Physically Based Rendering, 2nd Edition

S

SAH. See surface area heuristic

sample placement, 682–686

quasi Monte Carlo, 685

stratified sampling, 682–685

warping samples and distortion, 685–686

sample points

generating, 888

illustrated, 889

octree, 896–901

radiance probe computation, 962

radiance values computation, 897

raster space, 309

sampled spectrum

arithmetic operations, 266

XYZ matching functions computation, 271–272

samplers

adaptive, 385–389

best-candidate, 378–385

current pixel coordinates, 349

Halton, 363–366

implementations, 323, 338, 340

low-discrepancy, 372–378

main rendering loop interaction, 385–386

ray generation report, 341

stratified, 346

samples

(0,2)-sequence, 370

accessing, 344

bootstrapping, 853

difference comparison, 389

discrete pixel, 353

distribution, 25