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Updated to 1.7.3.481, AP locks up trying to merge pixel layers


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I updated to 1.7.3.481. I always grab the latest updates when they come out.

I've been working on a project which isn't that big yet. It's 3807x2003 pixels, or 7.63MP. I've got 7 primary layers and just a few basic adjustment layers and masks. The file size of the .afphoto file is 61MB.

The problem is that it won't merge down a pixel layer. I've got this one small layer with a texture on it, it's only about 150px wide by 20px tall or something, a little texture for a landscape project.

When I duplicate the layer and adjust things and then try to merge down into the lower texture layer, AP freezes up on the "merge down" spinner and never recovers. It sucks up memory quick, up to 10GB and more if I let it until my whole system crashes.

I tried duplicating the file, deleting all the other layers, still crashes. I tried coping just that texture layer into a new document, merge still crashed.

I assume there is something wrong with this little texture layer, because I eventually got it to work by getting a new document again, then cropping down to the smallest size I can get away with. Then export as a plain JPG, then import back to a fresh new doc again, then I was able to duplicate and merge this new one.

I don't know what was wrong with the layer, but that was really weird.

If it helps, I'll tell you how I originally created the texture. Simple, I just grabbed a photo of the item I wanted (some rocks). Then I sized the selection down, did a perspective adjustment, and sized down again based on where I wanted it in the image. The original photo was sized down and distorted so much that my texture was little more than random pixels of red hues, which is all I wanted.

My guess is that there must have been information from the larger photo still lingering somewhere in that pixel layer, even though I had erased all the content down to the selection I wanted. I don't know.

I could try and create a minimal document that still crashes on me, and send that to someone privately if it helps. Or maybe this is a known issue already?

Thanks!

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Figures, I don't have a proper backup of the bad one. I spent so much time deleting layers and moving to new files and editing and copying back, etc. 

I have a suspicion that what was going on is that my original texture was a large file, a regular photograph where I took the sample texture from. As I erased all the parts of the sample out, leaving only the texture, Affinity must have been keeping all the data for the whole photo around?? So when I make copies of this layer and try to merge them, it was perhaps too large of a layer as far as how much data was in it?

 

When I made a selection of the texture, then copied just that little bit and made sure there was no other data in the layer, this one merged just fine.

On the large photo layer crashed on me. I'm not sure I could duplicate this again but I'll try.

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