NotMyFault Posted October 23, 2021 Share Posted October 23, 2021 (edited) Hi, when adding an add noise live filter, nest it into a group, placed atop a layer with partial transparency, it impacts the alpha channel in a unpredictable and unwanted way. The resulting alpha is expected to be constant 0,75 / 191 after layer blending for all pixels. The observed alpha value is scattered around 191, from 172 to 212. Mitght be related to my other post, might be a new issue. add noise alpha bug.afphoto Here a chart what would be expected (alpha mapped to blue channel to make it visible in Histogram) Edited October 23, 2021 by NotMyFault added histograms Quote Mac mini M1 A2348 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 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. Link to comment Share on other sites More sharing options...
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