Section 01
Light Transport
Where the light goes, and how many bounces you pay for. 5 entries, each starting from something you could put on a table.
Light Transport — every entry
- 01Noise is a budgetA render is noisy because it is estimating an integral with a finite number of rays. Every halving of the noise costs four times the samples, which is why the last few per cent of cleanliness costs more than the whole image before it.
- 02One bounce, two bouncesWhat each additional bounce adds, and where the returns stop.
- 03Why interiors are expensiveLight that has to find its way in through one window, and the paths that never do.
- 04CausticsThe hardest paths to find, and why they are usually faked.
- 05ImportanceSending rays where the light actually is rather than uniformly. The single biggest win available.
The other sections