[jdashg]

Well unfortunately, the device pixel size of something does actually depend not just on the css size and dpr scaling, but also on position and iirc even potentially what else is on the page due to think like border and thin line dilation. Unfortunately that's just how css layout works in practice, due to pixel snapping and dealing with ambiguities in how to render thin or generally non-integer-sized elements.

There are two approaches these days though: https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/W...

[FrostKiwi]

> There are two approaches these days

I'm aware of those, it's just sad nothing is nailed as a standard. Those are two workarounds unfortunately. A browser API not supported on Apple Safari and pixel-presnap with JS doing the CSS px calculation backwards + snapping and even that code has an extra branch to fix a macOS+Chrome bug. The whole situation smells of duct tape.