249141 2022-12-12 05:34:26 -0800 [LBSE] Do not relayout on dynamic transform changes, if not necessary 2024-01-18 14:41:59 -0800 1 1 1 Unclassified WebKit SVG WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 249142 90738 1 zimmermann zimmermann heycam rbuis sabouhallawa simon.fraser webkit-bug-importer zimmermann oldest_to_newest 1918461 0 zimmermann 2022-12-12 05:34:26 -0800 The legacy SVG engine always had to perform relayouts when the transform of an element changed (up to the containing block, stopping at RenderSVGRoot boundary in case of mixed SVG/HTML documents). Container position and sizes were affected by the transformations of the descendants. That's no longer the case in LBSE, which follows CSS/HTML style of making transformations a paint effect, not inducing costly relayouts. However this only works if SVG <text> elements are not involved: SVG text always needs a relayout, as the "screen font size scaling factor" depends on the CTM of the transformed element (all transformations from target element up to RenderSVGRoot enter the calculation). The patch will present a solution for that, giving us transform updates without relayouts for everything except text, which is a good start. 1918464 1 zimmermann 2022-12-12 05:39:34 -0800 Pull request: https://github.com/WebKit/WebKit/pull/7482 1920456 2 webkit-bug-importer 2022-12-19 05:35:13 -0800 <rdar://problem/103512891> 1927052 3 ews-feeder 2023-01-20 17:20:04 -0800 Committed 259158@main (b348ce7635b6): <https://commits.webkit.org/259158@main> Reviewed commits have been landed. Closing PR #7482 and removing active labels.