Difference between bidirectional and normal path tracing (from Veach’s PhD thesis).
This image shows the difference between bidirectional and normal path tracing. Taken from the original PhD thesis of Veach.
Veach’s bidirectional tracer test scene
Difference between bidirectional and normal path tracing (from Veach’s PhD thesis).
This image shows the difference between bidirectional and normal path tracing. Taken from the original PhD thesis of Veach.