antialias on flood select tool - affinity photo V2.5.7

[cabidela]

This was broken on one of the last updates. The flood select tool simply does not do antialias any more. Can this please be fixed?

Happens with and without hardware acceleration. I'm using win10

Edited December 11, 2024 by cabidela
added more info on the issue

[NathanC]

Hi @cabidela welcome to the forums & apologies for the late reply,

I've enabled antialias on flood select on a few basic sample images and it appears to be working as expected by introducing semi-transparent pixels along the selection area edges when compared to the hard edges with the option disabled. Can you provide a screen recording and sample file where you have encountered it not working?

 

[cabidela]

Thanks @NathanC I've attached a file that shows where the problem happens. The adjustment layer has a mask created using the flood tool with anti-alias. This used to work fine until two updates ago. Let me know if more info is needed. Cheers

anti_alias_issue.afphoto

[NathanC]

Many thanks, though I've just created two brightness/contrast adjustments and flood-selected the sign object with a tolerance of 1% with AA enabled and then again with AA disabled. The AA setting is having an effect along the border with the pixel border visible on the mask in isolation mode with AA enabled.

AA:

No AA:

As shown, the flood select setting is having an effect on the mask with aliased edges. I've also rolled back Photo 2 to a much earlier version (v2.2.0) and repeated this test to confirm, the output was identical to 2.5.7.

 

[cabidela]

Thanks NatanC for taking time to look into this. It seems that the AA issue happens where the background is transparent (green markers below). When the background is painted, the problem disappears (2nd image further down).