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Overview

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The Specular 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 highlight reflection the object exhibits in the render. Specular highlights are colored if the Reflection Color parameter of a material is colored.

 

UI Path: ||out Network|| > V-Ray Render Elements node > V-Ray > Render Channel > V-Ray Color Channel (RE) > Type > Specular

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Attributes

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The parameters for this render element appear in the V-Ray RenderChannelColor render channels node.

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

Color Mapping – When enabled, the Color Mapping options in the render settings are applied to the current render channel.

Consider For AA – When enabled, anti-aliasing is 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.

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

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.

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Evaluating the Specular Render Element

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The Specular Render Element is useful for changing the final image's specular appearance during compositing. Below are a couple of examples of its use.

 

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Specular Render Element

 

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Original Beauty composite

 

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Brightened, Blurred and Tinted Specular Render Element

 

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Brightened and blurred Specular Render Element

 

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Tinted Specular

 

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Brightened, blurred & tinted Specular set to screen mode in composite

 

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In the example, the specular reflections are brightened and tinted with a cooler color. See the render before and after compositing.

 

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Underlying Compositing Formula

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The Specular Render Element is added as part of the Beauty composite to form the final image.

 

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