LoadWriterCOLLADA: use two-side lighting by default.
LoadWriterCOLLADA: use two-side lighting by default.
MicBosi/visualizationlibrary,Wulfire/visualizationlibrary,MicBosi/visualizationlibrary,MicBosi/visualizationlibrary,Wulfire/visualizationlibrary,Wulfire/visualizationlibrary