The Persistence of Vision Raytracer (POV-Ray).

This is the legacy Bug Tracking System for the POV-Ray project. Bugs listed here are being migrated to our github issue tracker. Please refer to that for new reports or updates to existing ones on this system.


FS#8 - Improve Radiosity "Cross-Talk" Rejection in Corners

Attached to Project: POV-Ray
Opened by Christoph Lipka (clipka) - Friday, 08 May 2009, 21:10 GMT
Last edited by William F Pokorny (wfpokorny) - Monday, 06 March 2017, 15:44 GMT
Task Type Unimp. Feature/TODO
Category Backend → Radiosity
Status Tracked on GitHub
Assigned To Christoph Lipka (clipka)
Operating System All
Severity Low
Priority Low
Reported Version 3.70 beta 32
Due in Version Future release
Due Date Undecided
Percent Complete 0%
Votes 0
Private No


Near concave edges, radiosity samples may be re-used at a longer distance away from the edge than towards the edge; there is code in place to ensure this, but it only works properly where two surfaces meet roughly rectangularly, while failing near the junction of three surfaces or non-rectangular edges, potentially causing “cross-talk”.

It should be investigated how the algorithm can be improved or replaced to better cope with non-trivial geometry.

This task depends upon

Comment by Thorsten Fröhlich (thorsten) - Tuesday, 23 August 2011, 06:54 GMT

Christoph, I boldly assume this has been improved with all your radiosity changes?

Comment by Christoph Lipka (clipka) - Thursday, 25 August 2011, 15:18 GMT
  • Field changed: Due in Version (Undecided → Future release)

No, even in its current state Radiosity still offers room for improvement. I don’t intend to address it prior to the 3.7.0 release proper though.

Comment by William F Pokorny (wfpokorny) - Monday, 06 March 2017, 15:44 GMT
  • Field changed: Status (New → Tracked on GitHub)

Now tracked on github as issue #249.