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Rendering with Arnold in Houdini and Solaris using the HtoA plug-in.
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Light Groups in HTOA issues

3 REPLIES 3
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Message 1 of 4
Justin_Long
1176 Views, 3 Replies

Light Groups in HTOA issues

Hi,

Am trying to setup Light groups in Houdini for Arnold and it doesn't seem as straightforward as in Maya.

I add the light group name to the light, add a custom AOV using an LPE to pickup the light group. When I test this in render view it works and strangely even with just one lightgroup AOV created, it automatically makes light groups for all the other lights.

When I render this on the farm the frames come back completely blank.

The docs seems a bit vague on how this should be setup in Houdini, does anyone have any ideas?

thanks,

Justin

3 REPLIES 3
Message 2 of 4
Stephen.Blair
in reply to: Justin_Long

You don't need to use an LPE.

If your light group name is "red", then add an AOV like RGBA_red (if you want the red light contribution to the beauty). Or diffuse_red if you want just the red light contribution to the diffuse.



// Stephen Blair
// Arnold Renderer Support
Message 3 of 4
Justin_Long
in reply to: Justin_Long

got it, its working now, thank you!

Message 4 of 4
lee_griggs
in reply to: Justin_Long

There is an updated example here now.

Lee Griggs
Arnold rendering specialist
AUTODESK

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