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Comment by nothrabannosir | Hacker News Reader

This runs like magic on an iPhone, but for some reason Chrome, Safari and FF on desktop (mac, recent mbp) it's sluggish as hell. Burning through CPU, 15fps for the force-graph.

I feel like something's wrong, but I don't even know where to start debugging this. Do I need to enable Chrome feature flags? Or do mbps just have less powerful gpus than iPhones?

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i'm getting 15 fps also with the default settings, Google Chrome 58.0.3029.81 (Official Build) beta (64-bit), ubuntu 16.04.2, Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz, Device: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) (0x1916)

intel_gpu_top :

                   render busy:  99%:                    render space: 58/16384

                          task  percent busy
                            CS:  98%:     vert fetch: 422129727 (6178461/sec)
                           GAM:  97%:     prim fetch: 140710713 (2059497/sec)
                          GAFS:  90%:    VS invocations: 422116511 (6178270/sec)
                            VS:  89%:    GS invocations: 0 (0/sec)
                            CL:  89%:         GS prims: 0 (0/sec)
                            VF:  89%:    CL invocations: 140703527 (2059406/sec)
                            SF:  89%:         CL prims: 140659556 (2059072/sec)
                           SDE:   3%:                     PS invocations: 33276080884 (482451768/sec)
                          GAFM:   0%:                      PS depth pass: 35922946732 (507385276/sec)
                           SVG:   0%:                      
                           TDG:   0%:                      
                            RS:   0%:                      
                           TSG:   0%:                      
                           VFE:   0%:

This one seems to be doing more stuff with particles and runs much more smoothly :

https://lab.cheron.works/webgl-gpgpu-particles/

On my desktop (Nvidia 750 Ti , Windows 10) I get 60fps with Chrome, Firefox, and Edge on everything I've tried of the examples.

Gave that a shot on the (Intel Graphics) Macbook Pro and wow, didn't even manage 10fps. Safari was worst of the lot.

I'm getting 0.5fps with Safari Technology Preview, and a smooth 60fps with the stock Safari. I'm wondering what's up with that? I've tried both with and without the relevant entries I could find in "Experimental features" (WebGL 2.0, WebGPU, and something I forgot)

Chrome and Firefox on Android, on my Pixel XL, don't rise above 32 FPS. Chrome is a bit more performant than FF but not by much. I think you're right in your assessment; the iPhone's GPU is much stronger than you might think.

Most examples are 60 fps, but on the last one I get 60 fps in MS Edge, but only ~35 in Chrome. IE won't even load it for whatever reason. Quadro k620

Likely has to do with the increase in the number of pixels on your desktop display. Even worse if you're using a high resolution external display.

Mobile phones actually have a surprisingly high pixel count compared to desktops. FHD displays are common, and QHD and even near 4K displays are pretty common.

2015 MB Air, stock Chrome, silky smooth and no heat.

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