AP 2.1.0 does not show transparency when loading TIFF with alpha channel

[Michael Allman]

When I load the attached TIFF file into AP 2.1.0, I only see black. However, this file has an alpha channel, and it should appear like a fuzzy black blob on a transparent background. I would expect that transparency to look like a checkerboard, like I see when loading the file in Photoshop.MetalPaint.tiff

Please refer to the discussion here: 

 

[Hangman]

Hi @Michael Allman,

Does this give you what you need...

[Dan C]

Hi @Michael Allman,

Thanks for your report!

As mentioned in your linked thread, I believe this is the consequences of changes to how Affinity Photo V2 handles Alpha layers in TIFF files - however I'm not 100% certain of the intentions here, as I can see V1 visually opens the file as you'd expect, but does not include this unassociated alpha layer.

Therefore I'm logging this with our development team now for further clarification, and I will be sure to update you here with any information I am provided

[Michael Allman]

6 hours ago, Hangman said:

Hi @Michael Allman,

Does this give you what you need...

 

Hi @Hangman.

Thank you for posting this workflow, however my bug report is that AP does not show transparency when loading the attached TIFF file. We've seen at least two workflows (including yours) to get it to do so _after_ the file has been loaded, but that's not really what my bug report is about.

Cheers.

[Hangman]

Hi @Michael Allman,

Completely understand, that was more of a workaround incase you were 'stranded' so to speak. As @Dan C mentions above he's logged the issue with the Serif development team for further clarification as to how this should work in practice in v2...

[Old Bruce]

@Michael Allman,

Myself, I am curious as the origin of the TIFF. Is it perhaps it is a TIFF with layers from Photoshop or another third party application which can save TIFFs with layers?

[Michael Allman]

9 hours ago, Old Bruce said:

@Michael Allman,

Myself, I am curious as the origin of the TIFF. Is it perhaps it is a TIFF with layers from Photoshop or another third party application which can save TIFFs with layers?

Hi @Old Bruce. The image was generated by a toy Mac app I wrote for simple interactive brush-based "painting". The image itself is just a "blob" or "stamp" of a brush. In fact, if you use the AP Paint Brush Tool to paint a single blob of a brush with width 1000 px, opacity 100% and hardness 0%, you will see something very similar.