canvas - Why context2d.backingStorePixelRatio deprecated? -

canvas - Why context2d.backingStorePixelRatio deprecated? -

according paul lewis's article, high dpi canvas: need take business relationship context.backingstorepixelratio solve blurring issues.

if property deprecated, dart take care of blur issue on high definition device?

i thought exact same thing , far issue tracker tells:

yes, article written when safari had backing store ratio of 2. it's been 1 in chrome.

as approach dealing is:

canvas.width = width * window.devicepixelratio; canvas.height = height * window.devicepixelratio;

canvas.style.width = width + 'px'; canvas.style.height = height + 'px';

where width , height want them (probably window.innerwidth & innerheight total viewport shenanigans.)

then need adjust fact upscaled canvas with:

ctx.scale(window.devicepixelratio, window.devicepixelratio);

so there have solution.

canvas dart html5-canvas