Merge Bug

[Halex]

Hello guys

I found out a bug in Affinity Photo when I try to merge two layers.

[walt.farrell]

I think you should Rasterize your layer 002 before you do the merge. If you don't, it has a different DPI than the existing layers in the document, and I think that will cause problems.

[Halex]

On 3/10/2024 at 3:22 PM, walt.farrell said:

I think you should Rasterize your layer 002 before you do the merge. If you don't, it has a different DPI than the existing layers in the document, and I think that will cause problems.

Thanks, but the same happens when I rasterize it before merge them.

[SrPx]

I replied to you in the other thread (I think it's related). I might be wrong with my "theories", though.

Edit: And I also agree with what Walt says. But I am not very savvy about how it really works, internally.   

[NotMyFault]

9 hours ago, Halex said:

Thanks, but the same happens when I rasterize it before merge them.

1. You need to activate snapping with option „force pixel alignment“. 
2. the layer will stay sharp as long you keep it on while integer position, and use 90 degree angles or multiples, and do not change layer DPI / size
3. otherwise you need to rasterize the layer once after every change which newly causes blurriness. this will „bake in“ the blurriness from layer misalignment.

 

[Halex]

On 3/12/2024 at 7:04 AM, NotMyFault said:

1. You need to activate snapping with option „force pixel alignment“. 
2. the layer will stay sharp as long you keep it on while integer position, and use 90 degree angles or multiples, and do not change layer DPI / size
3. otherwise you need to rasterize the layer once after every change which newly causes blurriness. this will „bake in“ the blurriness from layer misalignment.

 

Wow, thank you very much! I changed the decimal to 3, activated the "Force Pixel Alignment", deactivated the "Move by Whole Pixel" and it works perfectly now. You are amazing.

[NotMyFault]

I quick update  about rotation of pixel layers by 90° via mouse (or touch gesture on iPad) around the center point.

In case the layer size in x/y direction is either both odd or both even, and the layer position is whole pixels, the reult will be sharp.

In case one axis is even and the other is odd, you create a misalignmnet by 1/2 pixel affecting all pixels. So better avoid this method, or carefully check layer position and adjust to whole integer values after rotating!

 

upper row: unrotated

lower row: rotatet by 90° to the right