Tipmental ray user data is now supported in
Maya. Declared (with parameters), and Literal (raw bytes) data are
translated as two separate nodes in Maya. This applies only to mental
ray for Maya custom shader nodes.
Insert
the shader into a shader library (.dll on
Windows; .so on Linux and
Mac OS X).
Maya2009/mentalray/lib contains shader
libraries that are compiled and loaded into Maya by default.
Compiling
and linking a shader on Windows requires including shader.h and linking to shader.lib. These two files are shipped
with Maya, and can be found at Maya2009/devkit/mentalray.