Unity at GDC - C# to Machine Code

March 23, 2:30 pm (San Francisco) - Get an overview of the performance initiatives underway at Unity and share a deeper look at the technology developed to transform high-level C# code to efficient machine code. Dive into examples and look at traditional C++ engine code and compiler output to compare with our approach. Gain a better understanding of how Unity is solving the problem of optimizing game code and the technology that we’ve built to enable our solution.
Speaker:
Andreas Fredriksson, Principal Engineer at Unity

[@reyanroy1070]

that's probably the best unity presentation ever..awesome... always wanted to know under the hood of unity code optimization...more this type of talk plzz

[@bitesizedtech8095]

One of the best presentation that I've seen till date. Thanks a lot for making this topic so palatable!

[@Rennan24]

I really like the direction that Unity is heading in now. Especially since Unity has had a bad track with performance for a long time... I'm looking at you UnityScript. Can't wait to mess around with this and see what performance gains can be had! 2018 seems like a really good year for Unity! 😊

[@deusxyz]

I just rewrote my voxel engine, and the performance for the new archtecture as well as using ECS, its about 20 times better!

[@saniel2748]

I love how programmers talk about compilers like they are living things on their own, so they don't "program" them, they "teach" them etc

[@onerimeuse]

As a beginner programmer (day two over here) this is fascinating. It's so far over my head, and yet still mostly digestible. I can't wait air to come back to this in a few months and say to myself "oh, yeah, duh, all of this makes sense".

[@matejzajacik8496]

Another excellent Unity talk! I love the way they're going about things forward. Very well presented with lots of useful info.

[@aa-xn5hc]

Very impressive presentation

[@danieljohns1318]

What do I need to study/read to understand most everything he talks about ? (SIMD, AOS, etc etc)

[@themostamazingguy]

I wanna be his guy when I grow up...

[@CariagaXIII]

is this ready yet?

[@BxBL85]

IF he ever solve the Determinism problem, multiplatform networking included, he effectively rises Unity above Unreal and all other engines ever made. No game engine have ever solved that problem..

[@WaqasAhmadVlogs]

What is ECS and native collections?

[@shaggun]

ECS (Entity component system) is the pattern that you can use with Unity 2018 where everything is supposed to be an entity or a component, it basically separates data and logic, and by Native collections, I think they're talking about arrays, lists, dictionaries, queues, stacks etc

[@WaqasAhmadVlogs]

yes, native collection gives control over the memory as it has no garbage collection and the developer has to allocate it and dispose it himself to make it work with job system. I like the direction Unity is taking.

[@Gmania999]

You need make a tool to translate all C# code into native, otherwise all scripts are easily disassemble into readable code =(

[@naikrovek]

They already do. It's called IL2CPP.

[@Gmania999]

At the moment, I found a tutorial - "IL2CPP for WebGL" IL2CPP for windows not working yet? if it works please share the link how to use it for windows build

[@thomaskey7388]

IL2CPP for standalone builds is in 2018.1, at least for Windows and Mac OS

[@CanKarakuzulu]

You really should integrate Rust or Rust like ownership into HPC#. That will take care of lots of problems too IMHO.

[@FuZZbaLLbee]

So it will still be easier then writing optimized C++ code yourself

[@neociber24]

That's something I was thinking, I appreciate the effort for bring us techniques and tools to write highly optimizated C# code but I think choose C++ over C# could be better for the engine. But well, I don't really know how could be if they implement C++, because the amount of speed you gain with all these techniques and tools is really high.

[@FuZZbaLLbee]

Freddx L. Just to clarify, what I meant was that this automatically optimized C# code is probably easier to write than writing optimized C++ code myself. But I also agree that for someone who is proficient with C++ this might not make a difference.

[@tetsuoiiii]

Yes, but lamers prefer C#