The Maya API Devkit contains the following hardware shader node plug-in examples:

• hwAnisotropicShader_NV20.cpp
• hwColorPerVertexShader.cpp
• hwDecalBumpShader_NV20.cpp
• hwPhongShader.cpp && hwPhongShaderBehavior.cpp
• hwReflectBumpShader_NV20.cpp
• hwRefractReflectShader_NV20.cpp
• hwRenderPostEffect.cpp
• hwToonShader_NV20.cpp
• hwUnlitShader.cpp
  NoteThe NV20 plug-ins are only supported by the Windows platform.