<div dir="ltr">Let me know how it goes. I just tried multiple viewports with vtkImageActor on my own machine, with the OpenGL2 backend, and everything worked fine. Also, many of the nightly VTK tests use multiple viewports with image rendering, e.g. Rendering/Image/Testing/Cxx/TestImageSliceMapperInterpolation.cxx<div><br></div><div>I'm using vtk-master, but the vtkImageActor and vtkImageSliceMapper code hasn't changed since VTK 7.0 in any way that should change the interaction between image rendering and viewports.</div><div><br></div><div> - David</div><div><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 29, 2016 at 9:25 AM, Doug Hoppes <span dir="ltr"><<a href="mailto:dhoppes@mbfbioscience.com" target="_blank">dhoppes@mbfbioscience.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Okay… I’ll see how hard it is to move our code back to OpenGL with the latest version and see if the problem persists.</span></p></div></div></blockquote></div></div></div></div>