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Kerkythea Rendering System • View topic - Blurry Glass
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Blurry Glass

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patricks

KT-Team
KT-Team

Posts: 3209

Joined: Mon Nov 14, 2005 2:39 am

Location: Palma de Mallorca / Spain

Post Mon May 26, 2008 8:20 am

Hi Cuore and everybody else :)

here is my test on recreating the first reference photo you have posted ( the green edge blurry glass ) ..... this one is 100% accurate but should be used with unbiased render methods like MLT, BiPT or MLT & BiPT because with PM & FG it can take long time to render ( but can be used with PM & FG too :wink: ) ....the glass have to have thickness .
the material pack contains the same "Green Edge Blurry Glass" with different Absorption Falloff values .... meaning that the first one is like the one you can see here with Falloff 10.00 and then the others have reduced values until 1.00 which gives a blurry glass that is perfect clear/white but still have green edges . The shininess value is the same for all of them ( 128.0 for both refraction and reflection ..... if you want less blurry reflection or reflection , increase the shininess values ( 500.00 or 750.00 can give good results ) if you want more blurry glass , reduce the shininess value ................. you dont have to increase or reduce both values (specular reflection shininess and reflection shininess ), you can adjust them like you want ( blurry glass with crisp reflection exist too :wink: )

one important thing is that you have to enable "Volume Lighting" under Settings - Scene - Global Settings because this material uses Absorption/Falloff

Edit: added another render so you can see how the changes to the values affect the blurry glass :wink:

Greetings Patrick
Attachments
blurry_glass_AA3 copy.jpg
value variation ....
p19551_865.jpg
reference photo
p19551_865.jpg (10.25 KiB) Viewed 18062 times
Green_Edge_Blurry_Glass_AA1.mat.zip
(33.26 KiB) Downloaded 4444 times
blurry_glass_test_001A.jpg
test render
Last edited by patricks on Mon May 26, 2008 11:33 am, edited 1 time in total.
<<

notareal

KT-Team
KT-Team

Posts: 4211

Joined: Fri Oct 27, 2006 7:27 am

Location: Finland

Post Mon May 26, 2008 8:34 am

Nice work Patrick! Thanks.
<<

sintra

KT-Team
KT-Team

Posts: 1120

Joined: Fri Oct 13, 2006 8:57 am

Location: United Kingdom

Post Mon May 26, 2008 8:48 am

Cheers Patrick,

Thanks for sharing 8)
Kind regards

Darren

Sketchup6 & Kerkythea
Dell Precison M90 notebook, Intel Core 2 Duo 2.33 Ghz, 4Gb of Ram, nVidia Quadro FX 2500M

Image


http://www.flickr.com/photos/darrengoodwin/show/
<<

patricks

KT-Team
KT-Team

Posts: 3209

Joined: Mon Nov 14, 2005 2:39 am

Location: Palma de Mallorca / Spain

Post Mon May 26, 2008 8:51 am

Hi again :)

here i post an alternative blurry glass material that can be used for all render methods and also work with single face objects ( similare like our thin glass material ) ...... this one render relative fast with PM & FG ( use pseudo caustics :wink: ) ...... as it is not 100% accurate ( it dont uses IOR refraction which speeds up render time ) and dont uses Absorption Falloff , it dont have "green edges" but it work very good for blurry windows or doors like the reference image you posted with the house and the blurry glass windows ..... ( but you could "fake" the green glass edges by applying a different material to the edges of the glass in your modeler and then in KT apply the same material with a green color to it :wink: )

as i mentioned , this material can also be used with single face objects .
i think it can be a good alternative for faster rendering ( please read my earlier post ( first page ) about how to improve PM & FG rendering with AA threshold , Brightness threshold and fuzzy tracing qualetie )

the material pack has different shininess values ( the image here has a shininess value of 500.00 which i think is good for blurry glass like your reference image show ... maybe you could use also 750.00 or 1000.00 )

Greetings Patrick ( if you have any problem , please let me know and i will see if i can help :wink: )
Attachments
untitled_blurry_glass.JPG
reference image
Thin_Blurry_Glass_AA1.mat.zip
(41.75 KiB) Downloaded 2948 times
blurry_glass_test_002A.jpg
test render
<<

notareal

KT-Team
KT-Team

Posts: 4211

Joined: Fri Oct 27, 2006 7:27 am

Location: Finland

Post Mon May 26, 2008 9:06 am

Last edited by notareal on Mon May 26, 2008 9:15 am, edited 1 time in total.
<<

patricks

KT-Team
KT-Team

Posts: 3209

Joined: Mon Nov 14, 2005 2:39 am

Location: Palma de Mallorca / Spain

Post Mon May 26, 2008 9:13 am

<<

dentex

KT-Master

Posts: 914

Joined: Mon Nov 26, 2007 9:19 pm

Location: Italy

Post Mon May 26, 2008 9:56 am

dentex
<<

RAYMAN

KT-Explorer

Posts: 268

Joined: Tue Aug 21, 2007 1:47 pm

Post Mon May 26, 2008 2:26 pm

<<

chelito

KT-Fellow

Posts: 41

Joined: Sun Dec 23, 2007 8:31 am

Location: Merida.Yuc.Mex.

Post Mon May 26, 2008 4:39 pm

<<

Dan

KT-GrandMaster

Posts: 1022

Joined: Sat Dec 31, 2005 9:05 am

Location: Ploiesti, Romania

Post Mon May 26, 2008 8:09 pm

Regards!
Dan
....................................................................
ArchiCAD // SketchUp // Kerkythea
Intel Core 2 Duo E 6400 @ 2,13 Ghz // NVIDIA GeForce 7950 GT // 4 Gb RAM // Win XP SP2
<<

RAYMAN

KT-Explorer

Posts: 268

Joined: Tue Aug 21, 2007 1:47 pm

Post Mon May 26, 2008 11:11 pm

side by side !

My material and Patricks material both have verty different
look.
Both render pretty fast ! I tried them out and here is a comparison
of both typs of material.
Patricks is of the frosted typ and mine is of the milk typ.......
See pictures and rendertimes(quad core Q6600 2400mhz 3GB).
I will add a colourless milky version with the next post !
Peter
Attachments
composed.jpg
<<

patricks

KT-Team
KT-Team

Posts: 3209

Joined: Mon Nov 14, 2005 2:39 am

Location: Palma de Mallorca / Spain

Post Mon May 26, 2008 11:37 pm

<<

RAYMAN

KT-Explorer

Posts: 268

Joined: Tue Aug 21, 2007 1:47 pm

Post Tue May 27, 2008 12:10 am

Material is endless !

Attachments
blurredglass.mat.zip
Best used witzh MLT or MLT bpt !
(24.78 KiB) Downloaded 2191 times
blurredglas.jpg
<<

RAYMAN

KT-Explorer

Posts: 268

Joined: Tue Aug 21, 2007 1:47 pm

Post Tue May 27, 2008 12:12 am

Heres a render with the material...

Attachments
blurredcombi.jpg
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Cuore

KT-Fellow

Posts: 44

Joined: Wed Feb 28, 2007 4:02 pm

Post Tue May 27, 2008 10:05 am

Wow

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