Skip root node when compiling standard manifests
Skip root node when compiling standard manifests

The Arnold scene always has an internal root shape of type 'list_aggregate'. This shape has the ai_bad_shader assigned. Actually this shape should be skipped when the objects are collected.

Patch provided by Peter Horvath from Solid Angle

anderslanglands/alShaders2,anderslanglands/alShaders2,anderslanglands/alShaders2