 2020.1031.0:

stable:

osu!lazer version: master after the spinner clear pr merged

skin: https://github.com/enoslayd/outline-skin the folder outline is the skin

Logs:
performance.log
runtime.log
database.log
network.log

[peppy]

@smoogipoo wanna check on this? may be related to the recent pooling prelim merges.

[enoslayd]

@smoogipoo wanna check on this? may be related to the recent pooling prelim merges.

Dunno bout pooling but it also happens on much older version (i tested a june 2020 version, just forgot the - specific one)

[bdach]

This is most likely a texture sampling artifact as the assets look fine - although the @2x one is a little bit funny as its R/G/B channels look like so:

I did try to fix it up but it seemed to yield no results, unless I screwed it up.

[bdach]

I was indeed doing it wrong. The following asset will look correctly (provided github doesn't mangle it):

What I've done is I've set the r/g/b components of the white pixels shown above to 0 (were 255). If this is to be fixed on our side, it'll have to be in framework.

[enoslayd]

i just realized that the followpoint on github link is a little bit different on what is in my skin on my stable and lazer. i updated it just now.

[peppy]

As mentioned in #10738, this is an issue with the skin textures.

Stable fixes incorrect transparent values in textures, lazer doesn't. Your skin has pixels which are (255,255,255,0) aka transparent white. which is showing up in interpolation.