POV-Ray : Newsgroups : povray.beta-test : Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES : Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES Server Time
1 Jul 2024 14:30:08 EDT (-0400)
  Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES  
From: SharkD
Date: 2 Jul 2010 11:54:06
Message: <4c2e0b9e$1@news.povray.org>
On 7/2/2010 3:48 AM, clipka wrote:
> As of beta 38, the "ambient" keyword no longer works in radiosity scenes.
>
> *IT'S NOT A BUG, IT'S A FEATURE*.
>
> Honestly.
>
> For legacy scenes using a "#version 3.6" statement, nothing has changed;
> ambient should work just as it did before.
>
> Otherwise, radiosity scenes will now be rendered as if "ambient_light"
> had been set to 0, i.e. materials with an "ambient" parameter will /not/
> seem to emit light anymore.
>
> To model light-emitting surfaces, a new finish parameter "emission" has
> been added, which will do just the same as "ambient" previously did,
> except that it is unaffected by the global ambient_light setting.
>
>
> It is also recommended to use the "emission" keyword in non-radiosity
> scenes for anything you want to look like glowing, and use "ambient"
> only to model local ambient illumination, so that transition to using
> radiosity is straightforward.


Makes sense, I guess, since IRL a light bulb is not "extra ambient" 
compared to something else.



-- 
http://isometricland.com


Post a reply to this message

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