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shadowcatcher shader in VRay? About Truespace Archives These pages are a copy of the official truespace forums prior to their removal somewhere around 2011. They are retained here for archive purposes only. shadowcatcher shader in VRay? // Archive: Tech Forum 1  |   Order by default Post by Wigand // May 25, 2006, 8:10am Wigand Total Posts: 462 Is it possible to simulate a shadowcatcher shader in VRay. Post by TomG // May 25, 2006, 8:47am TomG Total Posts: 3397 Depends what you mean by "simulate" There is no shader to do it. You could though render using white planes to catch the shadows, and then use a 2D package to merge those shadows onto your background, controlling the mixing of background and shadow there. You might use a colored plane to catch the shadow maybe, so that you can more easily key out that color to isolate the shadow, etc. So you can create a similar effect with 2D work, but there is no shader that will "make an object invisible so the background shows through but catch the effects of a shadow on it". And of course using HDRI will make for good matching lighting btw. Clever set up of the scene may remove the need for catching shadows, depending on what you want to do - eg if you want a car on a road, simply render the road too, for instance. More complex things, such as shadow across a person's face, would have to go the route of rendering with a white or colored object (shaped like the object in the picture, same as if using a shadow catcher shader) and keying out the shadows in 2D again. HTH! Tom Post by Wigand // May 25, 2006, 9:38am Wigand Total Posts: 462 Thank you. I had feared that. I hoped there is an easier way. Post by parva // May 25, 2006, 9:45am parva Total Posts: 822 Good idea. There is a material for Max Vray called "Material Wrapper" with Matte settings. Much more flexible as Lightworks Shadow Catcher. Would be a really good addition for upcoming Vray Shaders for trueSpace.

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