<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>From what I remember, it was added years ago to support offscreen rendering (probably added by myself).</div><div>It did not require external code to make it work, so it sounds like its broken if there is no ivar setting it.</div><div>Other methods have been developed and there are now better ways to do this. I think its ok to remove.</div><div><br data-mce-bogus="1"></div><div>Clint</div><div><br></div><span id="zwchr" data-marker="__DIVIDER__">----- On Sep 14, 2016, at 9:49 AM, Ken Martin <ken.martin@kitware.com> wrote:<br></span><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><div dir="ltr"><br><div>There is some code in vtkXOpenGLRenderWindow that handles opengl contexts based on a Pixmap. I cannot find any code in VTK that sets that ivar. Just lots of code for handling it. I am thinking of trying a topic to remove it but figured I should ask if anyone knows what it is about or if it is used.</div><br><div>Thanks</div><div>Ken</div><br clear="all"><br>-- <br><div class="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br>518 371 3971<br><div><span style="font-size: 10pt; font-family: Tahoma,sans-serif;" data-mce-style="font-size: 10pt; font-family: Tahoma,sans-serif;">This communication,
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