topic Re: Render glass shader solo whit alpha ? in Arnold for Cinema 4D Forum

Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 00:19:57 GMT

Hellon for my compositing scène i need to render juste a few glass tube solo , but if a render juste the tube whitout my background but whit my light , my tube are not trasparent . How can i fix it ?

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 00:21:20 GMT

whit file

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 00:40:47 GMT

Here is a tutorial for you:
https://support.solidangle.com/display/A5AFMUG/Rendering+Glass+Surfaces+with+Arnold

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 00:45:34 GMT

ok but my problem is if i activate background i have my transparency

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 00:46:05 GMT

like this

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 01:09:57 GMT

Disabling the background if you are using Arnold Sky just put camera contribution to 0
if you are using a sphere with texture as a background it's normal that you get a black when you deactivate it. because you have nothing in your environment to reflect
here is a test with Arnold Sky Camera contribution=0

and here with camera contribution=1

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 01:12:07 GMT

how ok but i have a lighting setup whitout sky and if i put a sky my glass are not the same lighting of the rest of my scène

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 01:27:45 GMT

add arnold tag to your background and unchek primary visibility

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 01:38:15 GMT

with tag visibility ON

with tag visibility OFF

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 01:39:48 GMT

Ok its work but is not transparant to make my compositing working

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 02:05:46 GMT

To get transparency you must add arnold tag with opaque unchecked
You have 3 bottle facing the camera, aligned one behind the other two, each bottle must have at least 4 rays, so 4*3 = 12
So set transmission value to 12 in Render Setting/Ray Depth

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 09:43:09 GMT

same again 😞

Re: Render glass shader solo whit alpha ?

lee_griggs — Wed, 23 May 2018 10:11:57 GMT

Can you show your shader settings. Does it have Transmission?

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 10:14:26 GMT

I try this !

Re: Render glass shader solo whit alpha ?

lee_griggs — Wed, 23 May 2018 10:16:18 GMT

What happens when you increase Transmission Depth?

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 10:16:56 GMT

nothing 😞

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 10:21:24 GMT

in the after effect project my glass is not transparaent and dont show my rhino

Re: Render glass shader solo whit alpha ?

lee_griggs — Wed, 23 May 2018 10:35:05 GMT

Can you post a simplified scene?

Re: Render glass shader solo whit alpha ?

Anonymous — Wed, 23 May 2018 10:40:48 GMT

ok try to export the glass in after effect and put another layer behind it 😉

Thank you my friend

[url=https://www69.zippyshare.com/v/Z1q93KYn/file.html]forum.zip[/url]

Re: Render glass shader solo whit alpha ?

lee_griggs — Wed, 23 May 2018 11:23:04 GMT

That link doesn't work. Can you post it somewhere more reliable, please?