Paul, Thanks for tracking this down. I think I know the problem. I remember changing vtkPVRenderView to accept LOD resolution as a normalized value between [0,1], clearly I forgot to update the GUI. I'll push a fix a post a patch.
Utkarsh On Thu, Jun 21, 2012 at 5:35 AM, Paul Melis <[email protected]> wrote: > Hi Utkarsh, > > I looked a bit into the code and the values used in > pqGlobalRenderViewOptions::applyChanges() seem to be okay, e.g. > > void pqGlobalRenderViewOptions::applyChanges() > { > ... > > if (this->Internal->enableLOD->isChecked()) > { > printf("pqGlobalRenderViewOptions::applyChanges(): > this->Internal->lodResolution->value() = %d\n", > this->Internal->lodResolution->value()); > settings->setValue("LODThreshold", > this->Internal->lodThreshold->value() / 10.0); > printf("pqGlobalRenderViewOptions::applyChanges(): setting > LODResolution to %d\n", 160-this->Internal->lodResolution->value() + 10); > settings->setValue("LODResolution", > 160-this->Internal->lodResolution->value() + 10); > > gives me output like > > pqGlobalRenderViewOptions::applyChanges(): > this->Internal->lodResolution->value() = 106 > pqGlobalRenderViewOptions::applyChanges(): setting LODResolution to 64 > > But when I look at the applied settings in > vtkGeometryRepresentation::ProcessViewRequest(), after adding a printf() > like this: > > void vtkPVRenderView::SetRequestLODRendering(bool enable) > { > if (enable) > { > this->RequestInformation->Set(USE_LOD(), 1); > printf("vtkPVRenderView::SetRequestLODRendering(): > this->LODResolution = %g\n", this->LODResolution); > this->RequestInformation->Set(LOD_RESOLUTION(), this->LODResolution); > } > else > > this always outputs > > vtkPVRenderView::SetRequestLODRendering(): this->LODResolution = 1 > > no matter what the slider is set to, leading to > vtkGeometryRepresentation::ProcessViewRequest() always setting the > decimator to 160^3: > > ... > // this is where we will look to see on what nodes are we going to > render and > // render set that up. > bool lod = this->SuppressLOD? false : > (inInfo->Has(vtkPVRenderView::USE_LOD()) == 1); > if (lod) > { > if (inInfo->Has(vtkPVRenderView::LOD_RESOLUTION())) > { > int division = static_cast<int>(150 * > inInfo->Get(vtkPVRenderView::LOD_RESOLUTION())) + 10; > printf("SETTING DECIMATOR TO %d^3 DIVISIONS\n", division); > this->Decimator->SetNumberOfDivisions(division, division, division); > } > ... > > Does this make any sense to you? > > Regards, > Paul > > PS: The other project we had contact on is on my todo-stack, hope to > pick it up again in the near future :-/ > > > On 06/20/2012 04:14 PM, Utkarsh Ayachit wrote: >> Ok, I do some funkiness in that regard. Let me try to track that down. >> >> Utkarsh >> >> On Wed, Jun 20, 2012 at 10:06 AM, Paul Melis <[email protected]> wrote: >>> Ah, missed that. But my issue is not that the LOD-rendering mesh is the >>> same as the fullres one (it's not, as expected), but that the LOD >>> resolution setting does not seem to influence the LOD mesh in my case. >>> Especially for a very large mesh I would expect 10^3 versus 160^3 to >>> make a whopping difference. >>> >>> On 06/20/2012 04:03 PM, Utkarsh Ayachit wrote: >>>> Look closely. They are not the same. Look the wireframing around the >>>> centre of the sphere closely. >>>> >>>> On Wed, Jun 20, 2012 at 9:53 AM, Paul Melis <[email protected]> wrote: >>>>> Hmmm, amiss at my end or in ParaView? The LOD and non-LOD views of your >>>>> sphere are the same it seems. >>>>> >>>>> On 06/20/2012 03:50 PM, Utkarsh Ayachit wrote: >>>>>> Something's amiss. Attached are images of what I see when I interact >>>>>> with a default sphere. >>>>>> >>>>>> Utkarsh >>>>>> >>>>>> On Wed, Jun 20, 2012 at 9:44 AM, Paul Melis <[email protected]> wrote: >>>>>>> Does the LOD render use quadric clustering by the way? >>>>>>> And if so, should the LOD resolution setting produce the same mesh >>>>>>> during interactive rendering as when applying a Quadric Clustering >>>>>>> filter to the same input with the same resolution settings? >>>>>>> >>>>>>> On 06/20/2012 03:40 PM, Paul Melis wrote: >>>>>>>> Hmm, maybe not a good test, as depending on the sphere resolution a the >>>>>>>> quadric clustering will produce the same results for a range of >>>>>>>> dimension settings (i.e. 10^3 and up) >>>>>>>> >>>>>>>> On 06/20/2012 03:36 PM, Paul Melis wrote: >>>>>>>>> I actually get the same result when using the builtin server. >>>>>>>>> >>>>>>>>> On 06/20/2012 03:34 PM, Paul Melis wrote: >>>>>>>>>> Same result, I see no difference in meshes used during interaction >>>>>>>>>> between 10x10x10 and 160x160x160 for LOD Resolution. Just to make >>>>>>>>>> sure: >>>>>>>>>> >>>>>>>>>> - LOD Threshold is checked, set to 0.00 MBytes >>>>>>>>>> - Remote Render Threshold is checked, set to 0 MBytes >>>>>>>>>> >>>>>>>>>> Paul >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On 06/20/2012 03:28 PM, Utkarsh Ayachit wrote: >>>>>>>>>>> Try reproducing with sphere source. Any luck? >>>>>>>>>>> >>>>>>>>>>> On Wed, Jun 20, 2012 at 9:26 AM, Paul Melis <[email protected]> >>>>>>>>>>> wrote: >>>>>>>>>>>> It's already at 0 (see below). >>>>>>>>>>>> >>>>>>>>>>>> Paul >>>>>>>>>>>> >>>>>>>>>>>> On 06/20/2012 03:16 PM, Utkarsh Ayachit wrote: >>>>>>>>>>>>> WHat is the LOD Threshold set to? Try setting it to 0. >>>>>>>>>>>>> >>>>>>>>>>>>> Utkarsh >>>>>>>>>>>>> >>>>>>>>>>>>> On Wed, Jun 20, 2012 at 6:07 AM, Paul Melis <[email protected]> >>>>>>>>>>>>> wrote: >>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>> >>>>>>>>>>>>>> I'm doing remote rendering with PV 3.14.0, with quite a large >>>>>>>>>>>>>> set (isosurface of 98M tris) on 16 render nodes, each with a >>>>>>>>>>>>>> GTX460 and 12 GB RAM (Linux 64-bit cluster btw). >>>>>>>>>>>>>> >>>>>>>>>>>>>> This model renders like a dog when interacting. I've checked the >>>>>>>>>>>>>> subsampling settings, compression settings and LOD settings to >>>>>>>>>>>>>> see make sure I'm actually using lower resolution rendering and >>>>>>>>>>>>>> model decimation during interaction. I have enabled LOD >>>>>>>>>>>>>> Threshold and set the value to 0 (to force LOD usage during >>>>>>>>>>>>>> interaction, per tooltip). >>>>>>>>>>>>>> >>>>>>>>>>>>>> But I don't see any difference in the actual decimated model >>>>>>>>>>>>>> used during interactive rendering for different LOD Resolution >>>>>>>>>>>>>> values (checked using surface-with-edges repr and rendering >>>>>>>>>>>>>> without subsampling). I also don't see how the value for LOD >>>>>>>>>>>>>> resolution relates to the actual model used. I would expect >>>>>>>>>>>>>> something like quadric clustering to be used, but when e.g. >>>>>>>>>>>>>> setting LOD resolution to 10x10x10 the model during interaction >>>>>>>>>>>>>> uses many more triangles than "10 per direction" (or per data >>>>>>>>>>>>>> piece assigned per process, when showing Process Id Scalars). >>>>>>>>>>>>>> >>>>>>>>>>>>>> I just don't see any difference between different LOD resolution >>>>>>>>>>>>>> settings. Am I missing a setting somewhere? >>>>>>>>>>>>>> >>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>> Paul >>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>> 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 >>>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> 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 >>>>>>>>> >>>>>>>> >>>>>>> >>>>> >>> > _______________________________________________ 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
