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Have you selected the layer that you wish to apply the blur on from the layers panel?

Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say there is more stupidity than hydrogen, and that is the basic building block of the universe.

These are not my own words but I sure like this quote.

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  • 2 months later...

The blur and median blur brushes do NOTHING at my machine, and I think it's been that way since 1.71 dropped, maybe longer. I'm now on Catalina (wasn't then) and I have an eGPU (didn't then). I've seen little or no sign you're taking advantage of the eGPB, by the way, but the blur brushes are my concern for now.

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25 minutes ago, drmajorbob said:

The blur and median blur brushes do NOTHING at my machine, and I think it's been that way since 1.71 dropped, maybe longer. I'm now on Catalina (wasn't then) and I have an eGPU (didn't then). I've seen little or no sign you're taking advantage of the eGPB, by the way, but the blur brushes are my concern for now.

The blur brush is very subtle, for me, but it works (on Windows).

To make sure it's not just a matter of it being too subtle for the images you're trying it on, here's a sample that should be able to prove whether it's working:
image.png.1ff6b6ce4de4a0e2d7f1dbc0ede58c04.png

You should be able to save that from the forum, then Open in AP and display it at 400% zoom. Set the Blur Brush to 33px, 100% opacity/flow/hardness, and make sure you have the pixel layer selected.

At that point, if you move the brush over the image you should see something like this, with a blurred circle where the brush is:

image.png.47953678febbd98e7449495c3080be09.png

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
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There's an issue with Blur Brush on Mac with Metal Compute enabled. It manifests itself as an occasional transparent brush preview and no change to the image when the brush is used.

1987919456_Screenshot2019-12-07at19_39_32.thumb.png.bec3230b480c0bcf885050db2c7144ac.png

Turning off Metal Compute (Preferences - Performance) and restarting seems to be the only work-round.

 

 

Affinity Photo 2.0.3,  Affinity Designer 2.0.3, Affinity Publisher 2.0.3, Mac OSX 13, 2018 MacBook Pro 15" Intel.

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3 hours ago, h_d said:

There's an issue with Blur Brush on Mac with Metal Compute enabled. It manifests itself as an occasional transparent brush preview and no change to the image when the brush is used.

Turning off Metal Compute (Preferences - Performance) and restarting seems to be the only work-round.

I too have the invisible brush effect but the blur, and other brushes do do what they are supposed to do.

Mac Pro (Late 2013) Mac OS 12.7.4 
Affinity Designer 2.4.0 | Affinity Photo 2.4.0 | Affinity Publisher 2.4.0 | Beta versions as they appear.

I have never mastered color management, period, so I cannot help with that.

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