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Colour Dodge Blend Mode Is Incorrect


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Unsure if this is already logged but I couldn't immediately find a bug report for it...

The Colour Dodge Blend Mode Displays incorrectly... In the example below the Blend Mode is applied to the lower Blue rectangle... Note: The same issue exists in v1.

Actual Result Left | Expected Result Right

ColourDodge.thumb.png.da1e3bdea989d9fbd7503428fd028937.png

Sample File

Blend Mode 2.0 Master.afdesign

Affinity Designer 2.4.2 | Affinity Photo 2.4.2 | Affinity Publisher 2.4.2
Affinity Designer  Beta 2.5.0 (2415) | Affinity Photo Beta 2.5.0 (2415) | Affinity Publisher Beta 2.5.0 (2415)

Affinity Designer 1.7.3 | Affinity Photo 1.7.3 | Affinity Publisher 1.10.8
MacBook Pro 16GB, macOS Monterey 12.7.4, Magic Mouse

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Is it really a bug?
I just copied the vector objects to VectorStyler, and it behaves exactly the same.

MacBookAir 15": MacOS Ventura > Affinity v1, v2, v2 beta // MacBookPro 15" mid-2012: MacOS El Capitan > Affinity v1 / MacOS Catalina > Affinity v1, v2, v2 beta // iPad 8th: iPadOS 16 > Affinity v2

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34 minutes ago, loukash said:

Is it really a bug?

I believe so but looking for clarification...

34 minutes ago, loukash said:

I just copied the vector objects to VectorStyler, and it behaves exactly the same.

VectorStyler is pretty buggy...

I see the result shown on the right (for the image shown in the previous post) in both PhotoPea and Pixelmator...

Affinity Designer 2.4.2 | Affinity Photo 2.4.2 | Affinity Publisher 2.4.2
Affinity Designer  Beta 2.5.0 (2415) | Affinity Photo Beta 2.5.0 (2415) | Affinity Publisher Beta 2.5.0 (2415)

Affinity Designer 1.7.3 | Affinity Photo 1.7.3 | Affinity Publisher 1.10.8
MacBook Pro 16GB, macOS Monterey 12.7.4, Magic Mouse

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2 minutes ago, MEB said:

Thanks Hangman. Confirmed here. I'm logging the issue to be looked at. It's currently being rendering as Add rather than Color Dodge.

Hi @MEB,

Exactly that, many thanks for confirming and logging... There is also a difference between how v1 and v2 render the Vivid Light Blend Mode but I think (though am not 100% sure) that the v2 rendering is correct...

Affinity Designer 2.4.2 | Affinity Photo 2.4.2 | Affinity Publisher 2.4.2
Affinity Designer  Beta 2.5.0 (2415) | Affinity Photo Beta 2.5.0 (2415) | Affinity Publisher Beta 2.5.0 (2415)

Affinity Designer 1.7.3 | Affinity Photo 1.7.3 | Affinity Publisher 1.10.8
MacBook Pro 16GB, macOS Monterey 12.7.4, Magic Mouse

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6 minutes ago, Hangman said:

I see the result shown on the right (for the image shown in the previous post) in both PhotoPea and Pixelmator...

I just checked your example in Illustrator CS5, and you're right: 

3 minutes ago, MEB said:

It's currently being rendering as Add rather than Color Dodge.

(Funny though that VectorStyler obviously suffers from the same bug… :D)

MacBookAir 15": MacOS Ventura > Affinity v1, v2, v2 beta // MacBookPro 15" mid-2012: MacOS El Capitan > Affinity v1 / MacOS Catalina > Affinity v1, v2, v2 beta // iPad 8th: iPadOS 16 > Affinity v2

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6 minutes ago, loukash said:

I just checked your example in Illustrator CS5, and you're right: 

Thanks for checking and clarifying, much appreciated... :)

7 minutes ago, loukash said:

(Funny though that VectorStyler obviously suffers from the same bug… :D)

VectorStyler suffers from many bugs... :)

Affinity Designer 2.4.2 | Affinity Photo 2.4.2 | Affinity Publisher 2.4.2
Affinity Designer  Beta 2.5.0 (2415) | Affinity Photo Beta 2.5.0 (2415) | Affinity Publisher Beta 2.5.0 (2415)

Affinity Designer 1.7.3 | Affinity Photo 1.7.3 | Affinity Publisher 1.10.8
MacBook Pro 16GB, macOS Monterey 12.7.4, Magic Mouse

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1 minute ago, MEB said:

Yes, V2 is rendering it correctly, not V1.

Thanks for confirming... :)

Affinity Designer 2.4.2 | Affinity Photo 2.4.2 | Affinity Publisher 2.4.2
Affinity Designer  Beta 2.5.0 (2415) | Affinity Photo Beta 2.5.0 (2415) | Affinity Publisher Beta 2.5.0 (2415)

Affinity Designer 1.7.3 | Affinity Photo 1.7.3 | Affinity Publisher 1.10.8
MacBook Pro 16GB, macOS Monterey 12.7.4, Magic Mouse

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