[vtk-developers] Fixed point volume ray cast bug

[Bill Lorensen]

The developers of the FixedPointVolumeRayCastMapper were make it work
reliably and repeatable. Use # of threads > 1 at your own risk. That is the
purpose of the warning.




On Wed, Aug 7, 2013 at 10:22 AM, Geach, James <j.geach at herts.ac.uk> wrote:

>
> Dear list  -
>
> I submitted a bug report a while back about incorrect functionality in
> vtkFixedPointVolumeRayCastMapper when using >1 thread (
> http://www.vtk.org/Bug/view.php?id=13420)
>
> The issue is now closed with resolution 'fixed' in version 6.0.0. I have
> just installed version 6.0.0, and call the above function with threads=64.
> However I get the warning
>
> vtkFixedPointVolumeRayCastMapper (0x7ffdbe352010): Number of threads 64 is
>  > 1. This class does not produce repeatable results when the number of
> threads exceeds 1.
>
> Is this an incorrect warning and the functionality is really fixed, or
> does the problem still remain? The images I'm producing look ok, but this
> issue affects different renderings in different ways, and so isn't always
> immediately obvious.
>
> Thanks, Jim
>
>
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