[Paraview] Inconsistent client view in tiled-display mode

Fri Aug 27 09:11:38 EDT 2010

Then it is a bug, either in the code or the book where it says what
that checkbox should do.
Please file a bug on the bug tracker and we will fix it, making sure
we can support that mode.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109

On Thu, Aug 26, 2010 at 7:40 PM, Christoph Willing <c.willing at uq.edu.au> wrote:
> David,
>
> Maybe there are some version related differences involved here - I found a
> Client Collect checkbox & slider in Edit->Settings->Render
> View->Server->Tiled Display Parameters. However unchecking it and then
> changing some object parameter to force a re-render makes no difference to
> the client view here.
>
> I appreciate the logic behind decimating the client view but, as Stephane
> already mentioned, there are use cases where its not helpful. We have a
> similar use requirement to Stephane - needing to stream a lower res version.
> It would be great if the Client Collect checkbox would work as you suggest.
> Should I try a different version? I'm currently on a Linux build from the
> 3.8.0 source tarball.
>
>
> chris
>
>
>
> On 26/08/2010, at 9:55 PM, David E DeMarle wrote:
>
>> Un-check the checkbox to the left and the client should get the full res
>> geometry too.
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 28 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-371-3971 x109
>>
>>
>> On Thu, Aug 26, 2010 at 7:50 AM, Stephane PLOIX <stephane.ploix at edf.fr>
>> wrote:
>>
>> Hi,
>>
>> Since this thread is started, I would like to point out that saying that
>> display walls are only used if the data size is large is not true for
>> everybody.
>>
>> We have several use cases where having a correct rendering on the client
>> would be helpfull :
>> * display walls can be used for team meetings : the space is then used to
>> have several people view the same thing, not always very big in terms of
>> number of cells. In this case, it is very usefull to have the possibility to
>> pick/select some part of an object, and it is very diffcult to do so with a
>> decimated view.
>> * we also use some tools like virtualGL that enable image-based
>> collaboration by streaming the image of the client to a remote viewer : for
>> instance if someone was not able to join the meeting and still want to
>> participate and share the same view on his desktop. Sending a view of a
>> decimated object is not very helpfull...
>>
>> I would vote for having the possibility to have a full-resolution view on
>> the client, comments?
>>
>> Best,
>> Stephane
>>
>>
>>  <ATT00001.gif>
>>
>> Stephane PLOIX
>> Pilote Opérationnel - Visualisation scientifique
>> EDF - R&D
>> SINETICS
>> 1, Av du Général de Gaulle
>> 92140 Clamart
>>
>> stephane.ploix at edf.fr
>> Tél. : +33 (0) 1 47 65 51 10
>>  <ATT00002.gif>
>> Un geste simple pour l'environnement, n'imprimez ce message que si vous en
>> avez l'utilité.
>>
>>
>>
>>
>> dave.demarle at kitware.com
>> Envoyé par : paraview-bounces at paraview.org
>> 26/08/2010 13:14
>>
>> A
>> c.willing at uq.edu.au
>> cc
>> paraview at paraview.org
>> Objet
>> Re: [Paraview] Inconsistent client view in tiled-display mode
>>
>>
>>
>>
>>
>> This is probably intended behavior. What is the setting of the "Client
>> Collect" slider on the "Options"||"Preferences"->"Render
>> View"->"Server"->"Tile Display Parameters" tab of the Options panel?
>> Unless its checkbox is unchecked, ParaView either decimates the
>> geometry before sending it to the client or if larger than the
>> threshold, sends only bounding boxes. The reasoning being that if the
>> rendered geometry is big enough to require a tiled display to show, a
>> single GPU on the client is unlikely to be able to handle it a full
>> resolution.
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 28 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-371-3971 x109
>>
>>
>>
>> On Thu, Aug 26, 2010 at 2:50 AM, Christoph Willing <c.willing at uq.edu.au>
>> wrote:
>> > When running in tiled display mode, the view at the client is sometimes
>> > missing part of the geometry.
>> >
>> > The effect appears to differ according to the number of tiles in play.
>> > As an
>> > example just to demonstrate the effect:
>> > - with a 4x4 tiling, a simple cylinder with no capping starts losing
>> > bits of
>> > the cylinder when resolution setting is at 17. With a 4x5 tiling,
>> > distortion
>> > starts when resolution is 61. I have snapshots to show the effect at:
>> >    http://www.vislab.uq.edu.au/research/paraview/missingbits.html
>> >
>> > Of course it starts looking pretty bad with a real, more complicated,
>> > visualisation.
>> >
>> > Just to reiterate, this effect is just in the client viewer. The
>> > rendering
>> > on the tiled display itself is perfect.
>> >
>> > Is this a known phenomenon?
>> >
>> >
>> > chris
>> >
>> > (I'm running 3.8.0 built from tarball at paraview website).
>> >
>> >
>> > Christoph Willing                       +61 7 3365 8316
>> > QCIF Access Grid Manager
>> > University of Queensland
>> >
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> Christoph Willing                       +61 7 3365 8316
> QCIF Access Grid Manager
> University of Queensland
>
>