Mask All Objects tools for 3D rendering Material ID color channels?

[marina_0725]

Hi there, curious to know if anyone has experience getting the 'Mask All Objects' tool (Layer tab > Mask All Objects) to read Material or Object ID color channels generated from a 3D rendering software? This would significantly speed up our post-production workflow. 

Our typical workflow is using the color masks to use the Color Selection tools to generate the masks one by one, but the process is tedious when editing a large number of images daily. I've had better results getting the Mask All Objects tool to automatically mask out every object, though its more efficient for editing to grab similar objects by type or material, rather than one by one-- just like Object/Material IDs provide. 

What I'm looking for is essentially a combination of the "Select > Color Range" tool and the "Mask All Objects" tool. 

Anyone have any tips, maybe output format or file type to get PS to recognize similar, solid colors for its Mask All Objects tool? Thank you!

[c.pfaffenbichler]

Could you please provide one or two sample images?