POV-Ray: Newsgroups: povray.bugreports: Subimage rendering bug: Subimage rendering bug

POV-Ray : Newsgroups : povray.bugreports : Subimage rendering bug : Subimage rendering bug		Server Time 3 May 2024 18:42:00 EDT (-0400)

From: Marvin
Date: 4 Jun 2011 17:00:01
Message: <web.4dea9c01ba0ef89e99f0841a0@news.povray.org>

Dear fellaz,

I have found what seems to be a bug in povray for Linux 3.6.1

Persistence of Vision(tm) Ray Tracer Version 3.6.1 (g++ 4.1.2 @
 x86_64-unknown-linux-gnu)

The bug is seen in what follows:

$ povray +FN +W400 +H300 +SC300 +EC399 +Omodel-000001.png radiosity3a.pov
$ model-000001.png PNG 400x300 400x300+299+0 8-bit DirectClass 21.9kb
$ povray +FN +W400 +H300 +SR0 +ER99 +SC300 +EC399 +Omodel-000001.png
radiosity3a.pov
$ identify model-000001.png                                   identify: Not
enough image data `model-000001.png'.
identify: Corrupt image `model-000001.png'.

The problem seems to be in povray itself, since partial column rendering
produces correct image with same model, which is library example with came walk
around introduced.

Workaround is to use vertical column split in division of render jobs across
cores and machines, but images will be 400x300, and not column sized.

Best regds,
Marvin

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