Update on what happened in WebKit in the week from August 10 to August 17.
Following an extra packed periodical, this week we get back to a more regular pace with two nice bugfixes, and a new tool to analyze WebKit performance on Linux!
Cross-Port 🐱
The webkit-sysprof toolkit landed in main thus introducing a set of tools for processing Sysprof .syscap capture files recorded from WebKit (GTK/WPE ports). It extracts marks (timeline events) and counters (time-series metrics) from a capture and lets one dump, summarize, analyze, or plot delta-time histograms for them.
Graphics 🖼️
Fixed filters specified on the outermost <svg> element in the Layer-Based SVG Engine (LBSE), where a filter: url(...) reference on an SVG root was silently dropped because the layer code skipped it, as the legacy engine used to apply it by itself. The filter region is now resolved against the SVG root's border box in its container's coordinate system, since the outermost <svg> is a replaced element in the CSS box tree, not part of the SVG user space its children live in.
Avoided serializing gradient and pattern transforms just to answer a presence check in the Layer-Based SVG Engine (LBSE). Asking hasAttribute() whether gradientTransform or patternTransform was specified forced the transform list to be serialized into the attribute map whenever the base value was changed through the SVG DOM, even though that string is never read back, so the check is now answered directly from the typed accessor.
That’s all for this week!
