I've just got into Vue and am having great success so far. I would like to use it to generate only vegetation, not ground surfaces. My workflow is this: shoot a background plate, shoot an HDRI, light some trees in Vue with the hdri to match the plate and render in passes. My question is how do you keep the shadows cast on the ground, but lose the color information? I've spit out a shadow pass, but its some un-antialiased direct shadow type of thing, not really that useable. Any tips on this??