  This paper presents a framework that fully leverages the advantages of a
deferred rendering approach for the interactive visualization of large-scale
datasets. Geometry buffers (G-Buffers) are generated and stored in situ, and
shading is performed post hoc in an interactive image-based rendering front
end. This decoupled framework has two major advantages. First, the G-Buffers
only need to be computed and stored once---which corresponds to the most
expensive part of the rendering pipeline. Second, the stored G-Buffers can
later be consumed in an image-based rendering front end that enables users to
interactively adjust various visualization parameters---such as the applied
color map or the strength of ambient occlusion---where suitable choices are
often not known a priori. This paper demonstrates the use of Cinema Darkroom on
several real-world datasets, highlighting CD's ability to effectively decouple
the complexity and size of the dataset from its visualization.
