Hi Caspar,
Switching the opacity makes the whole mesh more opaque or transparent but
doesn't change the strange visualisation problem. The meshes I'm testing
are not supposed to be transparent at all.
Thanks for all your help.
Best wishes
On Mon, Oct 16, 2017 at 12:52 PM, Goch, Caspar Jonas <
[email protected]> wrote:
> Hi Dora,
>
>
>
> I know we had some issues with depth sorting for transparent surfaces over
> the years. Does your visualization change when you right click the surface
> in the data manager and switch the opacity between 1.0 and 0.99?
>
>
>
> Best,
>
> Caspar
>
>
>
> *Von:* Admin Uniapp [mailto:[email protected]]
> *Gesendet:* Montag, 16. Oktober 2017 12:44
>
> *An:* Goch, Caspar Jonas
> *Cc:* MITK
> *Betreff:* Re: [mitk-users] VTK mesh rendering issue
>
>
>
> Hi Caspar,
>
>
>
> Thanks for your reply. I tried to change the rendering properties and it
> seems that enabling the "Depth Sorting" option fix the problem temporarily.
> Does this give a hint what might be the underlying problem?
>
>
>
> The specs are:
>
>
>
> Ubuntu 16.04 LTS
>
> OpenGL version string: 3.0 Mesa 17.0.7
>
> Graphics: Intel HD Graphics 620 (Kabylake GT2)
>
> Processor: Intel Core i7-7600U CPU @ 2.80 GHz x 4
>
>
>
>
>
> On Mon, Oct 16, 2017 at 10:04 AM, Goch, Caspar Jonas <
> [email protected]> wrote:
>
> Hi Dora,
>
>
>
> sorry for the late reply. I am not sure what the cause might be. It seems
> to be on our side, so it might be due to specific options we set on the
> rendering context that differ from the default vtk options. It could be
> helpful to know the hardware and openGL specs for your systems.
>
> You could try changing some of the surface rendering properties to narrow
> down the culprit. (Just open the properties view and change e.g. the
> materal.Interpolation method)
>
>
>
> Best,
>
> Caspar
>
>
>
> *Von:* Admin Uniapp [mailto:[email protected]]
> *Gesendet:* Donnerstag, 5. Oktober 2017 16:47
> *An:* Goch, Caspar Jonas
> *Cc:* MITK
> *Betreff:* Re: [mitk-users] VTK mesh rendering issue
>
>
>
> Dear Casper,
>
> I just created a standalone app to visualise the same mesh with VTK alone
> and it seems fine (attached screenshot). The VTK version I used was the
> exact same as what comes with MITK 2016.3.0 super build.
>
> It appears that something in the MITK 2016.3.0 renderer window is not
> happy with my version of Ubuntu 16.04. I tested the same mesh both on a
> laptop and a desktop with Ubuntu 16.04 and they both had the same issue.
> They both have a clean newly installed version of Ubuntu. The exact same
> setup on older Ubuntu 14.04 doesn't suffer from the issue.
>
> Any ideas what I should be looking at?
>
> Many thanks as always.
>
>
>
>
>
> On Thu, Oct 5, 2017 at 10:29 AM, Goch, Caspar Jonas <
> [email protected]> wrote:
>
> Hi Dora,
>
>
>
> it might be something with the way we render surfaces. It might also be
> something with VTK itself. Could you render the surface in VTK directly and
> report whether the same thing happens there?
>
> I have opened a task for it [1]. Even if it is a VTK issue it would be
> interesting to know your laptops graphics chip.
>
>
>
> Best,
>
> Caspar
>
>
>
> [1] https://phabricator.mitk.org/T23485
>
>
>
>
>
> *Von:* Admin Uniapp [mailto:[email protected]]
> *Gesendet:* Freitag, 29. September 2017 16:25
> *An:* MITK
> *Betreff:* [mitk-users] VTK mesh rendering issue
>
>
>
> Hi everyone,
>
> I load a simple VTK mesh in MITK 2016.03 and the 3D view has issues
> rendering it properly. By rotating the mesh around half of its surface
> become transparent for no reason and you can see the other side of the
> mesh. I attached a screenshot too.
>
> This doesn't happen to me on my Linux desktop but only on the Linux Ubuntu
> laptop, so I guessed maybe there is something wrong with my graphics card
> driver but the same mesh on the same laptop renders normally on Paraview
> for instance.
>
> Any ideas?
>
> Many thanks
>
> Dora
>
>
>
>
>
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