By mark

Requires Houdini 9 Or Greater

The OTL contains an Ambient Occlusion Light Source Object. This is similar to the Environment Light object, but uses a different shading process which allows for irradiance caching.

When using HDRI map with hot-spots, it's probably better to use the environment area light.

This expression function is from the SESI mailing list. It allows a relative path to be constructed from two full paths.

It should be loaded as a custom expression function (Settings->Aliases/Variables/Expressions) or simply by running: exread oprelative.func in the textport

This OTL allows you to render even/odd video fields to a combined image.

It uses an embedded Python script (SOHO) and also a contained COP network to do the compositing of the independent fields.

Fri Sep 12 EDT 2008 - Changed from a SOHO operator which contained a network to a subnetwork which contained the SOHO output driver and the COP network. - Changes had to be made to the embedded Python code - Now, there are two custom nodes, the SOHO output driver and the subnetwork. The SOHO driver is labelled "Mantra field contents" and shouldn't be used directly. The subnetwork is "Mantra Field Render" which should be used.