If you need more help, please send support your houdini.env file (or json package if that’s what you’re using) and the Houdini info from Show Details.

If you have other renderers and plugins, I would remove all other plugins from HOUDINI_PATH, get HtoA working, and then put the other stuff back.

You want to see the HtoA location at the start of HOUDINI_PATH Third, check Help > About Houdini > Show Details You want something like this (PATH is for Windows only): # htoa config start Second, what’s your houdini.env look like? In the cases where there was a range of IOR values for a specific material I have listed the lower value on the left and the upper range value on the right.That is almost always because the environment (PATH and HOUDINI_PATH) is not set up correctly for HtoA and Houdini.įirst, how to do you start Houdini? Don’t double-click on a hip file, because the Houdini environment won’t be set up correctly. The next list is the full complete list of hundreds of materials and it is organized alphabetically by material name. The first group contains many commonly used materials. It is for general usage in 3d applications only and not for scientific use. Please do not take this list to be a scientifically accurate list. You should be able to use these values in many different 3d applications - such as NewTek Lightwave 3d, Blender 3d, Autodesk 3DS Max, Autodesk Maya, Maxon Cinema 4D, Next Limit Maxwell, The Foundry Modo and Strata 3d. It obviously helps if you know what the correct IOR value is for the type of surface you are trying to re-create. Many 3d applications these days allow you to input actual IOR values in order to achieve a more accurate representation of surfaces during rendering of your 3d models. Over the years I have been collecting IOR (Index of Refraction) values I can find for use in 3d rendering applications. Index of Refraction values (IOR) - For use with 3d modeling / rendering and animation applications

Arnold 3ds max