> Am 04.06.2011 22:56, schrieb Marvin:
>
>> 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.
>
> This behaviour, while indeed incompatible with the PNG file format, is
> (or rather was) intentional. Old versions of POV-Ray (including 3.6x)
> used to do some pretty whacky things with some image formats.

  But it works fine for me, at least with my self-compiled version of 3.6.1:

 >Persistence of Vision(tm) Ray Tracer Version 3.6.1 (g++ 4.5.1 @
 > x86_64-unknown-linux-gnu)
 >...
 >Support libraries used by POV-Ray:
 >  ZLib 1.2.5, Copyright 1995-1998 Jean-loup Gailly and Mark Adler
 >  LibPNG 1.2.5, Copyright 1998-2002 Glenn Randers-Pehrson

  No corruption was found by identify, file or gimp, using the same exact
command-line with the original radiosity3.pov.

-- 
Jaime Vives Piqueres
		
La Persistencia de la Ignorancia
http://www.ignorancia.org

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