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

[Sebastian Ordas]

Hi Matt,

QuickViewTest works fine. I will look deeper in its code and compare it with the vtkImageData creation as by itkImageToVTKImageFilter

more soon,
sebastian

On 9/24/2014 11:42 AM, Matt McCormick wrote:
> Hi Sebastian,
>
> What version of VTK are you using?  Does the QuickViewTest (built as
> part of the ITKVtkGlue tests) executable work for you?
>
> Thanks,
> Matt
>
> On Tue, Sep 23, 2014 at 11:26 PM, Sebastian Ordas
> <sebastian.ordas at gmail.com> wrote:
>> Dear List,
>>
>> 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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