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TBB support was very buggy.

  • It did not take precedence over QTconcurrent, so it was virtually used nowhere (apart in the ParallelSort)
  • It has out-of-bound access in distance computation.

The PR also refreshed the CMakeFile and code for better support of the most recent version of TBB themed "oneapi TBB) and dropped the version prior to 2022.0.
It probably fixes CloudCompare/CloudCompare#2247

@rjanvier rjanvier marked this pull request as draft November 20, 2025 17:41
@rjanvier rjanvier marked this pull request as ready for review November 20, 2025 21:37
@rjanvier rjanvier merged commit 940b2ff into master Nov 21, 2025
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@rjanvier rjanvier deleted the fix_TBB branch November 21, 2025 15:33
rjanvier added a commit to CloudCompare/CloudCompare that referenced this pull request Nov 21, 2025
Follow up of CloudCompare/CCCoreLib#126 that brings fixes for #2247
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C2M Distance sometimes returns NaN for very small distances

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