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the Reflection Render Element.

The Coat Reflection RE stores indirect reflection information calculated

from VRayMtl Coat Layer. Surfaces with the Coat Amount parameter set to 0 contain no information in the render pass and therefore render as black.

The Coat Reflection RE can be obtained by multiplying

the Raw Coat Reflection

 by the Coat Filter. So while the raw coat reflection pass gives the full reflection of objects reflecting in the scene, the coat reflection filter sets how much of that reflection should come through in the composite. The two are multiplied together to create the Coat Reflection pass which gives a true representation of the reflection in the scene.

VRayVFB – When enabled, the render element appears in the V-Ray Frame Buffer.

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 (Render Setup window > V-Ray tab) to this render element. This option is enabled by default.

Multiplier – Sets the overall intensity of the render element, where 1.0 is the standard multiplier.

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