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Bug in Affinity Photo 1.10.1 when using the Selection Brush tool?


alecspra

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Since updating to 1.10.1 when I try using the Selection Brush tool it behaves in strange ways. If i select an area and then try refining it the brush behaves erratically going from adding to substracting and then the selection disappears and I have to start over. My computer is the same I was using prior to updating to 1.10.1. Macbook Air M1 with 16 MB ram. Is this a bug?

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Can you capture a video of this happening? That would help diagnose the problem, as we could see what you're seeing and what you're doing.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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Thank you Walt for helping out. Attached below is a screen recording. As you can see, this time the problem is that when I am trying to refine the selection, it quits.

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Thanks for the video. Sorry, but I'm not sure what's happening, but I hope someone else will have some ideas after watching it.

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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Hi @alecspra,
I believe this is an issue related with the M1 graphics processor specifically but I may be wrong. If you disable/untick Metal compute acceleration in Affinity Photo Preferences, Performance section (you must restart the app for the new setting take effect) does it behave the same way?
Do you mind attaching a screenshot of your settings the Preferences, Performance section please?

After taking the screenshot, right-click the Affinity app in the Application folder, select Get Info then tick Open using Rosetta in the General section. Try to do the same again with the same file. Does it behave the same way? Remember to untick Open using Rosetta again after you check this out. Thank you.

 

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Hi MEB

I followed your instructions and it made a difference. After unchecking Metal compute acceleration (screen shot attached below), I tried using the app without ticking Open using Rosetta stone, and it worked fine. Then I tried using it after ticking Open using Rosetta stone and it also worked fine. In other words, i don't think ticking Open using Rosetta stone made a difference.

- What do you recommend i do going forward?

- Are you going to make AF fully compatible with the M1 chip anytime soon? And how will you let us know when it's done?

Thank you,

Alexander

Screen Shot 2021-09-20 at 10.07.45 AM.png

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Hi @alecspra,
Thanks for checking. Much appreciated. I forgot to mention something - when i asked to try with Open using Rosetta i meant with Metal compute acceleration enabled too (my bad here sorry). From your description seems you disabled Metal acceleration to test without Rosetta (and it works fine this way) but then you ticked Open with Rosetta and tried again without enabling Metal compute acceleration i believe?
In other words what i would like to know is: if you run the app using Rosetta and with Metal compute acceleration enabled does it work fine or fail as well?
Thank you.

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  • Staff

Hi @alecspra,
Thanks for clearing this up. Currently the only way to prevent it is to turn off Metal compute acceleration. Yes this is a bug with hardware acceleration. I remember seeing similar reports before but they were never associated with the M1 specifically. I'm checking them and logging this issue to be looked at.
I will report back on this thread when the bug is fixed. Thanks for your support and patience.

 

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MEB, after tinkering with the settings on the Preferences/Performance pane as requested, I don't know what the default settings are anymore, and I don't want to reset everything back to factory default. Can you please provide a screen shot of the default settings for a Mac of the Preferences/Performance settings or point me to where I can find that information. Thank you!

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