Rust for UE ?

[MothDoctor]

@anonymous_user_15fbac48

The Rust language itself ain’t tailored really for any kind of specific domain, it’s a system language. However, it had to start somewhere, and it’s Mozilla who makes Rust, so since they are already in the web field, they started there by rewriting internals for the Fire Fox browser in Rust. Some ditched their old languages and rewrote in Rust to gain massive performance boosts and smaller memory foot prints.

If Rust has it role in Firefox “reboot” some time age and Firefox cut memory usage to 1/3 less than Chrome… it gains some respect now

@anonymous_user_15fbac48

Oh, and 15% compared to a 100FPS C++ code, doesn’t translate to 15FPS loss in Rust. It’s less than 15FPS. Hence a small price to pay. And safe Rust is always faster than managed code C#/F# in general.

Well, 15% lost on the language itself and even just 10 fps lost? It’s huge and unacceptable.
Maybe if it would allow for some multithreading code written easier to get some performance back, then it could be interesting. With next-gen consoles better utilization of high CPU core count would be very appreciated.

@anonymous_user_15fbac48

Yeah, I know, it depends on your project. But, yeah, managed code has come a long way and got a ton of performance improvements. There are C# written game engines, Space Engineer is one of them, it’s not that bad. But heck, I got a Ryzen 7 3700x 16 threads, and the GC hiccups are just there. Only Unity games can get away with it, because it’s only the game logic that is written in C#, and Unity/UE games tend to be simple. Seems Cities Skyline had to use native code even with Unity.

Anyways, Rust isn’t meant to compete with C/C++, it is mean to replace it. However, it can compete with C# in my opinion. C#, or any managed code in general, looses FPS even with the boundary transition between managed/native alone. Epic Games pointed that out, and they are not happy about that. It’s sub optimal obviously. Yet, Rust is to my opinion only half a notch “harder” than C#. Yet virtually comes with the performance of C/C++.

For game logic only, it’s more like learning Rust and C#, not C++. If UE supported Rust it still would support C++ of course. And Unity devs absolutely wouldn’t care about learning C++.

Great point!
Although even a simple Unity game could suffer from bad performance, no way to manage memory. I heart that Unity being entirely rewritten to ECS it’s more about optimizing memory management with C# projects (and large chunks of the engine itself) than solving issues with OOP specifically.

In this light, Rust actually sounds tasty in comparison to C# which simply “costs” too much for its simplicity