# Gaussian Blur / Blur Engine **URL:** \ **Category:** Feature Requests\ **Tags:** for-brush-engine\ **Created:** [October 4, 2024, 5:12am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368 "2024-10-04T05:12:18Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 5:12am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/1 "2024-10-04T05:12:18Z")
Currently Krita fakes their blurring brushes by using the Color Smudge Engine, it does a OK job but it’s not ideal as it makes the blur feel more like a smudge rather than true blur, which makes sense since it literally is a smudge with a slight blur filter. ![image](https://krita-artists.org/uploads/default/original/3X/5/d/5d50e676c6aa650e027bc8aa5ea85b41076d915e.png) Clip Studio Paint’s Blur Brushes gives a better, smoother result and the brush does not drag the color like a smear ![Screenshot_20241004-043143](https://krita-artists.org/uploads/default/original/3X/6/1/6157c504044ea2a3dd35032804250859479e924f.png) From what I could inspect the blur brush in Clip studio is basically a gaussian blur and the strength of the blur is linked to the pen pressure but they also allow you to use a fixed value incase you want the blur strength to remain the same, that’s how I think they achieve their blur brush. Here’s 2 videos comparing between the two software Krita - Default Blend Blur [https://krita-artists.org/uploads/default/original/3X/d/6/d65711ad625e21280506850260a34ef335eca40c.mp4](https://krita-artists.org/uploads/default/original/3X/d/6/d65711ad625e21280506850260a34ef335eca40c.mp4) Clip Studio - Default Blur [https://krita-artists.org/uploads/default/original/3X/6/1/61bbb822cadfe175d4929120d69efa54e720039c.mp4](https://krita-artists.org/uploads/default/original/3X/6/1/61bbb822cadfe175d4929120d69efa54e720039c.mp4) Discovered that someone before also wanted something like this > [@Equalizing blur brush, no smudge or scatter](https://krita-artists.org/t/equalizing-blur-brush-no-smudge-or-scatter/75233): > > I have ~5 years of experience using Krita Current blur brushes, no matter how you tweak them, will be messy and hard to work with. Krita lacks an effective blur brush. In a way, doesnt even have one. Becouse all current blur brushes are actually smudge or smudge+scatter which is very hard to work with. I needed a way to equalize blur for a very long time, and tried to achieve it, but never succeeded. How it works: Short description: brush samples all pixels under it (in a way that is defin… More posts showing how this “blur brush” is more like a “smear brush” > [@Help with Krita smudge functionality](https://krita-artists.org/t/help-with-krita-smudge-functionality/77902): > > Hey, just want say i really love Krita and the amount of out work you guys put into it. The UI is very satisfying and intuitive. i got into digital art a couple years ago with ipad and just got a Huion last month and checked out Krita. Will definitely be donating. However, i have a slight problem or confusion with the smudging functionality. i gave an example from ipad compared to Krita. It seems like its completely warping and the area of pixels close to what liquify does instead of just pullin… More reason to get a proper blur engine implemented, Don’t forget to vote people! ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 5:50am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/2 "2024-10-04T05:50:39Z")
Hello, What do you call proper ? There are quite a few options in the already existing Color Smudge Engine: - color rate - smudge length - smear vs dulling - new vs old smudge algo - overlay mode - etc… From the example I guess you would like to switch to dulling? ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:01am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/3 "2024-10-04T06:01:53Z")
ClipStudio Krita Krita calls it a blur brush but it smears instead of blurring and dulling doesn’t help, makes the brush feel even less like a blur brush Krita does not have a proper blur brush, its a smuge brush ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:06am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/4 "2024-10-04T06:06:51Z")
![image](https://krita-artists.org/uploads/default/original/3X/e/c/ec99bec90c9414e6f2dd662393d8b49923cface1.jpeg) ![image](https://krita-artists.org/uploads/default/original/3X/b/0/b0c21ed927c429e74dc9b02c00da52c4cbe0d93f.jpeg) Krita has brushes to do that, and the options are tweakable so you can customize it. Or I still didn’t understand (sorry) ---
**Author:** ![BeARToys](https://krita-artists.org/user_avatar/krita-artists.org/beartoys/32/200_2.png) [@BeARToys](https://krita-artists.org/u/BeARToys)\ **Post date:** [October 4, 2024, 6:13am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/5 "2024-10-04T06:13:22Z")
Sorry, but “proper” is indicating that krita does something fundamentally wrong. This is not the case if you are not able to phrase the problem you have in words. I can not see what the problem is, you are trying to convey. ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:13am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/6 "2024-10-04T06:13:38Z")
that’s good but my main issue is that it does not blur, it drags the colors like a smear ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:15am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/7 "2024-10-04T06:15:02Z")
It is fundamentally wrong, its called a blur brush, but it looks more like a smear than a blur and that’s my only nitpick with Krita. Blending colors can be so annoying at times because of this. ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:19am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/8 "2024-10-04T06:19:23Z")
In your latest example, we can see you use a very strong brush. Did you try the one I displayed? All this is customizable, My sample does much more like what you expect. You should take the time to play with it 😃 ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:20am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/9 "2024-10-04T06:20:30Z")
interesting, it could work for a while ---
**Author:** ![BeARToys](https://krita-artists.org/user_avatar/krita-artists.org/beartoys/32/200_2.png) [@BeARToys](https://krita-artists.org/u/BeARToys)\ **Post date:** [October 4, 2024, 6:20am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/10 "2024-10-04T06:20:33Z")
What do you expect? Please specify what should happen. ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:22am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/11 "2024-10-04T06:22:12Z")
I guess the right term would be a blurring effect, like gaussian blur under the brush ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:24am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/12 "2024-10-04T06:24:54Z")
Okay so here’s a mockup i did with a gaussian blur layer, this is how blur brush works in CSP but there’s a part missing, the radius (or strength of the blur) is dependent on the pen-pressure ![image](https://krita-artists.org/uploads/default/original/3X/7/4/749b7c8026960cf33dd054a5f0995c51890ab4e9.png) This is how more or less the blur brush in CSP works but they also have a fixed value mode that allows you to set the blur strength to a specific value The filter/effect brush engine is not ideal for this as its too slow ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:34am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/13 "2024-10-04T06:34:14Z")
I think it’s `smudge strenght` in the `smudge length` parameter and it’s coupleable with all kinds of brush dynamics ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:43am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/14 "2024-10-04T06:43:47Z")
![image](https://krita-artists.org/uploads/default/original/3X/5/d/5d50e676c6aa650e027bc8aa5ea85b41076d915e.png) ![image](https://krita-artists.org/uploads/default/original/3X/5/8/584344773961fa6e7dc244acc73f8b00bbf2b4d4.png) Changed the blur brush to not use length or radius. Even with tweaking settings that won’t achieve the intended look because the Color Smudge Engine fundamentally can’t produce a blur brush, it will always have that smear look to it which shouldn’t happen with a blur brush, that’s why i made this feature request so we can get a proper blur brush for krita. It could be a new brush engine or just additions to the color smudge engine incase it feels too minor to be granted a brand new engine. ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:52am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/15 "2024-10-04T06:52:56Z")
It’s obvious from the brush preview that you are configuring it wrong. The dynamics in your screenshot are all off, so I wonder how you proceed. Here is my preview: with smearing ![image](https://krita-artists.org/uploads/default/original/3X/9/a/9a6d5e8223b657e4fc1fc2ac80c329e9980a5b8c.png) with dulling and a gausian brush tip: ![image](https://krita-artists.org/uploads/default/original/3X/d/0/d06f3444bda5a2209fa330fd68c791e39c297a84.png) You need to take the time and try things subtilly ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:53am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/16 "2024-10-04T06:53:50Z")
alright then, if im that wrong then share with me the settings you used ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 6:55am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/17 "2024-10-04T06:55:20Z")
which one, I made multiple ones ---
**Author:** ![Axis\_Arts](https://krita-artists.org/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@Axis\_Arts](https://krita-artists.org/u/Axis_Arts)\ **Post date:** [October 4, 2024, 6:55am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/18 "2024-10-04T06:55:44Z")
![image](https://krita-artists.org/uploads/default/original/3X/d/0/d06f3444bda5a2209fa330fd68c791e39c297a84.png) this, or any others you have ---
**Author:** ![MangaTengu](https://krita-artists.org/user_avatar/krita-artists.org/mangatengu/32/1346_2.png) [@MangaTengu](https://krita-artists.org/u/MangaTengu)\ **Post date:** [October 4, 2024, 7:00am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/19 "2024-10-04T07:00:13Z")
Please, see my gumroad for more. Come oooon! Just joking 😄 It’s dulling mode + an extremely soft gausian brush tip ![Screenshot 2024-10-04 at 08.58.06](https://krita-artists.org/uploads/default/original/3X/9/6/96e7a610c1a3cd9f28ab7ce5a4e40f4ecffb77a3.jpeg) ![Screenshot 2024-10-04 at 08.58.17](https://krita-artists.org/uploads/default/original/3X/6/e/6ef017160504450a7df81de50835566e8c346530.jpeg) ![Screenshot 2024-10-04 at 08.58.21](https://krita-artists.org/uploads/default/original/3X/a/e/aec391dfb4d58500253b861d761521f6ef9d6a02.jpeg) Will it work for you ? If you calibrate to your pen and hand pressure. Everything is tweakable and worth a test in those options. Some may be crucial while they might look insignificant (got you, spacing) ---
**Author:** ![BeARToys](https://krita-artists.org/user_avatar/krita-artists.org/beartoys/32/200_2.png) [@BeARToys](https://krita-artists.org/u/BeARToys)\ **Post date:** [October 4, 2024, 7:04am UTC](https://krita-artists.org/t/gaussian-blur-blur-engine/103368/20 "2024-10-04T07:04:26Z")
> [@MangaTengu](#): > > Please, see my gumroad for more. That one was good 👍 🤣🤣🤣🤣🤣 [Next page](https://krita-artists.org/t/gaussian-blur-blur-engine/103368.md?page=2)