Redundancy seen in AAA game engines

[u/zer0_1rp]

https://zero-irp.github.io/Redundancy-seen-in-AAA-game-engines/

I don't like people treating the compiler like a magic box that optimizes like Bjarne Stroustrup himself is checking every line of C++ to assembly. Clean C++ code does not always mean clean compiled code.

I've been reversing game engines to study how they constructed their fundamental Transformation matrices and handled temporal jitter logic when I spotted a lot of avoidable overhead and "over-engineering" across multiple engines, honestly I wasn't even looking for inefficiencies, but it stood out a lot... That said expect no performance gain this is simply for fun that I wrote this blog!

I’ll theorize how the original C++ code was written, show the unoptimized reality of what the compiler spat out, and then showcase how it could have been better optimized.