1 Million Particles Rendering at 120 FPS
https://reddit.com/link/1v4m9dw/video/gbips9icv0fh1/player
I've been hacking away on my own game engine for a while. Decided to benchmark it today, and the results were better than I expected. The engine is sitting around 8.1–8.9 ms per frame in the steady-state tests, which comes out to roughly 110–122 FPS. That's while keeping frame times pretty stable.
Right now it's simulating 1 million particles with 4 XPBD iterations. The physics pass itself finishes in about 4.8–5.0 ms on the GPU, so there is still some room left in the frame.
The initial upload moves around 68 MB of particle data into VRAM. That takes about 91 ms over PCIe. Since it's only a startup cost, I'm not too worried about it.
One thing I kept an eye on was the telemetry. It never reported the frame going over budget. The [PERF_OK] Frame within budget message stayed consistent for the whole run, and I didn't see any frame-time spikes.
Still a lot of things I want to optimize, but I'm pretty happy with where it's at right now.