This is my implementation of the radiance cascades global illumination using WebGPU. This is not my creation, it was done purely to learn WebGPU and understand the data structure that I've seen beautiful demos of.
The folowing links contained very helpful information:
https://m4xc.dev/articles/fundamental-rc/
https://radiance-cascades.com
https://jason.today/rc
Demo Canvas above. This demo is not fully representative of the quality that can be achieved radiance cascades. Of the many known issues (color banding, light leakage), fixes have been developed which I have not implemented here.
I find it looks best with highly vibrant colors like in the demo video.