[vtkusers] Differences Result between CPU rendering and GPU rendering with VTK

[Elvis Stansvik]

One thing you could try to get rid of the woodgrain artifacts is to
enable jittering (UseJitteringOn()).

Elvis

2018-03-15 8:00 GMT+01:00 Stephen Zucker <zoequella at gmail.com>:
> Dear All,
>
> When i use same colorFunction、scalarOpacity, gradientOpacity to render the
> same Medical Image data, I found the rendered result of
> CPU(vtkFixedPointVolumeRayCastMapper) and GPU(vtkGPUVolumeRayCastMapper) are
> different.
> I think the CPU rendered result is better then GPU，the GPU rendered result
> has too many colourful spots and ribbon. But with GPU rendering, the
> operation is smoother.
> The rendered result is as follows:
> <http://vtk.1045678.n5.nabble.com/file/t342362/CPU.png>
> <http://vtk.1045678.n5.nabble.com/file/t342362/GPU.png>
>
> So can you help me to improve the rendering effect of the GPU?
>
> Thanks in advance,
>
> Zucker.
>
>
>
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