Am 05.06.2015 um 23:39 schrieb clipka:
> Am 04.06.2015 um 23:17 schrieb Reuben Pearse:
>
>> I would like try some more UberPov renders using the LDraw models that
>> I've
>> already converted to POV-Ray - could you share the full code for your
>> example picture.

Here are the files that make up the scene. I might have made some minor 
changes by now.

NOTE: The include file "lego_colors_.inc" is NOT INTENDED FOR FURTHER 
DISTRIBUTION without my explicit consent. There are reasons I don't want 
it to be spread around outside this newsgroup.

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Thanks for the files.

I've tried rendering them using UberPOV, but I'm getting a really "grainy" 
image. I'm guessing it's to do with the radiosity settings (or the 
subsurface settings?).

Do you have the details of the final render settings you used for your 
image?

Thanks

Reuben


"clipka" <ano### [at] anonymousorg> wrote in message 
news:557219ef@news.povray.org...
> Am 05.06.2015 um 23:39 schrieb clipka:
>> Am 04.06.2015 um 23:17 schrieb Reuben Pearse:
>>
>>> I would like try some more UberPov renders using the LDraw models that
>>> I've
>>> already converted to POV-Ray - could you share the full code for your
>>> example picture.
>
> Here are the files that make up the scene. I might have made some minor
> changes by now.
>
> NOTE: The include file "lego_colors_.inc" is NOT INTENDED FOR FURTHER
> DISTRIBUTION without my explicit consent. There are reasons I don't want
> it to be spread around outside this newsgroup.
>
>

Post a reply to this message

Am 09.06.2015 um 07:41 schrieb Reuben Pearse:

> I've tried rendering them using UberPOV, but I'm getting a really "grainy"
> image. I'm guessing it's to do with the radiosity settings (or the
> subsurface settings?).
>
> Do you have the details of the final render settings you used for your
> image?

No, I don't recall what settings I used; but the highest-quality 
settings suggested in the comments (+am3 +r9 +a0.002 +ac0.99) should 
kill the graininess in any image(*).

(*unless it's /designed/ to be grainy, of course ;))

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Thanks - that's done the trick (the image is still rendering!)

I'm gonna try rendering some of the models I've converted from LDraw using 
your technique.

I've got my own version of the lego colours based on the POV-Ray code 
generated by this site:
http://guide.lugnet.com/color/


"clipka" <ano### [at] anonymousorg> wrote in message 
news:557683d7$1@news.povray.org...
> Am 09.06.2015 um 07:41 schrieb Reuben Pearse:
>
>> I've tried rendering them using UberPOV, but I'm getting a really 
>> "grainy"
>> image. I'm guessing it's to do with the radiosity settings (or the
>> subsurface settings?).
>>
>> Do you have the details of the final render settings you used for your
>> image?
>
> No, I don't recall what settings I used; but the highest-quality settings 
> suggested in the comments (+am3 +r9 +a0.002 +ac0.99) should kill the 
> graininess in any image(*).
>
> (*unless it's /designed/ to be grainy, of course ;))
>

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Have you made any progress, Reuben? Have you made the finishes work with 
L3P or LDView's POV-Ray output?

Michael

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You have two different global_settings blocks in your code. Is that 
intended? Do they interfere with each other?

Michael

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On 6/9/2015 2:12 AM, clipka wrote:
> Am 09.06.2015 um 07:41 schrieb Reuben Pearse:
>
>> I've tried rendering them using UberPOV, but I'm getting a really
>> "grainy"
>> image. I'm guessing it's to do with the radiosity settings (or the
>> subsurface settings?).
>>
>> Do you have the details of the final render settings you used for your
>> image?
>
> No, I don't recall what settings I used; but the highest-quality
> settings suggested in the comments (+am3 +r9 +a0.002 +ac0.99) should
> kill the graininess in any image(*).
>
> (*unless it's /designed/ to be grainy, of course ;))
>

Is this the only way to get rid of the speckles? The render is 
unfortunately taking too long at the highest quality settings.


Michael

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Am 06.09.2015 um 05:44 schrieb Mike Horvath:
> You have two different global_settings blocks in your code. Is that
> intended? Do they interfere with each other?

The first global_settings block is just for the assumed_gamma setting,
so that using the srgb keyword in colors_lego_.inc doesn't give warnings
or errors.

I have a habit of placing #include statements as early as possible in
any file, so the remainder of the global settings goes in a second
global_settings block.

POV-Ray is perfectly fine with multiple global_settings blocks,
especially if they contain entirely different settings as in this case;
if one setting would appear in both blocks, the second one would
generally win (but until then the first one might have an influence on
parsing).

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Am 06.09.2015 um 07:37 schrieb Mike Horvath:
> On 6/9/2015 2:12 AM, clipka wrote:
>> Am 09.06.2015 um 07:41 schrieb Reuben Pearse:
>>
>>> I've tried rendering them using UberPOV, but I'm getting a really
>>> "grainy"
>>> image. I'm guessing it's to do with the radiosity settings (or the
>>> subsurface settings?).
>>>
>>> Do you have the details of the final render settings you used for your
>>> image?
>>
>> No, I don't recall what settings I used; but the highest-quality
>> settings suggested in the comments (+am3 +r9 +a0.002 +ac0.99) should
>> kill the graininess in any image(*).
>>
>> (*unless it's /designed/ to be grainy, of course ;))
>>
> 
> Is this the only way to get rid of the speckles? The render is
> unfortunately taking too long at the highest quality settings.

I presume you're talking about noise-like speckles.

Generally speaking, there is no way around those speckles except for
shooting more rays. The most simple solution to achieve this is indeed
to use "anti-aliasing" mode 3 and increase its quality settings, but
there are other places to tweak:

- If the grainy speckles appear to be related to radiosity, increasing
the radiosity "count" parameter might be a more efficient way to reduce
the speckles. Note that you can also use the radiosity importance
mechanism in this case.

- If the grainy speckles appear to be related to subsurface scattering,
increasing the subsurface sample count might be a more efficient way to
reduce the speckles.

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On 9/6/2015 8:24 AM, clipka wrote:
> POV-Ray is perfectly fine with multiple global_settings blocks,
> especially if they contain entirely different settings as in this case;
> if one setting would appear in both blocks, the second one would
> generally win (but until then the first one might have an influence on
> parsing).
>

That's good to know.

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