trpote Posted April 15 Posted April 15 I'm attempting to pixelate an image in Affinity Photo. The live view of the filter is the output I'm looking for; however, when I click apply suddenly several pixel colors change rather drastically. Is there a way to "keep" the colors that are shown in the live view of the filter? Is there another reason why the filter would behave differently before and after being applied? The image shows a before and after clicking apply on the pixelate filter. Quote
NotMyFault Posted April 15 Posted April 15 The filter is buggy. Can you share the source file to check if this is the same bug or a new one? I cannot replicate the issue you state, lacking the image and settings Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
trpote Posted April 15 Author Posted April 15 Pixel_Mona_Lisa.afphoto Thanks for the response @NotMyFault. I saw that post while searching and assumed it was only related to the iPad and perhaps a bit naively it to have been fixed a year later. I tried setting the rulers and set it to the edge of the background layer before applying the filter but didn't see any shift. I may also be misunderstanding the directions. I've also included a copy of the file, hopefully that helps reproduce the issue. Either way, thank you for your assistance and thoughts. Quote
NotMyFault Posted April 15 Posted April 15 Thanks for the file, it shows only the state after the edit. Any chance you can provide before state, and which you used? Ot save with history, covering all states. Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
NotMyFault Posted April 15 Posted April 15 Most probably you applied the filter while zoomed out heavily. Due to mipmap rendering, the preview can be misleading in any zoom level other than 100%. This is a „by design“ constraint and no bug. trpote 1 Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
trpote Posted April 15 Author Posted April 15 Thank you! Yes, that is indeed what is happening. I can reproduce the issue while zooming during the live preview of the filter. Is there a way to reproduce the visual of the live preview? Quote
NotMyFault Posted April 15 Posted April 15 1 hour ago, trpote said: Is there a way to reproduce the visual of the live preview? What exactly do you want? the live preview is based on the canvas resolution. If you zoom out to e.g. 25%, the canvas shows 1/4 of the resolution. If you used e.g. 32 px radius. The results should resemble a document resized by factor 1/4 with bilinear resampling first, followed by a pixelate filter (or downscale by 1/32*4 =0,125 1/8) with NN resample. Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
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