[vtkusers] Rendering XYZRGBA segfaults randomly while XYZ doesn't in qvtkwidget subclass

Oon-Ee Ng ngoonee.talk at gmail.com
Wed Jan 14 03:31:40 EST 2015

Additional point to note from more testing today:-

1. Adding a half second delay between calls to showPointCloud(...)
seems to alleviate the crashing as well as the artifacts.

2. Adding a mutex so data cannot be double-accessed in
VTKPointCloudWidget does NOT alleviate the crashing or artifacts, but
seems to help a bit (higher chance of running for more than 1 or 2

3. Removing NAN values from the point cloud does not seem to help appreciably

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