Does forward ray tracing have any advantages over reverse ray tracing or distributed ray tracing?

Question

3D

Does forward ray tracing have any advantages over reverse ray tracing or distributed ray tracing?

Answer 1

An interesting fact, for a long time people believed that light comes from people's eyes, illuminates objects and that's how we see everything. But that's beside the point.
In the case of reverse ray tracing, there is a loss of information. We take into account only those rays that directly reach the camera lens (one ray for each pixel is counted). That is, rays that do not reach the camera are discarded, even though they may affect the final image.
This problem is solved by using hybrid tracing, when we take reverse tracing and forward tracing (but limited to save computing resources).
In any case, all these approaches do not work well for complex materials. It turns out so because they consider the direct reflection of light, which in reality is not entirely true. Distributed tracing uses multiple reflections, so we get more realistic colors, etc.