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From: clipka
Subject: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 2 Jul 2010 03:48:39
Message: <4c2d99d7$1@news.povray.org>
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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.
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From: SharkD
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 2 Jul 2010 11:54:06
Message: <4c2e0b9e$1@news.povray.org>
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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
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SharkD <pos### [at] gmail com> wrote:
> 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
Great! would it be really pushing too much to ask such a feature request as to
make this mappable with bitmap files: emission_map, just like bump_map or
image_map?
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From: clipka
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 2 Jul 2010 21:34:48
Message: <4c2e93b8@news.povray.org>
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Am 02.07.2010 22:33, schrieb Mr:
> Great! would it be really pushing too much to ask such a feature request as to
> make this mappable with bitmap files: emission_map, just like bump_map or
> image_map?
Yes - at present, I guess it would ;-)
texture_map should get you there for now.
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From: Slime
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 3 Jul 2010 00:44:58
Message: <4c2ec04a$1@news.povray.org>
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> Great! would it be really pushing too much to ask such a feature
request as to
> make this mappable with bitmap files: emission_map, just like bump_map or
> image_map?
I think it would be more practical if 'finish' in general was mappable
with patterns, like pigments are. I mean, since we're dreaming. =)
- Slime
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clipka <ano### [at] anonymousorg> wrote:
> Am 02.07.2010 22:33, schrieb Mr:
>
> > Great! would it be really pushing too much to ask such a feature request as to
> > make this mappable with bitmap files: emission_map, just like bump_map or
> > image_map?
>
> Yes - at present, I guess it would ;-)
>
> texture_map should get you there for now.
I won't ask it, then... Thanks for hearing it without me asking and still
sparing my life. :)
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From: SharkD
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 3 Jul 2010 12:10:41
Message: <4c2f6101$1@news.povray.org>
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On 7/2/2010 4:33 PM, Mr wrote:
> Great! would it be really pushing too much to ask such a feature request as to
> make this mappable with bitmap files: emission_map, just like bump_map or
> image_map?
>
>
>
Do you mean like a glow map?
--
http://isometricland.com
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SharkD <pos### [at] gmailcom> wrote:
> On 7/2/2010 4:33 PM, Mr wrote:
> > Great! would it be really pushing too much to ask such a feature request as to
> > make this mappable with bitmap files: emission_map, just like bump_map or
> > image_map?
> >
> >
> >
>
> Do you mean like a glow map?
>
>
>
> --
> http://isometricland.com
I meant to make like TV/ computer screens :)
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From: clipka
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 4 Jul 2010 05:27:32
Message: <4c305404$1@news.povray.org>
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Am 03.07.2010 23:25, schrieb Mr:
>>> Great! would it be really pushing too much to ask such a feature request as to
>>> make this mappable with bitmap files: emission_map, just like bump_map or
>>> image_map?
> I meant to make like TV/ computer screens :)
You might try modeling it via the LCD approach: An emission object as
backlight, and a filtering one right in front.
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From: Le Forgeron
Subject: Re: Beta 38 - NOTE: "AMBIENT" NO LONGER WORKS IN RADIOSITY SCENES
Date: 4 Jul 2010 14:13:27
Message: <4c30cf47$1@news.povray.org>
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Le 02/07/2010 09:48, clipka nous fit lire :
> 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.
Please revisit the stacker*.pov files, as:
stackernight.pov is now rendered in full black,
other stacker* get a significant change in colours/lights.
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