The demos are cool, but are there any among them that can't be done in JS? I know I've seen Voronoi polys in JS that were way less janky than the one in the PNaCL demo.
If you have results showing otherwise for bignums, I would be very interested. Anything special about that particular problem?
Because Mozilla assured us that it was not. Central to Mozilla's case against Dart was the assertion that parts of it - including bignums - could not be implemented efficiently by compiling to JS, leaving native Dart runtimes at a strong advantage.
As I said above, I would expect JS to reach about half of the speed of C. It's possible that having native bignums would have removed some of that difference.
More importantly, the context here is PNaCl. Do you see a reason bignums could be emulated better in PNaCl vs JS? I assumed that's what you were implying, but perhaps I misunderstood you? Sorry if so.
js has plenty of 2d physics sims but i have yet to see a decent 3d one like this.