Bug 411776 - Gaussian Blur Filter Layer Doesn't Wrap Around Canvas like Gaussian Blur Filter Operation
Summary: Gaussian Blur Filter Layer Doesn't Wrap Around Canvas like Gaussian Blur Filt...
Status: ASSIGNED
Alias: None
Product: krita
Classification: Applications
Component: Filter Layers (show other bugs)
Version: git master (please specify the git hash!)
Platform: Manjaro Linux
: NOR minor
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-09-10 03:22 UTC by Eoin O'Neill
Modified: 2022-12-29 23:02 UTC (History)
3 users (show)

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Description Eoin O'Neill 2019-09-10 03:22:41 UTC
SUMMARY
When working with a wrapping image, you can use the Gaussian Blur filter to blur the image and preserve looping. However, when using a filter layer Gaussian Blur, looping will not work as expected.  

STEPS TO REPRODUCE
1. Create a layer using Open Simplex Noise with looping enabled.
2. Gaussian Blur the result using the filter operation. The edges should wrap around as intended.
3. Undo that filter and now add a Gaussian Blur Filter Layer without any mask.
4. You'll notice that this Gaussian blur introduces hard edges at canvas border, which is the unintended behavior.

EXPECTED RESULT

Both filters should behave the same. Perhaps wrapping around the canvas should already be a toggle as well to make the intention clear. 


SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  Manjaro 18.0.4 Illyria

ADDITIONAL NOTES

Bug #355865 seems to be where these two elements branched into different behavior perhaps? Seems like it'd be an easy fix.
Comment 1 wolthera 2019-09-21 16:14:56 UTC
Hey Eoin, can you still reproduce this with master? I don't seem to be able to reproduce this here on KDE Neon.
Comment 2 Bug Janitor Service 2019-10-06 04:33:16 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
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If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2019-10-21 04:33:18 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!
Comment 4 Melcx 2020-02-13 15:32:02 UTC
Hi, I have this bug too : the blur filter behave differently if we have the image wrapping on or off, but we don't have control on it with a Blur Filter Layer.

I'm on Windows 10 64bit, version 4.2.8 (stable).

The suggestion of Eoin seems good (adding a toggle to enable blur wrapping).
Comment 5 Eoin O'Neill 2021-04-26 21:25:28 UTC
I'm going to go ahead and assign myself and explore this myself.