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

[Matt McCormick]

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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