This page gives some basic details about the Raw Shadow render element and explains how it is used.
Overview
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.
UI Path
||out Network|| > V-Ray Render Elements node > V-Ray > Render Channel > Color Channel > Type > Raw Shadow
Attributes
The parameters for this render element appear in the V-Ray RenderChannelColor render channels node.
Denoise – Enables the render element's denoising, provided the Denoiser render element is present.
Consider for Anti-Aliasing – When enabled, anti-aliasing will be used where possible.
Filtering – Applies the image filter to this channel. Image filter settings are in the Image Sampler tab of the Sampler tab of the V-Ray Renderer node.
Color Mapping – When enabled, the Color Mapping options in the render settings will be applied to the current render channel.
Derive Raw Channels – Generates data in the raw channels by combining the respective color and the filter color channels.
VFB Color Corrections – Applies the post render color adjustments made from the VFB.
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 Raw Lighting pass.
Shadows lightened by adding the Raw Shadow Render Element
Underlying Compositing Equation
Notes
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.