275806 2024-06-24 02:45:45 -0700 [TexMap] Produce damage for layers repainted after animation 2025-05-23 03:29:20 -0700 1 1 1 Unclassified WebKit Compositing WebKit Local Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=277484 https://bugs.webkit.org/show_bug.cgi?id=284808 InRadar P2 Normal --- 265777 1 aperez plampe plampe simon.fraser webkit-bug-importer oldest_to_newest 2042734 0 aperez 2024-06-24 02:45:45 -0700 Transformed animated layers are painted with lower resolution while an animation is ongoing, and re-painted after the animation has ended to make sure they look their best at their resting position. When using damage tracking with an output that uses device scaling != 1x (e.g. with 2x scaling on a HiDPI screen) it is quite obvious that the repaint at the resting position after the animation is *not* producing damage rectangles because when damage is enabled the previous painted contents (with less resolution) are left in place because the location and properties of the layers have not changed. Likely we are missing some check like “if there was a paint with different resolution then damage the area” or similar. 2043914 1 webkit-bug-importer 2024-07-01 02:46:13 -0700 <rdar://problem/130882523> 2119240 2 plampe 2025-05-23 03:29:20 -0700 Looks like this is not reproducible anymore after the improvements that were done to the damaging throughout previous months.