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Rendering with Arnold in 3ds Max using the MaxtoA plug-in.
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alpha channel all white in arnold render

8 REPLIES 8
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Message 1 of 9
alateeqi.vfx
4565 Views, 8 Replies

alpha channel all white in arnold render

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

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8 REPLIES 8
Message 2 of 9
lee_griggs
in reply to: alateeqi.vfx

What is your Skydome Camera Visibility set to?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 9

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



Ashley Handscomb Retallack
Arnold Support Specialist
Arnold Documentation | Arnold Downloads
Message 4 of 9
alateeqi.vfx
in reply to: alateeqi.vfx

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

Message 5 of 9
alateeqi.vfx
in reply to: lee_griggs

I will send the screen shots

Message 6 of 9

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

Message 7 of 9

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.



// Stephen Blair
// Arnold Renderer Support
Message 8 of 9

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

Message 9 of 9

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

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