[Paraview] Differences between OpenGL and OpenGL2 versions of ParaView

Fri Aug 7 13:32:35 EDT 2015

Adam,

The problem is that the OpenGL2 implementation doesn't work correctly for
field-data arrays yet.
I've reported a bug: http://www.paraview.org/Bug/view.php?id=15627

We'll have in tracked down soon.

Utkarsh

On Mon, Aug 3, 2015 at 2:59 PM, Adam Lyon <lyon at fnal.gov> wrote:

> Hi Joachim, Do you want me to send in a bug report for these problems? I
> assume there's no work-around that I can do to make things work. Using
> OpenGL2 is quite a bit faster, so I'm hoping a fix can come out soon.
> Thanks! -- Adam
>
> *------*
>
> *Adam L. Lyon*
> *Scientist; Associate Division Head for Systems for Scientific
> Applications*
>
> Scientific Computing Division & Muon g-2 Experiment
> Fermi National Accelerator Laboratory
> 630 840 5522 office
> www.fnal.gov
> lyon at fnal.gov
>
> Connect with us!
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> On Fri, Jul 31, 2015 at 10:53 AM, Adam L Lyon <lyon at fnal.gov> wrote:
>
>> Hi Joachim - Yes, I noticed that the default color is now vtkBlockColors.
>> However I changed that to the "color" vector in my data and that change was
>> not honored by the program. Thanks, Adam
>>
>> *------*
>>
>> *Adam L. Lyon*
>> *Scientist; Associate Division Head for Systems for Scientific
>> Applications*
>>
>> Scientific Computing Division & Muon g-2 Experiment
>> Fermi National Accelerator Laboratory
>> 630 840 5522 office
>> www.fnal.gov
>> lyon at fnal.gov
>>
>> Connect with us!
>> Newsletter <http://www.fnal.gov/pub/today/>  |  Facebook
>> <https://www.facebook.com/Fermilab>  |  Twitter
>> <https://twitter.com/Fermilab>
>>
>> On Fri, Jul 31, 2015 at 2:41 AM, Joachim Pouderoux <
>> joachim.pouderoux at kitware.com> wrote:
>>
>>> Adam,
>>>
>>> The color difference can be explained by the default coloring mode
>>> introduced recently (before the git tag version you tested with).
>>> Multiblocks are now automatically colored by blocks. Toggle the Color
>>> Legend and see the coloring array, "vtkBlockColors" is selected wereas in
>>> previous version it was Solid Color I guess.
>>> Regarding the missing pieces, I can tell that with the same git version
>>> and with the OpenGL backend 1 (the old), all pieces are correctly drawn.
>>> What is specific is that this missing blocks (the data has like a global
>>> gemetry block + all the internal pieces) are the last block if the first
>>> level block hierarchy.
>>>
>>> Joachim
>>>
>>>
>>> *Joachim Pouderoux*
>>>
>>> *PhD, Technical Expert*
>>> *Kitware SAS <http://www.kitware.fr>*
>>>
>>>
>>> 2015-07-30 22:19 GMT+02:00 Adam Lyon <lyon at fnal.gov>:
>>>
>>>> Hi,  I'm trying to use ParaView built with OpenGL2, hoping to see some
>>>> speed improvement when I interact with my visualization. Indeed for a
>>>> complicated geometry I see significant speed up (e.g. ~25 fps with OpenGL2
>>>> vs. 5 fps with regular ParaView). But I also see serious errors in the
>>>> display. I've attached two images of our "g-2 muon storage ring" (never
>>>> mind what it actually is, though it is very cool :-) ..
>>>>
>>>> [image: Inline image 1]
>>>>
>>>> The first, mostly blue image, is from regular ParaView (downloaded Mac
>>>> binary 4.3.1 64 bit)  and is what the ring is supposed to look like. There
>>>> is a color vector selected and I've unchecked "Map scalars" so that the
>>>> colors are "true". And indeed the RGB color values in the vector are what
>>>> is shown on the display.
>>>>
>>>>
>>>> [image: Inline image 2]
>>>> The next image, with a chunk on the left side missing, is from the
>>>> OpenGL2 ParaView (Mac built from source 4.3.1-882-gbdceec7 64 bit)
>>>> configured identically as the other ParaView. So it should look identical
>>>> to the mostly blue picture. Along with the missing chunk, you see the
>>>> colors look very wrong. What's even stranger is that the missing chunk is
>>>> really missing - not invisible - the visualization is made of multiblock
>>>> datasets, and right clicking where a structure should be only brings up the
>>>> link camera option.
>>>>
>>>> You can try this yourself -- see
>>>> https://www.dropbox.com/sh/900ocfc90v0w3r6/AACmqz8kVrGPUMnJbpxAFOzBa?dl=0
>>>> . The "gm2ring.zip" file has gm2ring.vtm (with the corresponding gm2ring
>>>> directory) and gm2ring.pvsm to restore my configuration.
>>>>
>>>> I'm looking forward to using the OpenGL2 version when it works better.
>>>> I hope this helps in working out its kinks (or hoping to find out I've
>>>> built or configured something incorrectly). Let me know how I can help!
>>>> Thanks! -- Adam
>>>> *------*
>>>>
>>>> *Adam L. Lyon*
>>>> *Scientist; Associate Division Head for Systems for Scientific
>>>> Applications*
>>>>
>>>> Scientific Computing Division & Muon g-2 Experiment
>>>> Fermi National Accelerator Laboratory
>>>> 630 840 5522 office
>>>> www.fnal.gov
>>>> lyon at fnal.gov
>>>>
>>>> Connect with us!
>>>> Newsletter <http://www.fnal.gov/pub/today/>  |  Facebook
>>>> <https://www.facebook.com/Fermilab>  |  Twitter
>>>> <https://twitter.com/Fermilab>
>>>>
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>>>
>>
>
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