Enhanced Fresnel

  • December 12, 2019
  • 141 Downloads
  • 9 Likes
  • Blender 2.7x
  • Render: Cycles
  • Creator: disOrder66
  • License: CC-BY
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Description:

This node group takes roughness into account when calculating Fresnel.

The group also has enhancements for roughness and color.

Grazing Reflectivity: This produces realistic reflections at grazing angles. The Grazing Reflectivity parameter controls the strength. The GR Falloff parameter extends the reflections.

Color Correction: This addresses an issue that causes color to appear too dark at grazing angles.

The group is compatible with 2.79 and 2.8.

Comments:

  • disOrder66 profile picture
    disOrder66

    I have also created a Grazing Reflectivity group for the Principled shader. https://www.blendswap.com/blend/23960

    Written December 14, 2019
  • potencialhate profile picture
    potencialhate

    thank you

    Written January 19, 2020
  • disOrder66 profile picture
    disOrder66

    You're welcome.

    Written January 21, 2020
  • cultmethod profile picture
    cultmethod

    I am eager to try this out, but unsure how to connect the nodes. Can you explain how to use this?

    Written February 16, 2021
  • disOrder66 profile picture
    disOrder66

    Connect the Fac output to the Mix shader that mixes the Diffuse and Glossy shaders. Connect the Color output to the Diffuse shader. Connect one of the Roughness outputs to the Glossy shader. The output you choose depends on which version of Blender you are using.

    Written February 25, 2021
  • zxdiac profile picture
    zxdiac

    Just to clarify, does a higher falloff extend or shorten the reflections?

    Written June 08, 2021
  • disOrder66 profile picture
    disOrder66

    Higher values extend the reflections.

    Written June 10, 2021