Certainly not legions but it is worthwhile to step into an Apple store and give your sites a try. I was surprised to find my canvas-based code breaking on the R

Certainly not legions but it is worthwhile to step into an Apple store and give your sites a try. I was surprised to find my canvas-based code breaking on the Retina MacBook Pro. FWIW, the cause was getImageData(0, 0, w, h) returning 4wh pixels and not w*h as I naively expected.