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This page gives some basic details about the Raw Shadow render element and explains how it is used.

Overview

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The Raw Shadow Render Element stores information about cast shadows calculated from the lighting in the scene. It is a "reverse" image in the sense that white areas indicate shadows while black areas indicate no shadow.

 

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titleUI Path: ||Display Render Settings button|| > Render Elements tab > Raw Shadow

 

To use render elements, select from the Available render elements column and click the Add button to add the passes you wish to generate at render time. When you render the scene, the added render elements listed in the column on the right, will also render, which can be viewed from the VFB window's channel drop-down menu.

For more information on the parameters on this dialog, see the Render Elements tab page.

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Attributes

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The parameters for this render element appear in the Attribute Editor under Extra V-Ray Attributes.

Enabled – When enabled, the render element appears in the V-Ray Virtual Frame Buffer.

Deep output – Specifies whether to include this render element in deep images.

Filename suffix – The text added to the end of the rendered file, when saved as a separate file (e.g. myrender.rawShadow.vrimg).

Apply color mapping – Applies the color mapping options specified in the Color Mapping rollout of the VRay tab in the Render Settings window to this render element. This option is enabled by default.

Denoise – Enables the render element's denoising, provided the Denoiser render element is present.

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Common Uses  

The Raw Shadows Render Element is useful for changing the appearance of shadowed areas after rendering in a compositing or image editing application. Below is an example of its use, where the Raw Shadows are added (plus) with the vrayRE_Raw_Light pass.

 

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Raw Shadow Render Element

 

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Original Beauty Composite

 

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Shadows lightened by adding the Raw Shadow Render Element

 

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Underlying Compositing Equation

vray_Raw_Shadow x vrayRE_Diffuse = vrayRE_Shadow

 

 

 

Notes

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  • Shadows can be both added and subtracted at a composite level without rerendering using the Shadow Render Elements.

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

  • This render element is not supported with V-Ray GPU rendering.