fake caustis glass material with dispersion

  • January 15, 2017
  • 1,131 Downloads
  • 17 Likes
  • Blender 2.7x
  • Render: Cycles
  • Creator: PixlFX
  • License: CC-0
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Description:

Hi. I made a simple material with fake caustic hope you will enjoy it. Using this material, turn off the refraction and reflective (like in this file) There's no point wasting render time creating noisy real caustics! https://www.youtube.com/watch?v=APJaOa70LPE&feature=youtu.be

Comments:

  • mramshaw profile picture
    mramshaw

    The included HDRi is from a free pack by Maxime Roz and probably copyright.

    There seem to be lots of unnecessary Combine RGB nodes but I might be wrong on this.

    Likewise HSV and Multiply nodes. And the whole thing could be a lot more organized.

    That said, the results look really good.

    I think the refractive caustics are much too strong. Energy conservation means that they should be less bright than highlights but brighter than shadows.

    Usage note: if you are FAKING caustics, leave Refractive and Reflective UNCHECKED (like in this file). There's no point wasting render time creating noisy real caustics!

    Written January 15, 2017
  • PixlFX profile picture
    PixlFX

    Thanks! Now I'm a little optimized material and added option to adjust the brightness of the caustic

    Edited January 16, 2017
  • mramshaw profile picture
    mramshaw

    Nice! For my money Roughness of 0.005 and Caustics of 2 look a lot better.

    Then double the render samples to 256 and things look a lot cleaner.

    Looks amazing with galileo_probe.hdr (Mirror Ball) set to Strength 0.10.

    [I still have to downvote as the HDR cannot be redistributed.]

    Written January 17, 2017
  • PixlFX profile picture
    PixlFX

    I replaced HDRI with a simple light source

    Edited January 20, 2017
  • akira22 profile picture
    akira22

    thanks!!!

    Written February 12, 2017
  • Copperplate profile picture
    Copperplate

    WOW... this is a fantastic setup!!! It looks way better than real caustics at a fraction of the cost... and no noise! Incredible. Thank you PixlFX for this amazing gift!

    -Adam

    Written January 03, 2018
  • PixlFX profile picture
    PixlFX

    thanks

    Written January 16, 2018
  • IAMCUBEMAN profile picture
    IAMCUBEMAN

    I currently making a Master Glas Shader for myself, do you think I could incorporate your caustics implementation to the file I post on BlenSwap?

    Written January 18, 2018
  • PixlFX profile picture
    PixlFX

    it would be nice

    Written January 20, 2018
  • digtalzombie profile picture
    digtalzombie

    thank you

    Written March 30, 2019
  • Mosawi profile picture
    Mosawi

    thanks

    Written June 19, 2020