I've seen a couple white papers on modern rendering techniques that were actually developed in the 50's or 60's and one day someone happened noticed that modern

I've seen a couple white papers on modern rendering techniques that were actually developed in the 50's or 60's and one day someone happened noticed that modern hardware could easily do it in real time now. I wonder how many gems there are out there from the past awaiting rediscovery and reuse. Ray tracing may not really fit that but it is cool to see hardware opening up more and more real time use cases. The images in that paper make me feel like we are right around the corner from a neat trick to use the low resolution ray tracing to modify traditional lighting towards realism.