[Webkit-unassigned] [Bug 19312] New: SVG hit testing is *way* too slow
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu May 29 10:57:43 PDT 2008
http://bugs.webkit.org/show_bug.cgi?id=19312
Summary: SVG hit testing is *way* too slow
Product: WebKit
Version: 526+ (Nightly build)
Platform: Macintosh
OS/Version: Mac OS X 10.5
Status: NEW
Severity: Normal
Priority: P2
Component: SVG
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: eric at webkit.org
SVG hit testing is *way* too slow
See the attached test case.
I think the major problem is that RenderPath::nodeAtPoint() does not to any
sort of optimization (like checking against the bbox) before testing against
fill contains. Thus for an example like the one in the test case, we end up
doing hundreds if not thousands of unnecessary path containment tests (which
may involve mallocs, etc).
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