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From: Thomas de Groot
Subject: Egg
Date: 26 Apr 2017 11:22:02
Message: <590082da@news.povray.org>
Recently, I found a blackbird eggshell and wanted to model its texture. 
It gave me the opportunity to play again with some (UberPOV) settings I 
like and using subsurface scattering throughout the scene.

So, here we are with all objects showing subsurface scattering.

UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache. 
2h20' render time with 6 cores. This would be much longer if using 
+ac0.99 of course.

-- 
Thomas


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From: Stephen
Subject: Re: Egg
Date: 26 Apr 2017 13:00:28
Message: <590099ec$1@news.povray.org>
On 4/26/2017 12:21 PM, Thomas de Groot wrote:
> Recently, I found a blackbird eggshell and wanted to model its texture.
> It gave me the opportunity to play again with some (UberPOV) settings I
> like and using subsurface scattering throughout the scene.
>
> So, here we are with all objects showing subsurface scattering.
>
> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
> 2h20' render time with 6 cores. This would be much longer if using
> +ac0.99 of course.
>

Did you use stochastic rendering? It looks a little bit grainy. Other 
than that it is excellent.

+am3 - I see that you did.

-- 

Regards
     Stephen


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From: Jörg "Yadgar" Bleimann
Subject: Re: Egg
Date: 26 Apr 2017 13:42:06
Message: <5900a3ae$1@news.povray.org>
Hi(gh)!

On 26.04.2017 13:21, Thomas de Groot wrote:
> Recently, I found a blackbird eggshell and wanted to model its texture.
> It gave me the opportunity to play again with some (UberPOV) settings I
> like and using subsurface scattering throughout the scene.
>
> So, here we are with all objects showing subsurface scattering.
>
> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
> 2h20' render time with 6 cores. This would be much longer if using
> +ac0.99 of course.
>

A dragon's egg... and when reading your subject, I initially thought (or 
better, hoped!) you tried to render the same-named neutron star of the 
cheela!

That would be a cool project... but I would postpone it until I acquired 
reliable knowledge of spectral rendering, as to humans, the Egg is 
white-hot at about 9000 K, and any features on its surface are only 
discernible when viewed through cheela eyes!

See you in Khyberspace!

Yadgar

Now playing: Under the Orangish Sky (Michael Garrison)


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From: Alain
Subject: Re: Egg
Date: 26 Apr 2017 19:46:32
Message: <5900f918$1@news.povray.org>
Le 17-04-26 à 09:00, Stephen a écrit :
> On 4/26/2017 12:21 PM, Thomas de Groot wrote:
>> Recently, I found a blackbird eggshell and wanted to model its texture.
>> It gave me the opportunity to play again with some (UberPOV) settings I
>> like and using subsurface scattering throughout the scene.
>>
>> So, here we are with all objects showing subsurface scattering.
>>
>> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
>> 2h20' render time with 6 cores. This would be much longer if using
>> +ac0.99 of course.
>>
> 
> Did you use stochastic rendering? It looks a little bit grainy. Other 
> than that it is excellent.
> 
> +am3 - I see that you did.
> 

You bet he did.

no_cache and +am+ both enable stochastic rendering. The first in the 
radiosity evaluation, the second in antialiasing.


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From: Stephen
Subject: Re: Egg
Date: 26 Apr 2017 22:29:11
Message: <59011f37$1@news.povray.org>
On 4/26/2017 8:46 PM, Alain wrote:
> Le 17-04-26 à 09:00, Stephen a écrit :
>> On 4/26/2017 12:21 PM, Thomas de Groot wrote:
>>> Recently, I found a blackbird eggshell and wanted to model its texture.
>>> It gave me the opportunity to play again with some (UberPOV) settings I
>>> like and using subsurface scattering throughout the scene.
>>>
>>> So, here we are with all objects showing subsurface scattering.
>>>
>>> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
>>> 2h20' render time with 6 cores. This would be much longer if using
>>> +ac0.99 of course.
>>>
>>
>> Did you use stochastic rendering? It looks a little bit grainy. Other
>> than that it is excellent.
>>
>> +am3 - I see that you did.
>>
>
> You bet he did.
>

I don't gamble. At least with anything as trivial as money. ;)
I did not see Thomas's setting until I was about to post.


> no_cache and +am+ both enable stochastic rendering. The first in the
> radiosity evaluation, the second in antialiasing.

Thanks, I did not know that. At least the no_cache setting. I don't 
normally use radiosity myself.
Does that mean +am1 or +am2 enables stochastic rendering? I thought it 
was only +am3 that did that. But then I've only used UberPov when I was 
working on Dhalgren with Thomas and he set the quality settings.

I am an egg. :-)
Albeit a thousand-year-old egg. Yum yum.

-- 

Regards
     Stephen


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From: Thomas de Groot
Subject: Re: Egg
Date: 27 Apr 2017 06:49:32
Message: <5901947c$1@news.povray.org>
On 26-4-2017 15:42, Jörg "Yadgar" Bleimann wrote:
> Hi(gh)!
>
> On 26.04.2017 13:21, Thomas de Groot wrote:
>> Recently, I found a blackbird eggshell and wanted to model its texture.
>> It gave me the opportunity to play again with some (UberPOV) settings I
>> like and using subsurface scattering throughout the scene.
>>
>> So, here we are with all objects showing subsurface scattering.
>>
>> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
>> 2h20' render time with 6 cores. This would be much longer if using
>> +ac0.99 of course.
>>
>
> A dragon's egg... and when reading your subject, I initially thought (or
> better, hoped!) you tried to render the same-named neutron star of the
> cheela!
>
> That would be a cool project... but I would postpone it until I acquired
> reliable knowledge of spectral rendering, as to humans, the Egg is
> white-hot at about 9000 K, and any features on its surface are only
> discernible when viewed through cheela eyes!
>
> See you in Khyberspace!
>
> Yadgar
>
> Now playing: Under the Orangish Sky (Michael Garrison)

Only by chance I am afraid. I am not acquainted with Robert Forward's 
work so I am out. Still, a nice example of syzygy isn't it?

-- 
Thomas


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From: Thomas de Groot
Subject: Re: Egg
Date: 27 Apr 2017 06:59:16
Message: <590196c4$1@news.povray.org>
On 27-4-2017 0:29, Stephen wrote:
> On 4/26/2017 8:46 PM, Alain wrote:
>> Le 17-04-26 à 09:00, Stephen a écrit :
>>> On 4/26/2017 12:21 PM, Thomas de Groot wrote:
>>>> Recently, I found a blackbird eggshell and wanted to model its texture.
>>>> It gave me the opportunity to play again with some (UberPOV) settings I
>>>> like and using subsurface scattering throughout the scene.
>>>>
>>>> So, here we are with all objects showing subsurface scattering.
>>>>
>>>> UberPOV antialiasing set at +am3 +a0.01 +ac0.90 +r3 and using no_cache.
>>>> 2h20' render time with 6 cores. This would be much longer if using
>>>> +ac0.99 of course.
>>>>
>>>
>>> Did you use stochastic rendering? It looks a little bit grainy. Other
>>> than that it is excellent.
>>>
>>> +am3 - I see that you did.
>>>
>>
>> You bet he did.
>>
>
> I don't gamble. At least with anything as trivial as money. ;)
> I did not see Thomas's setting until I was about to post.
>
>
>> no_cache and +am+ both enable stochastic rendering. The first in the
>> radiosity evaluation, the second in antialiasing.
>
> Thanks, I did not know that. At least the no_cache setting. I don't
> normally use radiosity myself.
> Does that mean +am1 or +am2 enables stochastic rendering? I thought it
> was only +am3 that did that. But then I've only used UberPov when I was
> working on Dhalgren with Thomas and he set the quality settings.

Only +am3 sets stochastic rendering. I like it but it is much slower imo 
when set to high quality like +ac99. However, I may be wrong as I have 
not compared renders seriously. Clipka would know ;-) I little bit of 
grainy image is not a problem to me although it is difficult to balance 
quality versus (acceptable) render time. I am not always that patient.

With Dhalgren, I used +am2, so no stochastic rendering there.

>
> I am an egg. :-)
> Albeit a thousand-year-old egg. Yum yum.
>

Hum... I am a bit reluctant to have a bite :-)

-- 
Thomas


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From: Stephen
Subject: Re: Egg
Date: 27 Apr 2017 08:07:38
Message: <5901a6ca$1@news.povray.org>
On 4/27/2017 7:59 AM, Thomas de Groot wrote:
> On 27-4-2017 0:29, Stephen wrote:

>
> Only +am3 sets stochastic rendering. I like it but it is much slower imo
> when set to high quality like +ac99. However, I may be wrong as I have
> not compared renders seriously. Clipka would know ;-) I little bit of
> grainy image is not a problem to me although it is difficult to balance
> quality versus (acceptable) render time. I am not always that patient.
>

That is the crux of the matter. How long you are willing to wait for the 
quality you want.


> With Dhalgren, I used +am2, so no stochastic rendering there.
>

But I did a couple of runs with +am3 as it was the first time I had used 
UberPov.

>>
>> I am an egg. :-)
>> Albeit a thousand-year-old egg. Yum yum.
>>
>
> Hum... I am a bit reluctant to have a bite :-)
>

They are really nice. They are a bit like haggis, in the way the taste 
is linked to the way you catch them. ;-)

-- 

Regards
     Stephen


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From: Thomas de Groot
Subject: Re: Egg
Date: 27 Apr 2017 11:12:56
Message: <5901d238@news.povray.org>
On 27-4-2017 10:07, Stephen wrote:
> On 4/27/2017 7:59 AM, Thomas de Groot wrote:
>> On 27-4-2017 0:29, Stephen wrote:
>
>>
>> Only +am3 sets stochastic rendering. I like it but it is much slower imo
>> when set to high quality like +ac99. However, I may be wrong as I have
>> not compared renders seriously. Clipka would know ;-) I little bit of
>> grainy image is not a problem to me although it is difficult to balance
>> quality versus (acceptable) render time. I am not always that patient.
>>
>
> That is the crux of the matter. How long you are willing to wait for the
> quality you want.

Indeed. I am running a render now with slightly increased quality 
(+ac0.95 +r4) which is already more satisfactory. 80% done after 3h23'.

>
>
>> With Dhalgren, I used +am2, so no stochastic rendering there.
>>
>
> But I did a couple of runs with +am3 as it was the first time I had used
> UberPov.

I am a fan. :-)

>
>>>
>>> I am an egg. :-)
>>> Albeit a thousand-year-old egg. Yum yum.
>>>
>>
>> Hum... I am a bit reluctant to have a bite :-)
>>
>
> They are really nice. They are a bit like haggis, in the way the taste
> is linked to the way you catch them. ;-)
>

Really? Well, I shall have to taste haggis too then. ;-)

-- 
Thomas


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From: Thomas de Groot
Subject: Re: Egg
Date: 27 Apr 2017 11:29:39
Message: <5901d623@news.povray.org>
On 27-4-2017 13:12, Thomas de Groot wrote:

> Indeed. I am running a render now with slightly increased quality
> (+ac0.95 +r4) which is already more satisfactory. 80% done after 3h23'.
>

...which completed looks like this.

-- 
Thomas


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Attachments:
Download 'sslt_test_uber_03.png' (672 KB)

Preview of image 'sslt_test_uber_03.png'
sslt_test_uber_03.png


 

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