Path guiding is coming to blender, and it has the potential to reduce render times massively in some circumstances. This is great news for everyone, especially those who are stuck using less than ideal equiptment such as old GPUs, CPUs and laptops.

Here's my guide to optimising Blender where I talk further about how path tracing engines work.    • The Easy Way to Optimize Blender  

You can read Thomas Müller's papers here https://tom94.net
Here's a blog post about Intel's open path guiding library, including some really great examples of noise reduction. https://www.intel.com/content/www/us/...


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