Looking at the mesa-artifacts-decomp.png image, it appears that you have many tubes that are coincident (or at least close to coincident). There might be z-buffer resolution problems. What happens if you run the geometry through D3?
-Ken On 1/15/10 10:28 AM, "burlen" <[email protected]> wrote: FYI, I re-organized the images illustrating the bug, and made a comparison of nvidia to mesa rendering on two cases 1) the artifacts 2) the parallel inconsistency, and removed the older images. 1) http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/mesa-artifacts.png http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/nvidia-no-artifacts-decomp.png 2) http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/mesa-artifacts-decomp.png http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/nvidia-no-artifacts.png burlen wrote: > So you are right these are artifacts not holes. Nasty looking ones at > that. zooming in enough makes the artifacts receded toward the egdes > of the tube. After some experimentation I'm finding that this has > something to do with mesa. It is reproducible only when using mesa. > Hardware rendering works fine, no artifacts. > > There also looks to be two things going on, 1) the artifacts, 2) > inconsistent selection of the visible faces on parallel runs. This is > shown here: > http://nashi-submaster.ucsd.edu/movies/PV/tube-filter-artifact/decomp-8-procs.png > > > I was using PV on this cluster fine back in dec to make very similar > figures with stream tubes and didn't see any of these issues... > > I added the dataset to reproduce to the bug report. > > Moreland, Kenneth wrote: >> It could be a rendering artifact. What happens when you zoom into >> the problem area? >> >> -Ken >> >> >> On 1/14/10 12:24 AM, "burlen" <[email protected]> wrote: >> >> Any ideas as to why tubes from the tube filter aren't closed >> surfaces >> now? screenshot: >> http://public.kitware.com/Bug/view.php?id=10139 >> >> _______________________________________________ >> 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 >> >> Follow this link to subscribe/unsubscribe: >> http://www.paraview.org/mailman/listinfo/paraview >> >> >> >> >> **** Kenneth Moreland >> *** Sandia National Laboratories >> *********** *** *** *** email: [email protected] >> ** *** ** phone: (505) 844-8919 >> *** web: http://www.cs.unm.edu/~kmorel >> <http://www.cs.unm.edu/%7Ekmorel> >> > **** Kenneth Moreland *** Sandia National Laboratories *********** *** *** *** email: [email protected] ** *** ** phone: (505) 844-8919 *** web: http://www.cs.unm.edu/~kmorel
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