Vray spot lights?

thomthom · 25 Nov 2009, 10:08

do you know anything about the transparent material problem?
thx

? what problem?

ozzidora · 25 Nov 2009, 10:27

when you turn the transparency lower tahn 20%
in SKP, vray renders it no more transparent and a lot darker. Also if you
modify the transparency map in the Vray material editor.
I've found it happans around 20% of transparency.
i've got the 01.05.30 version of Vray

stefanq · 25 Nov 2009, 10:29

Great news Thomas!

thomthom · 25 Nov 2009, 10:48

@ozzidora said:

when you turn the transparency lower tahn 20%
in SKP, vray renders it no more transparent and a lot darker. Also if you
modify the transparency map in the Vray material editor.
I've found it happans around 20% of transparency.
i've got the 01.05.30 version of Vray

hm.. Got a screenshot?

thomthom · 25 Nov 2009, 11:24

@ozzidora said:

when you turn the transparency lower tahn 20%
in SKP, vray renders it no more transparent and a lot darker. Also if you
modify the transparency map in the Vray material editor.
I've found it happans around 20% of transparency.
i've got the 01.05.30 version of Vray

hm... I'm guessing it's the backside of the faces you are seeing? You have applied the transparent material on one side? And use default on the backside.
VfSU renders the backside blue when the material is default. This is similar to what you should be seeing in SU as well. Using the default style in SU you should see the backfaces as blue.

Apply transparent material to both front and back.

ozzidora · 25 Nov 2009, 14:56

ok it works fine thank you!
but the rendered material in the material editor is still darker
(sse attached image).
How can I assign material to backfaces?

thanks again

thomthom · 25 Nov 2009, 15:07

@ozzidora said:

but the rendered material in the material editor is still darker

I never trust the material editor's preview for anything. The UV mapping is far out of scale for what I'm making and the sphere is rarely a good object to preview my materials.

@ozzidora said:

ok it works fine thank you!

@ozzidora said:

How can I assign material to backfaces?

Now I'm confused. What worked if you did not apply the material to the backfaces?

ozzidora · 25 Nov 2009, 16:24

excuse me but I'm working on a big model of a '700 baroque
villa in Turin with a lot of colums and with garden ground up and down and it is possible I'm not understandable!
I agree: the material editor preview is not reliable.
what I mean is:
-the material editor preview is uncorrect (dark)
-the final render is ok (with trasparent material also to the backfaces)
-I'd like to know how to assign a material to backfaces in a simple way (the method I've tried seems tedious (I don't explain it because it is tedious)
-my english is not suitable for a BBC documentary about Vray...

thomthom · 25 Nov 2009, 16:46

@ozzidora said:

-I'd like to know how to assign a material to backfaces in a simple way (the method I've tried seems tedious (I don't explain it because it is tedious)

You can use this plugin: http://forums.sketchucation.com/viewtopic.php?f=180&t=18992&p=155759
Use the Front-Face to Back-Face command. Anything you select will have their front face material transferred to backface. It digs into nested groups/components.

m48 · 1 Dec 2009, 18:15

some clue about the release date?

thomthom · 1 Dec 2009, 18:44

Nope. It's done when it's done.

majid · 31 Dec 2009, 06:54

is this useful? (worthy to translate?)
http://forums.sketchucation.com/download/file.php?id=38987
we have a topic here : http://forums.sketchucation.com/viewtopic.php?f=320&t=21870&start=45