Black artifacts when using matte objects
Hi, first post here. Im just a noob in the realm of vray and 3d in general so bear with me.
I am trying to render an animation of a train in a forest. I am rendering the train seperate from the terrain, because I only want GI on the train. So far so good.
My problem comes in when I'm compositing the train with everything else. The train renders with these 'black sparkles' - hard-edged, black artifacts that show up all over the frame. They seem to be concentrated around my Vray proxy objects in particular, but a few show up in random places like the sky.
When rendering the train, I have everything except the train set as a matte object, alpha contribution -1.0, shadows and affect alpha checked.
Take a look at the attached image - I've circled the artifacts in red.
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