Community
Arnold for Maya Forum
Rendering with Arnold in Maya using the MtoA plug-in.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Transmit AOVs

4 REPLIES 4
SOLVED
Reply
Message 1 of 5
SorceryCode
1849 Views, 4 Replies

Transmit AOVs

Hi.

I'm trying to render alphas that respect the transmission of an object, but it doesn't seem to be working.

I have created the most basic scene: a plane, a cube (with a 'glass' standard shader applied - and Transmit AOVs ticked), a single Arnold light, and no environment / backplate, but I'm still getting solid black and white profile alphas.

It clearly states here https://docs.arnoldrenderer.com/display/A5AF3DSUG/Transmission#Transmission-TransmitAOVs that it can be done, and all answers to previous questions that I found about the matter suggest Transmit AOVs is the answer, but as I said, it's not working. For me at least.


I'm clearly doing something wrong, so can anyone point me in the right direction?

Ohh, and I have unticked "Opaque" in the glass object's Arnold Properties modifier.

Both Max (2019) and Arnold (5.3.0.2) are up-to-date.

Many thanks.

3ds Max R2 - 2019.3
CPU: Intel i7 5960X 8-Core @ 3.00GHz
RAM: G.Skill Ripjaws V 32GB DDR4 @ 2666MHz
GPU: EVGA Titan X SuperClocked
MOBO: EVGA X99 Micro 2
OS: Windows 10 Pro
MISC: 3Dconnexion SpaceNavigator | Wacom Intuos Pen & Touch
4 REPLIES 4
Message 2 of 5
lee_griggs
in reply to: SorceryCode

This looks like a bug (thanks for reporting).

A workaround is to nullify the Background like this:

3933-transmit.jpg

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 5
SorceryCode
in reply to: SorceryCode

@Lee Griggs The alphas are now working correctly! Thank you so much.

3ds Max R2 - 2019.3
CPU: Intel i7 5960X 8-Core @ 3.00GHz
RAM: G.Skill Ripjaws V 32GB DDR4 @ 2666MHz
GPU: EVGA Titan X SuperClocked
MOBO: EVGA X99 Micro 2
OS: Windows 10 Pro
MISC: 3Dconnexion SpaceNavigator | Wacom Intuos Pen & Touch
Message 4 of 5
arnoldT4FLB
in reply to: SorceryCode

This feature still doesn't work in Maya 2023

Would be nice to add a note in brackets (does not work) or just plain remove the checkbox. If it's a known bug and multiple versions don't support this feature you are just wasting peoples time and money to find that information in a single forums thread online.

Message 5 of 5
Stephen.Blair
in reply to: arnoldT4FLB


@arnoldT4FLB wrote:

This feature still doesn't work in Maya 2023

Would be nice to add a note in brackets (does not work) or just plain remove the checkbox. If it's a known bug and multiple versions don't support this feature you are just wasting peoples time and money to find that information in a single forums thread online.


You can't have a background that's visible to transmission if you want to the alpha to respect the transmission of the objects in the foreground.



// Stephen Blair
// Arnold Renderer Support

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Autodesk Design & Make Report