[Webkit-unassigned] [Bug 152393] REGRESSION (r172008): Icon fonts using hinting blurred at odd window widths

Fri Dec 18 02:18:38 PST 2015

https://bugs.webkit.org/show_bug.cgi?id=152393

--- Comment #9 from Adam Strzelecki <ono at java.pl> ---
It is not reproducible with my test case on Retina because simple (math) reason - 100.5px logical pixels when windows size is 1001, are 201 physical pixels on Retina, so text box begins on physical pixel boundary -> no blur. However one can make some other example such as using divs with percent sizes where calculated with is not integer of Retina pixel, see:

--- octiretina.html
<!DOCTYPE html>
<html>
<head>
    <link crossorigin="anonymous" href="https://cdnjs.cloudflare.com/ajax/libs/octicons/3.3.0/octicons.css" media="all" rel="stylesheet">
    <head>
        <style>
            #container {
                border: 1px solid silver;
                padding: 10px;
                width: 500px;
                margin: auto;
                height: 100%;
            }
            #left  { float: left;  width: 33.66667%; }
            #right { float: right; width: 33.33333%; }
            #clear { clear: both; }
        </style>
    </head>
</head>
<body>
    <div id="container">
        <div id="left">
            <span class="octicon octicon-repo"></span>
            <span class="octicon octicon-plus"></span>
        </div>
        <div id="right">
            <span class="octicon octicon-repo"></span>
            <span class="octicon octicon-plus"></span>
        </div>
        <div id="clear"></div>
    </div>
</body>
</html>
--- /octiretina.html

Blur is visible on Retina at right column. So WebKit is not obeying hinting and right font is not pixel aligned on Retina. Tested on my MBP.

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