On Feb 10, 2008 10:07 PM, Oliver Hunt <<a href="mailto:oliver@apple.com">oliver@apple.com</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div style="">That said, basically what you're saying is that canvas should not support hidpi. At all. There is no need to request the dpi of a canvas, but (and here's the critical bit) you can't have get/putImageData work at a different resolution from the backing buffer.</div>
</blockquote><div><br>Why not?<br><br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style=""> Their sole purpose is to be a 1:1 mapping to the canvas backing store, so saying get/putImageData should work in canvas pixels and not device pixels seems to defy the whole reason for this API existing.</div>
</blockquote><div><br>It seems to me the API would still be useful even if it downsampled the backing store.<br><br>I guess we'll just cross our fingers and hope Web developers get it right. We could implement a higher-resolution canvas backing store for Firefox, but that wouldn't really help since most developers won't test with a setup that would trigger it.<br>
<br>Rob <br></div></div>-- <br>"He was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was upon him, and by his wounds we are healed. We all, like sheep, have gone astray, each of us has turned to his own way; and the LORD has laid on him the iniquity of us all." [Isaiah 53:5-6]