On Fri, Jun 24, 2016 at 1:10 PM, Paluszek, Lukasz < lukasz.palus...@airbus.com> wrote:
> It doesn’t happen all the time, I suppose you need a fairly large surface > dataset. I managed to reproduce the problem on a wavelet source (attached > state file), try increasing the number of elements if you do not see any > artifacts. I have bult Paraview from source on OpenSuse 13.1 but also > cross-checked with the Linux binaries from Paraview.org and had same > issues. There was no problem with the osmesa-llvm flavor though. > I couldn't reproduce this here on arch linux with a newer nVidia driver (367.27), so I'm suspicious that this is a driver bug that's affecting the new depth peeling implementation. Since you're building from source, can you try editing VTK/Rendering/OpenGL2/vtkOpenGLRenderer.cxx, and change line 322 if (dualDepthPeelingSupported) to if (false) in DeviceRenderTranslucentPolygonalGeometry, recompile using the OpenGL2 backend, and let me know if the issue goes away? I suspect it will since both the OpenGL1 backend and OpenGL2 mesa/llvm do not use the new code. I'll put together a patch to force the older peeling implementation via an environment variable to make the work-around easier to apply. Dave
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