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IOR values with mapping

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  • #1

    IOR values with mapping

    How does one determine the numeric IOR value when using a map to specify the IOR in a Vray material? I did some tests (which I can't post because of websense), and I think that black is 1.0. But what is white? How do I determine what greyscale value is what IOR value? Thanks.
    "Why can't I build a dirigible with my mind?"
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  • #2
    The texture map servers as a multiplier for the actual IOR value; so if you have your IOR set to 2.0, a white in the texture map will correspond to 2.0, and black will give IOR of 0.0 (not recommended though).

    Best regards,
    Vlado
    I only act like I know everything, Rogers.

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    • #3
      Oh I get it. Cool.

      Thanks Vlado.
      "Why can't I build a dirigible with my mind?"

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