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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Reason 1: Increasing the resolution 2X increases the compositing overhead by up to 4. Increasing the resolution 4X increases the compositing time by up to 16. It can be a noticeable difference
when rendering interactively.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Reason 2: There can be technical difficulties in rendering images that large. You are likely to have a rendering context of the original resolution. To render such large images with images/movies,
it renders image tiles and stitches them together. This adds further overhead and complication in rendering.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">Reason 3: Line width is measured in pixels. Changing the resolution of the image in this way will change the perceived line width.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">-Ken</span><span style="font-size:11.0pt;font-family:Calibri"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:Calibri;color:black">From: </span>
</b><span style="font-family:Calibri;color:black">Paraview-developers <paraview-developers-bounces@paraview.org> on behalf of Walter Scott <wascott@sandia.gov><br>
<b>Date: </b>Thursday, June 30, 2016 at 7:48 PM<br>
<b>To: </b>David E DeMarle <dave.demarle@kitware.com><br>
<b>Cc: </b>"paraview-developers@paraview.org" <paraview-developers@paraview.org><br>
<b>Subject: </b>Re: [Paraview-developers] [EXTERNAL] Re: Remind me - AA<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;color:#1F497D">OK, why can’t we do that? Have a mode that internally runs 2X or 4X resolution, does the compositing, and then shrinks back to what the user wants? Only turn it on when
3d lines are in the image?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:Calibri">From:</span></b><span style="font-size:11.0pt;font-family:Calibri"> David E DeMarle [mailto:dave.demarle@kitware.com]
<br>
<b>Sent:</b> Thursday, June 30, 2016 7:46 PM<br>
<b>To:</b> Scott, W Alan <wascott@sandia.gov><br>
<b>Cc:</b> paraview-developers@paraview.org<br>
<b>Subject:</b> [EXTERNAL] Re: [Paraview-developers] Remind me - AA</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><br>
Antialiasing confuses depth compositing.<o:p></o:p></p>
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<p class="MsoNormal">Better to save out images/movies at 4x resolution and resample outside of paraview.<o:p></o:p></p>
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<p class="MsoNormal"><br>
On Thursday, June 30, 2016, Scott, W Alan <<a href="mailto:wascott@sandia.gov">wascott@sandia.gov</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Why can’t we turn anti alias lines on? I am doing a feature edges, and it looks horrible.<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"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Alan<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">--------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">W. Alan Scott<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">ParaView Support Manager<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">SAIC<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Sandia National Laboratories, MS 0822<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Org 9326 - Building 880 A1-K<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">(505) 284-0932 FAX (505) 284-5619<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"> <o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
-- <br>
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<o:p></o:p></p>
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