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    <p>Hi all,</p>
    <p>I've noticed that the black box problem can come from the FXAA
      enabled in the render settings (I have the same problem with my
      computer & 5.4) but it does not explain the problem with
      opacity. (my graphics card is a GeForce GTX770M)<br>
    </p>
    <p>Yves<br>
    </p>
    <br>
    <div class="moz-cite-prefix">Le 02/07/2017 à 23:41, Yu Xiang a
      écrit :<br>
    </div>
    <blockquote cite="mid:005901d2f37b$f16f0ec0$d44d2c40$@gmail.com"
      type="cite">
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        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks
            very much for your reply. My computer has two graphic cards:
            Intel HD Graphics 4000 and NVIDA NVS 5400M, respectively. I
            switch to 5.3 and no longer have those two problems. <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Yu<o:p></o:p></span></p>
        <p class="MsoNormal"><a moz-do-not-send="true"
            name="_MailEndCompose"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
        <p class="MsoNormal"><b><span
              style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
            David E DeMarle [<a class="moz-txt-link-freetext" href="mailto:dave.demarle@kitware.com">mailto:dave.demarle@kitware.com</a>] <br>
            <b>Sent:</b> Sunday, July 2, 2017 7:10 AM<br>
            <b>To:</b> Yu Xiang <a class="moz-txt-link-rfc2396E" href="mailto:yux1991@gmail.com"><yux1991@gmail.com></a><br>
            <b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:paraview@paraview.org">paraview@paraview.org</a><br>
            <b>Subject:</b> Re: [Paraview] ParaView unable to adjust
            object opacity<o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <p class="MsoNormal">These are most likely caused by a known
            bug in 5.4.0 with some graphics hardware that we are trying
            to fix in 5.4.1. Can you let us know what your gpu is? Also
            try 5.3 and let us know if both problems work there.<o:p></o:p></p>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Thanks<o:p></o:p></p>
          </div>
        </div>
        <div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <div>
            <p class="MsoNormal">On Jun 30, 2017 10:51 PM, "Yu Xiang"
              <<a moz-do-not-send="true"
                href="mailto:yux1991@gmail.com">yux1991@gmail.com</a>>
              wrote:<o:p></o:p></p>
            <blockquote style="border:none;border-left:solid #CCCCCC
              1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
              <div>
                <div>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I
                    downloaded the ParaView Binary Installers
                    (ParaView-5.4.0-Qt5-OpenGL2-Windows-64bit.exe) from
                    <a moz-do-not-send="true"
                      href="https://www.paraview.org/download/"
                      target="_blank">https://www.paraview.org/download/</a>
                    and installed it on my Thinkpad T430 which is
                    running Windows 10. I was using ParaView for the
                    first time and found two things puzzling:<o:p></o:p></p>
                  <p class="m-7160707241507116115msolistparagraph">1.<span
                      style="font-size:7.0pt">       </span>When I open
                    ParaView, the default window looks like the
                    following. There is a small black square on the
                    bottom left corner in RenderView1 (circled in red).
                    I couldn’t figure out why it showed up there.<o:p></o:p></p>
                  <p class="m-7160707241507116115msolistparagraph"><img
                      id="m_-7160707241507116115Picture_x0020_1"
                      src="cid:part4.AF688CD3.C763548C@univ-grenoble-alpes.fr"
alt="imap://rogezy@hermes.obs.ujf-grenoble.fr:993/fetch%3EUID%3E/aaLists/03_Paraview%3E831190?header=quotebody&part=1.1.2&filename=image001.png"
                      height="908" border="0" width="1601"><o:p></o:p></p>
                  <p class="m-7160707241507116115msolistparagraph">2.<span
                      style="font-size:7.0pt">       </span>Then I
                    opened the first Example Visualization and selected
                    Clip2 under can.ex2. When I tried to adjust the
                    Opacity under Styling in the Properties tab, any
                    value other than 1 will make the object in the
                    RenderView1 window disappear like the following:<o:p></o:p></p>
                  <p class="m-7160707241507116115msolistparagraph"><img
                      id="m_-7160707241507116115Picture_x0020_2"
                      src="cid:part5.54E132C4.1EFF1E5F@univ-grenoble-alpes.fr"
alt="imap://rogezy@hermes.obs.ujf-grenoble.fr:993/fetch%3EUID%3E/aaLists/03_Paraview%3E831190?header=quotebody&part=1.1.3&filename=image002.png"
                      height="908" border="0" width="1600"><o:p></o:p></p>
                  <p class="m-7160707241507116115msolistparagraph">I
                    tried other examples, and similar things happened. I
                    couldn’t figure out why.<o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Does
                    anybody know what might be going on and how I can
                    fix it?<o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Yu<o:p></o:p></p>
                </div>
              </div>
              <p class="MsoNormal" style="margin-bottom:12.0pt"><br>
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                Please keep messages on-topic and check the ParaView
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      <pre wrap="">_______________________________________________
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</pre>
    </blockquote>
    <br>
    <div class="moz-signature">-- <br>
      Yves Rogez<br>
      <br>
      <b>IPAG</b><br>
      <em>Institut de Planétologie et d'Astrophysique de Grenoble </em><br>
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