[daenz]

It's been awhile since I've done game engine work, but is this impressive? The first thing that comes to mind is they're using instanced rendering. This allows the CPU to only deal with 1 sprite, while telling the GPU to render multiple instances of the sprite, and use a GPU buffer to find each sprite's transformation matrix. All the CPU has to do is update that mmap'ed buffer with new position information (or do something more clever to derive transformations).

Am I missing something that makes the video novel?

[cshenton]

It is not impressive. This workload is entirely bandwidth constrained and is more a test that your renderer isn’t doing anything stupid.

[farzher]

you're not missing anything, it's not impressive. i was just checking how fast computers are and sharing the results. my original title was "an optimized 2d game engine can render 200k sprites at 200fps" but the mods changed it to match my youtube title (which made it a lot more popular). and the fact it's written in jai isn't relevant, it's just what i happened to use

[johnnyanmac]

> and the fact it's written in jai isn't relevant

I figured it wasn't given that you were showcasing a GL project. But nonethees disappointing as someone curious as to whether or not the language helped in indirect ways with how you structured your project and if you feel you could scale it up to something closer to production ready. That did seem to be the goal of Jai when I last looked into its development some 4 years ago.

[farzher]

jai's irrelevant to the performance here, but it's very relevant to how easy this was to make. i'm not a systems programmer. i've tried writing hardware accelerated things like this in C++ but have failed to get anything to compile for years. the only reason i was able to get this working is because of jai. this is my first time successfully using openGL directly, outside of someone else's game engine

[quadcore]

Nope, I don't think so. The point I see in it is regarding some thought I have about that games should run on intel graphic chipsets. Diablo 3 doesn't for example. I wonder if D2 ressurected does...

[hiccuphippo]

The author was using this benchmark to compare HTML game frameworks and made this to see how different it is native:

https://old.reddit.com/r/Kha/comments/8hjupc/how_the_heck_is...

[OskarS]

> All the CPU has to do is update that mmap'ed buffer with new position information

Doesn’t even have to do that, this is child’s play for a compute shader. The CPU can go take a 16 millisecond nap and let the GPU do all the work.

[ffhhj]

They should try adding GPU polygon-volume collisions and see how many it can handle.