Black artefacts when rendering overlapping low opaccity objects using pathtracing
Many overlapping objects at very low opacity result in black artifacts when rendering using the pathtracer.
Initial discussion in: https://discourse.paraview.org/t/path-tracer-rendering-bug-with-low-opacity-overlapping-objects/14279/2
Steps to reproduce:
- PointSource, 1000 points, 1 radius, Apply
- Elevation, Apply
- Color by elevation, enable opacity for surface
- PointSize 20
- Enable Raytracing, Enable pathtracer
One suggestion in Discourse was this could be due to the default maxPathLength
in vtkOSPRayRendererNode
the changing of which is not exposed in paraview. I tried to crudely test this out here pgges/paraview@938b4d83 but increasing the max path length did not have an effect.
Perhaps I did not set this up right?
Edited by pgges