Ray tracing replaces parts of the pipeline that are using heuristics and approximations that are at their limits with the "correct" solutions (because ray traci

Ray tracing replaces parts of the pipeline that are using heuristics and approximations that are at their limits with the "correct" solutions (because ray tracing is physically correct). The problem is that there probably aren't better techniques for these approximations that aren't marginal improvements, we've started to hit a limit of what we can achieve (with physically based rendering being the target; stylized rendering still has plenty to explore) with classical rendering. Ray tracing has always been the future of graphics, we are slowly getting there. So it should provide a standard "generation" worth of increase in graphical quality.