[vtkusers] VTK6 migration and vtkImageData: "No scalar values found for texture input!" error in vtkOpenGLTexture

[Sebastian Ordas]

thank you, but it is still throwing the same error
this is killing me ...

I will keep trying

best regards,
sebastian

On 10/10/2014 02:32 p.m., Cory Quammen wrote:
> Sebastian,
>
> Perhaps in your problem code, you could invoke one of the
> SetInputArrayToProcess() variants on your vtkImageResliceMapper:
>
> http://www.vtk.org/doc/nightly/html/classvtkAlgorithm.html#a6bea16e1329609dbccce0ff8d2367484
>
> I believe the name of the scalars in the output of
> itkImageToVTKImageFilter is "scalars".
>
> Cory
>
> On Tue, Sep 30, 2014 at 5:02 PM, Sebastian Ordas
> <sebastian.ordas at gmail.com> wrote:
>> Hi Cory,
>>
>> I set up an example code, but I could not reproduce the error :-(
>> The example is attached anyway, in case someone wants to have a look at it
>>
>> I will keep searching the source of the error in my application and will
>> come back to the list with any finding
>>
>> thank you!
>> sebastian
>>
>>
>> On 29/09/2014 12:32 p.m., Cory Quammen wrote:
>>> Sebastian,
>>>
>>> Could you post a small, working example program that demonstrates the
>>> problem?
>>>
>>> Thank you,
>>> Cory
>>>
>>> On Mon, Sep 29, 2014 at 11:25 AM, Sebastian Ordas
>>> <sebastian.ordas at gmail.com> wrote:
>>>> Dear List,
>>>>
>>>> (I just realized I sent my message to ITK list instead of VTK!)
>>>>
>>>> I have started getting the error "No scalar values found for texture
>>>> input!"
>>>> coming from vtkOpenGLTexture, while porting my code to VTK6
>>>>
>>>> More precisely, I have a vtkImageData, generated by
>>>> itkImageToVTKImageFilter, which is mapped through vtkImageResliceMapper
>>>>
>>>> I have tried adding the following to itkImageToVTKImageFilter:
>>>>
>>>>     m_Importer->UpdateInformation();
>>>>     vtkStreamingDemandDrivenPipeline::SetUpdateExtent(
>>>>           m_Importer->GetOutputInformation(0 /*port number*/),
>>>>           0 /*piece*/,
>>>>           2 /*number of pieces*/,
>>>>           0 /*number of ghost levels*/);
>>>>     m_Importer->Update();
>>>>
>>>> .. but no luck!
>>>>
>>>> I have also tried:
>>>>
>>>> m_ImageData->GetPointData()->SetActiveAttribute (0,
>>>> vtkPointData::SCALARS);
>>>>
>>>> didn´t work either...
>>>>
>>>> Any hint?
>>>>
>>>> thank you,
>>>> sebastian
>>>>
>>>>
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