Base material interface — the polymorphic anchor shared by every concrete
material kind (Standard, PBR, Shader, Node). Concrete materials add their own
user-facing properties while the shared _buildGroup hook lets the renderer
dispatch every material through a common path.
Base material interface — the polymorphic anchor shared by every concrete material kind (Standard, PBR, Shader, Node). Concrete materials add their own user-facing properties while the shared
_buildGrouphook lets the renderer dispatch every material through a common path.