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From: Marcus Fritzsch
Subject: Beta10-Linux Segmentation Fault
Date: 22 Jan 2002 11:31:45
Message: <3C4D93F1.2000005@gmx.de>
Hi,

sometimes i render a scene which uses Photon-Mapping, POV segfaults when 
sortin Photons!

I use Pov 3.5Beta10 Linux

My Computer:
CPU: AMD TB 1200MHz
RAM: 256MB (384MB Swap)
OS:  Debian GNU/Linux sid, kernel 2.4.17

I TRyed to track the segfault and ran pov with gdb, it says following:

  ,-----
  | Program received signal SIGSEGV, Segmentation fault.
  | swapPhotons (a=562718, b=562593) at photons.cpp:1675
  | 1675	photons.cpp: No such file or directory.
  |	in photons.cpp
  `-----

the scene which i wanted to render is not mine and pretty large (for my 
uses)...

mfg
	-marcus


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Attachments:
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From: Mark Gordon
Subject: Re: Beta10-Linux Segmentation Fault
Date: 22 Jan 2002 14:19:58
Message: <pan.2002.01.22.14.19.53.945662.20785@povray.org>
Can you email me the scene file(s)?  Or is that prohibited since it's not
your scene?

-Mark Gordon

On Tue, 22 Jan 2002 11:31:45 -0500, Marcus Fritzsch wrote:


> the scene which i wanted to render is not mine and pretty large (for my
> uses)...
> 
> mfg
> 	-marcus
>


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From:
Subject: Re: Beta10-Linux Segmentation Fault
Date: 23 Jan 2002 03:26:21
Message: <qlss4uo2mbo1ov1nq7r7r2bvj0d4ng1h0u@4ax.com>
On Tue, 22 Jan 2002 17:31:45 +0100, Marcus Fritzsch <mar### [at] gmxde> wrote:
> Hi,
>
> sometimes i render a scene which uses Photon-Mapping, POV segfaults when 
> sortin Photons!
>
> I use Pov 3.5Beta10 Linux

could it be something similiar to the

Subject: crash with photons, union, ior, lathe
Date: 16 Jan 2002 07:20:14
http://news.povray.org/vfra4u0ndv4rf951196881cpt842an4906%404ax.com

?

ABX


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From: Marcus Fritzsch
Subject: Re: Beta10-Linux Segmentation Fault
Date: 23 Jan 2002 14:33:02
Message: <3C4F0FF3.2010408@gmx.de>
Mark Gordon wrote:

> Can you email me the scene file(s)?  Or is that prohibited since it's not
> your scene?


I could... but here's the link!! :)

http://www.tabsnet.com/galerie/fantasy/fantgal.php3


bye
	-marcus


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From: Marcus Fritzsch
Subject: Re: Beta10-Linux Segmentation Fault
Date: 23 Jan 2002 14:35:59
Message: <3C4F10A3.8060501@gmx.de>
Hi,


You wrote:

> could it be something similiar to the
> 
> Subject: crash with photons, union, ior, lathe
> Date: 16 Jan 2002 07:20:14
> http://news.povray.org/vfra4u0ndv4rf951196881cpt842an4906%404ax.com

It could, but i noticed the bug also in a scene without any CDG or lathe 
objects... is it possible, that when i refract phtons for example with a 
glass sphere, and behind it is another object which refracts or reflects 
photons, that it crashes?

mfg
	-marcus


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From: Christoph Hormann
Subject: Re: Beta10-Linux Segmentation Fault
Date: 23 Jan 2002 15:29:08
Message: <3C4F1D04.F93D2D05@gmx.de>
Marcus Fritzsch wrote:
> 
> Hi,
> 
> sometimes i render a scene which uses Photon-Mapping, POV segfaults when
> sortin Photons!
> 

I can confirm this problem, it occurs while sorting photons and only seems
to happen with large numbers of photons.  WinPov has no problems with the
same scene file.

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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From: Mark Gordon
Subject: Re: Beta10-Linux Segmentation Fault
Date: 24 Jan 2002 00:12:43
Message: <3c4f97cb$1@news.povray.org>
On Wed, 23 Jan 2002 14:33:07 -0500, Marcus Fritzsch wrote:

> http://www.tabsnet.com/galerie/fantasy/fantgal.php3

Confirmed.

-Mark Gordon


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From: Marc-Hendrik Bremer
Subject: Re: Beta10-Linux Segmentation Fault
Date: 28 Jan 2002 09:44:10
Message: <3c5563ba@news.povray.org>
Christoph Hormann schrieb in Nachricht <3C4F1D04.F93D2D05@gmx.de>...

>I can confirm this problem, it occurs while sorting photons and only seems
>to happen with large numbers of photons.  WinPov has no problems with the
>same scene file.


But there was a problem like this sometimes ago in WinPov, too. I confirmed
such a problem IIRC. It occured only with large numbers of photons, too.

Marc-Hendrik


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From:
Subject: Re: Beta10-Linux Segmentation Fault
Date: 28 Jan 2002 09:50:07
Message: <e6pa5u0v2p7unt6tko5rntrfq67nqr7as6@4ax.com>
On Mon, 28 Jan 2002 15:44:02 +0100, "Marc-Hendrik Bremer"
<Mar### [at] t-onlinede> wrote:
>I confirmed such a problem IIRC.

http://news.povray.org/search/advanced/?s=Marc-Hendrik+Bremer&g=povray.beta-test&a=1&p=0

ABX


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From: Marc-Hendrik Bremer
Subject: Re: Beta10-Linux Segmentation Fault
Date: 28 Jan 2002 10:19:51
Message: <3c556c17$1@news.povray.org>

>On Mon, 28 Jan 2002 15:44:02 +0100, "Marc-Hendrik Bremer"
><Mar### [at] t-onlinede> wrote:
>>I confirmed such a problem IIRC.
>
>http://news.povray.org/search/advanced/?s=Marc-Hendrik+Bremer&g=povray.beta
-test&a=1&p=0
>
>ABX

That did not help, since the thread was not started by me. :-)

I found the thread:

http://news.povray.org/3bb5d946$1@news.povray.org

WinPov doesn't crash anymore with the given scene. At least not in a quick
test.

Marc-Hendrik


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