byronfillmore Posted December 1, 2016 Share Posted December 1, 2016 I am racking my brain trying to figure out how to composite my simulation that has smoke intersecting with geometry. Basically, I have a simple simulation with some billowing smoke coming off of some fractured geometry. How do I render the smoke to exclude the areas hidden by the geometry. Is there some kind of Alpha Mask that needs to be generated with the smoke? I apologize if this is a stupid question but I am just learning VFX. Quote Link to comment Share on other sites More sharing options...
dimovfx Posted December 2, 2016 Share Posted December 2, 2016 on the object you have to set "Matte shading", or in mantra you can select objects that you want to be used as matte. Quote Link to comment Share on other sites More sharing options...
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