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On Sun, 06 Mar 2011 14:12:50 -0400, Jim Holsenback wrote:
> dang ... that's looking pretty good there Rob!
Very cool work, Rob. This should be a sample image, or at least in the
hall of fame.
Jim
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> I suppose I'll wait until RC4 to do more SSLT; it's a real pain having to use
> slow layered textures for the pigments, and the SSLT/radiosity/emission
> artifacts in RC3 drive me bonkers!
>
> So, I'm calling this one done for now. Rendered in 17.5 hrs.
>
> Cheers,
> Rob
>
> -------------------------------------------------
> www.McGregorFineArt.com
>
>
There is no real need to use layered textures.
You can apply a pattern to SSLT. You just need to use a texture_map. The
pigment don't realy mather.
box{-1 1 texture {agate texture_map{
[0 finish{subsurface{<25, 24, 22>, <0.007, 0.008, 0.009> }]
[1 finish{subsurface{<0.8, 0.3, 0.01>,<0.0021, 0.0025, 0.00946> } ]
}
scale 0.4
}
interior{ior 1.43}
}
This gives an agate pattern that closely match the pigment.
Alain
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>> I suppose I'll wait until RC4 to do more SSLT; it's a real pain having
>> to use
>> slow layered textures for the pigments, and the SSLT/radiosity/emission
>> artifacts in RC3 drive me bonkers!
>>
>> So, I'm calling this one done for now. Rendered in 17.5 hrs.
>>
>> Cheers,
>> Rob
>>
>> -------------------------------------------------
>> www.McGregorFineArt.com
>>
>>
>
> There is no real need to use layered textures.
>
> You can apply a pattern to SSLT. You just need to use a texture_map. The
> pigment don't realy mather.
>
> box{-1 1 texture {agate texture_map{
> [0 finish{subsurface{<25, 24, 22>, <0.007, 0.008, 0.009> }]
> [1 finish{subsurface{<0.8, 0.3, 0.01>,<0.0021, 0.0025, 0.00946> } ]
> }
> scale 0.4
> }
> interior{ior 1.43}
> }
>
> This gives an agate pattern that closely match the pigment.
>
>
>
> Alain
Oups, missing closing braces in the finishes.
Alain
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On 06/03/2011 5:29 PM, Robert McGregor wrote:
> I suppose I'll wait until RC4 to do more SSLT; it's a real pain having to use
> slow layered textures for the pigments, and the SSLT/radiosity/emission
> artifacts in RC3 drive me bonkers!
>
> So, I'm calling this one done for now. Rendered in 17.5 hrs.
>
Nice, very nice. RC4 for me too and I had to buy a laptop stand with fan
to cope with SSLT.
--
Regards
Stephen
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Alain <aze### [at] qwerty org> wrote:
> There is no real need to use layered textures.
>
> You can apply a pattern to SSLT. You just need to use a texture_map. The
> pigment don't realy mather.
>
> box{-1 1 texture {agate texture_map{
> [0 finish{subsurface{<25, 24, 22>, <0.007, 0.008, 0.009> }]
> [1 finish{subsurface{<0.8, 0.3, 0.01>,<0.0021, 0.0025, 0.00946> } ]
> }
> scale 0.4
> }
> interior{ior 1.43}
> }
>
> This gives an agate pattern that closely match the pigment.
>
> Alain
Thanks Alain, actually I've tried that approach and it's okay, but doesn't
really give the fine control over the look of the material that I want
artistically - those coefficients require too much hand-holding, trial & error,
and voodoo (for me anyway) to make them look "right."
With Christoph's new method of using pigments to color the scattering and
absorption it will be /so/ much easier to get a "right" result quickly. And
commenting out the subsurface component in a finish will (I assume) enable us to
do quick render tests of materials without waiting for all the subsurface
calculations. Which will also make it easy to render with-SSLT and without-SSLT
images for comparsion of the two techniques (as Christoph did with his ivory
die).
Cheers,
Rob
-------------------------------------------------
www.McGregorFineArt.com
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Am 05.03.2011 19:17, schrieb Robert McGregor:
> So, when's that next RC coming??
It's being delayed a bit, unfortunately.
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Am 06.03.2011 21:32, schrieb Alain:
> There is no real need to use layered textures.
>
> You can apply a pattern to SSLT. You just need to use a texture_map. The
> pigment don't realy mather.
>
> box{-1 1 texture {agate texture_map{
> [0 finish{subsurface{<25, 24, 22>, <0.007, 0.008, 0.009> }]
> [1 finish{subsurface{<0.8, 0.3, 0.01>,<0.0021, 0.0025, 0.00946> } ]
> }
> scale 0.4
> }
> interior{ior 1.43}
> }
>
> This gives an agate pattern that closely match the pigment.
Be aware that this is even slower than layered textures, as POV-Ray will
compute the subsurface effect twice - once for the 0 value, and once for
the 1 value - to compute a weighted average of those two textures.
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>Robert McGregor on date 05/03/2011 19:17 wrote:
> Jim Holsenback<jho### [at] povrayorg> wrote:
>> On 02/22/2011 03:50 PM, Stephen wrote:
>>> With a bit of a back light.
>>> I think I'll wait until the next RC before continuing.
>>>
>> cool subject choice ... i forget the artist but a dragon image was what
>> brought me to povray. hey where you been coming up with the cool test
>> objects ... bishop?
>
> Okay, back on-subject with an SSLT dragon, work-in-progress. I'm not really
> satisfied with the textures yet but it's getting there... I've posted the dragon
> mesh over in povray.binaries.misc so others can give it a try.
>
> So, when's that next RC coming??
>
> Cheers,
> Rob
>
> -------------------------------------------------
> www.McGregorFineArt.com
It is really a piece of fine POV-art.
;-)
Paolo
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On 3/7/2011 2:30 AM, clipka wrote:
> Am 05.03.2011 19:17, schrieb Robert McGregor:
>
>> So, when's that next RC coming??
>
> It's being delayed a bit, unfortunately.
Awwww :(
I'm sure there's a good reason. Can't wait! You got me back into poving
again. Thanks!
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Jim Henderson <nos### [at] nospamcom> wrote:
> On Sun, 06 Mar 2011 14:12:50 -0400, Jim Holsenback wrote:
>
> > dang ... that's looking pretty good there Rob!
>
> Very cool work, Rob. This should be a sample image, or at least in the
> hall of fame.
>
> Jim
Thanks guys, much appreciated :)
-------------------------------------------------
www.McGregorFineArt.com
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