alpha channel all white in arnold render

[Anonymous]

trying too render in arnold and for some reason that's what I get for alpha channel which I can use for compositing

screen-shot-2019-04-28-at-42400-pm.png

this what I get when composite

screen-shot-2019-04-28-at-42413-pm.png

[lee_griggs]

What is your Skydome Camera Visibility set to?

[ashley.handscomb.retallack]

Do you have a background or image plane on the camera?

[Anonymous]

I will send the screen shots

camera is 0

screen-shot-2019-04-29-at-35459-pm.png

and for the image plane for the render camera is non

screen-shot-2019-04-29-at-35618-pm.png

[Anonymous]

I will send the screen shots

[Anonymous]

I will send the screen shots but camera image plane is non and the SkyDome camera is 0

[Stephen.Blair]

If you have an image plane, it's because of a known issue with image planes and the alpha channel.

A possible workaround is to put this in the Render Settings > Diagnostics > User Options:

background_visibility 0

This issue will be fixed in the next mtoa update.

[Anonymous]

Thanks very much Stephen you are AMAZING and yes it worked

screen-shot-2019-04-30-at-103419-am.png

screen-shot-2019-04-30-at-103600-am.png

and in nuke

screen-shot-2019-04-30-at-103706-am.png

once again thank you

[Anonymous]

Unfortunatly, all this sheet dosen`t work whith GPU render. Alpha still there