2008

NOTE If you know that you want to use the regathering option, then typically
you don’t need as dense a mesh for the radiosity solution. Even if you don’t
subdivide the surfaces at all and do an Initial Quality of 0%, the regathering will
work, and might provide an acceptable visual result (useful for quick tests as well).
However, accuracy and subtle details depend on the quality of the radiosity solution
stored in the mesh. The radiosity mesh is the foundation for the regathering
process.
In the following illustrations, solutions were processed with an Initial Quality
of 0%. There is a high variance between small surfaces when a dense mesh is
used. Regathering gives acceptable results regardless of mesh density. But more
subtle details appear with a denser mesh; for example, at the base of the
sculpture.
No mesh
Left: Model subdivision
Middle: Viewport result
Right: Result of regathering
Coarse mesh
Left: Model subdivision
Middle: Viewport result
Right: Result of regathering
6020 | Chapter 18 Rendering