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The Self Illumination Render Element isolates self-illuminated materials, including V-Ray Mesh Lights, objects with the V-Ray BRDFLight, and any objects with Self-Illumination enabled in their V-Ray material. This render element is useful for brightening or color-correcting self-illuminated materials in the final composite.

For example, the V-Ray Material has a parameter for self-illumination. If this parameter is set to a non-black color value, this render element shows the results of the self-illumination. 

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

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.