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Posted
Applying the filter to a layer with areas of full transparency (alpha=100%) fills the entire layer. 
Expected behavior would be to fill only the opaque areas and taken into account the alpha cannel. 
The "Preserve Alpha" option would also make sense in the filter.

Affinty Photo V.1.10.5.1342, Windows

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Posted

Hi @erdi12,

I must be missing something, as i've not been able to replicate this on Windows.  Could you attach a sample .afphoto file that shows the issue?

Posted

Same on iPad.

Its about the destructive filter (there is a non-destructive version in procedural texture presets). I personally would not rate this as bug. The filter creates its own alpha, and replaces the layer below completely.

If you want preserve alpha, you can simply use the channels panel and uncheck “edit alpha”.

 

Mac mini M1 A2348 | MBP M3 

Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.

 

Posted

I add an example file. The botton layer ist the basis ist it was duplicated 3 times. Midle layer shows teh sesult with the Filter Perlin Noise. the complete layer ist filled. The top Layer shows a workaround. Before adjust the filter a adition mask is added. It shows asl result the aspected behaviour of the filter in the middle layer.

If you use filter add-Noise the behaviour is as espectected.

Bug_Perlin_Noise_Filter.afphoto

Posted
On 4/18/2022 at 2:42 PM, erdi12 said:

Expected behavior would be to fill only the opaque areas and taken into account the alpha cannel.

To be honest, I'm not sure that that is what I would expect! 😉  I don't see it as a bug, just the way this filter works.

Acer XC-895 Core i5-10400 Hexa-core 2.90 GHz : 32GB RAM : Intel UHD Graphics 630 – Windows 11 Home - Affinity Publisher, Photo & Designer, v2
(As I am a Windows user, any answers/comments I contribute may not apply to Mac or iPad.)

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