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clipka wrote:
> Am 07.06.2014 00:44, schrieb clipka:
>> Am 06.06.2014 21:31, schrieb Sean Day:
>>
>> HDRshop is probably the best tool for the job.
>
> Dang, forget about that one. It used to be free some years ago, but
> apparently they've made it payware.
>
That's OK as I have a copy of that, the only time I used it was with
megapov to make a HDR probe out of my PovComp entry. Fortunately I still
have a copy on an old backup drive. I will try blurring the probe as a
further test with the ant.
The non-blurred probe does not cause a problem with a sphere (attached).
Just about to start a blob render.
Also, I did a render with the building_probe (not from the same source)
and the ant looks better I think there is still a slight glow but not much.
Will upload the blob version later.
Sean
Post a reply to this message
Attachments:
Download 'sphere.png' (135 KB)
Download 'ant building_probe.png' (672 KB)
Preview of image 'sphere.png'
Preview of image 'ant building_probe.png'
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clipka wrote:
> Am 07.06.2014 00:44, schrieb clipka:
>> Am 06.06.2014 21:31, schrieb Sean Day:
>>
>>>> I wouldn't be surprised though if you were in the process of
>>>> discovering
>>>> a bug in the integration of radiosity and SSLT; so if you don't mind
>>>> digging a bit more, you'd do me a great favor.
>>>>
>>> Going to show my ignorance here but how do I blur the light probe?
>>
>> HDRshop is probably the best tool for the job.
>
> Dang, forget about that one. It used to be free some years ago, but
> apparently they've made it payware.
>
The single sphere blob also looks OK, when I opened the probe in HDRShop
I noticed some very bright areas and wonder if they are the cause (or
maybe if not the cause the reason it is more extreme with this probe,
also the Harbour3 probe looks OK in HDRShop and has a similar effect).
The bright areas I am referring to are in the attached probe.png.
Also, the single sphere blob (adjusted the size of the sphere component
to make it closer to the standard sphere) also looks OK, maybe something
to do with the thickness of the ant/blob or having multiple components
is the cause.
I have a few more ideas of things to test (obviously the blurred probe
with the ant being one) but maybe switching off the radiosity on the
subsurface parameters would be a good one?
Also, when I first noticed this glow problem I stacked 3 spheres and
rendered them and got a similar issue (hence my original I don't think
it is an issue with the blob statement). Will see if I can reproduce that.
Sean
Post a reply to this message
Attachments:
Download 'probe.png' (200 KB)
Download 'blob.png' (133 KB)
Preview of image 'probe.png'
Preview of image 'blob.png'
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clipka wrote:
> Am 07.06.2014 00:44, schrieb clipka:
>> Am 06.06.2014 21:31, schrieb Sean Day:
>>
>>>> I wouldn't be surprised though if you were in the process of
>>>> discovering
>>>> a bug in the integration of radiosity and SSLT; so if you don't mind
>>>> digging a bit more, you'd do me a great favor.
>>>>
>>> Going to show my ignorance here but how do I blur the light probe?
>>
>> HDRshop is probably the best tool for the job.
>
> Dang, forget about that one. It used to be free some years ago, but
> apparently they've made it payware.
>
Here is the problem reproduced by stacking 3 spheres.
Post a reply to this message
Attachments:
Download 'spherestack.png' (92 KB)
Preview of image 'spherestack.png'
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clipka wrote:
> Am 07.06.2014 00:44, schrieb clipka:
>> Am 06.06.2014 21:31, schrieb Sean Day:
>>
>>>> I wouldn't be surprised though if you were in the process of
>>>> discovering
>>>> a bug in the integration of radiosity and SSLT; so if you don't mind
>>>> digging a bit more, you'd do me a great favor.
>>>>
>>> Going to show my ignorance here but how do I blur the light probe?
>>
>> HDRshop is probably the best tool for the job.
>
> Dang, forget about that one. It used to be free some years ago, but
> apparently they've made it payware.
>
Forgot to add that the blurred probe did not make any difference..
Sean
Post a reply to this message
Attachments:
Download 'ant - gaussian blurred probe.png' (80 KB)
Preview of image 'ant - gaussian blurred probe.png'
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Am 07.06.2014 15:00, schrieb Sean Day:
> Here is the problem reproduced by stacking 3 spheres.
Looks good as a minimal test scene; can you file a bugreport on
bugs.povray.org with the scene file & probe attached?
Thanks a lot for your help!
Post a reply to this message
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The image looks like radiosity with a high recursion limit.
-Nekar Xenos
Post a reply to this message
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Nekar Xenos wrote:
> The image looks like radiosity with a high recursion limit.
>
> -Nekar Xenos
The image had recursion limit of 3, I have run a render with this set to
2 but still have the same issue.
Sean
Post a reply to this message
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clipka wrote:
> Am 07.06.2014 15:00, schrieb Sean Day:
>
>> Here is the problem reproduced by stacking 3 spheres.
>
> Looks good as a minimal test scene; can you file a bugreport on
> bugs.povray.org with the scene file & probe attached?
>
> Thanks a lot for your help!
>
Hi Clipka,
Bug report filed with the files required to reproduce the issue. I found
I can reproduce it using the default radiosity settings from the insert
menu and without AA the scene renders with the issue in a single pass (I
was using load/save for radiosity) in about 16 seconds on my PC so have
uploaded that example as I am guessing a faster render speed helps in
debugging these things.
If you need anything else let me know and many thanks for your prompt
assistance and the effort you and the whole POV Team put into Povray as
always.
Sean
Post a reply to this message
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clipka wrote:
> Am 07.06.2014 15:00, schrieb Sean Day:
>
>> Here is the problem reproduced by stacking 3 spheres.
>
> Looks good as a minimal test scene; can you file a bugreport on
> bugs.povray.org with the scene file & probe attached?
>
> Thanks a lot for your help!
>
Hi,
I just ran a test without the radiosity block and find I can still
reproduce the issue. The scene still has the subsurface settings and HDR
lighting but without radiosity and the effect is still present. The
additional benefit is this renders in 2 seconds so is quick to test.
Sean
Post a reply to this message
Attachments:
Download 'test.png' (347 KB)
Preview of image 'test.png'
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Sean Day wrote:
> clipka wrote:
>> Am 07.06.2014 15:00, schrieb Sean Day:
>>
>>> Here is the problem reproduced by stacking 3 spheres.
>>
>> Looks good as a minimal test scene; can you file a bugreport on
>> bugs.povray.org with the scene file & probe attached?
>>
>> Thanks a lot for your help!
>>
>
> Hi,
>
> I just ran a test without the radiosity block and find I can still
> reproduce the issue. The scene still has the subsurface settings and HDR
> lighting but without radiosity and the effect is still present. The
> additional benefit is this renders in 2 seconds so is quick to test.
>
>
> Sean
I decided to look into this a bit further as it seems very odd behaviour
(considering I have used SSLT before and not had issues). It seems the
problem is to do with the texture_map and using subsurface. Will update
the bug report and upload a new scene file.
Sean
Post a reply to this message
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