[Paraview] [Non-DoD Source] Re: [EXTERNAL] Re: Rendering issue with cross-sections in 3D

Fri Jun 17 08:00:46 EDT 2016

With regard to OpenGL1 vs OpenGL2 backends – I think that there’s an issue with 5.0.1 where the frontend/backend need to be compiled using the same OpenGL ….. so if you want to jump back to OpenGL1 on the backend, you’ll need a similarly configured frontend ……

________________________________
Rick Angelini
USArmy Research Laboratory
CISD/HPC Architectures Team
Phone:  410-278-6266

From: ParaView <paraview-bounces at paraview.org<mailto:paraview-bounces at paraview.org>> on behalf of David Lonie <david.lonie at kitware.com<mailto:david.lonie at kitware.com>>
Date: Friday, June 17, 2016 at 7:22 AM
To: Cory Quammen <cory.quammen at kitware.com<mailto:cory.quammen at kitware.com>>
Cc: Craig Christensen <craig.christensen at ucalgary.ca<mailto:craig.christensen at ucalgary.ca>>, "paraview at paraview.org<mailto:paraview at paraview.org>" <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: [Non-DoD Source] Re: [Paraview] [EXTERNAL] Re: Rendering issue with cross-sections in 3D

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Has anyone tested OpenGL1 vs. OpenGL2 backends on master?

It may be an issue with the recent changes to depth peeling. OpenGL1 will still use the old implementation, OpenGL2 (not on mesa) will use the new version.

On Fri, Jun 17, 2016 at 5:34 AM, Cory Quammen <cory.quammen at kitware.com<mailto:cory.quammen at kitware.com> < Caution-mailto:cory.quammen at kitware.com > > wrote:
Folks,

The bad Caution-news: I can reproduce this in ParaView 5.0.1 on a Mac given
the data files Craig shared.

The good Caution-news: I cannot reproduce it in my development version of
ParaView 5.1 RC1. Mind downloading that version of ParaView and giving
it a shot? I would guess there might have been a rendering bug in the
OpenGL2 backend in VTK that has since been fixed.

Thanks,
Cory

On Fri, Jun 17, 2016 at 3:15 AM, Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov> < Caution-mailto:wascott at sandia.gov > > wrote:
> Steve,
>
> I worry it sounds a bit like a bug.
>
> Can you provide us with a toy dataset (or non-toy, if necessary) that replicates the issue?  Also, really, really good directions (+Y, roll mouse wheel in 4 times)?
>
> Alan
>
> -----Original Message-----
> From: ParaView [Caution-mailto:paraview-bounces at paraview.org < Caution-mailto:paraview-bounces at paraview.org > ] On Behalf Of Steve Lamont
> Sent: Thursday, June 16, 2016 7:12 PM
> To: paraview at paraview.org<mailto:paraview at paraview.org> < Caution-mailto:paraview at paraview.org >
> Subject: [EXTERNAL] Re: [Paraview] Rendering issue with cross-sections in 3D
>
>> I'm using Paraview v5.0.1 to visualize some geophysical data, but I'm
>> running into a rendering issue. When I zoom in to my data sets, data
>> in the background randomly jumps in front of cross-sections in the
>> foreground.
>
> I'm running into a similar issue.
>
> I have three cross sections, along the three major axes, and they do not seem to occlude one another as one would expect.
>
> I've turned on depth peeling and have experimented with setting the maximum number of peels to no avail.
>
> I know this is a classic OpenGL depth sorting issue since I've run into myself back when I was coding such things.
>
> I've updated my nVidia drivers to what passes for the Latest and Greatest for Ubuntu Linux and I have a fairly recent graphics card (Quadro K2000D).  I'll be happy to supply any other system information I can if it'll help.
>
> Is there something else I need to switch on in order to get ParaView to operate in the "expected" manner?
>
> Thanx.
>
>                                                         spl
>
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--
Cory Quammen
R&D Engineer
Kitware, Inc.
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