Stage 1: Light path sampling
Stage 1:
VC
VC
VM
VM
Stage 2:
a) Trace light sub-paths
b) Connect light vertices to eye
c) Build range search structrure
...
b) Merge with nearby light vertices
c) Continue eye path
Stage 2: Eye path sampling and pixel estimator construction
a) Connect to light
b) Connect to corresponding light vertices
c) Merge with nearby light vertices
a) Connect to a light source and to corresponding light vertices