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I have an interesting question here.
My 3D app is soon to get a new update which includes Multi Pass rendering So, i have had the chance to beta test a pre release version in an effort to try the new features and identify bugs early (great fun it is too).
So to my question, i have loaded my background footage at the bottom of the stack and from there we have the following layers on the VisionLab time line:
Ambient light, Diffused Light, Specular Light, Reflection and shadow
All looks great and i very much like the fact that each layer can be edited independently to get things looking just right rather than re-rendering the whole thing again because one part didn't look right.
My problem is this, In my scene (background footage) there is part of an object that my CG element has to be behind so here we go with the famous masking/roto work I suddenly discover that the said mask(s) also has to be on each and every layer above it. All worked fine by doing this but, ow my god, imagine the increased preview/render time required.
So my question finally arrives..... Is there a way to produce a mask/roto once and have it affect all the layers without copying & pasting to all the other layers and increasing render time a lot ???
I sure hope there's a workaround cos this is a right pain
Any help/advice will be greatly appreciated
Thanks in advance