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    MDL Material Exchange missing?

    Hi,

    do you actually have core_definitions.mdl? It comes with the MDL Material Exchange package (download links here)?
    See also: https://forum.allegorithmic.com/index.php?topic=14064.0 (text in...
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    Hue-neutral scattering and constant target attenutation

    Thank you for your clarifications & comments, they are very helpful and inspiring!



    Low quality test render using a scattering coefficient with zero saturation by passing the same color for...
  3. Thread: SDK: This forum?

    by tschw
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    See you on the other side

    Given better chances for moving the post over to the final location or renaming the forum, I posted there (and saying so here, in case there are no notifications for that yet).
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    Albedo and transmission color vs. scattering and absorption colors

    I've been looking into this, because we have several semitransparent "materials" (in the CAD / CG sense, ideally) composed of visibly thick, textured layers of the same (physical) material. Most...
  5. Thread: SDK: This forum?

    by tschw
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    Browsing that place, I found a completely empty...

    Browsing that place, I found a completely empty MDL forum here https://devtalk.nvidia.com/default/board/253/mdl/ - and it appears like I could post there when I log into my developer account...
    ...
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    Or: ++recipe, ++ux, --confusion

    For the color parameters to actually show up in the output, going for albedo and transmission_color, plus a reference_distance seems to be a good pick:

    10028

    Here is the code for mapping these...
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    Handbook: Chapter 4.5 bugged

    scattering_coefficient:
    (transmission_distance <= 0) ?
    color(0.0) :
    -math::log(scattering_color) / transmission_distance

    doesn't seem to quite line up with


    The scattering color...
  8. Thread: SDK: This forum?

    by tschw
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    4
    Views
    2,152

    SDK: This forum?

    Hi community & MDL developers,

    first of all, thank you for all your hard work and for finally making the SDK publicly available! Looks like the MDL really got it all right and could solve the...
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