xiphias

benchmars game is great, but sadly not well maintained anymore. Rust has it's flaws, but it's not runtime speed (much more compilation speed, IDE support, distributed compilation support).

The Rust - C++ speed comparison is sadly quite bad. On a modern machine, some of the benchmarks from the benchmarks game ran faster in Rust than in C++. It usually depends on the explicit / implicit vectorisation support, and a lot of it is taken care of by LLVM.

Also if you look at the C code, the multi-threaded optimizations are quite hard to write in C, while Rust has Rayon (which is not yet used in the Benchmarks game examples).

Sounds interesting, thanks! I had a few informative but controversial comments in the past... that may be the reason.

It looks impressive, I just don't understand why computer games don't use these techniques to feature realistic human bodies/faces.

If by PBKDF2 you mean PBKDF2-HMAC-SHA256, it should die as it's so much less secure than using Argon2 as a password hash function.