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Re:Doubling SVG Frame Rates at Khan Academy by progers7 on Thursday November 27, 2014 @01:14AM (#8666199)
SMIL is not perfectly fluid. SMIL is not inherently hardware accelerated. SMIL animations are slower than the same animations driven from JS in all major browsers except IE which doesn't support SMIL but does support JS. As the OP showed, JS animations are the way to go for SVG.
Re:Doubling SVG Frame Rates at Khan Academy by squared9 on Thursday November 27, 2014 @05:32AM (#8666708)
My experience says otherwise, SVG SMIL tends to be 10-20% faster with lower CPU load in recent browsers (Chrome/FF/Safari) than a JS-driven animation. YMMV though.
Re:Doubling SVG Frame Rates at Khan Academy by ygra on Thursday November 27, 2014 @01:47AM (#8666274)
One might argue that an animation that doesn't even play is infinitely slow ;)