POV-Ray : Newsgroups : povray.binaries.images : Monumental Failure (optical illusion) : Re: Monumental Failure (optical illusion) Server Time
30 Jul 2024 20:19:29 EDT (-0400)
  Re: Monumental Failure (optical illusion)  
From: Alain
Date: 26 Aug 2011 19:44:49
Message: <4e582ff1@news.povray.org>

> Attached is a new version, updated to take into account various comments. In
> particular:
> 1) an area lights is used now,
> 2) the sea has been replaced by grass disappearing in a fog, and
> 3) the moment now casts a shadow on the grass (this works better now in
> combination with the above two changes)
>
> The lack of blue gives it an entirely different feel and I quite like the
> result. Also nice is that the image is now quite different from other images I
> have made, as many featured a lot of blue (water, skies, blue tiles, etc). So
> thanks to all who have provided comments. Of course, feedback is still
> appreciated on this image as well. :-)
>
> Unfortunately, rendering time has exploded. It used to take less than two
> minutes to render the scene without anti-aliasing at 600x800. That has now
> become 25 minutes. This is even though area lights are adaptive, and the media
> is very basic (fixed density and intervals set to 1). It is because the grass,
> fog and area lights are each relatively expensive to render, and the combination
> especially so. At the moment, the area lights have no added value inside the fog
> (as there are no significant shadows there). However, I do not know yet of a
> good way to exploit this to speed up rendering time. :-(
>
> Cheers,
> Erwin

For your fog, are you using a media? Use a simple fog instead. fog is 
much faster than media, and in this case, should be a very good alternative.

Anyway, when using media, you should never use anything else than 
intervals 1, the effective default value.


Alain


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.