'[cairo-bugs] [Bug 102661] Treat color glyph alpha as mask instead of source alpha'

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List:       cairo-bugs
Subject:    [cairo-bugs] [Bug 102661] Treat color glyph alpha as mask instead of source alpha
From:       bugzilla-daemon () freedesktop ! org
Date:       2018-07-31 3:03:03
Message-ID: bug-102661-4039-IOBN98RuOZ () http ! bugs ! freedesktop ! org/
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Date: Tue, 31 Jul 2018 03:03:04 +0000
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https://bugs.freedesktop.org/show_bug.cgi?id=102661

Alexei Podtelezhnikov <apodtele@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |apodtele@gmail.com,
                   |                            |wl@gnu.org

--- Comment #9 from Alexei Podtelezhnikov <apodtele@gmail.com> ---
Ahh. I wish I knew about premultiplication and objected as much as I could. Now
we are about to release layered fonts with the premultiplication... Screw
everyone who cares about gamma correction too!

At least Direct2D offers a choice
https://docs.microsoft.com/en-us/windows/desktop/api/dcommon/ne-dcommon-d2d1_alpha_mode

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<html>
    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body><span class="vcard"><a class="email" href="mailto:apodtele&#64;gmail.com" \
title="Alexei Podtelezhnikov &lt;apodtele&#64;gmail.com&gt;"> <span class="fn">Alexei \
Podtelezhnikov</span></a> </span> changed
          <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Treat color glyph alpha as mask instead of source alpha"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=102661">bug 102661</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
               &nbsp;
           </td>
           <td>apodtele&#64;gmail.com, wl&#64;gnu.org
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Treat color glyph alpha as mask instead of source alpha"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=102661#c9">Comment # 9</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Treat color glyph alpha as mask instead of source alpha"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=102661">bug 102661</a>
              from <span class="vcard"><a class="email" \
href="mailto:apodtele&#64;gmail.com" title="Alexei Podtelezhnikov \
&lt;apodtele&#64;gmail.com&gt;"> <span class="fn">Alexei Podtelezhnikov</span></a> \
                </span></b>
        <pre>Ahh. I wish I knew about premultiplication and objected as much as I \
could. Now we are about to release layered fonts with the premultiplication... Screw
everyone who cares about gamma correction too!

At least Direct2D offers a choice
<a href="https://docs.microsoft.com/en-us/windows/desktop/api/dcommon/ne-dcommon-d2d1_ \
alpha_mode">https://docs.microsoft.com/en-us/windows/desktop/api/dcommon/ne-dcommon-d2d1_alpha_mode</a></pre>
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