Coat RE

This page provides information on the Coat Render Element.

Overview

The Coat Render element is analogous to the Specular Render Element, with the main difference being that all Coat render elements can be subtracted from the main back-to-beauty composite, graded, and added back in.

The Coat Render Element isolates the reflected light in the scene. This render element is an image that stores specular reflection (highlight) information calculated from the material's reflection value in the scene. Specular reflection is defined as the reflection of light from a surface in a single particular reflection, as opposed to a diffuse reflection which is reflected at many angles.

The brighter the area, the more highlighted reflection the object exhibits in the render. Specular highlights are colored if the Reflection Color parameter of a material is colored.

This render element can be used to enhance the coat layer of the object material. See the example.

UI Path: ||V-Ray|| > Render Elements > Coat

How to add a render element to a scene

Properties

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

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

Consider for Anti-Aliasing – When enabled, anti-aliasing is used where possible.

Filtering – Applies an image filter to this channel.

Vfb Color Corrections – Applies the post-render color adjustments made from the VFB.

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

Example: Enhancing the Object Coat

In this example, the coat layer of the fire engine is enhanced by increasing the Coat RE's Multiplier in the Layer Properties.