About separate colors ..

[will_will]

hello !

are there some way to separate or mask a color/bitmap R,G,B channels to 3 single gray color , like multimatte mask, and AO/roughness/metalic packed textures. Preferably V-Ray own nodes.

[hermit.crab]

You can texture pack in 3ds Max, yes. Check the attached screencap and scene.
If you already have a packed texture, use the 3ds Max native RGB Tint to extract each texture (the desired channel should be white, others black).

[hermit.crab]

You can texture pack in 3ds Max, yes. Check the attached screencap and scene.
If you already have a packed texture, use the 3ds Max native RGB Tint to extract each texture (the desired channel should be white, others black).

[will_will]

Thank you so helpful . I never thought use RGB tint to do this.