POV-Ray : Newsgroups : povray.beta-test : media with a ratio 2 crashes POV Server Time
29 Jul 2024 14:18:54 EDT (-0400)
  media with a ratio 2 crashes POV (Message 1 to 4 of 4)  
From: bob h
Subject: media with a ratio 2 crashes POV
Date: 18 May 2002 12:05:44
Message: <3ce67bd8$1@news.povray.org>
While checking on ratio I came across this. I seldom use ratio, and in the
past perhaps I've never gone above 2 for it. Only found this out in the
course of helping someone else out.

camera {
    location -z
    look_at 0
}

media {
    scattering {1,1}
    method 1
    ratio 2.01
}

light_source {0,1
        spotlight
        radius 10
        falloff 20
        point_at y
}


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From: bob h
Subject: RC4, WinXP, P3, 800MHz, 512MB
Date: 18 May 2002 12:10:28
Message: <3ce67cf4$1@news.povray.org>
Forgot the usual info, sorry. In this subject line.

Plus, the error occured at ntdll.dll, if that helps any. OS specific, no
doubt.

bob h


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From: Steve
Subject: Re: media with a ratio 2 crashes POV
Date: 18 May 2002 13:02:17
Message: <slrnaed279.tn5.steve@zeropps.org.uk>
On Sat, 18 May 2002 11:05:32 -0500, bob h wrote:
> While checking on ratio I came across this. I seldom use ratio, and in the
> past perhaps I've never gone above 2 for it. Only found this out in the
> course of helping someone else out.

And not platform specific on Linux RH6.2 320M RAM PII 266 - POV-Ray 3.5 beta RC4 
I get:

Parsing...

Creating bounding slabs.
Scene contains 0 frame level objects; 0 infinite.

Displaying...
Using 24 bit TrueColor visual...
Segmentation fault (core dumped)

-- 
%HAV-A-NICEDAY                    email mailto:ste### [at] zeroppsuklinuxnet
Steve                                web http://www.zeropps.uklinux.net/
                                             or http://start.at/zero-pps
  5:59pm  up 29 days, 14:41,  1 user,  load average: 1.73, 1.45, 1.42


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From: Steve
Subject: Re: media with a ratio 2 crashes POV
Date: 18 May 2002 16:46:11
Message: <slrnaedecn.uc3.steve@zeropps.org.uk>
On 18 May 2002 13:02:17 -0400, Steve wrote:
> On Sat, 18 May 2002 11:05:32 -0500, bob h wrote:
>> While checking on ratio I came across this. I seldom use ratio, and in the
>> past perhaps I've never gone above 2 for it. Only found this out in the
>> course of helping someone else out.
> 
> And not platform specific on Linux RH6.2 320M RAM PII 266 - POV-Ray 3.5 beta RC4 
> I get:
> 
> Parsing...
> 
> Creating bounding slabs.
> Scene contains 0 frame level objects; 0 infinite.
> 
> Displaying...
> Using 24 bit TrueColor visual...
> Segmentation fault (core dumped)
> 

With some further experimentation I find that it renders a complete scene 
and outputs a readable ppm file before I get the segmentation/core dump
message.  The output file is complete and the size it should be and gives
no errors on reading with ImageMagic. 

-- 
sphere{z*5,1pigment{rgb.5}finish{reflection.3specular.5}}box{<-50,-3,-50>
<50,-2,50>pigment{checker/*\__\\__/  * \_\\__*/scale 2}finish{ambient.7}}
light_source/*__\\__\\__\\__\\__\(    ~ )\__\\__\\__\\__\\*/{<2,5,1>*4,1} 
/*\\__\\__\\__\\__\\__\\__\\__\\__\~  -/__\\__\\__\\__\\__\\*//* Steve */


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