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-
- Persistence of Vision Raytracer
- Version 2.1
- Known Bug Information
- -------------------------------
-
- The only verified bug that we have found but not fixed in POV-Ray 2.1
- is a problem with height fields which causes holes, missing sections
- or cracks. The POV-Ray Team is working on the problem but decided to
- not delay this release further. See WHATSNEW.DOC for the bugs we did
- fix.
-
- If you have problems with height fields and are able to re-compile
- the source code, the following changes work around the problem but
- it defeats much of the height field optimization and slows things
- appreciably.
-
- In HFIELD.C at lines 254-259 and 407-412 you should comment-out the
- lines....
-
-
- if(min_value(start->y,end->y) > (DBL)Block->max_y)
- return(FALSE);
-
- if(max_value(start->y,end->y) < (DBL)Block->min_y)
- return(FALSE);
-
- Of course if you remove these lines, the height fields render more slowly.
- It appears that the min/max values for the "blocks" are being calculated
- incorrectly at times.
-
- When a better fix is available we will release it.
-
- If you have any questions about POV-Ray, please contact
-
- Chris Young
- [POV-Team Coordinator]
-
- CIS: 76702,1655
- Internet: 76702.1655@compuserve.com
-
-
-