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    500^3 should not be an issue. Still worth seeing if you can get the
    test data from wavelet source to display as a sanity check. Another
    thing that occasionally occurs, if the there is one or two extremely
    large outlying values in your dataset (say from writing random
    unitialized memory), the default transfer function makes the dataset
    invisible. Would be worth checking the range of your data and
    experimenting with transfer function as well.<br>
    <br>
    <div class="moz-cite-prefix">On 06/10/2015 12:03 PM, David E DeMarle
      wrote:<br>
    </div>
    <blockquote
cite="mid:CANjZAi-GVsCFA9ogUwO-xxfn=KJY1dp4w4N79gQi8RJ_q7ELug@mail.gmail.com"
      type="cite">
      <div dir="ltr">Probably the content isn't amenable to volume
        rendering. To be so, the unstructured grid has to have
        volumetric cells in it (tets, voxels, etc). If it just has polys
        or lines or points in it, they won't appear. You'll have to
        resample of splat onto the data onto a volumetric grid in that
        case.
        <div><br>
          <div><br>
          </div>
          <div><br>
          </div>
        </div>
      </div>
      <div class="gmail_extra"><br clear="all">
        <div>
          <div class="gmail_signature">David E DeMarle<br>
            Kitware, Inc.<br>
            R&D Engineer<br>
            21 Corporate Drive<br>
            Clifton Park, NY 12065-8662<br>
            Phone: 518-881-4909</div>
        </div>
        <br>
        <div class="gmail_quote">On Wed, Jun 10, 2015 at 2:58 PM,
          Aashish Chaudhary <span dir="ltr"><<a
              moz-do-not-send="true"
              href="mailto:aashish.chaudhary@kitware.com"
              target="_blank">aashish.chaudhary@kitware.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">No, I don't think so. It would be nice if you
              can try Burlen suggestion to see if it works for built in
              datasets / sources. <span class="HOEnZb"><font
                  color="#888888">
                  <div><br>
                  </div>
                  <div>- Aashish</div>
                </font></span></div>
            <div class="gmail_extra">
              <div>
                <div class="h5"><br>
                  <div class="gmail_quote">On Wed, Jun 10, 2015 at 2:49
                    PM, Jeff Becker <span dir="ltr"><<a
                        moz-do-not-send="true"
                        href="mailto:jeffrey.c.becker@nasa.gov"
                        target="_blank">jeffrey.c.becker@nasa.gov</a>></span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On
                        06/10/2015 11:46 AM, Burlen Loring wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
                          solid;padding-left:1ex">
                          Hmm. If Bunyk ray cast doesn't work some thing
                          strange is going on as that is a software(non
                          gpu) algorithm and should always work.<br>
                          <br>
                          Can you get anything to show up using a small
                          test data? For example create a wavelet source
                          and apply a threshold (use default values) to
                          convert to unstructured data. If that works
                          maybe something with your input data, or size
                          of it.<br>
                        </blockquote>
                        <br>
                      </span>
                      It's a 500 by 500 by 500 grid of floats - is that
                      too big?
                      <div>
                        <div><br>
                          <blockquote class="gmail_quote"
                            style="margin:0 0 0 .8ex;border-left:1px
                            #ccc solid;padding-left:1ex">
                            <br>
                            On 06/10/2015 11:27 AM, Jeff Becker wrote:<br>
                            <blockquote class="gmail_quote"
                              style="margin:0 0 0 .8ex;border-left:1px
                              #ccc solid;padding-left:1ex">
                              On 06/10/2015 11:06 AM, Burlen Loring
                              wrote:<br>
                              <blockquote class="gmail_quote"
                                style="margin:0 0 0 .8ex;border-left:1px
                                #ccc solid;padding-left:1ex">
                                2 things to try: set the remote render
                                threshold to zero, and if that doesn't
                                get it to show up, change the mapper to
                                Bunyk ray cast.  One of those usually
                                works depending on what the cause of the
                                issue is.<br>
                              </blockquote>
                              <br>
                              I have both of those set - no luck. BTW,
                              this is ParaView 4.3.1 on an NVIDIA
                              backend. glxinfo shows:<br>
                              <br>
                              $ glxinfo | head -30<br>
                              name of display: :0.0<br>
                              display: :0  screen: 0<br>
                              direct rendering: Yes<br>
                              server glx vendor string: NVIDIA
                              Corporation<br>
                              server glx version string: 1.4<br>
                              server glx extensions:<br>
                                  GLX_EXT_visual_info,
                              GLX_EXT_visual_rating, GLX_SGIX_fbconfig,<br>
                                  GLX_SGIX_pbuffer, GLX_SGI_video_sync,
                              GLX_SGI_swap_control,<br>
                                  GLX_EXT_swap_control,
                              GLX_EXT_swap_control_tear,<br>
                                  GLX_EXT_texture_from_pixmap,
                              GLX_EXT_buffer_age,
                              GLX_ARB_create_context,<br>
                                  GLX_ARB_create_context_profile,
                              GLX_EXT_create_context_es_profile,<br>
                                  GLX_EXT_create_context_es2_profile,
                              GLX_ARB_create_context_robustness,<br>
                                  GLX_NV_delay_before_swap,
                              GLX_EXT_stereo_tree, GLX_ARB_multisample,<br>
                                  GLX_NV_float_buffer,
                              GLX_ARB_fbconfig_float,
                              GLX_EXT_framebuffer_sRGB,<br>
                                  GLX_NV_multisample_coverage<br>
                              client glx vendor string: NVIDIA
                              Corporation<br>
                              client glx version string: 1.4<br>
                              client glx extensions:<br>
                                  GLX_ARB_get_proc_address,
                              GLX_ARB_multisample, GLX_EXT_visual_info,<br>
                                  GLX_EXT_visual_rating,
                              GLX_EXT_import_context,
                              GLX_SGI_video_sync,<br>
                                  GLX_NV_swap_group, GLX_NV_video_out,
                              GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,<br>
                                  GLX_SGI_swap_control,
                              GLX_EXT_swap_control,
                              GLX_EXT_swap_control_tear,<br>
                                  GLX_EXT_buffer_age,
                              GLX_ARB_create_context,<br>
                                  GLX_ARB_create_context_profile,
                              GLX_NV_float_buffer,<br>
                                  GLX_ARB_fbconfig_float,
                              GLX_EXT_fbconfig_packed_float,<br>
                                  GLX_EXT_texture_from_pixmap,
                              GLX_EXT_framebuffer_sRGB,<br>
                                  GLX_NV_present_video,
                              GLX_NV_copy_image,
                              GLX_NV_multisample_coverage,<br>
                                  GLX_NV_video_capture,
                              GLX_EXT_create_context_es_profile,<br>
                                  GLX_EXT_create_context_es2_profile,
                              GLX_ARB_create_context_robustness,<br>
                                  GLX_NV_delay_before_swap,
                              GLX_EXT_stereo_tree<br>
                              <br>
                              <blockquote class="gmail_quote"
                                style="margin:0 0 0 .8ex;border-left:1px
                                #ccc solid;padding-left:1ex">
                                <br>
                                On 06/10/2015 11:00 AM, Jeff Becker
                                wrote:<br>
                                <blockquote class="gmail_quote"
                                  style="margin:0 0 0
                                  .8ex;border-left:1px #ccc
                                  solid;padding-left:1ex">
                                  Hi. I have an unstructured grid file
                                  that opens and displays in Surface
                                  Rendering mode. If I switch to Volume
                                  Rendering, I don't see any output. Any
                                  ideas?<br>
                                  <br>
                                  Thanks.<br>
                                  <br>
                                  -jeff<br>
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              <span class="">-- <br>
                <div>
                  <div dir="ltr"><font face="trebuchet ms, sans-serif"><i>|
                        Aashish Chaudhary <br>
                        | Technical Leader         <br>
                        | Kitware Inc.            <br>
                      </i></font>
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      <pre wrap="">_______________________________________________
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