https://bugs.documentfoundation.org/show_bug.cgi?id=119940
--- Comment #19 from Jonathan Clark <[email protected]> --- (In reply to Eyal Rozenberg from comment #17) > While I agree with your conclusion for David CLM, I still see this > phenomenon with David Libre and with Frank Ruehl CLM, even if perhaps with > somewhat smaller space changes. I repeated the experiment for David Libre and Frank Ruehl CLM. The results were the same, and reflect my expectations for an implementation that's behaving correctly. For a number of technical reasons, there will always be some judder when rendering text in situations like this. For example, the Skia glyph cache has a hard-coded limit on horizontal subpixel offset (4, I believe). This kind of optimization is necessary to maintain a hardware-feasible glyph cache size, but as a side effect it will cause a subtle but observable pattern in subpixel movement if you do a test like the one you described. Humans are very good at noticing patterns. What matters is what measurement shows. The position difference is being applied more-or-less uniformly to all of the glyphs in the run, rather than applying it to specific characters per the original bug report. In my opinion, this bug has been fixed. -- You are receiving this mail because: You are the assignee for the bug.
