The css3-images module is at candidate recommendation. One property from that module that is not yet implementes in WebKit is image-resolution. http://www.w3.org/TR/2012/CR-css3-images-20120417/#image-resolution I propose to introduce the property, initially behind a runtime feature flag.
Advertised on webkit-dev: http://thread.gmane.org/gmane.os.opendarwin.webkit.devel/20505
On bug 85457, unable to build support for a runtime feature flag. Will opt for compile time flag instead.
Nobody to fix it?
This was updated to https://www.w3.org/TR/css-images-3/.
'image-resolution' was deferred to CSS Images Module Level 4.
<rdar://problem/96957751>
Some initial work was done in Bug 85264.