OSPray pathtracer: erratic walls

[bastian]

I was a bit fast at deleting the unwanted images, but here is one example:

I think that one corner is always at the origin (0,0,0).

This looks like the same issue to me:

background error in raytracing

With paraview 5.9.1, I have a problem where the bundled ospray. Rendered images contain random errors where a large region of grey color may appear in the saved snapshot image. One such image is attached as an example. [snapshot_000080] I was using ospray path tracer and backplate. Normal images have clear white background, but in a long sequence of rendering, some images may randomly contain these grey errors. Some cases the grey area is large as the attached image, sometimes the grey area i…