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.

Attached to Project: POV-Ray
Opened by Christoph Lipka - 2010-03-26
Last edited by Christoph Lipka - 2010-06-19

FS#89 - PPM output garbled for bit depths other than 8 bits

When choosing PPM output with a bit depth other than 8 bits per color channel (e.g. +FP16), POV-Ray messes up the colors (see thread news://news.povray.org:119/4babb48f$1@news.povray.org)

Closed by  Christoph Lipka
Saturday, 19 June 2010, 12:47 GMT
Reason for closing:  Fixed
Christoph Lipka commented on Friday, 26 March 2010, 14:47 GMT

There are actually two separate errors in the code, pertaining to (a) bit depths lower than 8 bpcc, and (b) bit depths greater than 16 bpcc. In both cases the respective formula to convert from floating point to integer is plain wrong.

Christoph Lipka commented on Friday, 26 March 2010, 16:34 GMT

fixed with change #4932


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