Nathan,

  Great job on this significant release!
  I have run into a few strange anomolies, though. First off, the radiosity
is far slower then SuperPatch 3.02. Second, even though the mesh problem has
been fixed, I now see strange triangles appearing where clips or bounds have
been used. However, my tests without radiosity tend to reproduce scenes as
they *used* to appear with radiosity on.
  I would post a scene, or source,  but most of what I have been doing are
very large mesh objects (on the order of 4Megs+). I will strip out my models
and retry, but I found this so curious I had to post.
  Have you seen any of these problems elsewhere?

--
GrimDude
gri### [at] isonet

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Radiosity in MegaPov (and previously in UVPov) has been significantly
changed and requries different settings.  Please read the documentation for
details.  You should be able to achieve better results, but you will have to
change the settings.

GrimDude <gri### [at] netfreecom> wrote...
> Nathan,
>
>   Great job on this significant release!
>   I have run into a few strange anomolies, though. First off, the
radiosity
> is far slower then SuperPatch 3.02. Second, even though the mesh problem
has
> been fixed, I now see strange triangles appearing where clips or bounds
have
> been used. However, my tests without radiosity tend to reproduce scenes as
> they *used* to appear with radiosity on.

Post a reply to this message

Nathan Kopp <Nat### [at] koppcom> wrote:
: Radiosity in MegaPov (and previously in UVPov) has been significantly
: changed and requries different settings.  Please read the documentation for
: details.  You should be able to achieve better results, but you will have to
: change the settings.

  He forgot to mention that you will get those better results A LOT faster
than with the usual radiosity... I really like it.
  See my post in p.b.images (thread titles "radiosity comparison between...").

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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On Sat, 11 Dec 1999 18:15:22 -0600, "GrimDude" <gri### [at] netfreecom>
wrote:

>  I have run into a few strange anomolies, though. First off, the radiosity
>is far slower then SuperPatch 3.02.

Where'd you get Superpatch 3.02?  That one was never released.

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Hi,

i've rendered yestarday my old scene, and noticed, that MegaPOV do not rendered
the light on the wall.
See:   http://www.povstudio.de/radiosity_bug.jpg  ->  upper: UV-POV 6.0
lower:  MegaPOV)

And thats right:   MegaPOV renders a little bit slower than UV-POV  (about 1:10
min. wiht MegaPOV and with UV-POV 6.0 about 1 min.).

And the bug from UV-POV 6.2 (holes in the wall) comes back after some renderings
with MegaPOV...  (http://www.povstudio.de/radiosity_uvpov2.jpg  -> this is the
UV-POV 6.2 rendering...look at the right wall).

Bye
  Paul

Homepage:    http://www.alpharay.de

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It was said to probably have bugs, and you just pointed out a couple
spectacular ones there looks like, if it is indeed error.  Are you following
the new instructions on using radiosity now with MegaPOV?  In the
radiosit.htm file...

Bob

"Paul Blaszczyk" <3d### [at] alpharayde> wrote in message
news:3853FBD8.1E04E819@alpharay.de...
>
> Hi,
>
> i've rendered yestarday my old scene, and noticed, that MegaPOV do not
rendered
> the light on the wall.
> See:   http://www.povstudio.de/radiosity_bug.jpg  ->  upper: UV-POV 6.0
> lower:  MegaPOV)
>
> And thats right:   MegaPOV renders a little bit slower than UV-POV  (about
1:10
> min. wiht MegaPOV and with UV-POV 6.0 about 1 min.).
>
> And the bug from UV-POV 6.2 (holes in the wall) comes back after some
renderings
> with MegaPOV...  (http://www.povstudio.de/radiosity_uvpov2.jpg  -> this is
the
> UV-POV 6.2 rendering...look at the right wall).
>
> Bye
>   Paul
>
> Homepage:    http://www.alpharay.de
>

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omniVERSE schrieb:

> It was said to probably have bugs, and you just pointed out a couple
> spectacular ones there looks like, if it is indeed error.  Are you following
> the new instructions on using radiosity now with MegaPOV?  In the
> radiosit.htm file...

Sure. I'm using the new radiosity-settings since UV-POV 6.0....
Here are the radiosity-settings i'm used in this scene (for UV-POV 6.0 and
MegaPOV):

global_settings {
max_intersections 32
max_trace_level 5
assumed_gamma 2.0

  ini_option "+QR"
  ini_option "Preview_Start_Size=16"
  ini_option "Preview_End_Size=4"

  radiosity {
    brightness       5
    count            250
    max_sample 2.5
    error_bound      0.5
    gray_threshold   0.0
    low_error_factor 0.5
    minimum_reuse    0.015
    nearest_count    10
    recursion_limit  1
  }
}

Here can ya see a scene rendered with UV-POV 6.0 with these settings (800x600
resolution):
    http://www.povstudio.de/scene_10.jpg

And here a small version rendered with MegaPOV (the same scene + settings):
    http://www.povstudio.de/scene_10_mp.jpg

Bye
  Paul

Homepage:    http://www.alpharay.de

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Hi, Paul. What about "ambient 0" under global_settings?

-- 
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer

On Mon, 13 Dec 1999 23:09:06 +0100, Paul Blaszczyk <3d### [at] alpharayde>
wrote:

>global_settings {
>max_intersections 32
>max_trace_level 5
>assumed_gamma 2.0
>
>  ini_option "+QR"
>  ini_option "Preview_Start_Size=16"
>  ini_option "Preview_End_Size=4"
>
>  radiosity {
>    brightness       5
>    count            250
>    max_sample 2.5
>    error_bound      0.5
>    gray_threshold   0.0
>    low_error_factor 0.5
>    minimum_reuse    0.015
>    nearest_count    10
>    recursion_limit  1
>  }
>}

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On Sun, 12 Dec 1999 16:47:59 -0800, Alan Kong <ako### [at] povrayNO-SPAMorg>
wrote:

>What about "ambient 0" under global_settings?

  Pardon me, Paul. That should have read, "ambient_light 0" under
global_settings.

-- 
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer

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please excuse me. It was 3.1a :)

Grim

Ron Parker <par### [at] fwicom> wrote in message
news:38585ba8.111517231@news.povray.org...
> On Sat, 11 Dec 1999 18:15:22 -0600, "GrimDude" <gri### [at] netfreecom>
> wrote:
>
> >  I have run into a few strange anomolies, though. First off, the
radiosity
> >is far slower then SuperPatch 3.02.
>
> Where'd you get Superpatch 3.02?  That one was never released.
>

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