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Prince781/scale_canvas.js

Last active August 29, 2015 14:22
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scale canvas to hidpi
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scale_canvas.js
$("canvas").each(function(i,elem) { var ctx = elem.getContext('2d'); var ratio = (window.devicePixelRatio || 1) / (ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1); elem.width *= ratio; elem.height *= ratio; ctx.scale(ratio,ratio); }); void(0);
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