<div dir="ltr">For the first render of points your numbers seem reasonable. For subsequent renders you will find different tradeoffs on the old backend. Display Lists are typically slower for a first render but faster on subsequent renders. With them turned off the first render is fast but subsequent renders are not any faster. Subsequent renders with OpenGL2 should be fairly fast.</div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 3, 2017 at 8:13 PM, 张驭洲 <span dir="ltr"><<a href="mailto:yzhzhang@ipe.ac.cn" target="_blank">yzhzhang@ipe.ac.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br><br>Thank you all!<br><br>I'm using Kitware's binaries and 4.4 is with OpenGL 1 and 5.2 is with OpenGL 2. Now that this option has no impact on OpenGL2 backend, is there any other option (besides those mentioned in the User's Guide) that can improve the performance of PV 5.2? In my case, by turning off the display list, the overall performance of PV 4.4 is similar to that of PV 5.2.<br><br>-Zhang<br><blockquote name="replyContent" style="padding-left:5px;margin-left:5px;border-left:#b6b6b6 2px solid;margin-right:0">-----原始邮件-----<br>
<b>发件人:</b> "Ken Martin" <<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>><br>
<b>发送时间:</b> 2017年1月3日 星期二<br>
<b>收件人:</b> "Utkarsh Ayachit" <<a href="mailto:utkarsh.ayachit@kitware.com" target="_blank">utkarsh.ayachit@kitware.com</a>><br>
<b>抄送:</b> "David E DeMarle" <<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>>, "张驭洲" <<a href="mailto:yzhzhang@ipe.ac.cn" target="_blank">yzhzhang@ipe.ac.cn</a>>, "<a href="mailto:paraview@paraview.org" target="_blank">paraview@paraview.org</a>" <<a href="mailto:paraview@paraview.org" target="_blank">paraview@paraview.org</a>><br>
<b>主题:</b> Re: [Paraview] Still Render in PV5.2.0 takes longer time than in PV4.4.0<br><br><div dir="ltr">For the new OpenGL2 backend setting ImmediateModeRendering or UseDisplayLists or something similar has no impact. Those concepts are part of the legacy OpenGL API. So you should see no difference in timings with them turned on or off with the new OpenGL backend.</div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 3, 2017 at 9:42 AM, Utkarsh Ayachit <span dir="ltr"><<a href="mailto:utkarsh.ayachit@kitware.com" target="_blank">utkarsh.ayachit@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Tue, Jan 3, 2017 at 9:10 AM, David E DeMarle<br>
<<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>> wrote:<br>
> Is this with OpenGL1 or 2 back end? If you are using Kitware's binaries 4.4<br>
> will be OpenGL1 and 5.2 will be OpenGL2. If you built from source or got it<br>
> from a distro then it might be otherwise.<br>
<br>
A way to tell which type of build you're using is to loo at the title<br>
bar. For OpenGL1, the title bar says "Legacy Rendering Backend". Such<br>
a suffix is missing for OpenGL2 build.<br>
<br>
Utkarsh<br>
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</blockquote></div><br><br clear="all"><span class="HOEnZb"><font color="#888888"><div><br></div>-- <br><div class="m_1536363801044110973gmail_signature" data-smartmail="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br><a href="tel:(518)%20371-3971" value="+15183713971" target="_blank">518 371 3971</a><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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