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Thread: Light Path Expressions

  1. #1
    Join Date
    Dec 2004
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    Marina Del Rey, California
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    Default Light Path Expressions

    Attaching here documents for understanding Light Path Expressions (LPEs)

    nvidia_iray_light_path_expressions.150818.A4.pdf
    nvidia_iray_light_path_expressions.150818.LTR.pdf

    Read this if you want to dig into LPEs and understand how to specify them, or better use them.
    Last edited by bart; August 20th, 2015 at 18:35.
    Barton Gawboy

  2. #2
    Join Date
    Sep 2015
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    5

    Default

    This is very helpful. Thanks a lot

  3. #3
    Join Date
    Sep 2015
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    11

    Default

    Hi! I ran into a syntax issue based off of this documentation. Using E.*<L’key’> copied straight from the doc writes an image with no values. Using <L'key'>.*E works fine. It also took me a few tries to figure out that the handles don't need quotes when being marked on the objects.

    Also, is there a use for having separate handles on the transform and shape nodes in Maya?

    Thanks!

  4. #4
    Join Date
    Sep 2015
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    11

    Default

    Well, turns out it was from copying the formatting of that doc which has different quotes...

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