POV-Ray : Newsgroups : povray.binaries.images : erosion structures 2 (127k) Server Time
17 Aug 2024 08:23:36 EDT (-0400)
  erosion structures 2 (127k) (Message 1 to 10 of 10)  
From: Christoph Hormann
Subject: erosion structures 2 (127k)
Date: 29 Oct 2001 18:08:58
Message: <3BDDE180.B7B11090@gmx.de>
Finished this render today: 3 days, 21 hours.

I think i will not work much more on this particular setup, the sky surely
could use some improvements, but it's more interesting to try some
different shapes.

I followed R. Suzuki's suggestion to try using 'evaluate' to speed up the
render.  Although i don't have a direct comparison, i think it is
significantly faster.  Radiosity settings are slightly higher quality than
before.

The statistics show a number of DNoise calls being a new personal record
for me: nearly 257 billions, the previous maximum was 220 billions ;-)

What's probably more interesting is the histogram i generated for the
render, it can be found on:

http://www.schunter.etc.tu-bs.de/~chris/files/lnd_hist.png

It also shows that the horizon is not slower than the rest of the scene.

Christoph

-- 
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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lscp_erosion2.jpg


 

From: JRG
Subject: Re: erosion structures 2 (127k)
Date: 29 Oct 2001 18:18:24
Message: <3bdde3c0$1@news.povray.org>
Much better! Now the foreground looks great too, and as always the sky is
outstanding. Only the most distant clouds are a bit flat.
What about adding some dry plant...

--
Jonathan.
"Christoph Hormann" <chr### [at] gmxde> ha scritto nel messaggio
news:3BDDE180.B7B11090@gmx.de...
>
> Finished this render today: 3 days, 21 hours.
>
> I think i will not work much more on this particular setup, the sky surely
> could use some improvements, but it's more interesting to try some
> different shapes.
>
> I followed R. Suzuki's suggestion to try using 'evaluate' to speed up the
> render.  Although i don't have a direct comparison, i think it is
> significantly faster.  Radiosity settings are slightly higher quality than
> before.
>
> The statistics show a number of DNoise calls being a new personal record
> for me: nearly 257 billions, the previous maximum was 220 billions ;-)
>
> What's probably more interesting is the histogram i generated for the
> render, it can be found on:
>
> http://www.schunter.etc.tu-bs.de/~chris/files/lnd_hist.png
>
> It also shows that the horizon is not slower than the rest of the scene.
>
> Christoph
>
> --
> 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: Tony[B]
Subject: Re: erosion structures 2 (127k)
Date: 29 Oct 2001 20:36:19
Message: <3bde0413@news.povray.org>
That terrain is fascinating. An exquisite render, Christoph! I'll try to
remember the evaluate-trick. I'm downloading beta7 right now. I'm going to
do something with radiosity I think... :)


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From: Christoph Hormann
Subject: Re: erosion structures 2 (127k)
Date: 30 Oct 2001 03:20:11
Message: <3BDE62BB.3B28C6DF@gmx.de>
JRG wrote:
> 
> Much better! Now the foreground looks great too, and as always the sky is
> outstanding. Only the most distant clouds are a bit flat.

Yes, they are simply a flat texture, should be improved.

> What about adding some dry plant...
> 

Hmm, what kind of plants? Maybe some grass...  I'm a bit afraid of the
memory requirements, radiosity already takes 220 Mb.

Christoph

-- 
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: Christoph Hormann
Subject: Re: erosion structures 2 (127k)
Date: 30 Oct 2001 03:55:28
Message: <3BDE6B01.E6DA453E@gmx.de>
"Tony[B]" wrote:
> 
> That terrain is fascinating. An exquisite render, Christoph! 

Thanks!

> I'll try to remember the evaluate-trick. 

I will do some more experiments with the parameters, there's always the
danger of holes occurring, but i had luck this time...

Christoph

-- 
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: Warp
Subject: Re: erosion structures 2 (127k)
Date: 30 Oct 2001 07:55:41
Message: <3bdea34d@news.povray.org>
Christoph Hormann <chr### [at] gmxde> wrote:
: What's probably more interesting is the histogram i generated for the
: render, it can be found on:

: http://www.schunter.etc.tu-bs.de/~chris/files/lnd_hist.png

  Try inverting that image (ie. making it negative) with an image editing
program. Looks almost natural.

-- 
#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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From: Christoph Hormann
Subject: Re: erosion structures 2 (127k)
Date: 30 Oct 2001 08:16:16
Message: <3BDEA81F.511401CD@gmx.de>
Warp wrote:
> 
>   Try inverting that image (ie. making it negative) with an image editing
> program. Looks almost natural.
> 

Yes, indeed.  

The reason is probably that the slowest regions are those where most
radiosity samples are not taken from the sky but from the isosurface
itself.  

Christoph

-- 
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: Yadgar
Subject: Re: erosion structures 2 (127k)
Date: 1 Nov 2001 12:02:54
Message: <3BE16D30.AE7CE8B1@ndh.net>
Hi Tracers!

Christoph Hormann schrieb:

> The statistics show a number of DNoise calls being a new personal record
> for me: nearly 257 billions, the previous maximum was 220 billions ;-)
>

Monstrous... what computer do you use?!? Thunderbird 1.4 GHz with 2 gigs of
RAM or even greater?

See you in Khyberspace - http://www.geocities.com/electricafghan/index-e.html

Afghanistan Chronicle: http://www.ndh.net/home/bleimann/

Yadgar


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From: Yadgar
Subject: Re: erosion structures 2 (127k)
Date: 1 Nov 2001 12:02:59
Message: <3BE16DD4.8BA76717@ndh.net>
JRG schrieb:

> Much better! Now the foreground looks great too, and as always the sky is
> outstanding. Only the most distant clouds are a bit flat.
> What about adding some dry plant...

...or some shaggy Taliban troops sniping from behind the rocks!

See you in Khyberspace - http://www.geocities.com/electricafghan/index-e.html
Afghanistan Chronicle: http://www.ndh.net/home/bleimann/

Yadgar


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From: Christoph Hormann
Subject: Re: erosion structures 2 (127k)
Date: 1 Nov 2001 12:26:58
Message: <3BE185E1.9D532F81@gmx.de>
Yadgar wrote:
> 
> Monstrous... what computer do you use?!? Thunderbird 1.4 GHz with 2 gigs of
> RAM or even greater?
> 

512 Mb RAM are perfectly sufficient, it took just above 200 Mb and only
for radiosity, without only 300k.  Processor is an Athlon 1 GHz, but
that's just a matter of patience... ;-)

Christoph

-- 
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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