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This page gives an overview of the Raw Global Illumination render element and how it may be used in compositing.

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OverviewOverview

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The Raw Global Illumination Render Element stores how much indirect lighting (reflected diffuse light) is received by surfaces in the scene. This raw element is useful for fine-tuning indirect lighting in the compositing process.

The vrayRE_Raw_GI pass is untouched by the diffuse colors of the scene and represents the pure indirect lighting contribution. You can use this raw element to reconstitute the vrayRE_GI by multiplying the vrayRE_Raw_GI with the vrayRE_Diffuse .

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This raw render element must be rendered along with the Global Illumination element (vrayRE_Gl) for proper results.

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||Render Settings window|| > Render Elements tab > Raw GI


Attributes

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

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Enabled

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 – 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

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

Apply color mapping

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 – Applies the color mapping options specified in

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the Color mapping

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 rollout of

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the VRay tab

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 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

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Once the scene is rendered, the Raw Global Illumination Render Element is useful for changing the appearance of indirect lighting in a compositing or image editing application. Below are examples of its use.

 

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Raw Global Illumination Render Element

 

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Original Beauty Composite

 

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  • When Raw Global Illumination is needed in composite, please make sure to also render the Global Illumination render element (vrayRE_GI) as well.

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

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