POV-Ray : Newsgroups : povray.binaries.images : A hair ball I coughed up Server Time
3 Jul 2024 01:12:05 EDT (-0400)
  A hair ball I coughed up (Message 1 to 8 of 8)  
From: jhu
Subject: A hair ball I coughed up
Date: 6 Oct 2014 03:35:01
Message: <web.543245d5a699f4b0d19b0ec40@news.povray.org>
Blender particles, export to Povray. Takes longer to render than I expected.


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From: Thomas de Groot
Subject: Re: A hair ball I coughed up
Date: 6 Oct 2014 04:14:17
Message: <54324f59@news.povray.org>
On 6-10-2014 9:33, jhu wrote:
> Blender particles, export to Povray. Takes longer to render than I expected.
>
Looking good. How many 'hairs' are there?

Thomas


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From: jhu
Subject: Re: A hair ball I coughed up
Date: 6 Oct 2014 10:10:01
Message: <web.5432a1ee342e6baed19b0ec40@news.povray.org>
Thomas de Groot <tho### [at] degrootorg> wrote:
> On 6-10-2014 9:33, jhu wrote:
> > Blender particles, export to Povray. Takes longer to render than I expected.
> >
> Looking good. How many 'hairs' are there?
>
> Thomas

505000 hairs. They're exported as sphere_sweeps.


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From: LanuHum
Subject: Re: A hair ball I coughed up
Date: 6 Oct 2014 13:50:01
Message: <web.5432d55e342e6bae7a3e03fe0@news.povray.org>
"jhu" <nomail@nomail> wrote:
> Blender particles, export to Povray. Takes longer to render than I expected.

Unfortunately, has no faster way of display of curved hair of Povray


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From: William F Pokorny
Subject: Re: A hair ball I coughed up
Date: 6 Oct 2014 22:43:41
Message: <5433535d$1@news.povray.org>
On 10/06/2014 03:33 AM, jhu wrote:
> Blender particles, export to Povray. Takes longer to render than I expected.
>
Looks cool.

As for render performance, I wonder if this not the kind of scene which 
would benefit from Pov-Ray 3.7's relatively new "BSP (Binary Space 
Partitioning) tree bounding" ?

I played with the option 3-4yrs back. For me it sometimes helped, but 
more often not. I though, tend to do a lot of scenes with just a few 
shapes. With 500K objects front to back maybe +BM2 would really help?

Bill P.


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From: jhu
Subject: Re: A hair ball I coughed up
Date: 7 Oct 2014 00:00:01
Message: <web.5433646c342e6baed19b0ec40@news.povray.org>
William F Pokorny <ano### [at] anonymousorg> wrote:
> On 10/06/2014 03:33 AM, jhu wrote:
> > Blender particles, export to Povray. Takes longer to render than I expected.
> >
> Looks cool.
>
> As for render performance, I wonder if this not the kind of scene which
> would benefit from Pov-Ray 3.7's relatively new "BSP (Binary Space
> Partitioning) tree bounding" ?
>
> I played with the option 3-4yrs back. For me it sometimes helped, but
> more often not. I though, tend to do a lot of scenes with just a few
> shapes. With 500K objects front to back maybe +BM2 would really help?
>
> Bill P.

+BM2 was set. It took 12 hours to render (vs. 10s in Blender), although 500k
hairs is also a little overkill for something this small.


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From: LanuHum
Subject: Re: A hair ball I coughed up
Date: 8 Oct 2014 12:30:01
Message: <web.54356606342e6bae7a3e03fe0@news.povray.org>
"jhu" <nomail@nomail> wrote:
>
> +BM2 was set. It took 12 hours to render (vs. 10s in Blender), although 500k
> hairs is also a little overkill for something this small.

In my version of the exporter if hair aren't bent, it is possible to use
alternative of sphere_sweep - cone
On a screenshot time of a render of a ball is well visible: 4 minutes at the
same 500000 particles (processor - i3)
You can address to the developer of the official exporter (Mr) that he added the
same opportunity


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From: jhu
Subject: Re: A hair ball I coughed up
Date: 12 Oct 2014 01:25:00
Message: <web.543a0fda342e6baed19b0ec40@news.povray.org>
"LanuHum" <Lan### [at] yandexru> wrote:
> "jhu" <nomail@nomail> wrote:
> >
> > +BM2 was set. It took 12 hours to render (vs. 10s in Blender), although 500k
> > hairs is also a little overkill for something this small.
>
> In my version of the exporter if hair aren't bent, it is possible to use
> alternative of sphere_sweep - cone
> On a screenshot time of a render of a ball is well visible: 4 minutes at the
> same 500000 particles (processor - i3)
> You can address to the developer of the official exporter (Mr) that he added the
> same opportunity

I see. Unfortunately, I combed the hairs. So they're not straight anymore. Well,
it's just a test render. I'll hopefully have more interesting stuff to show
later.


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