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    <p>Thanks a lot, Ken! This works much better. However ;) now I got
      very fat-looking fonts and lines (attached).</p>
    <p>Anything suggestions what I can do with that?</p>
    <p>Thanks!</p>
    <p>Marcin<br>
    </p>
    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 11/08/2017 02:29 PM, Ken Martin
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CANXz0Sar40xb7jwHZ3OtfT9TBZLNX=6RAQD0-NZ3oG4dSetQxw@mail.gmail.com">
      <div dir="ltr">Try using depth peeling to resolve the
        transparency. 
        <div><br>
        </div>
        <div>
          <div><br>
          </div>
          <div>  //@{</div>
          <div>  /**</div>
          <div>   * Turn on/off rendering of translucent material with
            depth peeling</div>
          <div>   * technique. The render window must have alpha bits
            (ie call</div>
          <div>   * SetAlphaBitPlanes(1)) and no multisample buffer (ie
            call</div>
          <div>   * SetMultiSamples(0) ) to support depth peeling.</div>
          <div>   * If UseDepthPeeling is on and the GPU supports it,
            depth peeling is used</div>
          <div>   * for rendering translucent materials.</div>
          <div>   * If UseDepthPeeling is off, alpha blending is used.</div>
          <div>   * Initial value is off.</div>
          <div>   */</div>
          <div>  vtkSetMacro(UseDepthPeeling,int);</div>
          <div>  vtkGetMacro(UseDepthPeeling,int);</div>
          <div>  vtkBooleanMacro(UseDepthPeeling,int);</div>
          <div>  //@}</div>
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      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, Nov 8, 2017 at 6:09 AM,
          marcin.krotkiewski <span dir="ltr"><<a
              href="mailto:marcin.krotkiewski@gmail.com" target="_blank"
              moz-do-not-send="true">marcin.krotkiewski@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear
            developers,<br>
            <br>
            I am observing strange rendering artifacts on my
            triangulated surface when I use transparency. The artifacts
            are observed at certain angles only. I've attached 3
            pictures:<br>
            <br>
             - opacity_1.png shows the model as it looks without
            transparency<br>
             - opacity_09.png shows the model at an angle chosen such
            that the artifact on the surface is visible.<br>
             - opacity_0.9_behind.png shows the same model with
            transparency rotated around to a view that does not show the
            artifact<br>
            <br>
            I am using vtk 8.0 with the OpenGL 2 rendering backend.<br>
            <br>
            Is this a bug, or am I doing sth wrong?<br>
            <br>
            Thanks!<span class="HOEnZb"><font color="#888888"><br>
                <br>
                Marcin<br>
                <br>
              </font></span><br>
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          </blockquote>
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        -- <br>
        <div class="gmail_signature" data-smartmail="gmail_signature">
          <div dir="ltr">
            <div>Ken Martin PhD
              <div>Distinguished Engineer<br>
                <span style="font-size:12.8px">Kitware Inc.</span><br>
              </div>
              <div>28 Corporate Drive<br>
                Clifton Park NY 12065<br>
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