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    <body><span class="vcard"><a class="email" href="mailto:vstuart.foote@utsa.edu" title="V Stuart Foote <vstuart.foote@utsa.edu>"> <span class="fn">V Stuart Foote</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Residual Effects"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=111923">bug 111923</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;">Status</td>
           <td>UNCONFIRMED
           </td>
           <td>NEW
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>michael.meeks@collabora.com, quikee@gmail.com, tml@iki.fi
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Ever confirmed</td>
           <td>
                
           </td>
           <td>1
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Residual Effects"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=111923#c12">Comment # 12</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Residual Effects"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=111923">bug 111923</a>
              from <span class="vcard"><a class="email" href="mailto:vstuart.foote@utsa.edu" title="V Stuart Foote <vstuart.foote@utsa.edu>"> <span class="fn">V Stuart Foote</span></a>
</span></b>
        <pre>(In reply to Darrell from <a href="show_bug.cgi?id=111923#c11">comment #11</a>)
<span class="quote">> In the example presentation, you can see that I create a text box that has
> background color and 25% transparency. When I click to start the animation,
> the text background turns opaque (see Slide Transition Example) until it
> finishes, then turns semi-transparent again.</span >

Confirming with sample presentation <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=135677" name="attach_135677" title="Example Presentation">attachment 135677</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=135677&action=edit" title="Example Presentation">[details]</a></span>, The pixel artifacts are
present with Hardware Acceleration, absent with OpenGL and CPU only rendering,
that text rendering issue is <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Text is poorly rendered to presentation mode canvas with Default UI render and "Use hardware acceleration" enabled (OpenGL and CPU only rendering is correct)"
   href="show_bug.cgi?id=107090">bug 107090</a>

Weird, as handling of the transparency of the Text box animation is correct
with HA, but goes opaque with CPU only or with OpenGL rendering. That is--as
animation begin (entrance split, or exit split) the transparent text box goes
opaque and is then animated. But it is correct with Hardware Acceleration.

=-testing on-=
Windows 10 Home 64-bit en-US (v1703) with Intel(R) HD Graphics 620
(21.20.16.4550)

Version: 6.0.0.0.alpha0+ (x64)
Build ID: c420f36d9a19bb0b9da5cefa0c1b54b60ccb41a8
CPU threads: 4; OS: Windows 6.19; UI render: default; 
TinderBox: Win-x86_64@42, Branch:master, Time: 2017-08-26_00:07:29
Locale: en-US (en_US); Calc: CL

and with 

Version: 5.4.1.1 (x64)
Build ID: a5be49f0c45fe24a575c7f41559aa8fc79a781a2
CPU threads: 4; OS: Windows 6.19; UI render: default; 
Locale: en-US (en_US); Calc: group</pre>
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