Yes! we've made great progress on my project's conversion to CUDA! Without any optimizations, it's already 6 times as fast as the CPU version. It's not as much as I'd hoped, though. But, hell, it's real-time(-ish) now!

No pretty pictures this time... Instead, YouTube video!
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Getting the initial idea of keeping host and device well separated isn't all that hard. However, actually putting it into practice turned out to cause quite some headaches. Debugging a program with hundreds of threads running in parallel is hard, I tell ya. But now, all of the basic functionality seems to be in place.

Next up:

• Octree - way more objects in the scene!
  
• Optimization - 6 times as fast as a single CPU core should be far from the limit!
  
• Block editor - we really need to be able to place/remove objects for our assignment...
  

Stay tuned!