[Paraview] Inconsistent client view in tiled-display mode

[Utkarsh Ayachit]

That expected behavior. In tile-display mode, the renderings on the
client are not meant to be accurate, but merely a guide to controlling
the actual visualization on the tile-display. As Dave said, the
geometry delivered to the client is a simplified version of the
original at best and hence the holes.

Utkarsh

On Thu, Aug 26, 2010 at 7:13 AM, David E DeMarle
<dave.demarle at kitware.com> wrote:
> 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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