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Hi All:
I was using POV-Ray, UniMegaPov and POVMan on my R.H. 6.2 Linux box
without problem since yesterday... some days ago I updated the OS to
R.H. 7.0, and all worked fine: all the renderers where working properly.
Since then, I installed some other packages on the system without
aparent problem, but, at some point, all my renders started to show
hundreds of strange white spots everywhere on the output image, even
with the text-only version of POV-Ray.
I'm sure this is something about my system software. Perhaps I updated
some librarie that introuced some bug... but I can't find it. I
uninstaled or downgraded all the packages I recently installed, but with
no result.
This "strange white spots" mistery happened already to someone? Any
help is appreciated: after all the effort I made to have my new AMD
1,2Ghz working properly, it's eally fustrating that now I can't render
anything...
--
Jaime Vives Piqueres
La Persistencia de la Ignorancia
http://www.ignorancia.org/
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Are you outputting to PNG? Did you change (ie. update) your png and/or libz
libraries? If so you should try to compile povray against the new libraries.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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"Jaime Vives Piqueres" <jai### [at] ignorancia org> wrote:
> This "strange white spots" mistery happened already to someone? Any
> help is appreciated: after all the effort I made to have my new AMD 1,2Ghz
> working properly, it's eally fustrating that now I can't render
> anything...
>
I don't know if it is the same thing, but I do sometimes get strange white spots
in my images when I render under Linux; as far as I can see it seems to
happen on surfaces using reflection_exponent, however I haven't been able
to reproduce it reliably.
--
Margus Ramst
Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg
Home page http://www.hot.ee/margusrt
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Sounds like Ick! Try putting pov in an isolation tank, and if the symptoms
don't go away, you may have to medicate...
http://www.planet-pets.com/subject4.htm
Jaime Vives Piqueres wrote:
> Hi All:
>
> I was using POV-Ray, UniMegaPov and POVMan on my R.H. 6.2 Linux box
> without problem since yesterday... some days ago I updated the OS to
> R.H. 7.0, and all worked fine: all the renderers where working properly.
> Since then, I installed some other packages on the system without
> aparent problem, but, at some point, all my renders started to show
> hundreds of strange white spots everywhere on the output image, even
> with the text-only version of POV-Ray.
>
> I'm sure this is something about my system software. Perhaps I updated
> some librarie that introuced some bug... but I can't find it. I
> uninstaled or downgraded all the packages I recently installed, but with
> no result.
>
> This "strange white spots" mistery happened already to someone? Any
> help is appreciated: after all the effort I made to have my new AMD
> 1,2Ghz working properly, it's eally fustrating that now I can't render
> anything...
>
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On Tue, 26 Jun 2001 12:23:11 +0200, Jaime Vives Piqueres
<jai### [at] ignoranciaorg> wrote:
> I'm sure this is something about my system software. Perhaps I updated
>some librarie that introuced some bug... but I can't find it. I
>uninstaled or downgraded all the packages I recently installed, but with
>no result.
Is you glibc changed?
Did you compile pov with -ffash-math?
What level of optimization did you use when compiling?
Have you upgraded zlib or pnglib?
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG e-mail : pet### [at] tagpovrayorg
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So, we know who keeps fish.
Ken Cecka wrote:
>
> Sounds like Ick! Try putting pov in an isolation tank, and if the symptoms
> don't go away, you may have to medicate...
>
> http://www.planet-pets.com/subject4.htm
>
> Jaime Vives Piqueres wrote:
>
> > Hi All:
> >
> > I was using POV-Ray, UniMegaPov and POVMan on my R.H. 6.2 Linux box
> > without problem since yesterday... some days ago I updated the OS to
> > R.H. 7.0, and all worked fine: all the renderers where working properly.
> > Since then, I installed some other packages on the system without
> > aparent problem, but, at some point, all my renders started to show
> > hundreds of strange white spots everywhere on the output image, even
> > with the text-only version of POV-Ray.
> >
> > I'm sure this is something about my system software. Perhaps I updated
> > some librarie that introuced some bug... but I can't find it. I
> > uninstaled or downgraded all the packages I recently installed, but with
> > no result.
> >
> > This "strange white spots" mistery happened already to someone? Any
> > help is appreciated: after all the effort I made to have my new AMD
> > 1,2Ghz working properly, it's eally fustrating that now I can't render
> > anything...
> >
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Warp:
> Are you outputting to PNG? Did you change (ie. update) your png and/or >libz
libraries? If so you should try to compile povray against the new
No, it's not the just the output file, it happens with all the
formats, and even on the display window. It is random, too. Sometimes
the render crashes, but never at same point. Also, the white spots are
randomly placed, although they seem to have something to do with
reflection
calculations (they do not appear if the scene has no reflective
finishes).
And yes, I've compiled it, with many different flags, but obtained no
result. I even found on the net some aditional flags to optimize
binaries for the Athlon, which resulted in a faster rendering, but with
the white spots still there...
The only difference now with my last working system, is the
motherboard: all the rest of hard/soft is the same. Perhaps it's some
bug on the bios, or on the m.b. itself, but the fact is that now windows
works fine on the same machine! I'm really fustrated. I'm thinking now
it could be a processor issue, and perhaps I must compile pov with a
more updated compiler (the flags for athlon I found where different for
different compiler versions). I will try the most recent GCC, and also
AthlonGCC, wich seems specifically done for Athlon processors. I will
let you know if it helps...
Well, 2 months witouth tracing is really many time... I hope I will
resist the temptation of migrating to windows again... :(
--
Jaime Vives Piqueres
La Persistencia de la Ignorancia
http://www.ignorancia.org/
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Peter Popov wrote:
> Is you glibc changed?
> Did you compile pov with -ffash-math?
> What level of optimization did you use when compiling?
> Have you upgraded zlib or pnglib?
No, that all does not matter now, I've downgraded again to RH6.2, so
now the libraries are the same. I even restored all the hardware, except
the m.b., and it does nothing... With the old m.b., renders crashed more
often, but never showed white dots. Now, they crash rarely, but always
have the sopts on all reflective surfaces, and the crahses are silent.
Just now, while trying many different scenes, one showed an error
message
when crashing at the first pixel:
>Rendering error.
>internal failure in function solve_sq_hit1: 0, nan, nan
hmmmm.... Has anyone any idea of which situations can lead to this
error?
--
Jaime Vives Piqueres
La Persistencia de la Ignorancia
http://www.ignorancia.org/
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Jaime Vives Piqueres wrote:
>
> Warp:
> > Are you outputting to PNG? Did you change (ie. update) your png and/or >libz
libraries? If so you should try to compile povray against the new
>
> No, it's not the just the output file, it happens with all the
> formats, and even on the display window. It is random, too. Sometimes
> the render crashes, but never at same point. Also, the white spots are
> randomly placed, although they seem to have something to do with
> reflection
> calculations (they do not appear if the scene has no reflective
> finishes).
HAve you verified that the images display the same way within a secondary
image viewing program after rendering the image? Perhaps it has something
to do with the internal POV-Ray display rotines and a compatibility problem
with your video card.
--
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:
: With the old m.b., renders crashed more
: often, but never showed white dots.
Do you experience crashes with other programs as well? It might be
some problem with broken memory or similar.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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