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This page gives an overview of V-Ray's Shadow Render Elements and how they are used in compositing.

 


Overview

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A common need in a Beauty Pass is the ability to control shadows. Shadows can be darkened, lightened, or recolored using the Shadow Render Elements.

V-Ray provides three render elements for shadows:

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  • Shadow - A color image showing cast shadows and the diffuse component. Areas of shadow are shown as lighter in color, while non-shadow areas are dark.

  • Shadow Raw - A grayscale image showing only cast shadows with no diffuse component. It is a reverse image of shadows, where shadow areas are brighter and non-shadow areas are darker.

  • Matte Shadow - A grayscale image showing areas where light doesn't reach, as opposed to cast shadows. While this render element is not really a shadow render element, it can be used as a matte to soften, enhance, or tint dark areas of the scene to complement a change in cast shadows.

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Render Element Examples

 

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Shadow Render Element 


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Shadow Raw Render Element

 


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Matte Shadow Render Element

 


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Notes

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  • Shadow Render Elements can be both added and subtracted at a composite level without re-rendering.

  • Shadows can be color-corrected using Shadow Render Elements.