<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native" href="https://bugs.freedesktop.org/show_bug.cgi?id=77436#c114">Comment # 114</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native" href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>(In reply to <a href="show_bug.cgi?id=77436#c113">comment #113</a>) > <a href="https://dl.dropboxusercontent.com/u/42927427/Xorg.0.log.tar.bz2">https://dl.dropboxusercontent.com/u/42927427/Xorg.0.log.tar.bz2</a> > enable-debug=full > as it was before - with debug scrolling is faster. Which is unfortunate as it means we don't get to see the true hog. Thanks, I'll look at that later. > tried to find operations that took at least 1ms > is > [157786.128] glyphs_format: overlapping glyph inside line, current bbox (54, > 290), (72, 299), glyph (70, 292), (79, 299) > a bad thing? It's fairly normal. It means that the glyphs bounding box overlaps (e.g. kerning, but it is usually due to subpixel filtering blurring the glyphs larger than designed) and prevents us from taking a fast path (due to Render semantics). It's only about 5x slower...</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>