![](/i/fill.gif) |
![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: GrimDude
Subject: MegaPov radiosity slow down, and degenerate triangles?
Date: 11 Dec 1999 19:16:42
Message: <3852e96a@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
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] iso net
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Nathan Kopp
Subject: Re: MegaPov radiosity slow down, and degenerate triangles?
Date: 11 Dec 1999 19:37:05
Message: <3852ee31@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
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] netfree com> 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
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: Nieminen Juha
Subject: Re: MegaPov radiosity slow down, and degenerate triangles?
Date: 11 Dec 1999 19:40:50
Message: <3852ef12@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Nathan Kopp <Nat### [at] kopp com> 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 -*/
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
On Sat, 11 Dec 1999 18:15:22 -0600, "GrimDude" <gri### [at] netfree com>
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.
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
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
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
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] alpharay de> 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
>
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
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
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Hi, Paul. What about "ambient 0" under global_settings?
--
Alan - ako### [at] povray org - 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] alpharay de>
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
> }
>}
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
On Sun, 12 Dec 1999 16:47:59 -0800, Alan Kong <ako### [at] povrayNO-SPAM org>
wrote:
>What about "ambient 0" under global_settings?
Pardon me, Paul. That should have read, "ambient_light 0" under
global_settings.
--
Alan - ako### [at] povray org - 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
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
From: GrimDude
Subject: Re: MegaPov radiosity slow down, and degenerate triangles?
Date: 1 Jan 2000 03:51:11
Message: <386dbfff@news.povray.org>
|
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
please excuse me. It was 3.1a :)
Grim
Ron Parker <par### [at] fwi com> wrote in message
news:38585ba8.111517231@news.povray.org...
> On Sat, 11 Dec 1999 18:15:22 -0600, "GrimDude" <gri### [at] netfree com>
> 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.
>
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |