ID:2653828
 
Resolved
Icon particles were drawn at incorrect positions, causing artifacting at their edges.
BYOND Version:514.1546
Operating System:Windows 10 Home 64-bit
Web Browser:Chrome 88.0.4324.146
Applies to:Dream Seeker
Status: Resolved (514.1547)

This issue has been resolved.
Descriptive Problem Summary:



Particles that use icons appear blurred and sometimes seem to have various transparency issues (transparent parts appear black)

Numbered Steps to Reproduce Problem:

1. Create any particle using an icon.
2. Behold.

Expected Results: Particles will not be blurred.

Actual Results: They are very blurred.

Occurs in all versions with particles.

Demo has been sent privately. A way to specify point sampling would be good, assuming particles don't just inherit the flags of whatever they are attached to.

Lummox JR resolved issue with message:
Icon particles were drawn at incorrect positions, causing artifacting at their edges.
Descriptive Problem Summary: Particles with icons are not actually centered, they are offset somewhat for whatever reason.

Numbered Steps to Reproduce Problem:

1. Create any particle that uses an icon.
2. Make the size of the particle area the same size as the icon to make this obvious.

Workarounds:

This will actually center them.
position = list(-1,1)

https://filebin.net/5lx1f7zwefzfagps/ particlecentered.zip?t=xtk4gyzj

I ended up checking this on my own test project after fixing a number of other bugs, and it turns out this issue was related to the icon blurring, so it's already been resolved.
Particles are still blurred and messed up if they're attached to an atom without an icon.
That sounds like it'll need a new big report with a separate test case.