POV-Ray : Newsgroups : povray.binaries.images : More POV archaeology: Bible Scene by Mark King : Re: More POV archaeology: Bible Scene by Mark King Server Time: 19 Jun 2019 07:31:02 GMT
  Re: More POV archaeology: Bible Scene by Mark King  
From: Cousin Ricky
Date: 4 May 2019 21:39:47
On 2019-05-04 3:22 PM (-4), Cousin Ricky wrote:
> On 2019-05-04 8:39 AM (-4), Jörg "Yadgar" Bleimann wrote:
>> It still took my Pentium IV single-core laptop 53 minutes to complete 
>> (1024 by 768, using AA 0.3)... I wonder how long it may have taken on 
>> Mark King's computer back in 1998!
> 
> My render looks a lot different; I think it's because of the radiosity { 
> brightness 3 } setting.  When I render it with +Q8, it looks like yours. 
>   My next step will be to lower the brightness, and maybe turn off the 
> ambient.
> 
> I used POV-Ray 3.5 for Unix (official Linux compile) with Version=3.1 on 
> the command line.  At +Q8, my Core i7 laptop took 21 minutes, 40 seconds 
> for 1000 by 750 (no AA because DoF is used), obviously using only 1 
> thread.  I do not remember the statistics for the radiosity render.

I modified the scene to lower the radiosity brightness and kill the 
ambient light.  I also added a pretrace_end, and deleted the 
distance_maximum so that the scene would render with POV 3.7.  Setting 
assumed_gamma to 1.0 changed the entire mood of the scene, so I left it 
at 2.2.

Rendering without AA took 5 minutes, 16 seconds of elapsed time using 8 
threads on my quad core.  POV 3.7 can do AA with DoF, and this is what I 
attached here.  The elapsed render time was 11 minutes, 31 seconds with 
+A0.3 +AM1 +R3.

This is a diff of my modifications:
--------------------[BEGIN DIFF]--------------------
12a13,17
 > /* Edited 2019-May-04 by Richard Callwood III to lower the radiosity 
brightness
 >  * and kill the ambient light.
 >  */
 > #version 3.1; // RC3, 2019-05-04
 >
30c35
<     brightness       3.3
---
 >     brightness       1 // RC3, 2019-05-04
32c37
<     distance_maximum 25.0
---
 >     //distance_maximum 25.0 // RC3, 2019-05-04
37a43
 >     pretrace_end     0.0025 // RC3, 2019-05-04
39a46
 >   ambient_light rgb 0 // RC3, 2019-05-04
---------------------[END DIFF]---------------------


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