Chapter 18. Spatial BRDFs
David McAllister NVIDIA
The spatial bidirectional reflectance distribution function (SBRDF) represents the reflectance of a surface at each different point, for each incoming and each outgoing angle. This function represents the appearance of the surface in a very general, detailed way. This chapter discusses a compact SBRDF representation as well as rendering approaches for SBRDFs illuminated by discrete lights or by environment maps.
What Is an SBRDF?
An SBRDF is a combination of texture mapping and the bidirectional reflectance distribution function (BRDF). A texture map stores reflectance, or other attributes, that vary spatially over a 2D surface. A BRDF stores reflectance at a single point on a surface as it varies ...
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