<div dir="ltr">Hi Louise,<div><br></div><div>Another option with the current binaries that you have is to ask for offscreen rendering in the code (Python). The window will still pop-up but will be black and the correct rendering pixels will be send to the web client.</div><div><br></div><div>Just add those 2 lines </div><div><br></div><div><div>simple.GetRenderView().UseOffscreenRenderingForScreenshots = 1</div><div>simple.GetRenderView().UseOffscreenRendering = 1</div></div><div><br></div><div>After the line <a href="https://github.com/Kitware/visualizer/blob/master/server/pvw-visualizer.py#L200">https://github.com/Kitware/visualizer/blob/master/server/pvw-visualizer.py#L200</a> but in the Python script you use to start Visualizer.</div><div><br></div><div>Seb</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 12, 2017 at 6:48 AM, Shawn Waldon <span dir="ltr"><<a href="mailto:shawn.waldon@kitware.com" target="_blank">shawn.waldon@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"><div><div><div>Hi Louise,<br><br></div>I have seen something like this before when using VTK render windows on Linux with NVidia drivers. There is a bug/feature in the NVidia driver where it only renders the part of the window that is shown onscreen. The workaround I used at the time was to enable offscreen rendering (which I think ParaView will do by default in the 5.5 when that is released in a few months). In ParaView master/5.5 it will be a command line option too --force-offscreen-rendering, but I think for 5.4 and earlier you would need to build ParaView with offscreen rendering enabled and then use that ParaView for Visualizer.<br><br></div>HTH,<br></div>Shawn<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Thu, Oct 12, 2017 at 5:54 AM, <span dir="ltr"><<a href="mailto:louise.davies@stfc.ac.uk" target="_blank">louise.davies@stfc.ac.uk</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<div link="#0563C1" vlink="#954F72" lang="EN-GB">
<div class="m_-4022868424263189096m_8688917796181535169WordSection1">
<p class="MsoNormal">Hello all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I seem to be observing odd behaviour on my ParaViewWeb server, in that the server works and a client can see their visualisation window fine provided a window does not overlap the ParaView window that is spawned when the user connects to
the server. If a new user connects, a new ParaView window is spawned in the exact same place as the previous one, and the first user now sees the image displayed on the second user’s server – seemingly because the first user’s ParaView window is underneath
the new user’s window.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">It’s not just overlapping ParaView windows either. If I connect to my server via VNC and place any window on top, it also obscures the user’s view, although it just blacks out the screen and doesn’t show the actual window itself to the
user. Attached are some screenshots of what I’m trying to describe, showing what is happening on the server desktop and what the result is in the Visualizer window.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Any ideas on what could possibly be going wrong would be greatly appreciated.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Kind regards,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Louise Davies<u></u><u></u></p>
</div>
</div>
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