I'm not sure if this is your issue, but you might try using a triangle filter on your data. For OpenGL we do not guarantee correct rendering of concave polygons. The triangle filter will convert a concave polygon into convex triangles which should render correctly.
On Tue, Oct 18, 2016 at 2:20 AM, Stefan Melber <[email protected]> wrote: > Hi, > > i found a rendering problem with cuts through polyhedral cells depending > on which rendering backend is used. For example in PV 5.1.2 compiled with > > VTK_RENDERING_BACKEND = OpenGL > > a cut looks like error.opengl.v5_1_2.png - there is a wrong shading and > some facets coming from the wrong starting point. > > Switching to OpenGL2 everything is fine (error.opengl2.v5_1_2.png). This > problem is the same with ParaView 5.2.0RC1 and OpenGL or OpenGL2 - however > there seems to be an additional (smaller) problem using OpenGL2: there are > some lines drawn outside of the shell - see error.opengl2.v5_2_0rc1.png > (cutted on a different position). > > The example cell is for testing is attached as "error.vtk" - cut e.g. in > x-direction on different positions to get the described effects. > > Best regards, > > Stefan > > > System: > o OpenSuse Tumbleweed > o Kernel: 4.7.6-1 > o Linux 64 bit > o NVidia Quadro 4000 / NV Driver v367.44 > > > > ================================================================ > > _/ *Dr. Stefan Melber-Wilkending* > _/_/ > _/ _/ Deutsches Zentrum für Luft- > _/_/_/_/_/_/_/_/_/_/ und Raumfahrt e.V. (DLR) > _/ _/ _/ _/ > _/ _/ _/ _/ German Aerospace Center > _/_/_/_/_/_/_/_/_/_/ Institute of Aerodynamics > _/ _/ _ _ and Flow Technology > _/_/ | \ | |_| Transport Aircraft Branch > _/ |_/ |_ | \ > Lilienthalplatz 7 > Fields of activities: 38108 Braunschweig > Germany > o Numerical Windtunnel Simulation > o Aero-Acoustic Windtunnel Design Phone : +49 531/295-2836 > o Numerical Optimization Fax. .: +49 531/295-2914 > o Visualization Techniques > o High-Lift Aerodynamics Email : [email protected] > o Glider-Aerodynamics Web ..: http://www.dlr.de/AS > > > ================================================================ > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at http://www.kitware.com/ > opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > > -- Ken Martin PhD Chairman & CFO Kitware Inc. 28 Corporate Drive Clifton Park NY 12065 518 371 3971 This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and destroy the original message. Thank you.
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Search the list archives at: http://markmail.org/search/?q=ParaView Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
