Optional camera description chunks go inside Camera chunks to define attributes of the camera.
Patch chunks are used to make up high level surfaces. For example, triangle patches can be used to make a mesh.
General information about mdl colors.
General information about mdl materials.
A material can be defined as an aggregate of "lobes". Each lobe will be evaluated or sampled, and the results added together. To do this, use the Aggregate material chunk (smAgg), including an arbitrary number of the chunks defined below.
Defines new chunk types