Word of caution about using things found in the internet

#1

My project wasn’t performing as well as I wanted it to work. I spent a week trying to prematurely optimize, switch ECS library, to no avail. Until I decided to write a custom benchmark with all ECS’s, only to find none of them are good enough for me. Then I decided to write “pure” control sample, pretty much the same as BunnyMark. I didn’t have a problem with rendering 8-10k bunnies using BunnyMark, but for some reason my project stuttered just after 1500 objects. After hxscout didn’t yield much help, I compared BunnyMark and my code, just to find this in my project.xml:

<window width="750" height="400" fps="60" hardware="false" vsync="false" antialiasing="4" />

I copied this snippet a long time ago, without thinking twice about it. But hardware="false" made all the difference! So, there’s that: never copy stuff blindly and expect it to work flawelessly.

1 Like
Basic code review
#2

So finally did you switch back to an ECS again?

#3

Currently testing ECX vs Edge. https://github.com/Misiur/ECSStressTest - requires git versions of edge and ecx respectively (for archive reference: ECX, Edge). So far ECX doesn’t stutter at 4K tiles, edge drops FPS significantly.

1 Like
#4

Was this also why your javascript was faster than your C++?

I’m guessing 4k is with Javascript as well, still seems pretty low.

#5

I ramped up to 8k tiles: JS at stable 60FPS, Cpp 45FPS? That is weird. When I hook up hxscout to Cpp build I can’t really debug framerate as just becuase of telemetry it drops to 10FPS.

#6

if code is more understandable after optimization (for you) -> its ok :wink:

#7

Was that your final conclusion then for those of us choosing between ECX and Edge, or did you find any better ECS?

#8

ECX v0.1 practically doesn’t have any overhead and is my final choice - you’re more likely to hit rendering performance bottleneck than an ECS one.

There’s edge2 in development (however in a private reposiotory at the moment) which is way above edge 1 in terms of performance, so all that matters when choosing between ECX and edge2 is the coding style which you prefer.

#9

Alright thanks again for doing the testing, its been very helpful as I doubt I could figure them all out myself.