
5.9. Precomputed Radiance T ransfer 173
Fi gure 5.22. Comparing uniform (le) and adaptive subdivision (right) of the mesh for
precomputed radiance transfer. ©2004 ACM, Inc. Included here by permission [320].
press these representations. We refer the interested reader to the survey of Ra-
mamoorthi [474] for more details.
Regarding shadowing, as with radiosity approaches (Section 5.10.1), a ne
level of tessellation is required for PRT approaches to properly capture shadow
boundaries. Alternatively, PRT data can be stored in texture space, in which case
the texture resolution must be suitably high to capture shadow boundaries. Un-
fortunately, discontin ...