The Raw Refraction Filter Color Channel is similar to the Refraction Filter Color Channel, except it is not affected by Fresnel falloff. The result is a solid mask showing the areas of refraction.
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To properly calculate the Raw Refraction Filter Render Element, the Refraction Render Element must also be added to the list of render elements being calculated during the rendering process to properly determine all the refraction information in the scene.
UI Path: ||out Network||> V-Ray Render Elementsnode> V-Ray > Render Channel >V-Ray Color Channel (RE)> Type > Raw Refraction Filter
