Multimatte - Primary Visibility Off

[bernhard]

Linux Fedora, Maya 2011:

When using a multi matte on a transparent object (Refraction: Affect Channels-->All Channels) and turning off primary visibility on an object behind, the multi matte also deletes that information.

Any way to get around ?

Primary visibility off but keeping the object behind the transparency in the multi matte ?

thx

[ricoholmes]

Maya 2012 Windows 7 X64 VRay 2.10.01

Having exactly the same problem here. I need to use a matte from an gradient plate behind glass.
• Primary visibility is off for the gradient plate, visible in refractions ON.
• Works perfectly for RGB_Color, but multimatte channel is invisible.
• Affect All Channels is ON on glass.



** edit: Workaround: Set Primary Visibilty to ON, set VrayMaterialOverrides ON
insert Material (wrapper+VratMtl in my case) with Opacity 0 in V-Ray Material slot.
insert Material to be shown and Mutlimatte in Refraction Material slot.
Not really a "workaround" as such I guess, but probably the proper way to do it. Not to self: shhh... never admit you were wrong, they'll never notice.